HDR Video Capability Negotiation for Cross-Device Communication
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Solution Overview
Problem
Communication devices with differing HDR capabilities face challenges in video interaction, leading to degraded display effects and resource inefficiencies when one device cannot decode HDR videos.
Innovation Solution
A communication method where devices exchange capability information to determine and adapt video transmission based on HDR support, using HDR or non-HDR videos as needed to maintain optimal display quality and reduce resource consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If HDR video is transmitted between communication devices, then the display effect of video pictures is improved, but the video cannot be correctly decoded by devices that do not support HDR, causing abnormal colors and degraded display effect
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the video format parameter (HDR or non-HDR) based on the capability parameters of the communicating devices. The first communication device determines whether to transmit HDR or non-HDR video by comparing its own HDR capability with the received capability information of the second device, thereby changing the video format parameter to ensure compatibility while optimizing display effect.
2Illumination intensity
If HDR video is used for interaction between communication devices, then the video quality is enhanced, but more resources are consumed compared to non-HDR video
Solution Approach 1:
The patent applies partial action by selectively using HDR video only when both communicating devices support HDR capability. When the second device indicates it does not support HDR, the system partially uses non-HDR video instead, thereby avoiding unnecessary resource consumption while still providing high quality video interaction when conditions permit.
3Adaptability or versatility
If capability negotiation for HDR support is performed between communication devices, then compatible video formats can be selected, but additional signaling overhead is required
Solution Approach 1:
The patent applies preliminary action by performing capability negotiation during the call establishment phase, specifically by including capability indication information in the INVITE request or UPDATE message. This preliminary exchange of capability information allows both devices to determine the appropriate video format before actual video transmission begins, avoiding the need for continuous capability checking during the video session.
Data Source
AI summary
This application provides a communication method, apparatus, and system. A method performed by a first communication device includes: sending first capability information to a second communication device, where the first capability information indicates that a video that can be sent and/or received by the first communication device is a high dynamic range (HDR) video or a non-HDR video; receiving first indication information from the second communication device, where the first indication information indicates that a video to be sent between the second communication device and the first communication device is an HDR video or a non-HDR video; and sending and/or receiving a video to/from the second communication device and/or receives a video from the second communication device based on the first indication information. Based on the foregoing solution, video interaction between different communication devices can be better performed.