Reconfigurable Pixel Mapping Matrix for HDMI Video Format Conversion
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Solution Overview
Problem
Current technologies lack a common, easily implementable solution for mapping different video formats, such as RGB and YPbPr/YCbCr, into usable sequences, limiting compatibility and requiring multiple dedicated systems for various formats.
Innovation Solution
An n×n video data pixel mapping matrix, implemented as an integrated circuit, allows any input format to be mapped to any output format, enabling flexible connectivity and conversion between existing and future formats, including older and newer formats.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple dedicated systems are used for different video formats, then format compatibility is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal video format converter that can handle multiple video formats (RGB, YPbPr, YCbCr, and future formats) through a single integrated circuit. The n×n mapping matrix provides a unified architecture that performs format conversion without requiring separate dedicated systems for each format pair, thus achieving multi-functionality while reducing overall system complexity.
Solution Approach 2:
The mapping matrix is designed to be dynamically reconfigurable through control signals that can establish different mapping patterns between input and output formats. This dynamic capability allows the same hardware structure to adapt to various conversion requirements (e.g., RGB to YPbPr, YCbCr to RGB, or future formats) without physical reconfiguration, resolving the contradiction between versatility and complexity.
2Manufacturing precision
If format-specific conversion methods are used, then conversion accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The patent segments the video signal into individual pixel components (e.g., R, G, B channels) and processes each component through the mapping matrix independently. This segmentation allows precise control over each pixel's color values during conversion while maintaining a simple unified interface for the entire signal, thus achieving both high conversion accuracy and ease of operation.
Solution Approach 2:
The mapping matrix acts as an intermediary structure that receives input video signals in any format and transforms them into the desired output format through controlled data routing. This intermediary approach provides a standardized interface that simplifies operation while maintaining the precision needed for accurate color space conversion through its structured mapping capability.
Data Source
AI summary
High-Definition Multimedia Interface Specification, Version 1.2, supports multiple video formats. Currently the HDMI sources and sinks support multiple formats through reconfiguration of the system. The present invention describes the use of a configurable ‘n’בn’ data pixel mapping matrix for video format conversion. This mapping matrix allows the mapping of any existing video format to any other existing or future video format and allows flexibility of connectivity to any transmitter or receiver. Accordingly a more user friendly implementation that provides greater flexibility for development and use of new formats in video applications is shown.