Transcript HD Visual Communication System

HD Visual Communication System
Sales Guide
Introduction
Having a suitable communication tool between people in
distance is now an essential factor in the business scene.
With current progress in communication technology, not
only is the number of such system needs is growing, but
also expanding into the visual communication field as well.
Panasonic’s HD Visual Communication System delivers a
full HD video and audio communication in this field by
combining its own latest video and audio technology. It
allows you a life-like communication with people in
distance, almost as though you were in the same room.
Also by taking full advantage of the system's high quality,
it creates a huge potential to a new communication style
which
HD Visual Communication System
Introduction
is even more than just an ordinary television conference
system of what was in market till today.
This manual was made for the purpose not only to provide
the technical information of this system, but also to support
your sales activity or give you better ideas about how you
can propose it to your clients.
By reading this manual carefully, we hope that it will help
you get some ideas how to make a your sale approach
more sufficient when visiting other companies, universities,
research institutes, governments or other communities.
We look forward to hear your success - good luck!
HD Visual Communication System [Sales Manual]
Basic Knowledge
Introduces the concept and features of the system,
AV and IT configuration techniques, etc.
Growth of the visual communication market
with increasing product quality
Basic Knowledge
With increasing sophistication of visual communication through features such as high definition video and high audio quality, applications are expected
to expand far beyond those of the conventional use for video conferencing.
Promising areas of use are not limited to the office, but include commercial surveillance in factories, R&D sites, and sales outlets, as well as sales
support.
Other potential areas besides commercial use are public services such as education, research, as well as medical and welfare institutions.
Projected growth of the HD communication market
According to a survey, the HD-based communication market is expected
to grow in the future. Identified as the five most promising areas were
surveillance/remote management, training and development,
meetings/discussions, chatting, and sales, where the market size is
estimated to total 165.5 billion yen by 2014.
* Chatting: Live video chat services
2014
approx.
2014年
約1,655billion
億円 yen
165.5
2013
approx.
2013年
約940billion
億円 yen
94.0
2011
approx.
2011年
2010
54.7
billion
approx.
約547
億円yen
2012
approx.
2012年
62.0
billion
約620
億円yen
22.6
billion yen
* The above estimate is based on
the assumption that the market is
developed by following up
launching of the current model with
popular products and products that
emphasize portability such as an
all-in-one models.
Projected market growth (100 million yen)
Demand areas
2010
2011
2012
2013
2014
Surveillance/Remote management
47.0
125.4
125.5
223.4
394.7
Training and development
7.7
16.7
150.0
200.4
406.1
Meetings/Discussions
50.2
116.7
101.7
157.5
351.2
Chatting
20.2
44.5
79.5
116.5
160.3
Sales
101.5
243.8
162.9
242.9
343.0
Total
226.1
547.0
619.5
940.7
1,655.3
These are the keywords of the HD Visual Communication System! Basic Knowledge
AV and IT technology combines to deliver the HD Visual Communication System
Here, we take a closer look at the AV/IT technology incorporated in the system
and the standards it is based on.
These are the keywords
of the HD Visual
Communication System!
Video format:
Full HD
HD Visual Communication System
Audio compression
standard:
AAC
Video
compression
standard
H.264
The secret of producing the feeling of
"being there"
[The technology behind it]
Internet protocol
SIP
The secret of producing the feeling of "being there" [Full HD]
What's the difference between SD,
HD and Full HD?
Basic Knowledge
The impact of the big screen,
beautiful picture ...
SD and HD refer to the image quality and resolution of TV broadcasts.
SD is the abbreviation for "Standard Definition", the standard image quality used in
conventional analog broadcasting. HD or "High Definition" image quality appeared
with the advent of digital broadcasting. While the number of horizontal scan lines
on the TV screen used to be 480 for SD, HD has increased this number to 720 or
1080 lines, and the aspects ratio, which used to be 4:3 for SD was widened to 16:9
in HD, resulting in a wider screen format. The expression "Full HD" we hear a lot
these days refers to a video component capable of accepting HD signals and able
to display the full HD resolution of 1920x1080 (approx, 2.07 million pixels).
And with the digitalization of TV and the marketing of network-ready components,
techniques to compress video data became increasingly important. One of these is
MPEG.IMPEG (Moving Picture Experts Group) was formed by the ISO
(International Organization for Standardization) to set standards for audio and
video compression and transmission. There are different standards for different
media, as shown below.
Main video standards
HD
4：3
Format
(640×480)
16：9
Format
(1920×1080)
Comparison of SD and HD
SD
HD
480
effective
scan lines
1080
effective
scan lines
HD, with its greater number of scan lines, can deliver a more finely resolved
picture. * See the image above.
Resolution
Remarks
480i
640×480
Analog broadcasting
480p
640×480
PC
Standards
Use
Image quality
720p
1280×720
Digital broadcasting, PC, game machines
MPEG-1
Video CD
Image quality
1080i
1920×1080
Digital broadcasting
MPEG-2
Digital broadcasting, DVD
Hi-vision only
1080p
1920×1080
PC
MPEG-4
Cell phones, etc., mobile communication
Standards
SD
HD
SD
Video compression standards
The secret of producing the feeling of "being there" [H.264]
Basic Knowledge
Thrilling moments anywhere anytime...
What is H264?
A video compression standard applicable to a wide variety of applications,
from cell phones to HD television.
「H.264」 is one of a family of standards recommended in by the ITU (International
Telecommunication Union) in 2003 to standardize video coding techniques.It is used widely as
standard format for moving pictures in a wide range of applications, including a terrestrial
digital broadcasting service for cell phones called One Seg, Blu-ray Disc, portable video
players, and game machines.Compared to conventional DVDs, MPEG-2 for digital
broadcasting, and MPEG-4 for cell phones, H.264 is designed for a much wider variety of
applications and offers 1.5 to 2 times the compression ratio.At the same video quality, it can
reduce the data volume to nearly half.
The H.264 technique is recommended by ISO (International Organization for Standardization),
which cooperated with ITU in its development and formulation, to form a part of MPEG-4
(MPEG-4 Part 10 Advanced Video Coding).Therefore, both names are are normally used in
the combined form "H.264/MPEG-4 AVC" or "H.264/AVC" when you read or hear about them.
ISO
MPEG-2
MPEG-4
MPEG-4 AVC
ITU
H.262
H.263
H.264
Main applications
DVD. BS digital broadcasting
Cell phones, webcasting
Terrestrial broadcasts aimed at
cell phones, webasting
Formulation of standard・
Recommended period
1994
1998
2003
Image size
720×480 - 1920×1080
176×144 - 352×288
320×240 - 1920×1080
Bit rate
4M - 24Mbit/s
32k - 384kbit/s
16k - 10Mbit/s
Motion compensation block size
16×8, 16×16 (2 types)
8×8, 16×16 (2 types)
4×4 - 16×16 (7 types)
Name of
standard
Orthogonal transform
coding system
8×8 (discrete cosine transform)8×8 (discrete cosine transform)4×4、8×8 (integer transform)
Panasonic solutions
using H.264
 Network camera for surveillance and
monitoring
 Blue ray/DIGA DVD Recorders
 VIErA Plasma/Liquid Crystal Television
 Digital Video Cameras/LUMIX
 Cell Phones/Car AV Equipment
 Web-based video distribution solutions for
digital-ready TVs, such as acTVila (Video
Full)
 Digital broadcasting solutions/equipment
and more
The secret of producing the feeling of "being there" [AAC]
Basic Knowledge
Good sound, anywhere, a lot of ･･･
What is AAC?
AAC is an advanced audio compression and encoding scheme
that achieves better sound quality with smaller files.
As part of the MPEG audio compression specifications, the official name of AAC
(Advanced Audio Coding) is MPEG-2 AAC. With 1.4 times the compression ratio of the
previously used MP3 format, it is becoming the standard audio format in wireless
communication, such as digital broadcasting and cell phones, as well as webasting. AAC
is also used in MPEG-4, and an advanced form of AAC called HE (High Efficiency)-AAC
has evolved through adoption of a technique for bandwidth extension.
Changes undergone by main audio compression standards
MPEG-1
MPEG-2
MPEG-2 AAC
MPEG-1
Audio Layer 1
MPEG-2
Audio Layer 1
MPEG-2
AAC
MPEG-1
Audio Layer 2
MPEG-2
Audio Layer 2
MPEG-1
Audio Layer 3*
MPEG-2
Audio Layer 3
*MP3： High audio quality
Extension
MPEG-2 AAC
Bandwidth Extension
MPEG-4
Extension
MPEG-4 Audio
AAC
Extension
MPEG-4 Audio
AAC Bandwidth
Extension
The secret of producing the feeling of "being there" [SIP]
Basic Knowledge
What is SIP?
SIP is a protocol for exchanging video and audio data between multiple parties and strongly favored in real time communication.
A communications protocol is needed to control communication between
PCs over a network.It follows certain rules and procedures to ensure that
the system works properly.That is how the worldwide interchange of data
over the Internet is made possible.SIP is an application layer-controlled
protocol and falls into the 7th of the standardized layer model shown
below.Other protocols are the standard Internet protocols IP in Layer 3
(Network), and TCP/UDP in Layer 4 (Transport), and the web and e-mail
protocols HTTP and POP in Layer 5 (Session).
The SIP (Session Initiation Protocol) is a VoIP (Voice Over IP) protocol
widely used for controlling multimedia communication sessions such as
voice and video calls over Internet Protocol (IP).
Layer 5 Session
HTTP
SMTP
FTP
POP3
SIP
Layer 4 Transport
TCP/UDP
Layer 7 Application
Layer 6 Presentation
Layer 3 Network
Because of its simple and highly scalable architecture and its high degree
of Internet affinity making it easy to implement, SIP is used in a wide
variety of applications such as IP telephony, video telephony, and video
conferencing.It also supports multimedia communications sessions such as
voice, video, audio and text over the Internet, making it the ideal protocol
for software designed for real time communication and collaboration.
IP Layer
Layer 2 Data Link
Layer 1 Physical
The secret of producing the feeling of ‘’being there”･･･
HD Visual Communication System
[Product Features]
Basic Knowledge
Configuration of HD Visual Communication Unit
A simple configuration for a user-friendly, easy operation.
