Timing Controller Image Compression for Display Memory Reduction
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Solution Overview
Problem
As the resolution of display panels increases, the amount of image data required also increases, leading to higher costs due to the need for increased memory and bandwidth in conventional flat-panel displays.
Innovation Solution
A display device comprising a display panel and a timing controller with a receiving unit, compression unit, decompression unit, and processing unit that processes and compresses images to reduce memory requirements and bandwidth, allowing for efficient image display without the need for large storage spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number and bandwidth of memory are increased to access image data for high-resolution display panels, then the image data access capability is improved, but the cost of the flat-panel display is increased
Solution Approach 1:
The patent extracts only the necessary portions of image data for processing by storing previous frame data in compressed form in a frame memory. The compression unit compresses the processed image data before storage, and the decompression unit decompresses it when needed, thereby reducing the memory capacity requirement while maintaining the ability to access necessary image data for high-resolution displays
Solution Approach 2:
The patent changes the parameter of image data representation by applying compression algorithms. The compression unit transforms full-resolution image data into compressed form, reducing the quantity of data that needs to be stored in memory. This parameter change allows the system to handle high-resolution display data with reduced memory capacity, thereby lowering overall system cost
2Measurement precision
If the resolution of the display panel is increased, then the display quality is improved, but the amount of image data required is increased
Solution Approach 1:
The patent extracts essential image data features while discarding redundant information through compression. The compression unit processes full-resolution image data and stores only the necessary compressed representation in frame memory, allowing the system to support high display resolution without proportionally increasing the volume of stored image data
Solution Approach 2:
The patent creates a compressed copy of the previous frame image data instead of storing the full-resolution data. The frame memory stores this compressed copy, which is then decompressed when needed for processing, enabling high-resolution display operation with reduced data volume requirements
Data Source
AI summary
A display device is disclosed. A display panel displays a first image according to a first output image. A timing controller includes a receiving unit, a compression unit, a decompression unit and a processing unit. The receiving unit receives a first input image and a second input image and outputs a first processed image and a second processed image. The first input image is the same as the first processed image. The second input image is the same as the second processed image. The compression unit generates a first compressed image according to the first processed image. The receiving unit stores the first compressed image. The decompression unit processes the stored first compressed image to generate a first decompressed image. The processing unit processes the second processed image and the first decompressed image to generate the first output image.