Video processing method and circuit for reducing data bandwidth

Abstract

The invention provides a video processing method for reducing a data bandwidth. The method comprises the following steps of: when image data is processed and written back into a memory by an image processing circuit, nondestructively compressing the image data by using a nondestructive compression circuit, and writing the image data back into the memory; and when the image data is read from the memory by the next image processing circuit, decompressing the image data by using the nondestructive decompression circuit, and processing the image data. The invention also provides a video processing circuit for reducing the data bandwidth. According to the method and the circuit, a high-resolution screen can be supported under the conditions of no increase of memory frequency and no addition of memory channels, so that a bandwidth required by graphic image processing is greatly reduced.

Description

technical field [0001] The invention relates to a video processing method and circuit for reducing data bandwidth. Background technique [0002] With the advancement of technology, users have higher and higher demand for high-definition video from 480p to 720p in the past to 1080p or even 2160p now, because high-definition video will bring better user experience. For example figure 1 As shown, the current technology interacts in the form of original image data. In the image processing circuit of the current technology, no matter whether it is read or written back, it is uncompressed original image data. In the original image data, it is actually There is also a large amount of redundant information, and the bandwidth resources consumed by the image processing process have always been the largest consumer of memory bandwidth, so the promotion of high-definition video has made the memory bandwidth resources that are the bottleneck of the system speed more tense. [0003] In o...

AI Technical Summary

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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