Recording power decision method and device

Abstract

A recording power determination method for determining a recording power of an optical beam for recording data on an information storage medium includes the steps of recording test data on the information storage medium at a plurality of test recording powers; reading the test data recorded at each test recording power, generating a signal, and measuring a modulation factor of the signal corresponding to each test recording power; calculating a product of an n'th power of each test recording power and the corresponding modulation factor, thereby obtaining a plurality of products corresponding to the plurality of test recording powers, where n is a value of exponent and is a real number other than 1; calculating a first recording power based on the correlation between the plurality of test recording powers and the plurality of products; and calculating the recording power based on the first recording power.

Description

technical field [0001] The present invention relates to a recording power determination method and a recording power determination device for determining recording power when recording data on an information recording medium. Background technique [0002] An optical disc is known as an information recording medium for recording data. The optical disc device irradiates a light beam onto the optical disc to record data, and reproduces the data recorded on the optical disc. Even in the case where optical discs or optical disc devices are manufactured in the same manner, there are individual differences in optical discs or optical disc devices. Therefore, there is a problem that sometimes data cannot be properly recorded on the optical disc due to individual differences, and data recorded on the optical disc cannot be properly reproduced. data in . [0003] As a known method for preventing such a problem, when an optical disc is loaded, an appropriate recording power is determ...

AI Technical Summary

Problems solved by technology

Even in the case where optical discs or optical disc devices are manufactured in the same manner, there are individual differences in optical discs or optical disc devices. Therefore, there is a problem that sometimes data cannot be properly recorded on the optical disc due to individual differences, and data recorded on the optical disc cannot be properly reproduced. data in

Therefore, in the case of following the conventional second recording power determination method, the recording power determination unit 708 cannot uniquely determine an appropriate recording power

In addition, when the recording power determination unit 708 determines the recording power higher than the appropriate recording power, the optical disc will deteriorate quickly. In addition, when the recording power determination unit 708 determines the recording power lower than the appropriate recording power , cannot properly record data in the disc

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