NTSC color television standard
E15990
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.
All labels observed (10)
| Label | Occurrences |
|---|---|
| NTSC | 296 |
| National Television System Committee | 2 |
| NTSC System M | 1 |
| NTSC analog television standard | 1 |
| NTSC color encoding | 1 |
| NTSC color television standard canonical | 1 |
| NTSC regions | 1 |
| NTSC-J | 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 color television standard
ⓘ
surface form:
NTSC
NTSC color television standard ⓘ
surface form:
NTSC-M
|
| 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 of America
ⓘ
surface form:
United States
|
| developedBy |
NTSC color television standard
self-linksurface differs
ⓘ
surface form:
National Television System Committee
|
| 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 ⓘ Formosa ⓘ
surface form:
Taiwan
United States of America ⓘ
surface form:
United States
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
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: NTSC color television standard Description of subject: 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.
Referenced by (306)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
NTSC
this entity surface form:
NTSC
this entity surface form:
NTSC
this entity surface form:
NTSC
this entity surface form:
NTSC
subject surface form:
Las Vegas
this entity surface form:
NTSC