By simply connecting it to a camcorder and a full HD plasma display,
you can have a HD video conferencing system through the Internet.
Basic System Configuration
Boundary Microphone
KX-VCA001
HD Visual Communication Unit
KX-VC500
Remote
(Accessory)
Example of point-to point usage
Point
A
Point Ｂ
Television
Television
Microphone Video camera
Router
ONU
Video camera
ONU
Microphone
Router
Product Features (1)
Aliveness
Image quality
Basic Knowledge
Panasonic's High Definition technology brings video conference to life-like
●Full HD quality from 3Mbps IP rates
Panasonic has succeeded to provide a Full HD video at a IP rates of approx.
3 Mbps of bandwidth by featuring its H.264 technology acquired through
VIErA and DIGA, and Uniphier®* digital consumer electronics integration
platform. Thanks to its crisp and clear picture with not a single blur even
when you wave your hands, it makes you feel as though you’re almost in the
same room.
*Integration platform for use in a wide range of consumer electronics, from cell phones to home
AV equipment. UniPhier®is a registered trademark of Panasonic Corporation.
Other Video
conferencing
systems
The HD Visual
Communication
System
lets you
see clearly
Product Features (2)
Aliveness
Basic Knowledge
Audio quality
Better communication with no sound glitches, duration or noises
Model Cases ...
●High audio quality
By featuring its proprietary echo
cancellation* system based on the
sound source separation technology,
Panasonic has implemented a
secondary audio programming for
20kHz broadband stereo. This
ensures a more natural and smooth
conversation by cutting the echo or
howling, as well as a sound dropouts
when people talks together at the
same time.
Ok to have mutual conversation
with multiple speakers at the same time
20kHz CD
The level of
CD-quality
sound
7kHz
AM Radio
3.4kHz
Phone
* A technology which blocks the speaker
sound getting back into the microphone, which
causes echo or howling.
I think
I like Plan A.
Well
right.
...
all
captured without dropouts,
so you can even use it in
a noisy environment, such
as factories.
The voice of the person at
Do you think
so, too, Mrs.
XX?
Let's see...
●Direction sensing microphone
By using our direction sensing microphone (sold separately), the
direction and movement of the sound can be captured at the
speaker’s side, and be reproduced exactly the same at the receiver
side as well.
Live and smooth conversation
By the way
The QoS* control technology provides a good quality in sound with
mostly no duration or dropouts, even when the parties are
physically miles away.
You know
right comes out of the
right speaker, that of the
person at left comes out
of the left speaker, so you
know right away who is
talking.
Video conferencing with
minimal time lag (less
than 0.3 seconds one
way).
Yes?
●Video conferencing in a life-like atmosphere
* QoS technology reserves the network bandwidth to guarantees a certain amount
of speed in communication data transmit, which is required especially in
communication services sensitive to delay or dropouts.
Multiple sounds can be
Yes?
Product Features (3)
Easy
connection
Easy
operation
Basic Knowledge
Ready to go any time - just as easy to set up your household appliance
●Easy to connect
All you need is a simple configuration including the HD Visual Communication unit connected to the Internet, the dedicated microphone
(sold separately), an HD Video Camera and a Full HD Plasma Display. No complicated settings or high expertise is required. Your
current television at home can even be used.
●Easy to operate
With the dedicated remote control (accessory), almost anyone can easily operate the system. Thereis no need to operate PCs or any
other devices.
Once you store the IP address of your conferencing party, all you need to do is select your party, then start the conference in just one
touch.
A remote control can also be used to switch to a sub-camera or PC display, so basically no interruption needs to occurs in the
conference flow.
Installation
Connections
Operation
By storing the addresses of conferencing parties, all you
need to do is click and call to start the conference.
All it takes to set up the
system is 3 cables* and
the main unit.
* HDMI2 cable, LAN1 cable
To router
Dedicated
microphone
Video
camera
Remote control
(Main unit accessory)
Power supply
To power outlet
To plasma display
The basic operation is
mostly the same as using
your original TV remote
control at home.
Speed dialing
Address book
5 frequently used numbers
can be registered as speed
dial.
Click on the conferencing party
stored in your address book.
Product Features (4)
Stable connection
Reliable operation
Basic Knowledge
The automatic IP rate adjustment keeps you concentrating on your job only
The IP rate over the bandwidth usually means a packet loss and video disturbances. But the HD Visual Communication Unit allows you
to maintains both video and audio by controlling the IP rate to meet the bandwidth all times by using a certain algorithm and/or other
features. Should the video be disturbed due to the lack of bandwidth, the audio designated IP rate is still guaranteed in 1,5 to 8 Mbps
range all times, so the communication itself will be kept live with no interruption.
●Automatic Rate Control
In addition,
Up to 512Kbps to 8Mbps,
Automatic Rate
Control maintains
communication quality
and prevents packet loss.
With other current competitor's systems....
The video and audio may be disturbed by the packet loss.
●Redundant Packet （FEC）
●Automatic Repeat Request（ARQ）
●Decoder Error Recovery
Features are used to avoid video and
audio disturbances.
Basic Knowledge
Main Specifications
■Main Unit [HD Visual Communication Unit: KX-VC500]
Video
input
HDMI1 (main camera)
Input resolution: 1080i video only
Standard pickup area
approx. 2 meter radius, 360°
HDMI2 (video sub-
Input resolution: 1080i video only
Support video camera connection only
(Blu-ray Disc/DVD Player is not supported)
Maximum pickup area
approx. 3 meter radius, 360°
Pickup method
Stereo (right/left channel set automatically, 1 microphone connected)
Monaural (2 to 4 microphones connected)
Microphone unit
Unidirectional Electret condenser microphone x 4
Number of connections
Maximum 4 microphones
Band frequency
150 Hz to 10 kHz
Maximum input sound pressure
110 dBspl
Sampling frequency
48 kHz
camera)
Audio
input
Video
output
VGA mini D-sub
15（RGB IN）
Input resolution: XGA, SVGA, VGA
Boundary
Microphone
Separately sold Boundary Microphone only（KX-VCA00１）
Supports up to 4 Boundary Microphones*1
RCA pin jack
(audio input)
Max. line input: 1.2 Vrms
Supported device: Stand microphone (via microphone amplifier), audio
mixer, etc.
Applies echo canceling
Boundary Microphone and RCA inputs can be used at the same time
HDMI (television)
Resolution: 1080i
Delay
Less than 1 ms
Components (video
Resolution: 1080i
Microphone cable connectors
2
Mute button
Push-and-return switch
LED
2 color LED (red, green) to indicate mute status
Red: Mute on
Green: active
Orange: Start-up (blinks for approx. 1 second)
Off: Inactive
Dimensions (W x D x H)
120 mm (diameter)×25 mm / 4.7 in. (diameter)×1.0 in.
Length of accessory cable
approx. 8.5 m / 334.6 in.
Voltage and frequency
Supplied from main unit via dedicated cable
output)
Audio
output
■Boundary Microphone (KX-VCA001)
(HDMI)
Connected television (with speakers)
RCA pin jack
Connected television (with speakers), AV amplifier, active
speaker
(Audio input)
Maximum conference points
3*2
Content sharing
Personal computer (VGA terminal), video sub-camera (2
HDMI video terminals only)
Video codec
ITU-T H.264 high-profile, level 4.0 (B picture is not
supported)
Audio codec
MPEG-4 AAC-LD (LATM format)
Weight
approx. 280 g / 0.6 lb
Encrypted transmission
AES-CM/proprietary
Operating temperature
0 ℃～40 ℃ / 32 ゜F～104 ゜F
Network
RJ45 (LAN)
100BASE-TX full duplex only
Operating humidity
10 % to 90 %(non-condensing)
RS-232C
Connection for terminal control (by straight cable)
D-sub 9 pin
■Accessories
Remote control with batteries (size AA
manganese battery x 2, power cable)
Control
(serial)
Dimensions (W x D x H)
approx. 430 mm×280 mm×83 mm
approx. 16.9 in. × 11.0 in. × 3.3 in. (including legs)
Weight
approx. 4 kg / 8.8 lb
Voltage and frequency
AC 100-240 V, 50/60 Hz
Power consumption
During operation: approx. 32 W
During stand-by: approx. 30 W
Operating temperature
0 ℃～40 ℃ / 32 ゜F～104 ゜F
Operating humidity
10 % to 90 %(non-condensing)
*1 Monaural when connecting more than 1 microphone.
*2 Some limitations apply* when using 3 conference points.
Condition of Recommended Internet Line
(1) Stable Bandwidth
Actual bandwidth should be Min. 2M bps (HD=720p),
Min. 3M bps (Full HD=1080i) or above
Note1: The above recommended bandwidth is based on product specification, and for 2-points connection only.
Note2: A specific picture quality might not be able to be obtained according to some conditions such as line condition, equipment and
connection method, etc, even if the minimum recommended bandwidth is cleared.
