ST 2084
E772521
ST 2084 is a SMPTE standard that defines the Perceptual Quantizer (PQ) transfer function used as the electro-optical transfer function for high dynamic range (HDR) video.
All labels observed (2)
| Label | Occurrences |
|---|---|
| ST 2084 canonical | 1 |
| ST 2084 PQ curve | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9030242 — 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: ST 2084 Context triple: [SMPTE ST 2084, standardNumber, ST 2084]
-
A.
ST 2022
ST 2022 is a family of SMPTE standards that define the transport of professional audio and video over IP networks, including compressed and uncompressed media streams.
-
B.
ST3
ST3 is a major Sound Transit expansion plan in the Seattle metropolitan area that funds and builds new light rail, bus rapid transit, and commuter rail projects over several decades.
-
C.
720 STG
720 STG is a U.S. Air Force special operations unit specializing in combat control, pararescue, and other special tactics missions in support of global operations.
-
D.
STW
STW is the National Rail station code for Strawberry Hill railway station in the London Borough of Richmond upon Thames, England.
-
E.
STG
STG is the National Rail station code for Stirling railway station in Stirling, Scotland.
- 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: ST 2084 Target entity description: ST 2084 is a SMPTE standard that defines the Perceptual Quantizer (PQ) transfer function used as the electro-optical transfer function for high dynamic range (HDR) video.
-
A.
ST 2022
ST 2022 is a family of SMPTE standards that define the transport of professional audio and video over IP networks, including compressed and uncompressed media streams.
-
B.
ST3
ST3 is a major Sound Transit expansion plan in the Seattle metropolitan area that funds and builds new light rail, bus rapid transit, and commuter rail projects over several decades.
-
C.
720 STG
720 STG is a U.S. Air Force special operations unit specializing in combat control, pararescue, and other special tactics missions in support of global operations.
-
D.
STW
STW is the National Rail station code for Strawberry Hill railway station in the London Borough of Richmond upon Thames, England.
-
E.
STG
STG is the National Rail station code for Stirling railway station in Stirling, Scotland.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
HDR video standard
ⓘ
SMPTE standard ⓘ |
| abbreviation | PQ ⓘ |
| appliesTo |
RGB component signals
ⓘ
luma component signals ⓘ |
| basedOn | human visual system perception ⓘ |
| category |
HDR EOTF
ⓘ
transfer function ⓘ |
| compatibleWith |
10-bit video signals
ⓘ
12-bit video signals ⓘ |
| contrastWith | relative gamma transfer functions ⓘ |
| coordinateSystem | absolute luminance ⓘ |
| defines |
PQ transfer function
ⓘ
Perceptual Quantizer transfer function ⓘ electro-optical transfer function for HDR video ⓘ |
| definesLuminanceRangeFrom | 0 cd/m² ⓘ |
| definesLuminanceRangeTo | 10000 cd/m² ⓘ |
| domain |
display technology
ⓘ
image encoding ⓘ video technology ⓘ |
| enables |
fine gradation in dark and bright regions
ⓘ
wide dynamic range representation ⓘ |
| fullName | SMPTE ST 2084 ⓘ |
| intendedFor |
consumer HDR displays
ⓘ
reference mastering displays ⓘ |
| mapsFrom | digital code values ⓘ |
| mapsTo | display luminance ⓘ |
| optimizationTarget |
efficient HDR signal coding
ⓘ
perceptual uniformity ⓘ |
| primaryGoal | match digital signal steps to human brightness perception ⓘ |
| relatedStandard |
ST 2086
ⓘ
ST 2094 ⓘ |
| replaces | gamma-based transfer functions for HDR use cases ⓘ |
| standardizedBy | Society of Motion Picture and Television Engineers ⓘ |
| supportsPeakLuminanceUpTo |
10000 cd/m²
ⓘ
10000 nits ⓘ |
| transferFunctionType | electro-optical transfer function ⓘ |
| usedFor |
HDR cinema mastering
ⓘ
HDR streaming video ⓘ HDR television ⓘ high dynamic range video ⓘ |
| usedIn |
4K HDR content
ⓘ
8K HDR content ⓘ Dolby Vision ⓘ HDR10 ⓘ HDR10+ ⓘ
linked to:
HDR10+
Hybrid Log-Gamma workflows with PQ displays ⓘ UHDTV 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: ST 2084 Description of subject: ST 2084 is a SMPTE standard that defines the Perceptual Quantizer (PQ) transfer function used as the electro-optical transfer function for high dynamic range (HDR) video.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: ST 2084