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Image reproduction method and image reproduction device

An image and image display technology, applied in image communication, digital recording/reproduction, television, etc., can solve the problem of unable to reproduce seamlessly, and achieve the effect of effective utilization

Inactive Publication Date: 2007-08-01
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, there is a problem that seamless playback cannot be performed on a stream that is recorded on the recording medium as described above and that combines a plurality of streams with different encoding types.

Method used

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  • Image reproduction method and image reproduction device
  • Image reproduction method and image reproduction device

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0240] FIG. 1 is a diagram for explaining an image reproduction device according to Embodiment 1 of the present invention.

[0241] The image reproduction device 100 of this embodiment reproduces a concatenated stream obtained by concatenating a plurality of encoded image streams with different encoding methods.

[0242] The image reproduction device 100 includes: a stream reading unit 110 for reading a multimedia bit stream recorded on a recording medium M as a system stream Sst; a stream buffer 111 for storing the system stream Sst read from the recording medium M; The system decoder 101 that reads the system stream Sst from the stream buffer 111 and extracts the side information CBbp, CBfp, Dcd included in the system stream Sst and the coded stream Cst; and stores the coded stream Cst from the system decoder 101 A stream buffer 102 of . Here, VOB streams corresponding to various encoding methods are read from a recording medium supporting multiple encoding methods such as ...

Embodiment approach 2

[0291] FIG. 6 is a diagram for explaining an image reproduction device according to Embodiment 2 of the present invention.

[0292] The image reproduction device 100a according to Embodiment 2 can decode in parallel the end of the preceding stream in the concatenated stream obtained by concatenating two streams having different encoding methods, and the beginning of the subsequent stream in the concatenated stream. The connected two streams with different coding schemes are played back seamlessly without showing a gap.

[0293] The configuration of the image reproduction device 100a of the second embodiment is basically the same as that of the first embodiment, but the stream buffer 111A, the system decoder 101A, the stream buffer 102A, the stream input control unit 22A, and the display control unit in the second embodiment The operation of the portion 24A is different from that in the first embodiment.

[0294] That is, the above-mentioned stream buffer 111A at the front sta...

Embodiment approach 3

[0335] FIG. 10 is a diagram for explaining an image reproduction device according to Embodiment 3 of the present invention.

[0336] The image reproduction device 100b according to the third embodiment can quickly decode the head part of the subsequent stream among the two connected streams with different coding methods, so that the two connected streams with different coding methods can be uninterrupted. The display regenerates intermittently and seamlessly.

[0337] The image reproduction device 100b of the third embodiment basically has the same configuration as the image reproduction device 100 of the first embodiment, except that the stream reading unit 110B, the stream buffer 111B, the system decoder 101B, the stream buffer 102B, and the decoder The configuration of Dd1B to DdnB is different from that of the first embodiment.

[0338] That is, the stream buffer 111B at the preceding stage of the system decoder has a larger buffer capacity than that of Embodiment 1, and ...

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PUM

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Abstract

There is provided an image reproduction device for reproducing a concatenated stream obtained by concatenating a plurality of streams of different codec methods, in a seamless way. The image reproduction device (100) reproduces a concatenated stream obtained by concatenating a plurality of streams of different codec methods such as the MPEG-2 method and the MPEG-4 AVC method. The image reproduction device (100) includes a stream buffer (102) for accumulating the concatenated stream Bst and a plurality of decoders (Dd1 to Ddn) corresponding to various codec methods. A decoder for decoding each stream in the concatenated stream Bst outputted from the stream buffer (102) is selected from the plurality of decoders according to the codec method of each stream.

Description

technical field [0001] The present invention relates to an image reproduction method and an image reproduction device. In particular, it relates to a technology enabling seamless playback of a concatenated stream obtained by concatenating a plurality of coded video streams having different encoding schemes. Background technique [0002] Conventionally, there has been a regenerating device that seamlessly regenerates streams of different systems in succession, that is, without connection points. For example, Japanese Patent Application Laid-Open No. 2002-298509 (Patent No. 2002-17283) discloses a device for seamlessly reproducing a bit stream having discontinuous system time information. [0003] Hereinafter, the stream playback device described in the above publication will be briefly described. [0004] Fig. 27 is a diagram illustrating the stream playback device. [0005] The stream reproduction device 200 decodes and reproduces a multimedia bit stream edited by an auth...

Claims

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Application Information

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IPC IPC(8): H04N5/93H04N5/92G11B20/10H04N19/00H04N19/102H04N19/159H04N19/162H04N19/169H04N19/196H04N19/423H04N19/44H04N19/48H04N19/503H04N19/577H04N19/70H04N19/85
CPCH04N5/85G11B2020/10685G11B20/10527H04N5/781H04N9/877G11B27/322H04N9/7921H04N9/8205G11B20/1217H04N9/8042G11B2220/2541
Inventor 西孝启近藤敏志井口雅保远间正真笹井寿郎杉尾敏康
Owner PANASONIC CORP
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