(2) Full Duplex Type
Example: Both Upstream and downstream should be 4M/4M, 6M/6M, 10M/10M and 100M/100M, etc
(3) Packet Loss: Less than 3% (Random Loss)
Note: In case of 2-points connection only
(4) RTT
(Round-Trip Time)
: Less than 300 ms
(5) Jitter: Less than 10 ms
Basic Knowledge
Full HD Type Comparison Chart (main feature)
Ｐａｎａｓｏｎｉ
ｃ
ＫＸ-ＶＣ５００/ＫＸ-ＶＣＡ００１
Ｐｏｌ
ｙｃｏｍ
ＨＤＸ８００６ＸＬＰ※
TＡＮＤＢＥＲＧ
Ｑｕｉ
ｃｋｓｅｔ
Ｃ２０
Ｌｉ
ｆ
ｅＳｉ
ｚｅ
ＥＸＰＲＥＳＳ　２２０
Ｓｏｎｙ
ＰＣＳ-ＸＧ80
Main Unit, Remote Control,
Microphone
Main Unit, Remote Control,
Microphone, Camera
Main Unit, Remote Control,
Microphone, Camera
Main Unit, Remote Control,
Microphone, Camera
Main Unit, Remote Control,
Microphone, Camera
Set contents
Standard Retail Price
appro.1,000,000 yen
(with Camera 1,100,000 yen)
appro. 2,890,000 yen
appro. 1,198,000 yen
appro. 998,000 yen
appro. 1,150,000 yen
Market Launch
Oct. 2009 (Japan)
Oct. 2008
Sep. 2009
Jan. 2010
Nov. 2008
○ : Full HD＠2.6～8Mbps
○ : Full HD＠1.7～6Mbps
○ : Full HD＠～6Mbps
○ : Full HD＠1.7～4Mbps
× : Full HD＠10Mbps
Bandwidth
Connection
HD＠1.3～4Mbps
○ : Automatic IP rate control
Stability of connection
10% loss = no noise
HD＠1.2～6Mbps
△ : Automatic repeat request
(ARQ) is mainly used
HD＠1.1～4Mbps
No check
No check
HD＠4Mbps
△ : Controlled by
Resend/FEC/ARC
3% loss = brock noise
occurs a lot
8% loss = brock noise occurs
○ : Full HD 60i , HD 60p
△ : Full HD 30p , HD 60p
△ : Full HD 30p , HD 60p
△ : Full HD 30p , HD 60p
○ : Full HD 60i , HD 60p
Audio codec
○ : AAC-LD , 20kHz , 2ch
○ : Siren22 , 22kHz , 2ch
○ : AAC-LD , 20kHz , 2ch
○ : AAC-LD
○ : AAC-LD , 20kHz , 2ch
Audio quality
○ : Full duplex
(no sound dropout)
△ : Duplex
(sound dropout happens)
△ : Duplex
(sound dropout happens)
△ : Duplex
(sound dropout happens)
△ : Duplex
(sound dropout happens)
Echo cancellation
sound source separation
Adaptive filtering Type
Adaptive filtering Type
Adaptive filtering Type
Adaptive filtering Type
Microphone Connection
(q'ty)
○ : Max 4pcs
（cascade connection）
○ : Max 3pcs
△ : 2pcs
△ : 2pcs (Dedicated
microphone＋LSPhone)
△ : 2pcs
Remote control operability
○ : Simple indication and
operability as easy as
TV remote control
○ : Simple indication
and operability
No check
× : Very complicated
indication and operability
△ : Complicated
indication and operability
Content sharing ：ＰＣ
○ : Standard
△ : Option
△ : Option
○ : Standard
△ : Option
：Sub-camera
○：HDMI terminal (Full HD)
△ : Video terminal
○ : Ｄ terminal
○：HDMI terminal(720p30)
△ : Video terminal
Dual streaming function
× : No
○ : Yes （H.239）
○ : Yes （H.239）
○ : Yes （H.239）
○ : Yes （H.239）
× : Dedicated terminal
× : Dedicated terminal
× : Dedicated terminal
× : Dedicated terminal
○ : Standard (4 points)
○ : Standard (4 points)
× : No
△ : Option (6 points）
Video
Audio
Operability
Commercial video camera ○ : HDMI
Multipoint
Connectivity
○ : Standard (3 points)
※4 points (under study)
MCU connection
× : No (under study)
○ : Yes (4 points)
○ : Yes (4 points)
× : No
○ : Built-in
Connection with other
manufacturer' model
× : No (under study)
○ : Yes （H.323）
○ : Yes （H.323）
○ : Yes （H.323）
○ : Yes （H.323）
※XLP package model
19
HD Visual Communication System [Sales Manual]
Sales Knowledge
This chapter introduces the schedule from sales offer to startup of the
system,
as well as model cases of concrete applications,
the standard price of one conference point, and so on.
Sales Knowledge
Practical Communication Scenarios
Example (1) Design meeting with the development/manufacturing site by using a sub-camera
[Factory]
A direct design meeting with a development/manufacturing division can be operated effectively
by sharing a close-up of a picture of the prototype or drawing on the board with a hand-held camera
Camera
One-touch
switching
between cameras
Sub-camera picture
Sub-camera
Main Unit
Router
ONU
ONU
Internet
Router
Microphone
Camera picture
20
Sales Knowledge
Practical Communication Scenarios
[Office]
Example (2) Effective video conference between different offices by sharing PC materials
Video conference can be productively operated by sharing same charts and materials together.
It can also helps cutting traveling fee and carbon, and may even prevent expansion of an epidemic disease.
Camera
PC screen
PC
Camera picture
Microphone
Main Unit
Router
ONU
ONU
Router
Internet
One-touch
switching
between cameras
21
Sales Knowledge
Practical Communication Scenarios
Example (3) Active mutual communication between offices in different locations
Having a “live window” to see and speak with people in distance anytime can help the them build a closer relationship.
Video conference
Main Unit
Camera and microphone
Router
ONU
ONU
Router
Internet
22
[Office]
Sales Knowledge
Practical Communication Scenarios
Example (5) Sharing product information of showrooms and sales outlets
Connecting different showrooms or sales outlets can help shops without showrooms
give an effective sales offer to their customers, just like a live web-shopping.
Headset
Wireless LAN
Camera
Router
ONU
ONU
Wireless
transmission
Router
Internet
Main Unit
23
[Showroom]
Sales Knowledge
Practical Communication Scenarios
Example (6) A new education system with a satellite campus - 1
[University/Vocational school]
By combining the Elite Panaboard or Infrared Wireless Microphone,
classes in satellite campus can become more active with live lectures and direct Q&A from the main site
PTZ Camera
××○
□××
×・・・
Infrared
Microphone
Dividing the blackboard into a
right, center and left section
allows more flexible use by
switching between these sections
Infrared
Microphone
Router
Wireless
microphon
e
ONU
友
情
Camera
Internet
Main Unit
One-touch
switching between
cameras
Camera picture
24
Sub-camera picture
Sales Knowledge
Practical Communication Scenarios
[University/Vocational school]
Example (7) A new education system with a satellite campus - 2
Sharing lab researches with a sub-camera can create a new education/lecture style in school/private industries
Sub-camera
Microphone
Main Unit
Remote control
Router
ONU
ONU
Internet
Router
25
Sales Knowledge
Practical Communication Scenarios
26
[Private Industry]
Example (8) Video conference with input from onsite surveillance cameras
An input from a surveillance camera can be easily shared in a conference, by switching the image in just one touch.
While the image is being switched, audio are kept connected to continue the communication.
Surveillance Camera
WV-CP55V/50V, etc.
Hard Disk Recorder
WJ-HD616/716
PC screen
Surveillance
Camera System
Surveillance
Camera System
Camera
PC
Microphone
Main Unit
Remote control
Router
ONU
ONU
Router
Internet
One-touch
switching
between inputs
Sales Knowledge
Delivery Record
Nagoya Ohara
Academy
(Japan-Nagoya)
Provided the setup for real time distance learning between Nagoya and Shizuoka.
Real time communication lets students ask questions of the teacher
“right in front of their eyes” and gets them answers, too.
Question and answer session between a
lecturer and attending students at the
Nagoya Ohara Academy.The Panasonic
HD Visual Communication System is used
as the distance learning system linking the
school building in Nagoya with that of the
affiliated Ohara Bookkeeping School in
Shizuoka.
Reasons for choosing the system
Makes real time communication between
lecturer and students possible.
The writing on the blackboard is easy to read.
It is easy to handle and operate, so it doesn't
■Operational Diagram
disturb the progress of the class.
Customer's Voice
Please try it out!
Delivery Report
List of Sales Aids 00P
■Mr. Ohashi, head of the Shizuoka school
A lecturer can give only so many live lectures. So
using this system to provide lectures with the same
quality as live lectures is very effective.It allows
questions and answers in both directions, which is
also satisfying for the students who take the course.
■Ms./Mr. Watanabe, student at the Shizuoka
school
I can ask questions and get answers at any time.I
don't get the feeling at all that I am taking a distance
learning course. It feels just like taking any other
ordinary course.
■Delivered System
HD Visual Communication Unit
HD Integrated Camera
2
set
s
1
■
Full HD Plasma Display
HighVision LCD Television
1
1
27
28
HD Visual Communication System [Sales Manual]
Sales Support
The first half of this chapter deals with the information you will need when delivering
the system or giving a demonstration, including connection, installation and network
design.
The latter half introduces a list of sales aids designed to expand your sales.
Standard Hardware Configuration (1 conference point)
Panasonic Products
Product Name
1
HD Visual
Communication
Unit KX-VC500
2
Boundary
Microphone for
HD Visual
Communication
Unit KX-VCA001
3
Appearance
Product Name
5
Digital Video
Camera
6
HDMI Mini Cable
3m
7
42-inch Full HD
Plasma Display
panel
4
HDMI Cable 2m
Wide Angle
Conversion Lens
Appearance
Sales Knowledge
29
Sales Support
System Connections
30
Amplify the signal with an amplifier to the line level before connecting the general microphone to
the audio input terminal with a stereo-pin-type cable, If both the boundary microphone and a
general microphone is plugged in, both input from both microphone are effective.
The suitable resolution for sharing the PC documents are,
VGA (640 × 480)、SVGA (800 × 600), XGA (1024 × 768).
See below for details about the refresh rate.
General Purpose
Microphone
Microphone
Amplifier
Using a
Sub-camera
Notebook
Boundary Microphone（dedicated）
KX-VCA001
Maximum of 4 Boundary Microphones are
connectable.
The microphone’s connector is the same for input
and output. Boundary Microphones and general
microphones can be used together.
Multiple microphones
are cascade
connected
①RS-232C terminal:
For connection of a
maintenance PC.
②Camera control
terminal: Nonusable
Sub-camera
Main Camera
①
Any video
camera used
must have an
HDMI output
resolution of
1080i.
②
Resolutions required for sharing the
screen content of a personal computer
HD television
Recommended
router:
CISCO ISR1841
To Internet
* SXGA（1280 × 1024）is not supported.
In case of a Panasonic television
– Setup of commercial use PDP
：Use "Image Position/Size Menu" for horizontal/vertical adjustment of image
position/size.
Set Volume Adjustment, Volume Auto and Surround to OFF.
– Setup of household use PDP
：Under "Settings", "Display settings", set "HD display size" to "Full size".
To power outlet
To speaker or
amplifier
In case of TV without a HDMI
terminal, use a component
cable for connection.
