JP2011015358A5

JP2011015358A5 -

Info

Publication number: JP2011015358A5
Application number: JP2009160033A
Authority: JP
Filing date: 2009-07-06
Publication date: 2012-08-23
Anticipated expiration: 2029-07-06

Description

本発明の映像復号化装置は、符号化データに対して所定の複数枚のフレーム期間に対応する周期で平均化してエントロピー復号化を行い、中間データを生成する第１の復号化手段と、前記第１の復号化手段により生成された中間データを格納する格納手段と、所定フレーム数以上の前記中間データが前記格納手段に格納されてから、１フレーム期間に対応する周期で前記格納手段に格納された前記中間データを画面内予測または画面間予測により予測復号化して、画像データを生成する第２の復号化手段とを備えることを特徴とする。 A video decoding apparatus according to the present invention is a first decoding means for performing intermediate decoding on coded data by performing averaging on a cycle corresponding to a plurality of predetermined frame periods to generate intermediate data; Storing means for storing intermediate data generated by the first decoding means; and storing the intermediate data having a predetermined number of frames or more in the storage means in a cycle corresponding to one frame period after the intermediate data is stored in the storage means It has been the intermediate data by predictive decoding by intra prediction or inter prediction and characterized in that it comprises a second decoding means for generating image data.

Claims

First decoding means for performing entropy decoding by averaging the encoded data in a cycle corresponding to a plurality of predetermined frame periods to generate intermediate data;
Storage means for storing intermediate data generated by the first decoding means;
After being stored in the intermediate data the storage means over a predetermined number of frames, and predictive decoding by said storing means and the intermediate data stored in the intra prediction or inter prediction to a period corresponding to one frame period, And a second decoding means for generating image data.

The storage means buffers the binarized data after the entropy decoding as the intermediate data,
The second decoding unit is characterized by reading out, from among the binarized data buffered in the storage unit, the binarized data of the frame to be decoded, and performing predictive decoding on the basis of the vertical synchronization timing of the video. The video decoding apparatus according to claim 1, wherein

3. The video decoding apparatus according to claim 1, wherein the storage unit also stores the image data generated by the second decoding unit.

Comparing means in the storage means for comparing the write address of the intermediate data generated by the first decoding means with the read address of the intermediate data used by the second decoding means;
The control method according to any one of claims 1 to 3, further comprising: control means for controlling to stop or restart the entropy decoding process by the first decoding means according to the comparison result by the comparison means. The video decoding apparatus according to claim 1.

A first decoding step of generating intermediate data by performing entropy decoding by averaging encoded data with a period corresponding to a plurality of predetermined frame periods ;
Storing the intermediate data generated in the first decoding step in a storage unit;
After being stored in the intermediate data the storage means over a predetermined number of frames, and predictive decoding by said storing means and the intermediate data stored in the intra prediction or inter prediction to a period corresponding to one frame period, And D. a second decoding step of generating image data.

A first decoding step of generating intermediate data by performing entropy decoding by averaging encoded data with a period corresponding to a plurality of predetermined frame periods ;
Storing the intermediate data generated in the first decoding step in a storage unit;
After being stored in the intermediate data the storage means over a predetermined number of frames, and predictive decoding by said storing means and the intermediate data stored in the intra prediction or inter prediction to a period corresponding to one frame period, A program causing a computer to execute a second decoding step of generating image data.

A computer readable storage medium storing the program according to claim 6.