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History of Television Standards
1. The National Television System Committee (NTSC) was established in 1940 by the FCC.
2. By May 1941, the FCC declared 525-line 4:3 aspect ratio 30 frame per second NTSC television
would be one of the standards.
3. Only about 7000 televisions were in use around that time, mainly in the New York area.
4. In 1953, RCA's dot-sequential system paved the way for compatible colour.
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High Definition - A New Standard
1. The Advanced Television Systems Committee (ATSC) was established
in 1982 to develop standards for digital television in the United
States - also adopted by Canada, Mexico, South Korea, and others.
2. The ATSC high definition television standard results in wide screen
(16:9) high resolution images, up to 1920×1080 pixels in size.
This is more than six times the display resolution of the earlier standard.
3. The ATSC digital television format replaces the analog NTSC television system
on February 17, 2009 in the United States,
and August 31, 2011 in Canada.
HD Standards Worldwide
1. ATSC is not the only HD standard.
2. Digital Video Broadcasting – Terrestrial (DVB/T) is the European-based standard for the broadcast transmission of digital terrestrial television.
3. Integrated Services Digital Broadcasting (ISDB) is the Japanese
standard for digital television and digital radio.
4. Digital Terrestrial Television (DMB-T/H or DTMB) is the standard in the People's Republic of China
covering both fixed
and mobile terminals.
See the map below. Not all countries have accepted a standard yet.
This picture will be sure to change.
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