Sales Support
System Installation
Mounting fixture for
main camera
Main Camera
HD television +
free-standing TV stand
Camera installation
HD Visual Communication Unit
Boundary Microphone
（for number connectable
see page 40）
Fix the special fixture for installing
the camera on the rear of the
stand.
31
Sales Support
Installation of Boundary Microphone
32
* Sound collection range of
microphone
Install the microphones to match the layout
Bad Example to install the microphone
<Example for 1 microphone>
Television
Noise level/
microphone
40 dBsplA
(quiet
meeting
room)
40 dBsplA
(normal
sound level
meeting
room)
40 dBsplA
(noisy
meeting
room)
4m
There are not enough
sound reflecting surfaces
around the microphone
Microphone
<Example for 2 microphones>
<Example for 3 microphones>
<Example for 4 microphones>
4m
Television
4m
Television
Microphone
4m
Television
Microphone
Microphone
4m
Microphone
4m
Microphone
Microphone
4m
4m
Microphone
Microphone
4m
Microphone
Too close to the
TV speaker.
Keep a distance
of at least 1 m
Sales Support
Basic Operation
[Before starting communication]
[Starting communication]
①Make sure that all components other than the Main Unit
(television, video camera, microphone, etc.) are
powered up.
①-1 When using a speed dial
Select speed dialing
For details see the Operating
Procedure in the appendix
Press [Start] to start transmission
<From Main
Unit>
<From remote
control>
②Turn on the Main Unit.
①-2 When using the address book
Press [Menu]
33
Use [▲][▼] to select "Open address
book" and press "Set“
Press [Start] to start
transmission
Use [▲][▼][◄][►] to select your contact
③The home screen appears.
② Answering an incoming call
When you hear the ringtone and the dialog box appears, press [Start]
<From remote control
>
<From Main
Unit>
If you have selected automatic answering, it will connects automatically when the call
comes in.
Sales Support
Basic Operation
[Convenient functions: Video]
[Convenient functions: Audio]
①Changing the screen layout (2 conference points)
①Mute the microphone
Press [Layout] during a communication
• Each time you press the button, the screen layout changes in
the sequence shown below.
During a 2-point
communication
Layout 1
For details see the Operating
Procedure in the appendix
If you do not want the other party to hear your voice during a communication, you can turn off
the microphone.
<From remote
control>
<From the microphone>
Layout 2
Layout 3
Red light:
Green light:
Communication ongoing
A：Other party B：Local image
Microphone off
②Screen content/video sharing
PC screen
You can connect a computer to the Main Unit and display your PC screen content on the
other party's television screen.
• SXGA resolution is not supported.
Local point
②Adjust the audio volume/quality
The sound volume/quality can be adjusted during communication.
Remote point
[+] higher
[‒] lower
Internet
Sub-camera image
Connect one more video camera to the Main Unit and display the image of that camera on
the other party's television screen.
Local point
The sound quality can be adjusted during
communication.
Remote point
Internet
34
The mode returns to "Standard"
when the communication ends.
Sales Support
Basic Operation
[3-point communication]
①Registration for multipoint conferencing
Before conducting a 3-point video conference, the conference parties
need to be registered as a group.
Select Party 1 and Party 2 to establish a multipoint conference group
from the address book.
If the IP addresses of the parties in a 3-point conference are not listed
in the address book, first register their IP addresses, then register
them in the group for a 3-point conference.
A maximum of 99 addresses can be stored in the address book.
②Multipoint communication
Followings are the procedures for a 3-point conference:
・Call out using the speed dialing
・Call out using the home screen (operation from the Main Unit)
・Call out using the home screen
(operation from the remote control)
･Call out using the menu screen
(operation from the remote control)
・Call out using the address book
* If only one party responds to a 3-point conference call, it automatically becomes a 2-point
conference.
*Call out from the menu screen allows you to select your conference parties from maximum of
99 speed dial numbers (1 to 99) (Call out using the home screen allows you to select
conference parties from a maximum of 5 parties (1 to 5) speed dial numbers).
Example of a 3-point
connection screen
For details see the Operating
Procedure in the appendix
Each time you press 【Layout】 the screen layout changes
in the sequence shown below. Pressing 【Blue】, 【Red】,
【Green】 changes the screen layout directly to the pattern
displayed on the screen buttons.
Conference point A
Conference point B
(Local conference
point)
Party 1/Party 2
Party 1 (Party 2)
35
Party 1 (Party 2)
Local point image
Constraints in 3-point conferencing
･You cannot make a call out for a 3-point conferencing by inputing the IP addresses directly
(The other 2 remote conference points for a 3-point conference must be stored beforehand).
･You cannot call out for a 3-point conference from the calling history.
･You cannot set up a 3-point conference by adding another new party while having a 2-point conference.
･When one party in a 3-point conference cuts the connection, the remaining 2 parties also will be cut off.
36
HD Visual Communication System [Sales Manual]
Appendix
This chapter presents a roundup of descriptions for detailed setting of
components, related equipment, and a Q&A section.
It also provides definitions of frequently used terms.
Appendix
Initial Settings
After turning the KX-VC500 on, you need
to set the device name, date and time, and
network settings.
These settings can be changed later.
1. Press [Power] to turn on the KX-VC500.
• The device name setting screen is
displayed.
2. Enter a name for the device (up to 20
characters) (Page 24).
• The default name is "KX-VC500".
• Only alphanumeric characters can be
entered.
5. Enter the date and time using the remote
control.
• Enter the year (4 digits), month (1–2 digits),
day (1–2 digits), and time (24 hour display).
▲
▲
3. Press [G].
4. Select "Yes" using [ ][ ], then press
[Enter].
• The date and time setting screen is
displayed.
▲
9. Press [G].
10. Select "Yes" using [ ][ ], then press
[Enter].
• Settings become effective after the automatic
restart.
▲
▲
▲
6. Press [G].
7. Select "Yes" using [ ][ ], then press
[Enter].
• The network settings screen is displayed.
8. Select the desired setting using [▲][▼], then
enter a value.
• If the value contains 1 or 2 digit numbers,
enter these numbers as they are. Do not enter
like [.001].
Example: The value is [192.168.0.1].
– Correct entry: [192.168.0.1]
– Wrong entry: [192.168.000.001]
Note
•If the IP address contains an invalid value, a message will appear requiring
you to enter a valid IP address.
•A multicast address or broadcast address cannot be used for the IP address.
•You cannot connect transmit to a party with a different encryption setting.
37
Appendix
Screen Display
Home Screen (Idle Screen)
Displayed when the power is turned on. Also
displayed when the [Home] button is pressed
on the KX-VC500 or on the remote control.
{1} Main Video Camera Image
Displays the video from the main video
camera.
{2} Unit Information
Displays the KX-VC500's name and IP
address.
{3} Site/Group
Displays the name/group name assigned to
One-Touch Connection number 1 through 5. If
the name is too long to display, it will be
shortened and ended with "...".
{4} Guide
Displays operations you can perform with the
remote control.
{5} Status Indication
The status of the KX-VC500 is displayed with
an icon.
Icon
Status
Microphone is muted.
LAN cable or peripheral connection
error (no connection, device error,
etc.).
Menu Screen (Idle Screen)
Video Conference Call Screen
Displayed when [Menu] is pressed on the
remote control. Displays operations you can
perform and settings you can change.
{1} Main Video Camera Image
Displays the video from the main video camera.
{2} Unit Information
Displays the KX-VC500's name and IP address.
{3} Guide
Displays operations you can perform with the
remote control when performing features or
changing settings.
{4} Menu List
Displays the various functions you can use and
settings available to change.
{1} Other party's information
When registered in the contact list: The other
party's name/group name is displayed.
When not registered in the contact list: The
other party's IP address is displayed.
{2} Video Image
Displays the other party's video, your own
video, or video from the secondary video input
such as a computer display or a sub video
camera. (Page 37, Page 39)
{3} Subscreen
Depending on the screen layout, your own
video or the other party's video is displayed
here. (Page 30, Page 31)
{4} Duration
Displays the duration of the current video
conference call.
{5} Guide
Displays operations you can perform with the
remote control.
Note
• Pressing [Full Screen] on the remote control
will hide or unhide the other party's information,
duration, and guide displays.
38
Appendix
Screen Display
Calling Using Speed Dial
(2-party Conference/3-party Conference)
Note
• To call using speed dial, you need to have a speed dial
number programmed in "Speed Dial Quick Connect" in
the Contact List. (Page 43)
Calling from the Home Screen
(Operation with the Main Unit)
1. Press [Home].
• The Home screen is displayed. 1 2 3 4
2. Press [One-Touch Connection] (1 to 5).
• The LED for the One-Touch Connection number
you pressed lights up.
• The information registered to the selected
One-Touch Connection number is displayed.
3. Press [Start] to start the call.
4. When you want to end the call, press [End].
• The Home screen is displayed.
Calling from the Home Screen
(Operation with the Remote
Control)
Calling from the Menu Screen
(Operation with the Remote
Control)
1. Press [Home].
• The Home screen is displayed.
2. With the dial keys, enter a One-Touch
Connection number
(1 to 5).
• The information
registered in the selected
One-Touch Connection
number is displayed.
3. Press [Start] to start
the call.
• You can also start the
call pressing [Enter].
4. When you want to end
the call, press [End].
• The Home screen is
displayed.
Note
• From the Menu screen, you can make a video
conference call using up to 99 speed dial
numbersQuick Connect numbers (1 to 99). (From the
Home screen, you can make a video conference call
using up to 5 One-Touch Connection numbers (1 to
5).)
1. Press [Menu].
• The Menu screen is displayed.
2. Select "Speed DialQuick Connect" using
[▲][▼], then press [Enter].
• TheSpeed Dial Quick Connect
screen is displayed.
Note
• If you press [B], the Contact
List modification screen will
be displayed and the entry
can be modified. (Page 44)
3. With the dial keys, enter
a Quick speed dial
numberConnect number
(1 to 99).
4. Press [Start] to start the call.
5. When you want to end the
call, press [End].
• The Home screen is displayed.
