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1
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2
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- TV development goes back to a spinning disk with holes invented by Paul
Nipkow in 1884!
- Engineers John Baird and Charles Jenkins created entire mechanical
television systems for transmitting and receiving images in the 1920’s.
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3
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- Philo T. Farnsworth and Vladimir Zworykin made great advances in
electronic TV.
- By 1939 Zworykin and RCA were ready for regular programming and the New
York’s World Fair was the first show they broadcast.
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4
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- RCA developed a color TV system that was backwards compatible with the
monochrome (Black and White) system.
- The National Television Standards Committee (NTSC) adopted it in 1953.
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5
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- WUFT-TV is broadcasting a full power digital signal right now!
- The WUFT-DT signal consists of 2 Standard Definition channels and one
High Definition channel.
- Some full power television stations will stop broadcasting the analog
(NTSC) signal on February 17th 2009 and transition to digital
broadcasting while other stations may take advantage of the extension
till June 12th 2009 to continue broadcasting an analog
signal.
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6
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- The U. S. Government is offering a $40 coupon program to help you
purchase a digital set top box
- For more information on the digital television transition , go to https://www.dtv2009.gov/
- If you receive your television
programming with an antenna,
you will need a TV set that has a digital TV tuner or purchase a
Digital-to-Analog set top box to watch digital TV on your current set.
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7
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- You can transmit more data consistently over distance and send different
types of data.
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8
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- Using a data compression system
called MPEG-2, engineers have found a way to squeeze more data into the
6 Mhz TV channel bandwidth.
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9
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- The digital TV data stream is an opportunity for Computer Scientists and
Engineers to reshape how we think about television and to improve our
viewing experience.
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10
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- Thanks to Robert Cringely’s Crash Course on DTV http://www.pbs.org/opb/crashcourse/
- Also, the Federal Communications Commission http://www.dtv.gov/
- Images from http://www.myfreehdtv.org/ and http://www.earlytelevision.org/index.html
- For more information : http://www.WUFT.org
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Notes
