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Optical disc playback apparatus

A playback device, optical disc technology, applied to the recording of information on the magnetic disc, optical recording/reproduction, instruments, etc., which can solve the problems of increased access frequency of optical disc drives, reduced memory efficiency, and increased power consumption.

Inactive Publication Date: 2006-10-04
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, memory efficiency decreases, access frequency to optical drives increases, and power consumption increases

Method used

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  • Optical disc playback apparatus
  • Optical disc playback apparatus
  • Optical disc playback apparatus

Examples

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Embodiment Construction

[0020] The optical disc playback device and control program of the present invention will be described below with reference to the accompanying drawings.

[0021] figure 1 is a block diagram showing the configuration of a notebook PC as an embodiment of the optical disk playback apparatus of the present invention. The notebook PC 10 includes: an optical disc drive unit 101 such as an optical disc drive; a disc reading unit 102 that controls the optical disc drive unit 101; a navigation management that explains the program chain (PGC) and the data to be read by the specified disc reading unit 102 device 103; pre-read buffer 104 in which data read from the optical disc 20 is temporarily stored; hard disk drive (HDD) 105; demultiplexing data into video data, audio data, and sub-picture data video decoder 107; sub-picture decoder 108; audio decoder 109; video renderer (video renderer) 110; liquid crystal display (LCD) 111; audio renderer (audio renderer) 112; The disc reading un...

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PUM

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Abstract

According to one embodiment, program chain information indicating a playback order is read at the start of reading. In accordance with the playback order of the program chain in this program chain information, data is read from the optical disc to a buffer. Furthermore, the data which does not support playback, or the data pertaining to unselected audio or subtitle data is deleted from the buffer.

Description

technical field [0001] The present invention relates to a disc player for playing a digital versatile disc (DVD) or the like. Background technique [0002] Recently, disc player devices for playing compact discs (CDs), DVDs, etc. have become more and more popular. In such an optical disc playback device, the data playback speed is generally lower than the data reading speed of the optical disc, and data is intermittently read from the optical disc. Often optical drives are powered even before data has been read from the disc, wasting power. [0003] In order to solve this problem, in order to reduce power consumption, it has been proposed to perform power-saving control on the optical disc drive when no data is read from the optical disc. In the scheme disclosed in Japanese Patent Application Laid-Open No. 6-318359, once a predetermined amount of data is read from an optical disk, power-saving control such as stopping rotational drive is per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B19/02G11B20/10G11B27/00G06F1/32G11B7/005G11B19/00
CPCG11B2220/2562G11B2020/1074G11B2020/10759G06F1/3203G11B20/10527G11B27/309
Inventor 小岛政彦
Owner KK TOSHIBA
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