Sorts recognition method and device for digital multifunctional optical discs

A technology for disc types and judging devices, which is applied in optical recording/reproduction, data recording, and information recording on disks, etc., can solve problems such as easy misjudgment, and achieve the effect of increasing the probability

Active Publication Date: 2007-04-25
TIAN HLDG LLC
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0011] The purpose of the present invention is to overcome the defects existing in the existing methods for judging the types of digital versatile discs, and provide a new method for judging the types of digital versatile discs. The technical problem to be solved is to make it easy to misjudgment. Therefore, it is more suitable for practical use and has industrial utilization value

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  • Sorts recognition method and device for digital multifunctional optical discs
  • Sorts recognition method and device for digital multifunctional optical discs
  • Sorts recognition method and device for digital multifunctional optical discs

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Embodiment Construction

[0060] In order to further explain the technical means and effects adopted by the present invention to achieve the intended purpose of the invention, the specific implementation and structure of the method and device for judging the type of a digital versatile disc proposed according to the present invention will be described below in conjunction with the accompanying drawings and preferred embodiments. , method steps, features and effects thereof are described in detail as follows.

[0061] The present invention uses the frequency of the wobble signal of a digital versatile disc (DVD) to distinguish DVD-ROM (the following "ROM" stands for read-only memory, that is, read only memory) , DVD-, and DVD+ are three digital versatile discs. The following examples are given to illustrate the method and device for judging the type of digital versatile disc proposed by the present invention.

[0062] Different types of DVDs have different wobble signal frequencies. When the informatio...

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Abstract

The present invention relates to a method of judging the type of digital versatile disc and a device. The method includes the steps: setting relative parameters, and obtaining a wobble signal from the digital versatile disc, setting frequency removing factor, and removing frequency for the wobble signal by the frequency removing factor; then, calculating the frequency of the wobble signal after frequency removing taking the time that the main shaft motor of a disc player drives the digital versatile disc rotate for one circle as the unit time; and last, judging the type of the digital versatile disc based on the frequency of the wobble signal after frequency removing, thereby can avoid the former fault and improving the correct judging probability.

Description

technical field [0001] The invention relates to a method and device for judging the type of a digital multifunctional disc, in particular to a method and a device for judging the type of a digital multifunctional disc for distinguishing DVD-ROM, DVD-, and DVD+ discs. Background technique [0002] Digital Versatile Disc (referred to as DVD), which has become very popular nowadays, except for DVD-ROM which can only be used to read information (the following "ROM" stands for read-only memory, that is, read only memory) In addition, there are also types that can be used to burn information. DVDs that can be used for burning information are divided into two types: DVD- and DVD+ due to different specifications. At present, most of the DVD disc drives are compatible with various specifications, so it becomes an important technology to judge the type of the disc inserted by the user. [0003] The current method is to use the position information contained in the pre-groove wobble ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B19/12G11B7/00
CPCG11B19/12
Inventor 张肇峰卢志春
Owner TIAN HLDG LLC
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