Timing Controller Refresh Mark Table for Display Sub-Region Management
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Solution Overview
Problem
Display controllers require significant memory space and complex circuit structures when handling multiple display regions, leading to inefficient pixel information retrieval.
Innovation Solution
A timing controller with a refresh mark table and pixel controller that uses a mapping ratio to determine and adjust refresh marks, allowing for efficient pixel refresh operations across sub-regions, thereby reducing memory usage and simplifying the circuit structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display controller uses registers to store information of each display region and supports multiple display regions (e.g., 64 display regions), then the display controller can handle multiple regions, but the memory space required increases significantly (e.g., registers of about 2560 bits)
Solution Approach 1:
The patent divides the display region into multiple sub-regions and uses a counter to count only within each sub-region rather than the entire display region. This segmentation allows the same counter and register resources to be reused across multiple sub-regions, significantly reducing the memory space required while maintaining support for multiple display regions.
Solution Approach 2:
The counter and register resources are designed to be universal and reusable across different sub-regions. The same counter can count pixels in multiple sub-regions sequentially, and the same register can store information for different sub-regions at different times, eliminating the need for dedicated registers for each display region.
2Ease of operation
If the display controller uses a counter to count from the top left to the bottom right of the screen regions, then the counting function is implemented, but the circuit structure becomes large and complex
Solution Approach 1:
The patent segments the display region into multiple sub-regions and implements counting within each sub-region separately. This segmentation simplifies the circuit structure by limiting the counting range to smaller sub-regions, reducing the complexity of the counter and associated control logic compared to counting across the entire large display region.
3Ease of operation
If the display controller uses a counter to count from the top left to the bottom right, then the counting operation is performed, but the efficiency of searching for effective pixel information becomes relatively slow
Solution Approach 1:
By dividing the display region into multiple sub-regions and performing counting operations within each sub-region, the patent reduces the search space for effective pixel information. The controller can quickly identify which sub-regions contain effective pixels and focus processing only on those areas, significantly improving searching efficiency compared to scanning the entire display region sequentially.
Data Source
AI summary
A timing controller, a display apparatus, and an operation method thereof are provided. The display apparatus includes a display panel and a timing controller. The timing controller includes a refresh mark controller and a pixel controller. The refresh mark controller includes a refresh mark table, and a plurality of refresh marks in the refresh mark table correspond to a plurality of sub-regions of a display region in the display panel. The refresh mark controller determines whether the sub-regions need to be refreshed according to an image signal and responds to a specific sub-region required to be refreshed to adjust a specific refresh mark according to a mapping ratio. The pixel controller sequentially looks up whether the refresh marks in the refresh mark table are adjusted, obtains the sub-regions corresponding to the adjusted refresh marks according to the mapping ratio, and performs a pixel refresh operation to the sub-regions.