Audio-video signal processing method of low speed-multiplying CPU

Abstract

The method for processing audio, video signals includes steps: first, separating audio and video signals; then, converting video signal to BMP file format to be played directly; operating audio signal by CPU, the method converts it to format needed for playing, sets up synchronous signals, and plays audio, video signals. BMP file format can played directly without need of CPU operation. Features are: not occupy and use of CPU resources, fast and smooth playing video signal, capable of processing 8-20 frames in audio, video files.

Description

technical field [0001] The invention relates to a method for processing audio and video signals by a CPU, in particular to a method for processing and playing audio and video signals by a CPU with a low multiple speed. The method can realize fast and smooth playback of the audio and video signals by the CPU with a low multiple speed. Background technique [0002] At present, the playback of audio and video signals is usually implemented by a high-speed CPU, because for a low-speed CPU, audio and video signals need to be decoded and processed separately, and the low-speed CPU has insufficient resources to realize audio and video. The smooth playback of the signal often causes the audio and video to be out of sync, unable to play, or even downtime. [0003] Because the existing audio and video signals are packaged and compressed separately, and then combined into one file for transmission, the received audio and video signals need to be decompressed, and then performed data ca...

AI Technical Summary

Problems solved by technology

[0002] At present, the playback of audio and video signals is usually implemented by a high-speed CPU, because for a low-speed CPU, audio and video signals need to be decoded and processed separately, and the low-speed CPU has insufficient resources to realize audio and video. The smooth playback of the signal often causes the audio and video to be out of sync, unable to play, or even downtime

[0003] Because the existing audio and video signals are packaged and compressed separately, and then combined into one file for transmission, the received audio and video signals need to be decompressed, and then performed data calculations before playing. Of course, playing these audio and video signals usually uses The high-speed CPU is the most popular, the size of the high-speed CPU is relatively large, the price is relatively expensive, and the promotion cost is relatively high

Due to its limited resources, the low-speed CPU cannot process the above-mentioned audio and video data at the same time. In the existing situation, it is impossible to achieve smooth and smooth playback of audio and video data.

[0004] Due to its very high cost performance, low-speed CPUs are widely used in current single-chip microcomputers and various processors. It is a pity that they cannot process audio and video signals smoothly, and it is a waste of system resources.

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