Dual Signal Path LCD Data Compression Bypass
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Solution Overview
Problem
Liquid crystal display (LCD) devices face high power consumption due to unnecessary compression and decompression of complete color gamut data in certain operation modes, leading to inefficient energy usage.
Innovation Solution
A data compression system with dual signal paths, allowing image data to bypass compression and decompression processes in specific operation modes, such as color gamut reduction, partial area display, and scale-up modes, by using a first signal path for compression and storage, and a second signal path to directly transmit data to the display unit, reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If image data is compressed and decompressed through the compression circuit and de-compression circuit, then data transmission efficiency is improved, but power consumption increases unnecessarily in certain operation modes
Solution Approach 1:
The patent implements dynamic switching between two signal paths based on operation mode. The first signal path includes compression and de-compression circuits for normal operation, while the second signal path bypasses these circuits for power-saving modes. The system dynamically selects the appropriate path according to whether complete color gamut information is required, thereby optimizing the balance between data transmission efficiency and power consumption.
Solution Approach 2:
The patent segments the data transmission system into two distinct signal paths: a first signal path for compression-based transmission and a second signal path for direct transmission. This segmentation allows the system to choose the most efficient path for each operation mode, avoiding unnecessary compression operations when complete color gamut data is not required.
2Adaptability or versatility
If the compression circuit and de-compression circuit are always activated, then complete color gamut data can be processed, but power consumption increases when full color information is not needed
Solution Approach 1:
The system dynamically adapts its processing capability based on operation mode requirements. When complete color gamut data is needed, the first signal path with compression and de-compression circuits is activated. When complete color gamut is not required, the system switches to the second signal path that bypasses these circuits, thereby reducing power consumption while maintaining adaptability to different operation modes.
Solution Approach 2:
The patent extracts the compression and de-compression functionality from the mandatory processing path by providing it as an optional first signal path. The second signal path eliminates these components when they are not needed, allowing the system to take out unnecessary processing steps while preserving the capability to process complete color gamut data when required.
Data Source
AI summary
A drive circuit applicable to a display device includes a first signal path and a second signal path. The first signal path, configured to receive and transmit image data, includes a compression unit configured to perform a compression procedure on the image data to generate compression data; a storage unit configured to store the compression data; and a de-compression unit configured to perform a de-compression procedure on the compression data to recover the image data. The second signal path is configured to transmit the image data to the storage unit so as to bypass the compression unit, and transmit the image data received from the storage unit to a display unit so as to bypass the de-compression unit when the image data is not transmitted by the first signal path. The received image data is passed through the first signal path or the second signal path depending upon its characteristics.