39
Appendix
Screen Display
Calling from the Contact List
Calling by Entering an IP Address
Calling from the Call History
(2-party Conference/3-party Conference)
You can make a video conference call by entering
the IP address of the party you want to call. Only
2-party
video conference calls can be made using this
method.
1. Press [Menu].
• The Menu screen is displayed.
2. Select "Manual Dial" using [▲][▼], then press
[Enter].
• The Input screen is displayed.
3. Enter the IP address.
• If the IP address contains 1 or 2 digit numbers,
enter these numbers as they are.
Do not enter like [.001].
Example: The IP address is [192.168.0.1].
– Correct entry:
[192.168.0.1]
– Wrong entry:
[192.168.000.001]
• Make sure that "Auto"
(default) is set in "Max.
Bandwidth". If you want to
change the value to other
than "Auto", consult your
dealer.
4. Press [Start] to start the
call.
• You can also start the call
by pressing [Enter].
5. When you want to end
the call, press [End].
• The Home screen is
displayed.
You can make a video conference call from the
Call History. Only 2-party video conference calls
can be made using this method.
The last 30 video conference calls made and
received are stored in the Call History, in order of
newest to oldest call. When making a 3-party video
conference call, the call information of the called
parties is stored separately.
On the other hand, when receiving a 3-party video
conference call, only the call information of the
calling party is stored.
1. Press [Menu].
• The Menu screen is displayed.
2. Select "Call History" using [▲][▼], then press
[Enter].
• The Call History Log screen is displayed.
1. Press [Menu].
• The Menu screen is displayed.
2. Select "Contact List" using [▲][▼], then press
[Enter].
• The Contact List screen is displayed. The
entries are grouped in the index tabs and
displayed in alphabetical order of "Site/Group".
Note
• You can also open the Contact List screen pressing
[Contact] from the Home
screen.
▲
▲
3. Select the entry you want
to call using [▲][▼].
• You can switch the index
tab back and forth using
[ ][ ]. (Index tabs in which
no entries exist will be skipped.)
4. Press [Start] to start
the call.
5. When you want to end
the call, press [End].
• The Home screen is displayed.
Note
• If a party is not registered in your contact list, their IP
address will be displayed.
• When a contact in the Call History is newly added to
your contact list, the Call History will be updated to
display the contact's information from the contact list.
3. Select the party you want
to call using [▲][▼].
4. Press [Start] to start
the call.
5. When you want to end
the call, press [End].
• The Home screen is
displayed.
40
Appendix
Answering
Answering a Video Conference
Call
Depending on the system settings, you can
either respond to a request to participate in a
video conference call manually (manual
answer) or automatically (automatic answer).
For details, consult the dealer.
Note
• Make sure that peripheral devices (e.g., display,
main video camera) are turned on.
When Manual Answer is Set
When a video conference call is incoming there
will be an incoming call ring, and a dialog box is
displayed.
When the caller is registered
in the contact list, the caller’s
site/group is displayed.
When the caller is not
registered, the caller’s IP
address is displayed.
Changing the Screen Layout
during a 2-party Video Conference
Call
You can choose from 3 different screen layouts
when taking part in a 2-party video
conference call.
1. Press [Layout].
• The screen will cycle through the
available layouts each time you
press [Layout].
– Layout 1: The other party's image
is displayed full screen.
– Layout 2: The other party's image is displayed
full screen, and your own image is displayed in
the upper right subscreen.
– Layout 3: Your own image is displayed full
screen.
Layout 1
Layout 2
Note
• If you do not answer a video conference
call within approximately 60 seconds,
the call will be terminated automatically.
When Automatic Answer is Set
When a video conference call is incoming the
call will be automatically answered after one
ring, and
transmission then begins.
You can switch the display from the main video
camera to the computer screen during a video
conference call.
1. Press [PC].
• The computer's screen is displayed.
The computer screen is also shown
on the other party's display.
Note
• If a sub video camera is connected, you
can also switch to the sub video camera
image by pressing [Camera Sub].
(Page 39) Only the party that pressed
[PC] can perform this operation.
2. Press [Camera Main] to
return to showing the main
camera's image.
Note
• Only the party that pressed
the [PC] button can perform this
operation.
パソコン画面
共有イメージ
Displaying the Sub Video Camera's
Image
Operation with the Main Unit
1. Press [Start].
• The video conference
begins.
Operation with the Remote Control
1. Press [Start].
• You can also answer the video
conference call by pressing [Enter].
• The video conference begins.
Displaying the Computer's Screen
You can switch the display from the main video
camera to a sub video camera during a video
conference call.
1. Press [Camera Sub].
• The sub video camera's image is
displayed. The image is also visible
on the other party's display.
Layout 3
A: Other Site
B: This SiteOwn site
Note
• You can press [B], [R], or [G] to switch the screen
layout to that button's pre-assigned layout.
– [B] "Other Site" : Layout 1
– [R] "Both Sites" : Layout 2
– [G] "This SiteOwn site" : Layout 3
• When using a secondary video source (Page 37,
Page 39), the screen layout cannot be changed.
Note
• If a computer is connected you can
also switch to the computer screen's
image by pressing [PC].
(Page 37) Only the party that
pressed [Camera Sub] can
perform this operation.
2. Press [Camera Main] to
return to showing the main
camera's image.
サブビデオカメラの映像
Note
共有イメージ
• Only the party that pressed
[Camera Sub] can perform this operation.
41
Appendix
Registering the Parties for a 3-party Video Conference Call
▲
▲
▲
▲
The screen will cycle through the
available layouts each time you
press [Layout].
You can press [B], [R], or [G] to
switch the screen layout to that
button’s pre-assigned layout.
Layout 1
Layout 2
Layout 3
Layout 4
▲
1. Press [Menu].
• The Menu screen is displayed.
2. Use [▲][▼] to select "New Contact" and
press [Enter].
• The contact list registration screen is
displayed.
Changing the Screen Layout during
a 3-party Video Conference Call
▲
To make a 3-party video conference
call, you need to have the parties
registered in the Contact List.
Select the parties for "Site 1" and "Site
2" from the Contact List.
If the IP addresses of desired parties
are not registered in your contact list,
register the IP addresses before
registering the parties for 3-party video
conference call.
3. Use [▲][▼] to select the below items for input:
"Site/Group": Enter a name for the contact (up to
16 characters) (Page 51)
"Quick Connect Speed Dial": Enter a speed
dial number (1–99)
"Multi-Point": Use [ ][ ] to select "NoYes“
"Site 1"/"Site 2": Select the site from the
Contact List screen as follows.
1. Select "Site 1" or "Site 2" using [▲][▼].
2. Press [Enter].
･ The Contact List screen is displayed.
3. Select the entry you want to call using
[▲][▼].
･ [ ][ ] You can switch the index tab
back and forth using[▲][▼] or dial keys.
4. Press [Enter].
･ The Contact List screen is displayed.
4. Press [G].
• A dialog box to confirm the saving of settings is
displayed.
5. Use [ ][ ] to select "Yes" and press [Enter].
• The contact list screen is displayed.
* To continue entering another contact, press [B]
and repeat steps 3–5.
6. Press [Home].
• The Home screen is displayed.
A: Site 1
B: Site 2
C: ********
– Layout 1: Image of Site 1 on the
left and image of Site 2 on the right.
– Layout 2: Image of Site 1 is displayed full
screen and image of Site 2 is displayed in the
upper right subscreen.
– Layout 3: Image of Site 2 is displayed full
screen and image of Site 1 is displayed in the
upper left subscreen.
– Layout 4: Your own image is displayed full
screen.
• When using a secondary video source (Page
37, Page 39), the screen layout cannot be
changed.
42
Appendix
Q&A
Questions
Answers
Questions
Answers
Is it correct to classify the
system comprised of these
products as a video
conferencing system?
It is a visual communication system that has changed the concept of
the conventional TV conferencing system for being capable of
showing even the texture of materials in full High Vision by simply
connecting two ordinary digital video cameras.
What is rate control by
estimation of the available
bandwidth (TRFC)?
TRFC is short for TCP Friendly Rate Control. It refers to calculating
the transmission rate based on the predictable TCP throughput on
the same channel.
What novel features does
it have?
It features absolutely full duplex communication that allows parties to
talk at the same time without experiencing clipped audio.
Were there any obstacles
to overcome in your
development work?
Yes, we had to solve the problem of providing high-definition visual
communication given the low bandwidth of optical communication
services, etc. available to the consumer.
What is automatic rate
control, forward error
correction (FEC),
automatic repeat request
(ARQ), and decoder error
hiding ? Please give a
simple explanation.
In what respect is your
product superior to those
of other manufacturers.
・The HD quality and performance other companies offer at $30,000
is
offered by us at $10,000.
・You can talk at the same time without experiencing clipped audio
(absolute full duplex audio)
・You can use the system safely over an Internet connection.
（Rate control by estimation of the available bandwidth maintains
communication quality and prevents packet loss.）
Can the customer record
the visual and audio
content of a meeting?
The analog signal output at the component terminal (YPbPr) can be
videotaped.
Are there any security
problems when connecting
to the Internet?
No problem. A VPN router is connected, and the Main Unit has a
built-in AES encryption function.
Automatic rate control: Adjusting the data volume transmitted to the
level of network congestion
Forward error correction: A system that adds redundancy to the
transmitted data to allow the receiver to detect and correct errors
without the need to ask the sender for additional data. (Error
correction by time-consuming resending is not suitable for
transmitting moving pictures, which requires real-time performance.）
Automatic repeat request: A system that notifies the sender when
the network was unable to transmit data correctly and then
retransmits only the unsent data. Because only the unsent data is
retransmitted, the data volume transmitted via the network can be
kept lower (However, the system is not suitable for applications with
a large network delay, because requesting retransmission and
retransmitting the unsent data requires time)
Demarcation between forward error correction and automatic repeat
request: FEC is used for networks with a large network delay, and
automatic repeat request with its smaller volume of redundant data
(required data other than video and audio) is used for networks with
a small network delay. You don't have a choice between the two
methods. Depending on the network delay, you use both by
adjusting the balance adaptively to the optimum value.??
Decoder error hiding: Data packets where network transmission
errors occurred, which cannot be corrected by FEC or repeat
request, are subjectively and discreetly modified
What are the special
features of the Boundary
Microphone?
