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Signal reproducing device

A technology for signal reproduction and signal switching, which is applied in the fields of digital video signal modification, image communication, television, etc., which can solve the problems of increased circuit area and cost, and achieve the effect of improving work efficiency.

Inactive Publication Date: 2007-05-23
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when processing a plurality of streams, a plurality of signal reproduction devices are required, which brings about problems such as increased circuit area and cost

Method used

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  • Signal reproducing device
  • Signal reproducing device
  • Signal reproducing device

Examples

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Embodiment Construction

[0036] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiments is exemplary in nature and is not intended to limit the invention and its suitability or uses.

[0037] FIG. 1 is a block diagram showing the configuration of a signal processing and reproducing device according to an embodiment of the present invention. As shown in FIG. 1 , reference numeral 100 is a stream buffer, and two bit streams called streams 1 and 2 are input to the stream buffer 100 and stored in the buffer 1001 in the stream buffer 100 respectively. , 1002. In this embodiment, all the input bit streams are video streams compressed by the MPEG2 system, which will be described below.

[0038] The switch 104 selectively outputs one of the streams 1 and 2 stored in the buffers 1001 and 1002 of the stream buffer 100 to the decoder 101 .

[0039] Specifically, the signal output path in the switch 104...

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Abstract

According to input stream information on a plurality of encoded streams, a decode control unit (103) sets an allocation time required for decoding of the processing unit of the encoded streams. According to the allocation time, a decode unit (101)performs decoding while switching between a plurality of the encoded streams.

Description

technical field [0001] The present invention relates to a signal reproducing device for reproducing a compression-coded stream. Background technique [0002] FIG. 6 is a block diagram showing a conventional configuration of a signal reproduction device that decodes a bit stream compressed by the MPEG encoding method. As shown in FIG. 6 , the signal reproduction device includes a stream buffer 600 temporarily storing an input stream, a decoding unit 601 decoding the input stream stored in the stream buffer 600, and converting the stream decoded by the decoding unit 601 into The video output unit 602 that outputs the data as video data, and the clock 603 that outputs time information to the video output unit 602 . [0003] The above decoding unit 601 includes a variable length decoding unit 6011 , an inverse quantization unit 6012 , an IDCT unit 6013 , an addition unit 6014 , and a motion compensation prediction unit 6015 . Next, each constituent element will be described. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N19/00H04N19/172H04N19/174H04N19/30H04N19/42H04N19/423H04N19/44H04N19/503H04N19/587H04N19/85
CPCH04N19/00781H04N19/00478H04N19/00533H04N21/2365H04N21/4347H04N19/61H04N19/44H04N19/42
Inventor 松井智子山口良二帆足克己
Owner PANASONIC CORP