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Method for judging CD-disc breakup and playing CD-disc

A technology of optical discs and optical disc drives, which is applied in the direction of optical recording/reproduction, use of detectable carrier information, instruments, etc., which can solve the problem that the optical reading head cannot be positioned, the data cannot be detected correctly, and cannot be applied DVD disc format and other issues

Inactive Publication Date: 2009-10-28
SUNPLUS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, the above-mentioned U.S. patent checks the data on the optical disc when the disc is still, which will make the optical pickup head unable to be positioned at the correct position, and then the data in the lead-in area cannot be detected correctly; in addition, the above-mentioned U.S. patent The patent can only be applied to music discs (CD-DA, Compact DiscDigital Audio), and cannot be applied to the existing DVD disc format

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  • Method for judging CD-disc breakup and playing CD-disc
  • Method for judging CD-disc breakup and playing CD-disc
  • Method for judging CD-disc breakup and playing CD-disc

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Embodiment Construction

[0045] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0046] The invention proposes a method for judging the finality of an optical disc and a method for playing an unfinished optical disc. In this method, after starting the servo system, a mechanism for judging the finality of the optical disc is added to determine whether the optical disc is an unfinalized optical disc. After judging that the optical disc is an unfinished optical disc, a playback mechanism can be started to play the unfinalized optical disc. Therefore, the method proposed by the present invention can make the read-only optical disc player or optical disc player judge the finality of the optical disc, and after judging that the optical disc is an incomplete optical disc, use other playing methods instead, so that the read-only optical dis...

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Abstract

The invention discloses a method for judging the completion of an optical disc and playing the optical disc. The method of playing the optical disc includes: focusing and locking the optical disc; when the focusing is successful but the locking track fails, search whether there is recording data in the optical disc; Focus and lock the area, and judge whether there is a file system in the file information area; when there is no file system in the file information area, read the outermost data in the audio-visual data area, and find a file distribution data table; and, according to the file The distribution data table plays the audio-visual data stored in the audio-visual data area.

Description

technical field [0001] The invention relates to the optical disc playing technology, in particular to a method for judging the completion of the optical disc and playing the optical disc. Background technique [0002] In the existing optical disc specification, a complete optical disc includes a lead-in area, a lead-out area and a data area. When the optical disc drive starts to read the optical disc, it uses the lead-in area in the optical disc to perform focusing on and tracking on. After focusing and tracking on, the optical disc drive can read the data in the optical disc. The following uses a digital video disc (DVD, Digital Versatile Disc) as an example for illustration. [0003] figure 1 It is a schematic diagram of the data distribution structure of DVD in the prior art. like figure 1 As shown, the DVD disc includes a lead-in area 110, a data area 130 and a lead-out area 150, wherein the data area 130 includes a file system (File System) area 132, a menu system d...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B27/22G11B27/36G11B27/10G11B7/085
Inventor 张鹤继曾律嘉
Owner SUNPLUS TECH CO LTD