Compressed Display Data Transmission With Error-Resilient Coding
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Solution Overview
Problem
The increased power consumption of display interfaces due to higher display resolutions shortens battery life in portable devices, necessitating a reduction in power consumption while maintaining error robustness during display data transmission.
Innovation Solution
A data processing apparatus and method that employs compression with error-resilient coding tools and decompression with error detection and concealment capabilities, specifically using compression-unit interleaving, data partitioning, and error correction codes to transmit compressed display data over standardized display interfaces like DSI and eDP, reducing power consumption and mitigating error propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If display resolution is increased to achieve higher display quality, then display quality is improved, but power consumption of display interface increases
Solution Approach 1:
The display data is divided into multiple compression units, each independently compressible and transmittable. This segmentation allows for selective transmission of only necessary data portions, reducing overall power consumption while maintaining display quality through efficient data compression and error isolation.
Solution Approach 2:
The patent applies compression parameters and error-resilient coding tools to transform the display data into a more efficient format. By changing the data representation parameters through compression algorithms, the data rate is reduced, thereby lowering power consumption while preserving the essential visual quality.
2Use of energy by moving object
If data compression is applied to reduce power consumption, then power consumption is reduced, but error robustness deteriorates
Solution Approach 1:
Error detection and correction mechanisms are pre-integrated into the compression process. By performing preliminary error protection actions during compression, the system maintains error robustness without requiring additional power-consuming retransmissions or complex error handling during decompression.
Solution Approach 2:
The patent incorporates error-resilient coding tools and redundancy mechanisms beforehand in the compression stage. This beforehand cushioning protects against potential transmission errors without affecting the power efficiency gains from compression, as the protective measures are built into the compressed data structure itself.
3Reliability
If compression units are used to isolate errors, then error propagation is reduced, but device complexity increases
Solution Approach 1:
Display data is organized into discrete compression units with defined boundaries and independent processing capabilities. This segmentation isolates errors to specific units, preventing propagation across the entire data stream, while the modular structure keeps implementation complexity manageable through standardized unit processing.
Solution Approach 2:
Each compression unit is processed and protected with locally optimized error resilience measures. By applying error isolation techniques at the local unit level rather than globally, the system achieves effective error containment with minimal additional complexity, as each unit can be processed independently using the same standardized approach.
Data Source
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AI summary
A data processing apparatus has a compressor and an output interface. The compressor performs compression upon an input display data to generate a compressed display data, wherein an error-resilient coding tool is involved in the compression. The output interface packs an output display data derived from the compressed display data into an output bitstream, and outputs the output bitstream via a display interface, wherein the display interface is one of a display serial interface (DSI) standardized by a Mobile Industry Processor Interface (MIPI) and an embedded display port (eDP) standardized by a Video Electronics Standards Association (VESA).