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Data reproducing apparatus

A data regeneration, buffer technology, applied in data recording, digital recording/reproduction, time or data compression/expansion, etc., can solve problems such as overflow and increase in the amount of stored data

Inactive Publication Date: 2006-12-06
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the amount of stored data in the ring buffer memory 107 increases, and overflow may occur.

Method used

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Experimental program
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Embodiment Construction

[0092] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0093] (1) Structure of data reproduction device

[0094] figure 1 The data reproducing device of the present invention is shown as a whole in the figure, and the data recording medium (DSM, data storage media) 1 is driven by digital data such as recording such as video frequency, audio frequency, subtitle and TOC (table of contents, table of contents) information. Unit 2 Disassembled Disc Composition. However, DSM 1 may also be a detachable or non-detachable optical recording medium or magnetic track recording medium or magneto-optical recording medium or semiconductor storage element, and other digital data recording media.

[0095] The drive unit 2 has a mechanism for mechanically attaching and detaching the DSM 1 , and a drive for driving a pickup composed of an optical head for reading a reproduced signal from the DSM 1 . However, the read head corr...

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Abstract

A data reproduction apparatus and a data storage medium for synchronously reproducing multiplexed data with video, audio, and superimposed dialogue data compressed at a variable rate and performing various functions. Data are reproduced from the data storage medium using sector numbers, and data for negative sector numbers carried by some sectors are also reproduced. Multiplexing information indicating whether or not image, voice, and superimposed dialogue data is each multiplexed and information for the positions of access points used for data search and random access are stored in the positions represented by these negative sector numbers and reproduced so as to enable multiplexed data with video, audio, and superimposed dialogue data compressed at a variable rate to be synchronously reproduced and various functions to be executed.

Description

[0001] This application is a divisional application of an application with a filing date of December 19, 1994, an application number of 94191733.9 and an invention title of "Data Reproduction Device". technical field [0002] The present invention relates to a data reproducing device and a data recording medium, for example, it is very suitable for use in a recording medium that uses moving images to be digitally processed and recorded. Background technique [0003] So far, the optical disk of the recording medium that records the moving image after digital processing is used as a reproduction device for reproducing data, Figure 12 The above-mentioned data reproducing apparatus corresponding to a variable compression rate has been introduced by the present applicant in JP-A-6-124168 (May 6, 1994). In this data reproduction device, the data recorded on the optical disc 101 is reproduced by the head 102 . The pickup head 102 irradiates the optical disc 101 with laser light, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B20/10G11B20/12H04N5/91G11B20/00G11B20/18G11B27/10G11B27/11G11B27/30G11B27/32G11B27/36H04N5/85H04N5/907H04N5/92H04N5/926H04N5/937H04N9/804H04N9/806H04N9/82H04N9/85H04N9/877
CPCH04N9/8042G11B20/00007G11B20/00695G11B20/10527G11B20/12G11B20/1251G11B20/1809G11B20/1816G11B20/1833G11B20/1866G11B27/105G11B27/11G11B27/3036G11B27/3063G11B27/329G11B27/36G11B2020/1232G11B2020/1285G11B2220/213G11B2220/2537G11B2220/2545G11B2220/2562G11B2220/65H04N5/783H04N5/85H04N5/907H04N5/9206H04N5/9261H04N5/937H04N9/7921H04N9/8063H04N9/8205H04N9/8227H04N9/8233H04N9/85H04N9/877
Inventor 河村真藤波靖
Owner SONY CORP