Device and method for decoding video

Abstract

The invention relates to a video decoder device and a method thereof. The device comprises a device resources perceivable unit, a frequency control unit and a multitask decoder. The device resources perceivable unit is used for determining the present available power; the frequency control unit is used for assigning working frequency for each task according to the present available power determined by the device resources perceivable unit; the multitask decoder is used for dividing video code stream into a plurality of tasks and decoding each task according to the working frequency for each task assigned by the frequency control unit. In the invention, the multitask parallel processing is carried out on the decoder and the frequency of each task and each function module is dynamically adjusted, thus reducing the power consumption under the premise of satisfying the system performance.

Description

technical field [0001] The present invention relates to the field of digital video signal processing, in particular to a video decoding device and method. Background technique [0002] With the continuous development of the communication industry, terminals have gradually evolved from mobile phones with a single call function to voice, data, image, music and multimedia, specifically including smart phones and PDAs. [0003] However, as most terminals, especially mobile terminals, rely entirely on batteries for power supply, as the functions of mobile devices become more and more powerful, their power consumption is also increasing. Therefore, the use time and standby time of the terminal equipment must be improved. For this problem, there are currently two solutions: one is to equip a battery with a larger capacity; but the general trend of increasing the battery capacity will increase the cost of the entire device. The other is to improve the system design and adopt advan...

AI Technical Summary

Problems solved by technology

The existing technology mainly studies the reduction of the complexity of the decoder algorithm, and seldom considers the internal relationship between the internal modules of the video decoder and power consumption control.

To reduce the power consumption of video decoders, the method of reducing the decoding complexity is mostly adopted. Although the power consumption of the decoder can be reduced to a certain extent, many of them reduce the performance while reducing the complexity, and it is difficult to guarantee the quality of video reconstruction.

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