Write adjustment method

Details Write adjustment method Write adjustment method

2007-06-06

2010-02-09

Feild, Joseph H (Department: 2627)

Dynamic information storage or retrieval

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

Mechanism control by the control signal

Reexamination Certificate

active

07660219

ABSTRACT:
A write adjustment method adjusts recording power, recording time, and recording position of a recorder. The recorder includes a light detecting chip to receive a reflected light signal and generate a recording detection signal to a high pass filter. The high pass filter receives the recording detection signal and outputs a filtering signal. The write adjustment method includes writing first short period data to a disk, acquiring a reference voltage of the high pass filter according to a maximum value and a minimum value of the filtering signal, writing first mixing period data to the disk according to a plurality of predetermined recording times, acquiring a first maximum value and a first minimum value according to the filtering signal and adjusting and determining a first recording power of the recorder when a target value is achieved according to the first maximum value, the first minimum value and the reference voltage of the high pass filter.

REFERENCES:
patent: 5303217 (1994-04-01), Bakx et al.
patent: 5559785 (1996-09-01), Honda et al.
patent: 6646968 (2003-11-01), Miyaoka
patent: 7391687 (2008-06-01), Toshiaki et al.

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