HDMI Video Interface Controller HDR Transmission Format
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Solution Overview
Problem
Existing HDMI interface technologies face inefficiencies when transmitting video data with auxiliary information, such as high dynamic range (HDR) data, as they often require processing and synchronization challenges due to the integration of HDR information with video frames, leading to incomplete processing of auxiliary data before video data.
Innovation Solution
An electronic apparatus with a video processor and video interface controller that transmits first uncompressed video data and HDR information in a specific transmission format with a non-blanking region, allowing for efficient transmission and reception of HDR information by adjusting the blanking regions in the HDMI transmission format, enabling seamless integration and processing of HDR data with video frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If HDR information is integrated with video frames in conventional HDMI format, then video data can be transmitted, but processing and synchronization become challenging due to incomplete processing of auxiliary data before video data
Solution Approach 1:
The patent segments the transmission data into distinct components: video data and HDR auxiliary data are separated into different data structures with clear delimiters. The video data is transmitted in one format while HDR information is transmitted as separate auxiliary data with synchronization markers, allowing independent processing of each component without interference.
Solution Approach 2:
The patent implements preliminary synchronization by placing synchronization markers and metadata before the actual video and HDR data streams. This allows the receiving device to prepare processing buffers and synchronize clocks in advance, ensuring that auxiliary data is fully processed before video data processing begins, eliminating synchronization challenges.
2Adaptability or versatility
If conventional HDMI format is used for transmitting video data with auxiliary information, then compatibility is maintained, but transmission efficiency decreases due to processing bottlenecks
Solution Approach 1:
The patent creates a multi-functional transmission format that can operate in multiple modes: it maintains compatibility with conventional HDMI formats for basic video transmission, while simultaneously supporting extended functionality for HDR and auxiliary data transmission. The format includes optional fields and alternative data structures that can be activated based on device capabilities, allowing the same interface to serve both legacy and advanced requirements.
3Reliability
If auxiliary data is transmitted before video data, then synchronization is improved, but processing time increases due to incomplete processing
Solution Approach 1:
The patent introduces synchronization markers and timing metadata as intermediary elements between the auxiliary data and video data streams. These markers act as mediators that carry timing information and processing status, allowing the receiving device to overlap processing operations and prepare for upcoming data arrivals without waiting for complete sequential processing, thus reducing overall processing time while maintaining synchronization accuracy.
Data Source
AI summary
One embodiment relates to an electronic apparatus including a video processor and a video interface controller. The video processor transmits first uncompressed video data and high dynamic range (HDR) information in a first transmission format. The HDR information is associated with each video frame of the first uncompressed video data. The first transmission format includes a first non-blanking region in each video frame. The video interface controller receives the first uncompressed video data and the HDR information from the video processor in the first transmission format. The video interface controller transmits second uncompressed video data and the HDR information to an external device in a second transmission format. The second uncompressed video data corresponds to the first uncompressed video data. The second transmission format includes a second non-blanking region in each video frame, and the first non-blanking region is larger than the second non-blanking region.