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Method and apparatus for special reproduction of coded data

A technology for encoding data and decoding data, applied in the field of reverse reproduction of encoded data, can solve problems such as unnaturalness and reduction in the number of images, and achieve the effects of reducing the number of times, reducing the display delay time, and eliminating faults

Inactive Publication Date: 2004-01-21
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] However, when only I-pictures are displayed individually, for example, as shown in FIG. 33, only one image frame can be obtained every 15 frames, so that the number of displayed images is extremely reduced and becomes unnatural.

Method used

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  • Method and apparatus for special reproduction of coded data
  • Method and apparatus for special reproduction of coded data
  • Method and apparatus for special reproduction of coded data

Examples

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Embodiment Construction

[0064] FIG. 1 shows the structure of an exemplary embodiment of an encoded data special reproducing apparatus for realizing a special reproducing method of encoded data of the present invention, wherein an optical disc is used as a recording medium.

[0065] In the figure, reference numeral 1 denotes an optical disc drive for reading out from an optical disc encoded data compressed and recorded according to the MPEG standard. Also shown in the figure: a decoder 2 consisting of an encoding buffer 2-1; a decoding processor 2-2 and a frame buffer 2-3 for decoding data read out from the optical disc drive 1; for displaying A display device 3 for data decoded by a decoder 2; a controller 4 for controlling the decoder, which reads out the special data and the A normal reproduction signal or a special reproduction signal is obtained; and a special data access device 5 for driving the optical disc drive 1 in a manner to read the special data from the optical disc under the control of ...

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Abstract

A coded-data special reproduction method comprises the steps of continuously decoding portions of the intra-frame coded data and the inter-frame forward predictive coded data constituting the unit group data read out, while intermittently decoding the remaining coded data; writing the decoded data in the frame buffer means; reading out the data therefrom in a reverse order of the original pictures; and displaying the pictures thus read out. An apparatus contrived to carry out the above method comprises a buffer for storing the group data; a decoder; and a frame buffer. Special reverse reproduction of the coded data can be realized without raising the coded-data transfer rate to the decoder or increasing the storage capacity of the frame buffer.

Description

technical field [0001] The present invention relates to a particular method and apparatus for reproducing encoded data, which means encoded data stored via a communication medium or the like, or encoded video or audio data read from a recording medium such as an optical disc. More precisely, the present invention is applicable to the reverse reproduction of encoded data. Background technique [0002] In recording media such as digital video discs (hereinafter referred to as DVDs), communication media such as LAN (Local Area Network), or broadcasting media such as satellites for processing video and audio signals converted into digital data, data is generally referred to as being digitally transmitted. Compressed and coded to enable efficient processing of video and audio signals, a system for compressing and coding data is proposed for this purpose, which is the MPEG (Moving Picture Coding Experts Group) system. An exemplary MPEG encoder will be described below with referen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/92G06T9/00G11B20/10H04N5/783H04N5/93H04N9/804H04N9/877H04N19/102H04N19/103H04N19/136H04N19/159H04N19/177H04N19/189H04N19/37H04N19/423H04N19/426H04N19/44H04N19/46H04N19/50H04N19/503H04N19/577H04N19/61H04N19/625H04N19/70H04N19/91
CPCH04N5/783G06T9/004H04N9/877H04N9/8042G11B20/10
Inventor 武藤明宏
Owner SONY CORP
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