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Determination method of optimum recording power for optical disk recording apparatus

A technology for recording power and optical disc recording, applied in optical recording/reproduction/erasing methods, optical recording heads, optical recording systems, etc., can solve the problem of uneven thickness of recording media, uneven recording sensitivity, and inability to set the best Recording power and other issues

Inactive Publication Date: 2005-11-30
LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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Problems solved by technology

[0009] At this time, the recording power selected by the optimal power control program before recording has the disadvantage that it is caused by differences in medium characteristics such as disc deflection, uneven thickness of the recording medium, or uneven thickness of the disc. Changes in recording sensitivity, or failure to set appropriate optimum recording power for some new recording media

Method used

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  • Determination method of optimum recording power for optical disk recording apparatus
  • Determination method of optimum recording power for optical disk recording apparatus
  • Determination method of optimum recording power for optical disk recording apparatus

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Embodiment Construction

[0019] figure 1 It is a flow chart of the method for determining the optimum recording power of the optical disc recording device of the present invention;

[0020] refer to figure 1 Illustrate the method for determining the optimal recording power of the optical disc recording device according to the present invention. At first, in the optimal power control (OPC) execution area, a recording test is performed on as many media as possible, and the basic recording format is respectively set (step 110). Well documented properties.

[0021] The above-mentioned basic recording format defines a bit recording pulse from 3 to 11T and an overdrive (OVER DRIVE) amplitude at any time in order to perform accurate recording on all optical discs.

[0022] Then, the recording power range and step are respectively set according to the test results of a plurality of recording media (step 111).

[0023] For example, the recording power range of 1 is 2.0~9.0mw, the step is 0.5mw, the recordin...

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Abstract

The invention relates to an optimum record power determination method of optical disc recording device which comprises, proceeding the testing recording from the initialized record, calculating the beta value of each recording power of the testing record, calculating the beta value changed value corresponding to the change of the recording power, initializing the minimum beta value corresponding to recording power into the target beta value, and initializing the optimum recording power corresponding to the target beta value, and beginning to record.

Description

(1) Technical field [0001] The present invention relates to the field of optical disc recording, especially when the optimal recording power is preset before starting recording, the target β and recording method are not preset, and the corresponding recording power variation is determined by using the relationship between β and jitter The power when the β variation of β is the smallest, thereby determining the minimum power, so that although the same code is used, the recording medium is different, or a method for setting the optimum recording power for some optical disc recording devices such as new recording media. (2) Background technology [0002] The optical disc is a recording medium that has become popular with the popularization of the CD, and recently, with the appearance of the large-capacity DVD, its expectations are also increasing. . [0003] Under normal circumstances, according to whether the CD can be recorded or not, it is divided into CD-Read only memory, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/0045G11B7/1263
Inventor 崔昇奎
Owner LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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