SECAM
E772517
SECAM is an analog color television broadcasting standard developed in France and used historically in parts of Europe, Africa, and the Middle East.
All labels observed (4)
How this entity was disambiguated
This entity first appeared as the object of triple T9030223 — 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: SECAM Context triple: [SMPTE color bars, associatedWithStandard, SECAM]
-
A.
CCIR System B (625-line PAL/SECAM TV standard)
CCIR System B is an analog television broadcasting standard that defines a 625-line, 50 Hz VHF transmission system widely used in conjunction with PAL and SECAM color encoding across many countries.
-
B.
NTSC color television standard
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.
-
C.
MPEG-2
MPEG-2 is a widely used digital video and audio compression standard commonly employed for DVDs, digital television broadcasting, and some online video formats.
-
D.
SMPTE 421M
SMPTE 421M is the formal SMPTE standard that defines the VC-1 video compression format used for high-definition video encoding and distribution.
-
E.
H.261
H.261 is an early international video compression standard developed by the ITU-T for real-time video conferencing over ISDN and similar networks.
- 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: SECAM Target entity description: SECAM is an analog color television broadcasting standard developed in France and used historically in parts of Europe, Africa, and the Middle East.
-
A.
CCIR System B (625-line PAL/SECAM TV standard)
CCIR System B is an analog television broadcasting standard that defines a 625-line, 50 Hz VHF transmission system widely used in conjunction with PAL and SECAM color encoding across many countries.
-
B.
NTSC color television standard
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.
-
C.
MPEG-2
MPEG-2 is a widely used digital video and audio compression standard commonly employed for DVDs, digital television broadcasting, and some online video formats.
-
D.
SMPTE 421M
SMPTE 421M is the formal SMPTE standard that defines the VC-1 video compression format used for high-definition video encoding and distribution.
-
E.
H.261
H.261 is an early international video compression standard developed by the ITU-T for real-time video conferencing over ISDN and similar networks.
- F. None of above. chosen
Statements (62)
| Predicate | Object |
|---|---|
| instanceOf |
analog color television broadcasting standard
ⓘ
television standard ⓘ |
| advantage | reduced hue errors compared to NTSC ⓘ |
| audioSubcarrierModulation | FM ⓘ |
| colorDifferenceSignals | Dr and Db ⓘ |
| colorEncodingMethod | sequential transmission of color difference signals with line-by-line alternation ⓘ |
| colorEncodingSystem | frequency modulation of color subcarrier ⓘ |
| colorSubcarrierModulation | FM ⓘ |
| compatibility | backward compatible with monochrome 625-line receivers ⓘ |
| concurrentStandard |
NTSC
ⓘ
linked to:
NTSC color television standard
PAL ⓘ |
| countryOfOrigin | France ⓘ |
| developer |
Compagnie Française de Télévision
ⓘ
Henri de France ⓘ |
| disadvantage |
less convenient for post-production than PAL
ⓘ
more complex studio equipment ⓘ |
| fieldRate | 50 Hz ⓘ |
| firstPublicDemonstration | 1961 ⓘ |
| firstRegularBroadcasts | 1967 ⓘ |
| firstRegularBroadcastsCountry | France ⓘ |
| fullName | Séquentiel couleur à mémoire ⓘ |
| introduced | 1960s ⓘ |
| lineStandard | 625-line system ⓘ |
| memoryRequirement | line delay for color decoding ⓘ |
| predecessor | monochrome 625-line television ⓘ |
| primaryUsePeriod | late 1960s to early 2000s ⓘ |
| regionOfUse |
Eastern Europe
ⓘ
France ⓘ Middle East ⓘ Soviet Union ⓘ parts of Africa ⓘ parts of Western Europe ⓘ |
| replacedBy | digital terrestrial television ⓘ |
| signalBandwidth | approximately 6 to 8 MHz depending on system ⓘ |
| signalFormat | interlaced ⓘ |
| status | largely obsolete ⓘ |
| successor |
DVB-C
ⓘ
DVB-S ⓘ DVB-T ⓘ digital television ⓘ |
| usedInCountry |
Algeria
ⓘ
Bulgaria ⓘ Czechoslovakia ⓘ Egypt ⓘ France ⓘ Greece ⓘ Iran ⓘ Iraq ⓘ Lebanon ⓘ Morocco ⓘ Poland ⓘ Romania ⓘ Russia ⓘ Soviet Union ⓘ Syria ⓘ Tunisia ⓘ |
| usedWithBroadcastStandard |
CCIR System D
ⓘ
CCIR System H ⓘ CCIR System K ⓘ CCIR System K′ ⓘ
linked to:
CCIR System K
CCIR System L ⓘ |
| videoStandardFamily | 625/50 analog television systems ⓘ |
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: SECAM Description of subject: SECAM is an analog color television broadcasting standard developed in France and used historically in parts of Europe, Africa, and the Middle East.
Referenced by (16)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
CCIR System B (625-line PAL/SECAM TV standard)
subject linked to:
CCIR System B (625-line PAL/SECAM TV standard)
linked to: SECAM
linked to: SECAM
linked to: SECAM