Transcript plasma - CompanyCake.com - Have Your Knowledge and Use It Too!

Blue Ribbon Rentals
High Definition
Basics
We Live In An HD World!
In This Training You Will Learn All About HD:





Broadcast Systems
Video Resolution, Color, and Motion
Types of HDTV’s
HD Audio
HD Accessories
Broadcast Systems
NTSC – National Television System Committee
• Over-the-air analog color television broadcasting
system used in America since 1941
ATSC – Advanced Television System Committee
• Digital broadcasting system adopted in America June
12, 2009 spanning over-the-air, cable, and satellite.
What Is HD?
High Definition (n.): high definition (HD) is the highest
quality audio/video within the television spectrum as
defined by the ATSC.
Today’s HD world revolves around the pretty
face of television. Gone are the analog days of
twisting coat hangers and tin foil. However, not
all High Definition is created equal. As
technology evolves it’s imperative to keep up
with the ever-changing innovations.
HD Video
You’ve heard the buzz words! Customers
know what to ask for. HD Video display
devices are typically compared based on
2 key areas of quality and performance:
1. Resolution
2. Motion
(Contrast ratio and color capabilities can also factor into the decision)
HD Resolution
HD Resolution is the “physical” number of columns and
rows of pixels that create a display device.
The ATSC divides 3 resolution categories in 2 forms:
1.) Number of Pixels (Vertical x Horizontal)
2.) Number of Lines + Type of Scan
3 Current Resolution Formats
1.) 720 x 1280
2.) 1080 x 1920
3.) 1080 x 1920
or
or
or
720p
1080i
1080p
HD Resolution
Current HDTV Format(s)
Future of HDTV
HD Motion
(Refresh Rate)

To show moving images, a television has to change
out the pixels displayed on the screen. This is what we
mean when we say the television refreshes the image -it has to draw images in pixels so quickly that the human
eye can't detect the process. If televisions didn't refresh
the pixels, they could only display a still image. That's
not good TV.
Current Refresh Rates
60 hertz
120 hertz 240 hertz
Refresh rates are measured in hertz. So, a 60 hertz
HDTV means the screen displays an image 60 times
every second.
Interlaced vs. Progressive
The little “i” and “p” refer to the way in which the image is rendered on the screen
Interlaced: Scans the odd-numbered
horizontal lines first and then the
even-numbered lines – times the
specified refresh rate. (60, 120, 240)
Progressive: Scans every single
horizontal line times the refresh rate.
Ex: A 60Hz progressive scan TV
scans every line 60 times per second
vs. an interlaced which scans half
and half or the full screen only 30
times per second.
HD Motion
(Refresh Rate)
 Early LCD TVs had great resolution but
experienced problems when displaying fastmoving images on screen. Action movies and
sporting events in particular gave early LCD sets
problems. The images tended to blur as they
moved across the screen. Plasma screens didn't
have the same problem, giving that format the
advantage when it came to high-speed television
content.
HD Motion
(Refresh Rate)
The solution to the LCD problem was to
increase the refresh rate. A few years ago,
the first 120Hz sets showed consumers
that by doubling the refresh rate, the set
could reduce the blurring effect. Today,
refresh rates are common up to 240Hz
and beyond – including 3-D.
HD Motion
(Refresh Rate)
The higher refresh rates indicate that the
televisions refresh the screen more often
each second. Whether the faster rate has
a noticeable effect on the viewer's
experience is subjective. A viewer may not
be able to tell the difference between a
set refreshing at 120Hz and one with a
240Hz refresh rate.
HD Requirements
Just Think of
The 4 S’s
1.
2.
3.
4.
Screen
Source
Sound
Solutions
High Definition Televisions
(Screen)
3 Main Types
1. Plasma
2. DLP
3. LCD
High Definition Television
Plasma Display Panel HDTV
Based on the information in a video signal, HDTVs light up
thousands of tiny dots, called pixels. In most systems, there are 3
pixel colors – red, blue, and green – which are distributed evenly
across the screen. By changing the intensity of the light, color is
affected creating the desired image.
In a Plasma Display Panel (PDP), the fluorescent light is
created by a gas made up of free-flowing ions and electrons, called
plasma. The gas in a plasma television is contained in hundreds of
thousands of tiny cells positioned between two plates of glass. In
short, arranged in columns and rows, the PDP’s computer
electrically charges these cells producing the necessary light for
each pixel.
Plasma Display Panels
Pros





Deep blacks, sharp
color reproduction
Great for fast
motion
Slim design
Wide viewing angle
Cutting edge
technology
&
Cons





