Method video encoding and decoding preserving cache localities

Abstract

The invention relates to a method for encoding / decoding a video stream including a plurality of images (A, B, C) in a video processing apparatus having a processing unit (11) coupled to a first memory (12) , further comprising a second memory (13) , comprising the steps: providing a subset of image data stored in the second memory (13) in the first memory (12) ,- simultaneous encoding / decoding ofmore than one image (B, C) of the video stream, by accessing said subset, wherein the simultaneously encoding / decoding is performed by access sharing to at least one image (A) . For reducing the traffic or the number of access to second memory (13) an apparatus is proposed including: a processing unit (11) for performing an encoding / decoding process of video data; a first memory (12) coupled to the processing unit (11) for storing image data required for encoding / decoding of video data,- a second memory (13) , wherein the video stream includes a plurality of images (A, B, C) ; the first memory (11) is adapted to store a subset of image data of the second memory (13) in the first memory (12) and the processing unit (11) is adapted to simultaneously encode / decode more than one image (B, C) of the video stream by accessing said subset of image data in the first memory (12) , wherein the simultaneously encoding / decoding is performed by sharing access to at least one image .

Description

technical field [0001] The invention relates to a method for encoding / decoding video data. Furthermore, the present invention also relates to a device for encoding / decoding video data. Background technique [0002] In video encoding / decoding, reference frames are used. Typical examples of such encodings are standards like MPEG2, H.264, etc. However, in patented algorithms such as those used for web cams, reference frames are also used. [0003] Typically, a video processing device includes a processor, eg, a digital signal processor, for performing encoding / decoding operations based on uncompressed and / or encoded video data. There are different types of memory connected to the processor. Usually, video data is stored in a memory with a large storage capacity because for high-quality video, a large amount of data needs to be processed. In addition, there is a memory of smaller size coupled to the processor for use as a temporary buffer. A larger sized memory for storing...

AI Technical Summary

Problems solved by technology

Reduced bandwidth requirements reduce image quality

Also, it can only be applied on encoders

Also, it increases the bit rate since not all features of the standard can be used

Images