HDR Regulatory Compliance & Guidelines 3 — Questions and Answers
Question 1: According to SMPTE ST 2084 (PQ curve), what is the absolute peak luminance value the transfer function is anchored to?
- 1,000 cd/m²
- 4,000 cd/m²
- 10,000 cd/m² (Correct answer)
- 100,000 cd/m²
Correct answer: 10,000 cd/m²
SMPTE ST 2084 defines the Perceptual Quantizer (PQ) curve anchored to an absolute peak of 10,000 cd/m², representing the theoretical maximum for the standard.
Question 2: Hybrid Log-Gamma (HLG) was jointly developed by which two organizations?
- ITU and SMPTE
- BBC and NHK (Correct answer)
- Dolby and Samsung
- Netflix and Amazon
Correct answer: BBC and NHK
HLG was co-developed by BBC and NHK as a backwards-compatible HDR transfer function, standardized in ARIB STD-B67 and later adopted in ITU-R BT.2100.
Question 3: Which regulatory body in the US classifies and enforces electronic device emissions standards that HDR consumer displays must comply with?
- FCC (Part 15) (Correct answer)
- FDA
- NIST
- UL Standards
Correct answer: FCC (Part 15)
FCC Part 15 regulations govern unintentional radiators including HDR consumer displays, requiring testing for electromagnetic compatibility (EMC) compliance.
Question 4: Netflix's HDR content delivery specification requires mastering at a minimum peak luminance of:
- 600 nits
- 1,000 nits (Correct answer)
- 4,000 nits
- 10,000 nits
Correct answer: 1,000 nits
Netflix requires HDR content to be mastered at a minimum of 1,000 nits peak luminance to ensure consistent quality across the platform.
Question 5: The UHD Blu-ray specification mandates support for which HDR format as a baseline requirement for all players?
- Dolby Vision
- HDR10 (Correct answer)
- HLG
- HDR10+
Correct answer: HDR10
UHD Blu-ray mandates HDR10 as the baseline required HDR format; Dolby Vision and HDR10+ are optional supported formats.
Question 6: Under the HDMI 2.0 specification, which data structure carries HDR static metadata to compliant displays?
- AVI InfoFrame
- Audio InfoFrame
- HDR Static Metadata InfoFrame (VSI) (Correct answer)
- Dynamic HDR InfoFrame
Correct answer: HDR Static Metadata InfoFrame (VSI)
HDMI 2.0 uses the HDR Static Metadata InfoFrame to transmit mastering display color volume and content light level data from source to display.
Question 7: Which ISO/IEC standard governs the carriage of HDR metadata within HEVC (H.265) bitstreams?
- ISO/IEC 14496-10
- ISO/IEC 23008-2 (Correct answer)
- ISO/IEC 13818-2
- ISO/IEC 21000-10
Correct answer: ISO/IEC 23008-2
ISO/IEC 23008-2 (HEVC) includes SEI messages for mastering display color volume and content light level, enabling HDR metadata carriage in H.265 streams.
HDR Regulatory Compliance & Guidelines 3
According to SMPTE ST 2084 (PQ curve), what is the absolute peak luminance value the transfer function is anchored to?