Video decoding device and method

Abstract

The invention belongs to the field of video decoding and provides a video decoding device and method. The video decoding device comprises a limited major state machine and a decoding module, wherein the limited major state machine is used for controlling the code stream of a video. The video decoding device further comprises a layering module and a combining module, wherein the layering module is used for dividing the limited major state machine into multiple limited sub state machines with functions mutually independent, each limited sub state machine has multiple states, and the combining module is used for combining multiple relevant states of each limited sub state machine. The decoding module is used for decoding the code stream controlled by the limited sub state machines with the states combined. According to the video decoding device and method, the structures of the state machines are simplified, the limited major state machine can be controlled more easily and conveniently, and power consumption during decoding is effectively reduced due to the fact that the state number and the skipping number are reduced.

Description

technical field [0001] The invention belongs to the field of video decoding, and in particular relates to a video decoding device and a decoding method. Background technique [0002] The algorithm of the latest video codec standard H.264 is very complex, and the code stream control in the video decoding process is also an extremely complicated work. In the decoding process, the control of the code word is realized through the state machine. The mapping between the state in the finite state machine and the video input codeword is a complex process. In the existing design of the video decoding codeword control state machine, the state machine is often designed as a sequential structure. The state machine of this sequential structure has many states, complex jumps, and high power consumption. In the H.264 video decoding process, this state machine is used to control the decoded codeword, and the state number of the state machine reaches more than 200. The control of such a h...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a video decoding device and a decoding method, aiming at solving the problems in the existing video decoding device that the state machine is complex and the state number of the state machine is too large to be controlled

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