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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 In the U.S., the analog NTSC standard was superseded by the digital TV standard in 2009 (see digital TV transition and DTV).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 NASC was abolished in 1973, reestablished in 1989 as the National Space Council, then abolished again in 1993, with its functions absorbed into the NSTC.
In 2008, more than 9,000 employees attended the NSTC Unescorted Course and 4,500 attended other NSTC awareness and job-specific training.
This report will provide an overview of the history of science and technology advice to the President, and provide an overview and discuss issues and options for Congress regarding OSTP's Director, OSTP management and operations, PCAST, and NSTC. The report also discusses actions taken by the Obama Administration regarding OSTP.
Two banners in the NSTC canteen read 'Compete against the world to become champions' and 'Expect the most from yourself.'(Taiwan Today photo)
More importantly, however, it could derail India's long-term ambitions to make itself a key player in the Afghan peace process through the patronage networks that the NSTC's eastern branch could create with time.
There are a few specific safety concerns for offshore operations, covered in an NSTC offshore safety awareness course, which add another three to four hours to the basic NSTC requirements.
The NITRD Subcommittee is a body under the National Science and Technology Council (NSTC).
After the turn of 21st century, relations between both the countries have been growing stronger and stronger in multiple fields particularly the energy, security and the NSTC (North-South Transportation Corridor).7
Zoller was a partner in the establishment of Apax - Mutavim Investment Bank and in 1999 founded Ness Technologies (NSTC), where he was CEO until 2007.
Delfin is accused of receiving through his aide P150,000 in exchange for DOTr's action in favor of New Sunrise Transport Cooperative (NSTC).
In 2008, The National Science and Technology Council (NSTC) Subcommittee on Disaster Reduction put forth a list of grand challenges for disaster reduction.