Display Source Driver Power Reduction via Pattern Buffer
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Solution Overview
Problem
Existing display devices consume excessive power, especially when displaying simple patterns or black screens, due to the continuous operation of decompressors and memories even when no image update is required.
Innovation Solution
A method and device that compress and decompress image frames, scan for simple patterns, and store results in a pattern buffer to reduce power consumption by deactivating memory and decompressor when no image update is needed, allowing only necessary components to operate during idle states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If decompressor and memory operate continuously to ensure image display readiness, then image display reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic operation mode switching for the decompressor and memory components. The system transitions between active and idle states based on whether image updates are required, allowing components to adapt their operational characteristics to current display needs rather than maintaining continuous operation
Solution Approach 2:
The system discards the decompressed image data in memory when no image update is required, and recovers power by deactivating the decompressor and memory. This allows the system to eliminate unnecessary data retention and component operation during idle periods
2Productivity
If decompressor and memory operate continuously to ensure image display readiness, then image processing capability is maintained, but energy loss increases
Solution Approach 1:
The system performs partial action by operating the decompressor and memory only when necessary for image updates. Instead of maintaining full operational capability continuously, the system activates these components only for the duration and frequency required by actual display update needs
3Use of energy by moving object
If simple pattern detection and selective rendering is implemented, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The system performs preliminary action by detecting simple patterns in the image data before full rendering. This early detection allows the system to identify opportunities for power savings in advance, enabling selective rendering decisions to be made before committing full processing resources
Solution Approach 2:
The system extracts and identifies simple pattern regions from the overall image data. By separating these simple pattern areas from complex regions, the system can apply different processing strategies - rendering only complex regions while using simplified or skipped rendering for simple pattern areas
Data Source
AI summary
A method for driving a display, a display device, and a source driver. The method includes receiving and storing data obtained by dividing and compressing an image frame, decompressing the data, scanning the decompressed data, storing a result of the scanning, and displaying an image corresponding to the scan result.