NTSC color television standard

E15990

analog television standard broadcast television standard color television system

The NTSC color television standard is an analog broadcast system developed in the United States that defined how color video signals were encoded and transmitted for decades of North American television.

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All labels observed (14)

Label	Occurrences
NTSC	327
NTSC-J	2
National Television System Committee	2
NTSC (Timex variants)	1
NTSC System M	1
NTSC analog television standard	1
NTSC color encoding	1
NTSC color television standard canonical	1
NTSC or PAL (variant-dependent)	1
NTSC regions	1
NTSC television standard	1
NTSC video standard	1
NTSC-M	1
NTSC-U	1

How this entity was disambiguated

This entity first appeared as the object of triple T136572 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: NTSC color television standard
Context triple: [RCA, contributedToStandard, NTSC color television standard]

A. Ampex
Ampex is an American electronics company renowned for pioneering professional audio and video tape recording technology.
B. RCA
RCA (Radio Corporation of America) was a major American electronics and communications company that played a pivotal role in the development and commercialization of radio and television technology in the 20th century.
C. Radio Corporation of America
Radio Corporation of America was a major American electronics and communications conglomerate best known for pioneering radio and television technology and broadcasting throughout the 20th century.
D. SMPTE ST 2059
SMPTE ST 2059 is a professional media industry standard that defines how to use IEEE 1588 Precision Time Protocol to synchronize clocks and signals across IP-based audio, video, and broadcast systems.
E. CBS
CBS is a major American broadcast television network known for airing a wide range of popular news, sports, and entertainment programming nationwide.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: NTSC color television standard
Target entity description: The NTSC color television standard is an analog broadcast system developed in the United States that defined how color video signals were encoded and transmitted for decades of North American television.

A. Ampex
Ampex is an American electronics company renowned for pioneering professional audio and video tape recording technology.
B. RCA
RCA (Radio Corporation of America) was a major American electronics and communications company that played a pivotal role in the development and commercialization of radio and television technology in the 20th century.
C. Radio Corporation of America
Radio Corporation of America was a major American electronics and communications conglomerate best known for pioneering radio and television technology and broadcasting throughout the 20th century.
D. SMPTE ST 2059
SMPTE ST 2059 is a professional media industry standard that defines how to use IEEE 1588 Precision Time Protocol to synchronize clocks and signals across IP-based audio, video, and broadcast systems.
E. CBS
CBS is a major American broadcast television network known for airing a wide range of popular news, sports, and entertainment programming nationwide.
F. None of above. chosen

Statements (51)

Predicate	Object
instanceOf	analog television standard ⓘ broadcast television standard ⓘ color television system ⓘ
alsoKnownAs	NTSC ⓘ linked to: NTSC color television standard NTSC-M ⓘ linked to: NTSC color television standard
approvedBy	Federal Communications Commission ⓘ
aspectRatio	4:3 ⓘ
audioCarrierOffset	4.5 MHz above video carrier ⓘ
audioModulation	frequency modulation ⓘ
chrominanceBandwidth	approximately 1.5 MHz ⓘ
colorBurstCycles	8 to 10 cycles per line ⓘ
colorEncoding	YIQ ⓘ
colorEncodingMethod	quadrature amplitude modulation of chrominance subcarrier ⓘ
colorSubcarrierFrequency	3.579545 MHz ⓘ
colorSubcarrierPhaseReference	color burst ⓘ
comparedWith	PAL color television standard ⓘ SECAM color television standard ⓘ
compatibleWith	monochrome NTSC television receivers ⓘ
countryOfOrigin	United States ⓘ linked to: United States of America
developedBy	National Television System Committee ⓘ linked to: NTSC color television standard
eraOfDominance	mid-20th century to early 21st century ⓘ
fieldRate	59.94 fields per second ⓘ
frameRate	29.97 frames per second ⓘ
horizontalLineFrequency	15.734 kHz ⓘ
inception	1953 ⓘ
introducedColorCompatibility	backward compatible with black-and-white NTSC ⓘ
linesPerFrame	525 ⓘ
lineStandard	System M ⓘ
luminanceBandwidth	approximately 4.2 MHz ⓘ
originalFrameRate	30 frames per second ⓘ
regionUsed	Canada ⓘ Japan ⓘ Mexico ⓘ Philippines ⓘ South Korea ⓘ Taiwan ⓘ linked to: Formosa United States ⓘ linked to: United States of America parts of Central America ⓘ parts of South America ⓘ parts of the Caribbean ⓘ
scanType	interlaced ⓘ
supersededBy	ATSC digital television standard ⓘ DVB digital television standard ⓘ ISDB digital television standard ⓘ
transmissionType	analog ⓘ
usedFor	analog cable television distribution ⓘ over-the-air television broadcasting ⓘ
usesColorDifferenceSignals	yes ⓘ
verticalFieldFrequency	59.94 Hz ⓘ
videoChannelBandwidth	6 MHz ⓘ
videoModulation	vestigial sideband amplitude modulation ⓘ

How these facts were elicited