HDR Video Transmission Metadata for Display Compatibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing technologies face challenges in ensuring proper electrooptical conversion processing for transmission video data obtained using high dynamic range optoelectrical conversion characteristics, particularly in ensuring compatibility and accurate display control at the receiving end.
Innovation Solution
A transmission device and method that includes an optoelectrical converter for high dynamic range optoelectrical conversion, an encoding unit for generating a video stream, a transmitter for formatting the stream, and an information inserter that inserts meta information about the electrooptical conversion characteristic into a parameter set field, along with identification information for display compatibility and control, to facilitate proper processing at the receiving side.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If HDR optoelectrical conversion is applied to transmission video data, then display quality and dynamic range are improved, but compatibility with conventional reception apparatus and proper electrooptical conversion processing become problematic
Solution Approach 1:
The patent applies preliminary action by embedding metadata about the electrooptical conversion characteristic into the video stream before transmission. This allows receiving apparatus to pre-configure the proper conversion processing needed for HDR content, ensuring both improved display quality and compatibility with various reception devices. The metadata is inserted in advance so that the conversion characteristics are readily available when the video is received and processed.
2Reliability
If meta information about electrooptical conversion characteristic is inserted into the video stream, then proper conversion processing at receiving side is enabled, but device complexity and processing overhead increase
Solution Approach 1:
The patent utilizes parameter changes by representing the electrooptical conversion characteristic through standardized metadata parameters that can be easily parsed and applied. By converting the complex conversion characteristics into structured parameter format (such as transfer function parameters, peak brightness values, and reference levels), the system achieves reliable conversion processing while keeping the receiving apparatus complexity manageable through standardized parameter interpretation.
3Adaptability or versatility
If display brightness adjustment is allowed at receiving side, then adaptability to different display conditions is improved, but excessive brightness adjustment may occur causing eye fatigue or deviation from creator's intent
Solution Approach 1:
The patent implements feedback by embedding metadata that provides information about the original display conditions and conversion characteristics used by the content creator. This feedback mechanism allows receiving apparatus to adjust brightness adaptively while staying within the intended display range, preventing excessive adjustment that would cause eye fatigue or deviate from the creator's artistic intent. The metadata acts as a reference that guides appropriate brightness adaptation.
Data Source
AI summary
The present technology ensures that electrooptical conversion processing for transmission video data obtained using an HDR optoelectrical conversion characteristic is favorably carried out at a receiving side. The transmission video data is obtained by performing high dynamic range optoelectrical conversion on high dynamic range video data. A video stream is obtained by applying encoding processing to this transmission video data. A container in a predetermined format including this video stream is transmitted. Meta information indicating an electrooptical conversion characteristic corresponding to a high dynamic range optoelectrical conversion characteristic is inserted into a parameter set field in the video stream.