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AV decoder control method and AV decoder control appts.

A control method and technology of a control device, which can be applied to TVs, color TVs, and components of color TVs, etc., can solve the problem that fast forward playback or reverse playback cannot be realized.

Inactive Publication Date: 2008-03-12
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, fast forward replay or reverse replay cannot be achieved

Method used

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  • AV decoder control method and AV decoder control appts.
  • AV decoder control method and AV decoder control appts.
  • AV decoder control method and AV decoder control appts.

Examples

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Embodiment 1

[0027] To explain the AV decoder control method and the AV decoder control apparatus according to the first embodiment of the present invention, FIG. 1 shows a block diagram of a video CD player. In FIG. 1, the input unit 100 is constituted by, for example, a remote controller having at least one button and its control program. When a user presses a button, the input unit 100 outputs a corresponding signal. The playback controller 101 is realized by a CPU (Central Processing Unit), a main memory (such as a semiconductor memory) and its control program. The playback controller receives the signal output from the input unit 100 and controls the drive controller 102 and the AV decoder controller 103 . The drive controller 102 is realized by a CPU, a main memory (for example: semiconductor memory) and its control program. The drive controller 102 controls the drive 104 according to an instruction output from the playback controller 101 . The AV decoder controller 103 is realize...

Embodiment 2

[0046] In order to explain the AV decoder control method and the AV decoder control apparatus according to the second embodiment, FIG. 5 shows a block diagram of a video CD player. This video CD player includes a playback controller 110 that obtains an optimal bit length by repeatedly inputting a bit stream having a predetermined bit length to the AV decoder 105 and thereby makes the bits decoded by the AV decoder 105 Stream bit length optimization. In FIG. 5, the same reference numerals as those in FIG. 1 denote the same or corresponding parts.

[0047] In order to illustrate the AV decoder control method and the AV decoder control device according to the second embodiment of the present invention, FIG. 4 shows a flow chart of control flow.

[0048] The operation of the CD player during I playback will be described below with reference to FIG. 4. FIG. As in the first embodiment, in this second embodiment, it is still assumed that the user performs fast-reverse playback as t...

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PUM

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Abstract

There is provided an AV decoder control method and an AV decoder control apparatus for controlling an AV decoder so that it performs a trick play by continuously displaying I picture of MPEG video data, wherein a plurality of bit streams having a predetermined bit length and positioned at arbitrary intervals are sequentially and separately input to the AV decoder, and I pictures included in these bit streams having the predetermined bit length are continuously displayed while sequentially updating the I pictures, whereby high-speed I playback is realized.

Description

Technical field: [0001] The present invention relates to an AV decoder control method and an AV decoder control device for an AV decoding / playback device having an audiovisual (AV) decoder that decodes a bit stream including compressed video data and audio data to reproduce Play video and audio. More particularly, the present invention relates to an AV decoder control method and an AV decoder control device for performing trick play in which I pictures (intra-frame coded pictures) of video data are continuously displayed using the AV decoder. Background technique: [0002] In recent years, with the development of digital technology, reproducing methods using recording media such as optical discs and magnetic disks have gradually been practically applied to reproducing digital information sources, and various data compression / data multiplexing methods have been proposed. Moving Picture Experts Group (MPEG) is one of such methods, especially MPEG1 is used for video CDs. In t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/783H04N5/92H04N5/85H04N5/93H04N19/00H04N19/44H04N19/625H04N19/70H04N19/85
CPCH04N5/85H04N5/783H04N5/92
Inventor 天野智康
Owner PANASONIC CORP
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