A bandwidth-saving screen display control method and circuit

Abstract

The invention provides a screen display control method and a circuit with bandwidth saving. In the process of screen display control, an image enhancement circuit reads an original image from a memory to perform image enhancement processing; lossless compression is carried out on a macro block which is subjected to image enhancement processing according to common code table information; image data which is subjected to lossless compression is stored in an image storage area of the memory which is subjected to image enhancement processing; after the image enhancement circuit processes a frame, a screen display controller with the function of lossless compression reads the image to be displayed which is subjected to lossless compression from the memory; after the image is subjected to lossless decompression according to the common code table information, the image macro block data is converted into the image full line data flow which can be used for screen display; and the data is sent to screen display according to a row order which is required by a screen.

Description

technical field [0001] The invention relates to a bandwidth-saving screen display control method and circuit. Background technique [0002] With the advancement of technology, users have higher and higher requirements for the screen resolution of handheld devices, because high-resolution screens will bring better user experience. But at the same time, the demand for memory bandwidth of high-resolution screens is also rapidly increasing .Because the images displayed on the screen are stored in the memory in the form of raw image data in the past, the display bandwidth has always been a large consumer of memory bandwidth, so the use of high-resolution screens makes the memory bandwidth resources that are the bottleneck of the system speed even tighter. [0003] In order to solve the problem of tight memory bandwidth of high-resolution screens, engineers have made many solutions: [0004] 1. Increase the data bandwidth that the memory can provide by increasing the operating fr...

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Problems solved by technology

[0004] 1. Increase the data bandwidth that the memory can provide by increasing the operating frequency of the memory particles, but the high frequency brings high power consumption and high heat generation, which is difficult for handheld devices to accept;

[0005] 2. Learn from the PC method, increase the number of memory channels to obtain greater bandwidth, but this method will increase the cost of the handheld device rapidly, and at the same time, due to the increase in data routing and memory particles, it will cause difficulties in PCB wiring

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