It is capable of 360°stereo sound pick-up in all directions. When the
video camera is located in the same direction as the speaker and the
microphone faces the speaker, it will pick up the sound coming from
the right for the left channel and the sound from the left for the right
channel, so that the audio will be heard from the same direction as in
the video.
How much delay is there?
One-way: less than 300msec
【Breakdown】
Main Unit delay (encoding/decoding): 200 to 220msec
Camera/display delay： approx. 60msec
Transmission delay: depends on connection
* Between Tokyo and Osaka over an optical fiber connection approx.
6msec
Can the customer install
multiple Boundary
Microphones?
Yes, you can connect a maximum of 4 Boundary Microphones in
cascade connection.
Can the customer connect
a microphone other than
the Boundary Microphone?
Yes, it can be connected to the RCA terminal. In this case, however,
some settings need to be changed at the receiving terminal because
audio and video tend to get out of sync.
What is a stereo echo
canceller?
What is full duplex audio?
What is unique about this
technology?
When audio was still monaural, there was only one channel between
speaker and microphone; in stereo, we have 2 speaker channels
and 2 microphone channels, that is, 4 channels in all. In the past, it
had been difficult to correct stereo echo because estimating the
amount of echo is four times more complicated than for monaural.
Panasonic applied independent component analysis to uniquely
improve an algorithm for echo cancellation, and developed a stereo
canceller that is capable of accurately estimating stereo echo.
Full duplex audio: Audio amplified by the speaker is picked up by the
microphone and returned. A system that turns off the microphone
when the other party's audio is amplified by the speaker is called half
duplex. On the other hand, a system where the other party's audio is
continuously picked up by the microphone when amplified by the
speaker, so that there are no gaps in the audio, is what is called full
duplex.
43
Appendix
Q&A
Questions
Answers
Questions
Can I connect a display or
camera by a different
manufacturer?
You can connect any display or camera having an HDMI interface. In
this case, however, we cannot guarantee performance.
Input resolution for the camera should be 1080i.
Can the customer connect
a projector?
An HD-ready or Full HD-ready projector can be connected to an
HDMI or analog component signal.
Image is un-shown even if
turning screen standby
OFF.
Please check the energy saving setting (no signal automatic OFF
function) of TV.
When no signal automatic OFF function (function that turn power
OFF automatically after a certain time when visual input becomes no
signal) of TV is valid, image will not show even if turning screen
standby OFF.
Either void no signal automatic OFF function or power cycle of TV.
Can the system handle
video output from multiple
display devices? Can it
output the camera image
and the image on the PC
screen to different display
devices?
You can connect the HDMI terminal and the component terminal to
different display devices and display the same picture.
Displaying the camera image and the image on the PC screen on
different display devices is not possible.
Top/bottom or left/right of
screen may seem chipped.
Please set TV screen display mode to full screen display.
Please refer to TV instructions before use.
For Panasonic brand TV:
Set up to “full size ” for “HD display domain” of “screen setting” of
“set up”.
For automatic incoming
call, what are necessary
items to pay attention to?
When setting as automatic incoming call, unintended call may
automatically be received with a threat of peeping. Provide a
thorough explanation to customers and upon recognition of the
threat, turn power OFF when it is not in use.
Is it HDCP compliant?
It is not compatible with the HDMI signal of components with HDCP
functional protection.
* For example, it cannot transmit the HDMI output of DIGA
recorders.
Can you run the system
over a company line?
It could affect the company's network bandwidth. And this could in
turn seriously affect the customer's current operations. Please
suggest applying for a separate line.
Unable to determine
whether inbound and
outbound call log is 2 point
call or 3 point call.
At this point, it is unable to determine whether it is 2 point call or 3
point call.
Occasionally, outgoing call
log record does not
remain.
No record remains in outgoing call log for the following cases.
1, When calling the wrong IP address
2, When receiving incoming call at the same timing as outgoing
call, call operation is invalid and incoming operation is conducted.
Occasionally, incoming call
log record does not
remain.
No record remains in incoming call log for the following cases.
1, Receiving incoming call while system is activating
2, Forced disconnection of incoming call due to malfunction
3, Mismatch of encryption setting of incoming call
4, Mismatch of system version of incoming call
5, Incoming call while calling
6, Receiving incoming call at the same timing as outgoing call then
return
to standby screen after "collision of outbound and inbound call" is
displayed
7, Incoming call while system error
8, Incoming call while maintenance (service stop)
How do you operate the
camera's zoom and pan
functions?
The video camera can be controlled with the remote control that
came with the camera.（Digital Video Camera HDC-TM700: Zoom,
System Camera AW-HE50: Pan, tilt, zoom)
Does the interrupt function
of a remote conference
point work during a
communication?
No, it does not.
Answers
44
Appendix
Terms you would want to know: Audio Visual
4K2K
PDP (Plasma Display Panel)
Image display technology with a high resolution of around 4,000 (H)×2,000 (V) pixels. "K" stands for
"Kilo". It has roughly 4 times the number of picture elements of Full HD (1,920×1,080). Occasionally
it also refers to a specific resolution, such as 3,840×2,160 or 4,096×2,160.
A video interface standard developed for connecting a computer display device to a computer. It is
designed to allow direct transmission of digital signals from a computer to a digital display device
such as an LCD. It uses TMDS (Transition Minimized Differential Signaling), a serial transmission
format developed by Silicon Image, Inc. Previously, image data stored in digital format on the
computer was first converted to analog signals and then output to the display. DVI eliminates signal
degradation due to conversion, resulting in a higher image quality.
A type of flat panel display (FPD), where a rare gas is enclosed between two panels of glass and
made to emit light by application of a high voltage. The principle was discovered in 1966 at the
University of Illinois in the USA, in the 1980s plasma display panels came into use as computer
displays, and in 1997 they became generally popular with the release of plasma television sets by
Pioneer.
The principle is the same as that of a fluorescent lamp. A rare gas, such as helium or neon, at high
pressure is enclosed between 2 glass plates to form electrodes. Applying an electric voltage causes
the gas to ionize and form a plasma. Compared with other display technologies such as the LCD, the
PDP features a higher response speed, a higher contrast ratio, a wider viewing angle, and it can be
produced in larger sizes, all characteristics that have contributed to making it the most popular large
size flat panel television (plasma television).
EL (Electroluminescence) Display
Aspect ratio
A display that makes use of an optical and electrical phenomenon where a material emits light in
response to an electric current passed through it. This is made use of by depositing
electroluminescent material on a glass substrate and controlling an electric voltage applied to the
substrate to achieve a display effect. EL uses a low electric current to produce high levels of
luminance, visibility and response speed, and offers a long lifespan and low power consumption.
Electroluminescent display devices can be designed as flat panels like LCDs. Depending on whether
the deposited material is inorganic, such as zinc sulfide, or organic such as a diamine, they are
referred to as inorganic or organic electroluminescent displays.
The inorganic EL display of the past had problems, including difficulties with color display, which
limited its applications. Practical uses include displays for medical equipment, cash registers in 24hour convenience stores, and computer displays aboard the space shuttle.
In recent years, research is proceeding with organic EL displays which do not have the shortcomings
of inorganic EL displays, and they have found applications in areas such as displays for handheld
devices. The EL principle is also used to produce backlights for LCDs.
The aspect ratio of a screen or an image is the ratio of its height to its width (number of pixels).
Whereas ordinary computer displays, terrestrial TV broadcasts and BS broadcasts except for Hi-Vision,
have an aspect ratio of 4:3, Hi-Vision broadcasts including BS digital broadcasts use the 16:9 aspect
ratio, resulting in a screen that is greater in width than in height. Computer monitors such as SVGA,
XGA, UXGA, and SXGA+ have an aspect ratio of 4:3, only that of the SXGA monitor is 5:4. Some
notebooks and PDAs will have other aspect ratios like 2:3, which means they are higher rather than
wide.
DVI (Digital Visual Interface)
FSTN (Film Super Twisted Nematic) LCD
Uses a single film compensating layer (film) between the LCD panel and rear polarizer for added
sharpness and contrast. Types using 2 compensating films are called TSTN (Triple Super Twisted
Nematic) LCDs.
With many of the STN and DSTN LCDs of the past, light was polarized elliptically because of the
wavelength used elliptically polarized, and there were problems not only with color display but with
black-and-white display, as well. To compensate for these shortcomings, FSTN has a phasecompensating, birefringent polymer film applied to the surface of the LCD operating cell to improve
the liquid display performance.
This results in a reduction in size and weight, lower power consumption and lower cost as compared
with conventional displays. FSTN LCDs are, therefore, often used in cell phones and PDAs
(Personal Digital Assistants), but because the shortcomings of the STN type have not been
overcome completely, the TFT type is the mainstream for use in notebooks and LCDs.
TFT (Thin Film Transistor) LCD
A type of LCD display that uses thin-film transistor technology. The transistor is formed by applying
amorphous silicon, etc. on a glass substrate. It is used for LCD panels.
Liquid Crystal Display (LCD)
Refers to a display device that uses liquid crystals. A structure to electronically display an image is
obtained by supplying an electric charge to a liquid crystal material enclosed between two glass
substrates to change the direction of the liquid crystal alignment, and increasing and decreasing light
transmittance. While the crystal material itself does not emit light, a display is produced by using
reflected light to reproduce bright areas and fluorescent light projected ?? from the rear (backlight) to
reproduce dark areas. LCDs are roughly divided into passive matrix types such as STN and DSTN,
and active matrix types like TFT, the former being cheaper to produce but inferior to the latter in terms
of performance. Compared with other display devices such as CRT displays and PDPs, LCDs are
thinner and lighter in weight, and are therefore the preferred choice for portable computers and smallfootprint desktop PCs.
45
Appendix
Terms you would want to know: Audio Visual
Screen resolution
Film valid pixels
Refers to the resolution of display devices such as computer monitors. In Japan and in the US, the
total number of pixels used to describe a 1024×768 display is often referred to as resolution (screen
resolution, browser resolution) in the computer field. This, however, is not the original meaning of the
term.