Use of glass
makes it heavy
Must be handled
upright
Reflective glass
High-energy
consumption
“Burn-in” myths
High Definition Television
DLP HDTV
Home Theater Television
Digital Light Processing
 Think more “bang for your buck”! DLP TVs are typically lower in
price than LCD or Plasma sets which allow the user to purchase a
larger screen size. While larger, the sets are still lightweight with a
surprisingly slim design.
 DLP Technology is used in many applications today:
•Rear Projection Home Theater TVs
•On wall projectors
•Commercial Entertainment Applications (concerts, stadiums, etc)
DLP Home Theater Technology
It’s All About The Mirrors!
DLP technology, developed by Texas Instruments, is based on an
optical semiconductor, called a Digital Micromirror Device (DMD),
which uses a series of mirrors reflecting light to form a picture. This DMD is
often referred to as the DLP chip. Each chip can contain more than 2 million
mirrors! The mirrors are laid out in a specific matrix, with each mirror
representing 1 pixel.
The mirrors are able to turn on or off allowing light to pass or not.
This can occur over 5,000 times per second, as needed. To add color, light
is passed through a Spinning Color Wheel and then onto the DLP chip, or
DMD. Some DLP Home Theater TVs can produce as many as 35 trillion
different colors.
Mitsubishi is our #1 partner when pertaining to Home Theater TV
DLP Home Theater Technology
Pros





Affordable
Huge Screen
Size
Solid Black
Levels
Lightweight
Every dealer
should carry!
&
Cons




*Bulb needs
periodic
replacement
Thicker and
bulkier than
flat panel
Less off-angle
performance
Rainbow
effects
* Bulb cost has reduced dramatically over the years.
High Definition Television
LCD HDTV
Many items use LCD, or Liquid Crystal Display technology.
Watches, clocks, computers, microwaves, and CD players to name
a few. LCD is common because of the fact that it is thinner, lighter,
and consumes less energy than it’s competitors, on average.
LCD technology uses the twisting and un-twisting of liquid
crystals to power their displays. Using red, green, and blue subpixels, the ability to add and adjust color is implemented. Light is
provided in a typical LCD to each pixel by cold cathode fluorescent
lamps (CCFL). Newer LCD technology now uses light emitting
diodes (LEDs) to fuel each pixel. LED TVs contain no mercury and
can be combined into even thinner frames, making them lighter
and more energy efficient.
LCD/LED TVs
Pros





Thinnest frames on
the market
Very energy
efficient
LED offers “plasmalike” black levels
Great resolution
Popular technology
&
Cons




Typically higher
priced
Lower black levels
Narrower viewing
angle than plasma
Response delay
can cause blur
HD Source
 While most people think of TVs when
they hear the words high definition, the
TVs themselves do not actually produce
the HD signal. Something has to send that
signal to the TV to display it. This is
known as the source, or the manner in
which you receive your high definition
signal. Without the appropriate source, a
customer’s HDTV is not HD at all.
HD Sources
Indoor/Outdoor HDTV Antenna
Online Content Provider(s)
DIRECTV, Cable/Sat Provider
Blu-Ray Disc Player/ PS3
High Definition Audio
(Sound)
Imagine watching the latest Hollywood release at the theater,
and listening to just a couple of tower speakers upfront…
What would your experience be? Is audio important?
HD Solutions
While Screen, Source, and Sound are components for
achieving high definition, these components need a way
to talk to each other. Don’t forget the connections! We
call these Solutions. Without the proper HD cables, your
system will NOT deliver high definition, period!
High Definition Cables Types
Component Video – Analog
cable will pass signal up to
720p/1080i – NO AUDIO.
Display Port – new digital
connection supports
advanced technologies
beyond 1080p + - NO AUDIO
DVI – Digital Video Interface
supports digital video up to
1080p – NO AUDIO
HD Solutions
HDMI
High Definition Multimedia Interface. HDMI is fast becoming the
standard for high definition connections. It carries full HD digital video
and complete, uncompressed lossless audio all in one cable. It is
convenient and outperforms all other connection types, currently, in
regards to bandwidth. A dealer MUST carry HDMI in order to offer a
“complete” system to customers. Estimates state that over 350 million
devices will take HDMI by 2011. It is a must have for any retail floor or
installer. There are different levels of performance depending on the
bandwidth the system requires. Pay special attention to the stated
bandwidth of the HDMI cable and match it to the performance of the
gear you’re hooking up.
We Live In An HD World!
High Definition is an ever-changing
technology. Every day something new is
invented or announced. Remember the basics
and learn from your dealers. Screen, Source,
Sound, and Solutions are all required to truly
experience the best high definition has to offer.
Make sure you show your customers how to
take advantage of an HD world!
Thank You for your time!!
Please contact
Aaron Steiner or Jewell Dolton
With any questions you might have.
DSI Systems Inc.
800-888-8876 Toll Free
614-871-1456 direct