Optical disk apparatus and test writing method

Details Optical disk apparatus and test writing method Optical disk apparatus and test writing method

2011-08-23

2011-08-23

Dinh, Tan X (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

C369S044320

Reexamination Certificate

active

08004941

ABSTRACT:
Test writing is executed while skipping areas where deviations are present on an optical disk to thereby improve accuracy and reliability of an optimum recording condition to be derived. A deviation detecting unit detects the deviations of a guide groove on the optical disk on the basis of a fluctuation amount of a focus error signal or a tracking error signal, and registers information of the detected deviations onto a memory. A test writing processing unit refers to the memory, and records and reproduces a test signal while skipping the areas where the deviations are detected.

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