The pixels of an image which a digital camera or similar device records on a digital media such as a
memory card. A digital camera converts from several hundred thousand to several million lightreceiving elements to electric signals to record an image, but because the elements in the surrounding
area often contain noise, not all elements are converted. For this reason, the number of light-receiving
elements contained in an image differs from the number of pixels output to record the image. Since
products have come out recently which are designed not to output one pixel for each picture element
(for example, the Super CCD Honeycomb SR by FujiFilm), it is not always the case that each effective
pixel becomes a film valid pixel. In other words, it is common for a digital camera delivering 1.3 million
total pixels to output only 1280×960 pixels corresponding to a 1,228,800 pixel image. The total
number of light-receiving elements equipped is referred to as total pixels and the number of elements
that actually function and are recorded is called effective pixels.
Name
QQVGA (Quarter-Quarter-VGA)
Size
160×120
Total number of pixels
19200
QVGA (Quarter-VGA)
320×240
76800
WQVGA (Wide Quarter-VGA)
400×240
96000
HVGA (Half VGA)
640×240
320×480
Transmissive liquid crystal
153600
VGA
640×480
307200
SVGA (Super-VGA)
800×600
480000
XGA
1024×768
786432
1280×768
983040
1280×800
1024000
1366×768
1049088
WSXGA (Wide Super-XGA)
1280×854
1093120
Quad-VGA
1280×960
1228800
WXGA+ (Wide XGA+)
1440×900
1296000
SXGA (Super-XGA)
1280×1024
1310720
WXGA++ (Wide XGA++)
1600×900
1440000
SXGA+
1400×1050
1470000
WSXGA+ (Wide Super-XGA+)
1680×1050
1764000
UXGA (Ultra-XGA)
1600×1200
1920000
WUXGA (Wide Ultra-XGA)
1920×1200
2304000
QXGA (Quad-XGA)
2048×1536
3145728
WQXGA (Wide Quad-XGA)
2560×1600
4096000
QSXGA (Quad-Super-XGA)
2560×2048
5242880
QUXGA (Quad-Ultra-XGA)
3200×2400
7680000
4K2K
4096×2048
8388608
QUXGA Wide
3840×2400
9216000
WXGA (Wide XGA)
A liquid crystal type that displays using the backlight behind the screen as light source. Compared with
the reflective liquid crystal which displays by reflecting external light, the transmissive liquid crystal
offers high saturation, giving it good visibility in darker indoor locations. Its disadvantages are that its
power consumption is high and that it appears dark in bright outdoor locations. Recently a semitransmissive type of liquid crystal, representing a combination of the reflective and the transmissive
type, has come out, which uses backlight in the dark and external light in bright locations.
Pixel
A digital image consists of colored points. A digital image is formed by arranging these pixels orderly
lengthwise and breadthwise in a square (rarely rectangular) grid.
Multiscan display
A display that supports multiple scanning frequencies. Depending on the type/performance of the PC
and as needed, it can select several different display resolutions. In the past, displays that can use
only a certain resolution for a certain type of device used to be common, but nowadays the majority of
displays support multiscan. The performance index, a combination of display area and dot pitch,
expresses the maximum resolution a display is able to handle.
Mega-pixel
A unit to measure the performance of digital cameras having a resolution of 1 million pixels and more.
This class of digital camera is called a "mega-pixels camera" or "mega-pixel device". When digital
cameras equipped with a 1-million-pixel or more CCD first appeared, "mega-pixel picture quality" and
the like became widely used buzzwords. Terms like "1.92 mega-pixel" (= 1.92 million pixel) continue to
be used to express the resolution of a digital camera. In fact, most of the digital cameras sold these
days are mega-pixel cameras.
46
Appendix
Terms you would want to know: Storage
memo
AVCHD
A format for home-use digital cameras used for shooting and recording of high-definition video. It was
jointly developed by Sony Corporation and Panasonic (formerly Matsushita Electric Industrial Co., Ltd.)
and announced in May 2006.The AVCHD format allows video signals to be compressed in the MPEG4 AVC/H.264 format and recorded on 8cm small DVD disks. It is planned to expand this in the future
to recording on hard disk drives, memory cards, etc.
The main aim of AVCHD is to allow the recording of HD TV quality video even with lower volume and
lower speed media by using the H.264 format with its high compression ratio. People say said that
with a double-speed 8cm DVD, you can achieve almost the same image quality as with an HDV
standard tape cassette. On a single-sided disk, you can record roughly 20 minutes, and on a doublesides disk 40 minutes. The audio recording format used is Dolby Digital, allowing recording of highly
realistic audio in 5.1-channel surround. The video recorded on disk can be played back on an AVCHDcompatible Blu-ray Disc player, Sony's Playstation 3, etc.
Blu-ray Disc
A rewritable phase change optical disk for large storage volumes developed jointly by nine companies,
including Sony Corporation and Panasonic (formerly Matsushita Electric Industrial Co., Ltd.).It is a
standard for the so-called "next generation DVD" with a larger storage capacity than the current DVDs.
An optical disk with the same diameter as a CD or DVD, it is enclosed in a cartridge and has a
maximum recording capacity of 27 GB and a data rate 36Mbps. Using the shorter wavelength blueviolet laser, it achieves a track pitch of 0.32μm, which is roughly half that of the DVD, and reduces the
minimum pit length of each layer to around 0.14μm, resulting in a higher recording density.
As the format is mainly intended for consumer-oriented video recording applications, each disk has a
serial number recorded on it with copyright protection in mind.
RAID
A technology where two or more physical hard disks are combined into a single logical unit.
RAID is an acronym first defined by David A. Patterson, Garth A. Gibson, and Randy Katz at the
University of California, Berkeley in 1987 to describe a redundant array of inexpensive disks. By
distributing data over multiple disks for recording, RAID increases input/output speed and data
reliability. It does so by using special hardware or software. We differentiate by speed and data
reliability between different RAID levels numbered from RAID-0 to RAID-5.
Volume
In the present context, volume refers to OS formatted continuous storage areas, mainly a
management unit for an external recording device.???? When referring to a hard disk, the disk is
either taken to be one volume or is divided into partitions and each partition is called a volume.???
When composing a RAID disk array, a combination of multiple disks can sometimes be taken to be a
volume. In case of removal disks, one medium corresponds to one volume. The name assigned to
identify volumes is also referred to as volume (or volume label).
47
Terms you would want to know: Communication Services
Appendix
CCU
PPPoE (Point-to-point protocol over Ethernet)
Acronym for Communication Control Unit. A CCU controls the sending and receiving of data over
between a computer and a communication line. It performs signal conversion and error control. It is
usually built into the computer.
A network protocol that enables the use of PPP over Ethernet. It was standardized as RFC 2516 by
the IETF (Internet Engineering Task Force), an organization that develops and promotes Internet
standards,
While PPP was originally developed to connect to a network over communication lines requiring call
requests [??] such as telephone lines and ISDN lines, PPPoE is a version of PPP adapted to allow
"always on" connections via a LAN, etc. Different from ordinary PPP, PPPoE identifies both computers
by a unique MAC address and sets up a virtual channel between them.
With PPPoE, user authentication, IP address and so on can also be assigned over a LAN. It also lets
you switch easily between providers of always-on connection services such as ADSL, CATV and
optical fiber networks. Many ADSL providers in Japan, as well, use PPPoE.
Cisco Systems
A US manufacturer of communications equipment founded in 1984. The company is engaged mainly
in manufacturing and sales of equipment for telecommunications carriers. It is one of the world's
largest makers of communication devices such as routers and switches used in Internet and corporate
communication networks. It also conducts qualifying exams to certify the knowledge and skills of
engineers handling the company's products and is widely known among communication experts. It
was incorporated in Japan in 1992 under the then name of Cisco Systems Japan, Inc. (currently Cisco
Systems G.K.), where it engages in sales of Internet communication equipment, etc.
Echo canceller
Refers to a telephone exchange that connects the internal telephone lines of a business or provides
connection to public networks such as the public switched telephone network (PSTN) and the
Integrated Services Digital Network (ISDN).You can build up a wide-area telephone network by
interconnecting PBXs over dedicated lines.
Device or technology designed to prevent the input device from picking up electric signals or audio
output, resulting in the generation of echo and howling.
With a phone, for example, you could experience echo and howling when the phone's microphone
picks up output from the speaker. To prevent this, the handset has an echo canceller built in. There
are also external devices designed to suppress echo and howling among microphones, speakers and
audio equipment.
PPP (Point-to-Point Protocol)
Last one mile
A protocol that is widely used to set up a dial-up connection between a computer and a network. It
corresponds to the data link layer of the OSI reference model and is designed to work with numerous
network layer protocols. It can provide authentication and compression functions and will see
extended use in the future as new protocols are adopted.,
The "last one mile" or "last one kilometer" is the final leg of delivering connectivity from a
communications provider to a customer. Because the last mile of a network to the user is also the first
mile from the user to the world, "first one mile" is sometimes used, but terms change as an increasing
number of companies rethink their user focus.
In Japan, the last one mile consists mostly of phone lines, on which NTT WEST and NTT EAST have
a near monopoly. Making improvements to the communications environment is difficult, and while
there is a growing demand for high-speed connections, low line speeds and high communication
charges are the bottleneck.
To improve this situation, some carriers have started to lay independent optical fiber into subscribers'
homes by using wireless LAN and FWA (Fixed Wireless Access) technology to avoid the use of NTT's
metal lines, while cable network television stations tend to use CATV coaxial cables for connection to
the Internet or phone services.
At the same time, with lifting on the ban on connection to Main Distributing Frames (MDF), ADSL
which realizes high-speed always-on connection of high-frequency digital signals came into practical
use even among carriers using NTT's metal lines, and many start-ups became subscribers.
PBX (Private Branch eXchange)
48
Appendix
Terms you would want to know: Network
100BASE-T
IPv6 （Internet Protocol Version 6）
A cable standard developed by the IEEE802.3 Committee for Ethernet networks running at 100Mbps.
The standard covers twisted pair cables for a transmission distance of 100m in star connection.
The categories concerned are UTP (Unshielded Twisted Pair) or STP (Shielded Twisted Pair) category
5 cables or higher.
