Transcript Technology Overview

RTV 151
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3/21/2017
Communication Technology
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Audio Production
Video Production
Computers and the Internet
Consumer Technology
Video Gaming
Networking & Signal Distribution
Internet of Things ( IoT )
Virtual / Augmented Reality
Big Data
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Reminders
• Cell phones always off during class
• Course outline always guides study
and preparation
• You must have and read the book
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Class work
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Assigned reading – primarily textbook
Keep up with new technology – sign up and
do in-class reports
Four sections: test every four weeks
Random quizzes over reading
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www.tonydemars.com
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RTV 151 syllabus and outline
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COURSE GRADING:
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Grade evaluation:
Sectional Exams3 at 100 points each)…... 300
Final Exam................................................. 200
In-class technology reports.................…… 100
Attendance, Class Participation, Short
Assignments…........................................... 100
(bring textbook to class)
Announced and/or Unannounced Quizzes..... 100
(grades and attendance posted on Engrade)
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So some overview to get
started…
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History
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Industry
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Consumers
AF vs.
RF
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Gutenberg Bible
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Who remembers 1455?
The Gutenberg Bible was the first major book
printed using mass-produced movable type.
It marked the start of the "Gutenberg
Revolution" and the age of the printed book
in the West.
Why still important?
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‘Modern Times”
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Affordable, reliable electricity is fundamental to
modern life.
Italian physicist Alessandro Volta discovered
that particular chemical reactions could produce
electricity, and in 1800 he constructed the
voltaic pile (an early electric battery) that
produced a steady electric current, and so he
was the first person to create a steady flow of
electrical charge.
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1800 on … very condensed
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The History of Electric Energy did not begin
when Benjamin Franklin at when he flew his
kite during a thunderstorm or …
When Thomas Edison and Nicola Tesla were
battling to harness electricity
Imagine a world without electricity. No
computers. No televisions. None of the modern
"conveniences" we take for granted.
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1800 on … very condensed
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In the late 19th Century electricity was a new
marvel.
In the late 1870s, America's greatest inventor -Thomas Alva Edison -- developed and built the
first electricity generating plant in New York City.
By 1920 all of the nation's major cities had
competing electric companies, each with its own
sets of poles and wires.
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1800 on … very condensed
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During this same time period…
The telegraph -- developed in the 1830s and
1840s by Samuel Morse (1791-1872) and other
inventors … revolutionized long-distance
communication -- transmitting electrical signals
over a wire laid between stations.
“Texting in the 1840s”
Started the communications revolution
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1800 on … very condensed
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During this same time period…photography
Around 1800, when Thomas Wedgwood made
the first reliably documented although
unsuccessful attempt.
In the mid-1820s, Nicéphore Niépce succeeded,
but several days of exposure in the camera were
required and the earliest results were very
crude.
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1800 on … very condensed
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Niépce's associate Louis Daguerre went on to
develop the daguerreotype process, the first
publicly announced photographic process, which
required only minutes of exposure in the camera
and produced clear, finely detailed results.
It was commercially introduced in 1839, a date
generally accepted as the birth year of practical
photography.
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The earliest surviving camera photograph, 1826
or 1827, known as View from the Window at Le
Gras
done by Niépce
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1800 on … very condensed
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Alexander Graham Bell was awarded the first
U.S. patent for the invention of the telephone in
1876.
Elisha Gray, 1876, designed a telephone using
a water microphone in Highland Park, Illinois.
Tivadar Puskás invented the telephone
switchboard exchange in 1876.
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1800 on … very condensed
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The world's first wireless telephone conversation
occurred in 1880, when Alexander Graham Bell
and Charles Sumner Tainter invented and
patented the photophone, a telephone that
conducted audio conversations wirelessly over
modulated light beams (narrow projections of
electromagnetic waves).
1896 Guglielmo Marconi develops the first
“wireless telegraph system”
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History of Computers - 19th
Century
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Joseph Marie Jacquard
First stored program metal cards
Did no computing
first computer
manufacturing
still in use today!
Charles Babbage - 17921871
Difference Engine
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c.1822
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huge calculator,
never finished
Analytical Engine
1833
could store numbers
 calculating “mill”
used punched metal
cards for instructions
 powered by steam!
 accurate to six
decimal places
 Inspiration for
Herman Hollerith for
1890 census
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Technical Overview -- AM
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Developments late 1800s and early 1900s
Titanic example: 1912
1920s – Radio Conferences, public / private, 1927 Radio
Act, PICON principle, FRC, 1934 Communication Act,
FCC, scarcity
Amplitude Modulation
Medium Wave – 520 to 1,610 kHz (10 kHz sep.)
Short Wave – 2.3 to 26.1 MHz (international)
kHz , MHz, GHz
Carrier wave / analog signal
Ground Waves / sky waves
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Technical Overview - FM
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1933 patent – 1937 first license
1960s / 1970s
Frequency Modulation
88.1 to 107.9 MHZ (non-commercial band)
Line of sight / ground waves (but…)
Analog
RDS / HD Radio (IBOC) / DAB
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Other ‘Radio’ Technology
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DARS -- XM and Sirius both operate in the 2.3-GHz S band
(part of the microwave band), from 2320 to 2345 MHz.
XM example -- Two satellites (nicknamed "Rock" and "Roll")
that redundantly downlink the signal to earth. The satellites
are in fixed geostationary orbit over the equator, and
longitudinally aligned approximately with Dallas and Atlanta,
at 115° West and 85° West. …..more on satellites 
Internet ‘Radio’ (bitstreams, streaming)
Cable ‘Radio’
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Terrestrial TV
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VHF and UHF
 NTSC system
 30 fps, 525 scan lines, 4:3 aspect ratio
 analog / interlaced
DTV / ATSC (2/17/09---June 2009)
 480, 720, 1080
 16:9 aspect ratio
 Digital / HDTV multichannel options
 Vs. digital cable
 COFDM and 8-VSB (U.S.)
 Progressive / interlaced
Basic Cable TV process (headend, services)
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DBS & satellites vs. fiber
optics
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DirecTV / DISH Network (digital / compressed)
Geosynchronous orbit
Parking slots
Transponders
Why fiber optic distribution instead?
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Uverse & FiOS / network fiber feeds
Satellite Internet service?
Mobile Internet service? (4G cell and Wi-Max)
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Internet
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Broadband
Wired and Wireless
What is the WWW?
Untapped technical potentials?
New Media form?
PR / extensions
 Dot com bust
 Facebook example
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Other communication terms
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Compression (MPEG)
VOD / Near VOD
Bluetooth & ZigBee & NFC / RFID
Wi-Fi vs. Wi-Max
HD DVD vs. Blu-ray
DVR
CODEC
More…
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Other terms…
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Uplink / downlink
GPS
Hotspot
Killer app
LEO
MMDS (wireless cable)
SMATV (private cable)
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So what about digital media?
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How are digital technologies changing everything?
Digital Measurements
 Processing Power
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Storage
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Larger data files, smaller storage space
Bandwidth
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How many operations per second
Original Intel chip in 1971: 2,300 transistors
Intel’s high-end today: 1.7 billion transistors
Speed of data transfer
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New Media Applications
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Staff at TV station doing news (options)
Web sites – newspaper and video
Interactive News Story
Entertainment Content (YouTube etc.)
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Interactive?
Citizen ‘Journalists’
Data sharing / Big Data
Nonlinear media
Mobile Media
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Simplify…
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Sending electronic signals (routing,
amplifying)
Analog, now mostly digital
How & where does the signal travel?
Encoding and decoding information
Technical standards / protocols to make a
system work
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