HDR Regulatory Compliance & Guidelines 2 — Questions and Answers
Question 1: Which ITU-R recommendation defines the signal format for HDR and Wide Color Gamut television?
- ITU-R BT.709
- ITU-R BT.2020
- ITU-R BT.2100 (Correct answer)
- ITU-R BT.601
Correct answer: ITU-R BT.2100
ITU-R BT.2100 specifically defines image parameter values for HDR television, covering both PQ and HLG transfer functions.
Question 2: Under ATSC 3.0 guidelines, which metadata standard is mandatory for HDR content delivered via broadcast?
- SMPTE ST 2086 (Correct answer)
- SMPTE ST 2094
- CTA-861-G
- ETSI TS 103 433
Correct answer: SMPTE ST 2086
SMPTE ST 2086 defines mastering display color volume metadata that is required by ATSC 3.0 for HDR broadcast content.
Question 3: The CTA-861 standard governs HDR signaling primarily through which interface?
- SDI
- HDMI (Correct answer)
- DisplayPort
- Thunderbolt
Correct answer: HDMI
CTA-861 (formerly CEA-861) defines HDMI-specific signaling for HDR, including the HDR Static Metadata Descriptor used in HDMI InfoFrames.
Question 4: Which FCC proceeding formally authorized ATSC 3.0 voluntary deployment in the United States, enabling HDR broadcasting?
- MB Docket No. 16-142 (Correct answer)
- MB Docket No. 12-268
- ET Docket No. 05-56
- MB Docket No. 07-294
Correct answer: MB Docket No. 16-142
MB Docket No. 16-142 resulted in the FCC's 2017 Report and Order authorizing ATSC 3.0 as a voluntary next-generation broadcast standard, enabling HDR TV distribution.
Question 5: What is the maximum allowed MaxFALL (Maximum Frame Average Light Level) value specified for HDR10 consumer content delivery under common industry guidelines?
- 1,000 nits
- 4,000 nits
- 10,000 nits
- No defined maximum (Correct answer)
Correct answer: No defined maximum
HDR10 guidelines do not specify a maximum MaxFALL value; it is a measured informational value reported by the content creator rather than a compliance ceiling.
Question 6: Which SMPTE standard defines dynamic metadata for HDR, enabling scene-by-scene or frame-by-frame tone mapping instructions?
- SMPTE ST 2084
- SMPTE ST 2086
- SMPTE ST 2094 (Correct answer)
- SMPTE ST 428
Correct answer: SMPTE ST 2094
SMPTE ST 2094 is the suite of standards defining dynamic metadata for the mapping of HDR images, allowing tone mapping adjustments at the scene or frame level.
Question 7: Under the UHD Alliance's Mobile HDR Premium specification, what is the minimum peak luminance requirement for a display to earn certification?
- 200 nits
- 400 nits (Correct answer)
- 540 nits
- 1,000 nits
Correct answer: 400 nits
The UHD Alliance Mobile HDR Premium spec requires a minimum peak luminance of 400 nits for mobile displays to achieve certification.
HDR Regulatory Compliance & Guidelines 2
Which ITU-R recommendation defines the signal format for HDR and Wide Color Gamut television?