Display Data Interface Packets for Eye-Gaze Compression Headers
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Solution Overview
Problem
The increase in size of header packets due to individually assigned compression delimiters for image data regions leads to a higher transfer load, reducing data transfer performance in personal immersion display apparatuses.
Innovation Solution
A data interface device and method that divides compressed and/or non-compressed image data into data groups, subgroups, and sub-blocks based on user eye-gaze focus, configuring transfer data packets with a header packet that includes first and second compression delimiter parameters to optimize header size and improve transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If compression delimiters are individually assigned to each specific region and transferred to header packets through simple arrangement, then compression information completeness is improved, but header packet size increases
Solution Approach 1:
The image data is divided into multiple regions (first region, second region, third region) with different compression rates, and compression delimiters are selectively arranged only in regions where compression changes occur. This segmentation approach avoids redundant delimiter placement in uniform compression regions, reducing header packet size while maintaining complete compression information.
Solution Approach 2:
Different compression rates are applied to different regions based on local quality requirements (e.g., foveal region vs. peripheral region). Compression delimiters are strategically placed only where compression rate changes occur, rather than uniformly across all regions. This local quality approach ensures compression information is complete where needed while minimizing header overhead.
2Loss of information
If header packet size increases, then compression information detail is improved, but transfer load increases and transfer performance reduces
Solution Approach 1:
Compression delimiter information is extracted and placed only in the header packet when necessary (i.e., when compression rate changes occur between regions). By taking out only the essential compression information needed for decoder operation and placing it selectively in the header, the patent reduces unnecessary data transmission while maintaining complete compression information for accurate decoding.
3Manufacturing precision
If compression delimiters are arranged for all regions, then compression control precision is improved, but device complexity increases
Solution Approach 1:
The patent implements a dynamic packet configuration approach where the presence and arrangement of compression delimiters in header packets adapt based on the actual compression rate distribution across image regions. When compression rates are uniform, delimiters are omitted; when compression rates vary, delimiters are selectively placed. This dynamic approach maintains precise compression control while reducing packet configuration complexity compared to static universal delimiter placement.
Data Source
AI summary
A data interface device of a display apparatus includes a packet configuration circuit configured to divide compressed and/or non-compressed image data into a plurality of data groups, divide each of the plurality of data groups into a plurality of subgroups, divide each of the plurality of subgroups into a plurality of sub-blocks, and configure a transfer data packet including a header packet and an image data packet by units of one data group, based on an eye-gaze focus of a user. The header packet includes a first compression delimiter parameter representing a representative compression case distribution of the one data group and a second compression delimiter parameter representing detailed compression case distributions of subgroups configuring the one data group.