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Video decoding apparatus

A technology for decoding equipment and video, applied in digital video signal modification, television, electrical components, etc., can solve problems such as increased processing load

Inactive Publication Date: 2005-02-09
PANASONIC CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] However, in the method of performing padding processing before writing to the outer area of ​​the decoded image of the frame memory, it is necessary to read every boundary pixel of the decoded image from the frame memory
For this reason, the frame memory and the processing unit that perform the stuffing process must be accessed many times, and there arises a problem that the processing load greatly increases in the stuffing process

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  • Video decoding apparatus
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no. 3 example

[0308] The mobile phone 1B of the third embodiment differs from the first and second embodiments in the structure of an image processing unit 10B. The image processing unit 10B of the third embodiment is described below.

[0309] 3.1 Image processing unit 10B

[0310] Such as Figure 15 As shown, the image processing unit 10B is composed of a decoding unit 100B, an input / output unit 200B, a memory control unit 300B, and an external memory 400B.

[0311] (1) External memory 400B

[0312] The external storage 400B has a memory unit 401B, a frame memory 402B, and a stuffing unit 404B. Here the external memory 400B is a DRAM.

[0313] The memory unit 401B and the frame memory 402B are the same as the memory unit 401 and the frame memory 402 in the first embodiment, and thus descriptions thereof are omitted.

[0314] (A) Filling unit 404B

[0315] The padding unit 404B receives pixel data of a decoded image and an output address of the pixel data from the decoding unit 100B v...

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Abstract

A decoding apparatus lightens the load incurred by padding processing. When the decoding apparatus outputs decoded data to a frame memory, a padding unit in the decoding apparatus j udges whether the decoded data includes boundary pixels, and when boundary pixels are judged to be included, performs padding processing to an extension area using boundary pixel data. As a result, as well as pixels in one decoded macroblock being output, when boundary pixels are included in the output macroblock, the boundary pixels are output to the extension area. This eliminates the need to re-read the boundary pixels from the frame memory.

Description

[0001] This application is based on Japanese Application No. 2003-281097, the entire contents of which are incorporated herein by reference. technical field [0002] The present invention relates to a technique for decoding compression encoded digital video signals. Background technique [0003] With the digitization of global analog broadcasting systems such as NTSC (National Television System Committee) and PAL (Phase Alternation Line) and satellite broadcasting, and the digitization of home AV equipment, video is being transmitted as digital information via the Video conversion to digital signal generation. Typically, transmitting digital data is inefficient due to the large amount of information generated by converting video to digital information. For this reason, moving picture compression technology is used as a method of efficiently transmitting digital information. The MPEG (Moving Picture Experts Group) method is a representative of moving picture compression tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/36
CPCH04N19/00533H04N19/00666H04N19/00733H04N19/563H04N19/51H04N19/44
Inventor 和田由之吉冈康介西田英志
Owner PANASONIC CORP