Optical disc drive

Abstract

To obtain optimum conditions for writing data on the disc. Provided is an optical disc drive for writing / reading data on / from a loaded optical disc medium comprising: a pickup for writing / reading dataon / from the optical disc medium using laser light; and a controller for controlling an operation of the optical disc drive. The controller judges whether the loaded optical disc medium is unrecorded;records a first piece of data on a test area of the optical disc medium in a case where the loaded optical disc medium is judged to be unrecorded; determines optimum output power for recording the data by reproducing the first piece of data; records a second piece of data on the test write area using the determined optimum output power; and adjusts focus balance by reproducing the second piece ofdata.

Description

technical field [0001] The present invention relates to an optical disc device, in particular to a technology for adjusting recording power and focus balance when storing information. Background technique [0002] In optical disc devices that record information on optical discs such as CDs, DVDs, and BDs, adjustment of focus balance has been a problem. In a conventional optical disc device, management information is recorded in a DIZ (Disk Identification Zone) before focus balance adjustment, and the focus balance is adjusted at the recorded position. [0003] Furthermore, a method of detecting arbitrary data recorded in a PCA (Power Control Area) and then performing focus balance adjustment at that position has been proposed (for example, refer to Patent Documents 1 and 2). [0004] As described above, in the conventional optical disc device, since the management information is recorded in the DIZ before the focus balance adjustment, the management information cannot be pr...

AI Technical Summary

Problems solved by technology

Furthermore, in the optical disc device described in Patent Document 2, the data for focus balance is recorded before PCA, so it is not possible to adjust the recording power before adjusting the focus balance.

[0006] Therefore, there is a problem that the data for adjusting the focus balance cannot be written with an appropriate power.

Specifically, writing data with strong power will damage the disc, and writing data with weak power will cause the problem of improper focus balance adjustment results

[0007] In particular, the number of manufacturers of optical disk media increases, and the characteristics of optical disk media vary widely.

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