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Laser optic disk player judging method and laser optic disk player

A laser video disc and video disc player technology, applied in the audio and video field, can solve problems such as disc discrimination, and achieve the effects of reducing parameter requirements, improving disc discrimination accuracy, and expanding the thickness range of discs

Inactive Publication Date: 2008-06-04
TCL TECH ELECTRONICS (HUIZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The object of the present invention is to provide a method for judging a disc by a laser disc player and a laser disc player using the method, aiming at solving the problem of judging a disc by a laser disc player

Method used

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  • Laser optic disk player judging method and laser optic disk player
  • Laser optic disk player judging method and laser optic disk player
  • Laser optic disk player judging method and laser optic disk player

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Embodiment Construction

[0044] The basic principle of the present invention is that when setting the threshold value of disc judging time, it is not determined according to the standard disc reading cycle, but according to the time spent by the laser head of each disc player from contacting the disc medium to reading the content of the disc. The actual time T1 (hereinafter referred to as the actual disc reading cycle) is determined, and the error caused by the laser head and motor drive is not considered in the threshold value of the determined disc judgment time. According to this threshold value, it is judged whether it is a DVD disc or a disc. When using CD discs, there will be no indistinguishable problems caused by the intersection of the reading cycles of DVD discs and CD discs.

[0045] After the production and assembly of each disk drive is completed, its laser head and motor drive have been determined, and the parameter error of its laser head and motor drive has also been determined. The er...

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Abstract

The invention discloses a method for judging dish by a laser videodisk. The method includes the following steps: a. the laser videodisk detects the real dish-reading period T1 for reading the testing dish, wherein the real dish-reading period T1 is the time used by the light head of the laser videodisk from contacting a medium layer of the testing dish to moving to a data layer; b. the laser videodisk sets a time threshold value for judging dish in accordance with the real dish-reading period T1 and stores the time threshold value for judging dish in a storage. The technical proposal of the invention greatly improves the accuracy for judging dish and automatically adjusts the standalone software to the best state, thereby improving the dish-reading speed as fast as possible. Furthermore, the scheme of the invention is simple and easy to carry out, and is suitable for requirements of large-scale production and eases the requirements for parameters of key components. The invention is advantageous for improving yield of component production and reducing purchase cost. In addition, the invention can expand the dish thickness range compatible by a single dish drive.

Description

technical field [0001] The invention belongs to the technical field of audio and video, and in particular relates to the technology of judging discs of laser video disc players. Background technique [0002] Laser video disc players (such as red-ray DVD player / recorder, Blu-ray DVD or HD DVD (High-Density & High-Definition high-density and high-resolution DVD) use digital compression technology to burn images, audio and other data on the disc, At the same time, it can also be used to play discs that store image and audio data. [0003] DVD discs, CDs (or VCDs) and other optical storage discs are all recorded on the discs with "signal pits" representing "0" or "1" binary numbers, and the laser in the optical head of the laser video disc player (disc player) The laser emitted by the diode is irradiated on the "signal pit", and the laser reflected from the "signal pit" carries the binary data represented by the "signal pit". [0004] DVD discs and CD discs have the same appea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B19/12G11B7/004
Inventor 宋永红何爱民牛力扬
Owner TCL TECH ELECTRONICS (HUIZHOU) CO LTD
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