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(National TV Standards Committee) The first television standard for the U.S., which was also adopted by Canada, Japan, South Korea and several Central and South American countries. In the U.S., the analog NTSC standard was superseded by the digital TV standard in 2009 (see digital TV transition and DTV).

From Monochrome to Color
NTSC commercial broadcasting began in the U.S. for black and white TVs in the summer of 1941. A subcarrier frequency was later developed to transmit color alongside the monochrome signal, and color TV debuted on January 1, 1954 (see composite video). Before electronic TV became a standard, prototype electromechanical systems produced the first, crude video images (see video/TV history).

NTSC Specifications
Administered by the FCC, NTSC broadcast 60 half frames per second, which is known as 60 "fields" per second in TV jargon (59.94 fields per second to be exact). NTSC used 525 lines of interlaced resolution (two 262.5-line half frames). The last 21 lines in each half frame were the "vertical blanking interval" (VBI), which gave the electron gun in the CRT time to reposition itself from the bottom of the last frame to the top of the next. See interlace and raster scan.

The digital video (DV) camcorder format that is equivalent to NTSC is 720x480 pixels (see DV). The digital TV equivalent is 704x480 pixels (see DTV).

NTSC was encoded in the YUV color space, which provides a mathematical equivalent of red, green and blue. It also includes an audio FM frequency and an MTS signal for stereo. See NTSC DVD, YUV, YIQ, 4fSC, vertical blanking interval, aspect ratio, DTV, PAL and SECAM.

This TV set picked up the first NTSC TV signal, which was broadcast in the U.S. in 1941. The signal was monochrome. In 1954, the new NTSC standard added color using a composite video signal. (Image courtesy of www.TVhistory.TV)

Inside a TV?
Hard to imagine, but this rotating disc was the heart of the first TV camera and receiver, which predated the all-electronic systems such as NTSC. For an overview, see video/TV history. (Image courtesy of www.TVhistory.TV)
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References in periodicals archive ?
The NTC noted that existing analog TV stations were using low VHF band channels, which were susceptible to 'local electrical interference, particularly in highly urbanized cities.'
It has a gaming simulator with 1000 games, 6 cm (2.4") QVGA display, dual memory card slot, analog TV, built-in Yamaha amplifier, universal 3.5 mm audio jack, music player and audio player besides short range wireless connectivity.
How am I going to eat my meals?" That's a question nearly 11.5 million American households--or a little more than 10 percent of the "over the air" TV-viewing public (defined as those who only have analog TVs and who don't subscribe to either cable or satellite service)--may be asking next February when the nation's broadcasters switch from analog to digital transmission, causing the picture to go dead on analog sets unless they purchase a converter box.
But in February 2009, we face the first forced technological revolution that will actually render a whole category of devices--the analog TV set--utterly useless.
"Interference to analog TV services typically appears as obtrusive patterns on the picture, while interference to digital TV services has much more radical effects, resulting in a complete blank screen.
The ATI TV Wonder 600 PCI and PCI Express add-in TV tuners feature ClearQAM, powerful PVR based on ATI Theater 600 Pro video decoder, ATI Theater ATSC reception technology and, analog TV reception.
With a profusion of VHS tapes, an old analog TV system and conventional projectors, the Edina (Minn.) Public School District was ready for a digital makeover.
There are over 300 million analog TV subscribers in Mainland China.
The survey results reinforce CEA's own market research projection that total digital TV (DTV) unit shipments will surpass analog TV sales for the first time in 2005.
When asked about what level of quality is necessary for the camera and for video content streaming/downloading, 62.8% and 81.0% said "quality higher than that of current analog TV" for the camera and for video content, respectively.
government plans to start turning off analog TV in 2008, completing the switch to digital by 2012.

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