A next generation Internet protocol (IP) designed to succeed IPv4, which is threatened with address
exhaustion in the foreseeable future, to implement improvements such as a vastly larger address
space, additional security features, and hierarchical route aggregation.
MCU (Multipoint Control Unit)
DHCP (Dynamic Host Configuration Protocol)
A protocol that automatically assigns the necessary configuration information such as an IP address to
computers that are temporarily connected to a network like the Internet. It allows users to connect with
the appropriate settings without having to configure the network connection manually, so that even
inexperienced users can easily establish a connection. It also facilitates uniform management of a
large number of clients by a network administrator.
DNS（Domain Name System）
This system matches host names to IP addresses on the Internet. It serves as a distributed database
to which DNS servers worldwide contribute .It can resolve IP addresses based on host names and
vice versa.
Each DNS server possesses information on the domain it administers and stores its domain name and
address in the 10 root servers in operation worldwide.
The Multipoint Control Unit (MCU) is an endpoint on the LAN that provides TV conference systems
with the capability for 3 or more terminals to participate in a multipoint conference.
Some MCUs are integrated with the TV conference terminal.
MTU（Maximum Transmission Unit）
MTU is the size (in bytes) of the largest protocol data unit that the layer can pass onwards. The value
of the MTU can be fixed at the sending terminal. If the MTU of the sending host is greater than that of
the receiving host, the sending terminal will repartition the data according to the MTU on the receiving
side before sending it. Given that error data is retransmitted in units designated by the MTU, choosing
a smaller MTU under bad communication conditions can result in a higher transfer rate. The MTU is
expressed in bytes; the appropriate value for Ethernet is about 1500 bytes, that for a dial-up
connection is around 576 bytes.
ONU (Optical Network Unit)
H.323
A protocol used in the implementation of videophone systems, etc. that defines the audio, video, and
compression/decompression system for sending and receiving one-to-one audio and video over a
network. Designed for handling everything from VoIP to video conferencing, H.323 has found many
applications. As network speeds keep increasing and computers become ever more powerful, it has
come to be recognized as a useful protocol. A typical example of an H.323 application is Microsoft
NetMeeting included with Microsoft's browser.
HTTP
A protocol used by web servers and clients (web browser, etc._) to send and receive data. It can be
used to transfer files containing HTML text, images, and audio/video associated with text, together
with information such as semantic representations.
IEEE 802.1x
A standard that provides an authentication mechanism for LAN users. IEEE 802.11b, in particular, is
widely recognized as a user authentication specification for wireless LAN users and also supports
wired LAN. It prevents all communication from clients whose authentification fails (except
authentication request) and allows establishment of a connection only for authenticated clients. It also
allows for regular re-authentication to prevent port scanning by other users.
The ONU is a device for connecting a terminal such as a computer to an optical fiber subscriber
network. It is installed in the subscriber's home.
SMTP (Simple Mail Transfer Protocol）
A protocol for sending electronic mail (e-mail) across the Internet or an intranet. It is used for
transferring e-mail between servers and for sending e-mail from the client to the server.
T1
A standard for Digital Private Lines (DPL) established by ANSI (American National Standard Institute)
and used in Japan and North America. It applies to the 1.5Mbps (=24 x 64kbps) bandwidth. In Japan it
is implemented by optical fiber.
As video conferencing usually takes place over ISDN-PRI lines, it is used with 23 B channels + 1 D
channel or 24 B channels.
In video conferencing, it is applied mainly to the MCU or GW. The corresponding standard in regions
other than Japan and North America is E1。
T.120
An international standard for multimedia conferencing recommended by the.
It deals mainly with subjects such as whiteboards, application sharing, and file transfer.
An example of T.120 compliant software is Microsoft's NetMeeting.
IP（Internet Protocol）
A protocol developed by the Network Project of the U.S. Department of Defense. It corresponds to the
third layer (network layer) of the OSI reference model and defines methods for assigning addresses
(addressing) to devices using the network and selecting the communication path (routing) inside
multiple interconnected networks. Because it is a connectionless protocol, it needs to be used
concurrently with TCP in the next higher layer to ensure that data reaches its destination without fail.
TCP/IP (Transmission Control Protocol/Internet Protocol)
A set of communications protocols used for the Internet, intranets and other similar networks. It is the
result of a process to develop a computer network that would not fail in its entirety even if the U.S.
Department of Defense was partially destroyed by a nuclear attack.
49
Appendix
Terms you would want to know: Network
memo
VPN (Virtual Private Network)
A service that provides a secure extension of a private network into an insecure network such as the
Internet. VPNs are often installed by organizations to provide remote access to a secure organizational
network, because this is cheaper than installing a private line.
Global address
The IP address uniquely assigned to all devices connected to the Internet. It corresponds to the
address of a device on the Internet and is required for communicating over the Internet.
Ethernet
The most widely used LAN standard designed by Xerox and DEC and standardized by the IEEE 802.3.
Committee. Ethernet is divided into varieties based on quality.
Subnet
A subnet is the product of breaking up a large computer network into several smaller networks and is
used as a management unit for managing a network. A huge network like the Internet consists of a
large number of interconnected smaller networks. Large companies and organizations may break up
their network into several smaller units for better network management and more efficient allocation of
line resources. These smaller networks used as management units are called subnets. The IP address
that identifies the computer's address as per TCP/IP consists of the address of the subnet in which the
computer is located (subnet address) and the address of the computer in the subnet (host address),
while the higher-order bits are called the "subnet mask" and indicate the network address.
Redundant Packet
Refers to the sender sending extra data packets rather than just the minimum required data volume, to
ensure that even if some packets are damaged, video and audio data can be made available
continuously.
Hub
A device used as a branching or routing point for network cables forming a LAN or other network.
With a single hub you can build up a small and simple LAN. hub.
It has several RJ-45 ports and is used with 10BASE-T Ethernet cables (Ethernet over twisted pair).
There are many other types of hubs for different uses, such as hubs that control the network speed
(10BASE-T, 100BASE-T, switching hub) and so-called intelligent hubs equipped with management
functions.
Port
Communication over a TCP/IP network uses a port number from 0 to 65535 as auxiliary address
assigned under the IP address of communication devices and individual computers. This makes it
possible to provide multiple services with one computer and to communicate simultaneously with
multiple computers.
Router
An electronic device used to forward data between computer networks. In terms of the OSI reference
model, it forwards using the network layer (layer 3) protocols and some transport layer (layer 4)
protocols. Using its path select function, it checks the network layer address and decides the
forwarding route. Any data that does not correspond to its own protocol is discarded.
50
Appendix
Terms you would want to know: Multi Media
DLNA (Digital Living Network Alliance)
Pan/Tilt
A standard used by manufacturers of consumer electronics to allow entertainment devices within the
home to share their content with each other across a home area network (HAN). The term is also
used to refer to devices that have it built in.
Panning of the camera refers to its rotation in a horizontal plane, tilting refers to its rotation in a vertical
plane.
Frame rate
fps
A term to express the smoothness of video images. fps refers to the number of frames displayed
per second.
Describes the frequency (rate) at which an imaging device produces unique consecutive images per
second when playing back video.
White balance
HDMI (High-Definition Multimedia Interface)
A standard for a digital audio/video input/output interface, applicable mainly to electronic household
appliances and audio/video equipment, that was formulated in December 2002.
HDV (High-Definition Video)
A recording method for digital video, that records video in HDTV equivalent quality on DV cassettes.
NTSC (National Television System Committee)
Name of the U.S. standardization body that developed the standard for the ground-wave analog
color television broadcasting system. The standard adopted 525 horizontal scan lines and 30
interlaced frames per second (image is refreshed 30 times per second), a horizontal scan frequency
of 15.75kHz and a vertical scan frequency 60Hz.
In the context of cameras, this refers to a function that corrects neutral colors such as white, to ensure
that they are reproduced correctly under light sources of varying color temperatures. Without applying
white balance, a color that appears natural to the naked eye, will look unnatural when photographed with
a camera. For example, when shooting with daylight film or using daylight white balance under
fluorescent light, the image will appear unnaturally greenish. On the other hand, when shooting an object
lit by incandescent light using daylight film, the image appears slightly orange colored. This is
compensated by white balance.
720p
A video standard for an HDTV video mode with an aspect ratio of 16:9, 1280 (H) x 720 (V) pixels, and
progressive scan.
1080i
PAL (Phase Alternating Line)
A method for ground-wave analog television broadcasting. A broadcast television system developed
in Germany in 1967 that was adopted in large parts of the world, including Western Europe except
France, China and other countries in Asia, and Africa. The standard adopted 625 horizontal san
lines (525 in Brazil) and 25 interlaced frames per second (image is refreshed 25 times per second).
A video standard for an HDTV video mode with an aspect ratio of 16:9, 1920 (H) x 1080 (V) pixels, and
interlaced scan.
1080p
A video standard for an HDTV video mode with an aspect ratio of 16:9, 1920 (H) x 1080 (V) pixels, and
progressive scan.
VOD (Video On Demand)
A service which allows users to select and watch video content on demand.
Interlaced scan
Composite video
A monitor display format also called interlaced scan.
A small "i" is often attached to the name of video standards such as 1080i to make the distinction
between interlaced and progressive scan. It alternately scans or displays the odd lines and the even lines
of an image. It uses half the bandwidth that would be required for a full progressive scan while
maintaining the necessary refresh rate to prevent flicker.
A system for transmitting video signals by combining the luminance signal and the color signal into
one signal.
Progressive scan
Drop frame
Drop frames are frames which for some reason are dropped from a video (not played back).
Component Video
A system for transmitting video signals where the color components are separated from the video
signal and processed independently. For connection between equipment, there are three terminals
to which the component cable, composed of three bundled cables compatible with each of the
terminals, is connected.???
Howling (Audio feedback)
This refers to a phenomenon where the sound output by a speaker is picked up by a microphone
and fed back to the speaker, resulting in a continuous sound loop accompanied by a high-pitched
squealing noise.
A monitor display format also called non-interlaced scan.
A small "p" is often attached to the name of video standards such as 1080i to make the distinction
between progressive and interlaced scan. It scans or displays the lines of each frame in numerical
sequence. Progressive scan requires higher bandwidth than interlaced video, but suppresses screen
flicker.
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