Transition coder applicable to HEVC ( high efficiency video coding) standards

Abstract

The invention discloses a transition coder applicable to HEVC ( high efficiency video coding) standards and mainly solves the problems of multiple use of multipliers and a complicated circuit in the prior art. The transition coder comprises a one-dimensional DCT (discrete cosine transformation) module (1), a transposition buffer module (2) and a top layer control module (3), wherein the one-dimensional DCT module (1) adopts a plurality of butterfly computing units and a plurality of odd coefficient processing units for completing each DCT in the HEVC standards, the odd coefficient processing units resolve the complicated multiply operation into multistage circuits and adopt a shifter, an adding device and a subtracter, i.e. the multistage shifter, the adding device and the subtracter are used for replacing a matrix multiplier, and the circuit structure is simplified. The transition coder has the advantages that the structure is simple and regular, the reusability is high, the key route is short, the lock frequency is high, and the integration is easy. The transition coding on video residual data is efficiently realized under the condition of not using the multipliers.

Description

technical field [0001] The invention belongs to the technical field of electronic circuits, and in particular relates to a transform encoder structure in the video compression encoding standard HEVC, which can be applied to the design of ultra-large-scale integrated circuits. Background technique [0002] As we all know, with the continuous development of the electronic information industry, the application of digital video technology has become increasingly widespread. However, with the continuous improvement of image resolution, the corresponding amount of data also increases. The contradiction between these massive data and hard disk capacity and channel capacity is becoming more and more prominent. Therefore, the problem of high data rate and large amount of data poses a huge challenge to existing compression algorithms, and becomes a major bottleneck in expanding the application field of high-resolution video. How to reduce the amount of data without losing or trying ...

AI Technical Summary

Problems solved by technology

However, the one-dimensional transformation module in this structure still needs to use 48 multipliers, and its circuit structure is more complicated, which is not conducive to efficient implementation of hardware, and the clock cycle required to realize the transformation coding of a larger block is also relatively long

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