WHAT IS NTSC

Short for “National Television System Committee”. The NTSC is responsible for setting television and video standards used in North America, most of South America and some other countries. The NTSC standard for television defines a composite video signal with a refresh rate of 30 interlaced frames per second. Each frame contains 525 lines and can contain 16 million different colors.
The term NTSC may also be used to describe any video, including digital video, formatted for playback on a NTSC TV. This generally includes any Standard Definition (SD) video with a vertical Resolution of up to 480 Pixels and a horizontal Resolution no greater than 720, which also has a Framerate of 29.97fps. NTSC is sometimes referred to as 525/60, in reference to the total number of lines (including lines not in the Active Area) and approximate Fieldrate. Digital formats include only 480 of NTSC's 486 visible Scanlines due to the need to guarantee mod16 Resolution, meaning its divisible evenly by 16.
The NTSC standard is incompatible with most computer video standards, which generally use RGB video signals. However, you can insert special video adapters into your computer that convert NTSC signals into computer video signals and vice versa.

N T S C National Television System Committee
Lines/Field	525/60
Horizontal Frequency	15.734 kHz
Vertical Frequency	60 Hz
Color Subcarrier Frequency	3.579545 MHz
Video Bandwidth	4.2 MHz
Sound Carrier	4.5 MHz

The first black-and-white NTSC standard for broadcast was developed in 1941 and had no provision for color transmissions. Civilian development of commercial television was halted with the entry of the United States into the war. In 1953 a second standard was issued, which allowed color broadcasting to be compatible with the existing stock of black-and-white receivers, while maintaining the broadcast channel bandwidth already in use.
NTSC was the first widely adopted broadcast color system. After over a half-century of use, the vast majority of over-the-air NTSC transmissions will be replaced with ATSC.

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DIFFERENCE BETWEEN NTSC,PAL,SECAM

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THE ABOVE FORMATS ARE USED BY DIFFERENT COUNTRIES.

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Most people using the pal video, U.S uses NTSC VIDEO to broadcast the video.france uses the SECAM video format.

abbreviations

NTSC--------(National Television System Committee) 

PAL---------- (Phase Alternating Line) 

SECAM-----(SEQUENTIAL COLOR WITH MEMORY)

Each standard is incompatible with the other two. Also, the equipment that demodulates the signal must be formatted for that signal.

Generally NTSC is used in North America, most of the countries in South America and Japan. PAL is the format for the UK and most European countries except France and parts of Eastern Europe which use SECAM. For example, a recording made in the France could not be played on an American VCR.

If you view video tapes that are from outside of the United States, or send videos abroad, you must first convert the tape to or from the foreign television standard.

This table illustrates the differences between the video standards:

	NTSC M	PAL B,G,H	PAL I	PAL N	PAL M	SECAM B,G,H	SECAM D,K,K’,L
Lines/Fields	525/60	625/50	625/50	625/50	525/60	625/50	625/50
Horizontal Frequency	15.734 kHz	15.625 kHz	15.625 kHz	15.625 kHz	15.750 kHz	15.625 kHz	15.625 kHz
Vertical Frequency	60 Hz	50 Hz	50 Hz	50 Hz	60 Hz	50 Hz	50 Hz
Color Subcarrier Frequency	3.579545 MHz	4.43361875 MHz	4.43361875 MHz	3.582056 MHz	3.575611 MHz
Video Bandwidth	4.2 MHz	5.0 MHz	5.5 MHz	4.2 MHz	4.2 MHz	5.0 MHz	6.0 MHz
Sound Carrier	4.5 MHz	5.5 MHz	5.9996 MHz	4.5 MHz	4.5 MHz	5.5 MHz	6.5 MHz

Related Topics:

• What is NTSC?
• What are the PAL variants?
• What is PAL?
• What is Multisystem PAL support?
• How NTSC video standard works?

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difference between ntsc&pal

The difference is not the encoding of the video, but the means in which the video is transmitted.
PAL and NTSC are analog systems of transmission, which means that the growth of digital television around the globe will eventually render this comparison moot.

PAL (phase alternating line) video is the result of the European electrical grid, which is 50 hertz alternating current (Hz AC). Power circuits in North America are 60 Hz AC, which provides electricity at a higher frequency that is incompatible with PAL video. Because a new system needed to be designed, engineers tried to create a system that addressed deficiencies with the American video protocol. They called it National Television System Committee (NTSC).

The NTSC protocol calls for 525 scan lines (also called 480i), which is the number of pixel lines transmitted over a signal in standard definition. PAL signals read 625 scan lines (576i). Televisions read the signal and apply it to the number of pixel lines on their screen.
The lower scan-line number of NTSC leads to less color depth. The result is a less-than-true color broadcast, requiring tint control. This is why NTSC televisions are equipped with tint controllers and PAL are not.

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