Optical recording apparatus and method for optimizing...

Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal processing for controlling recording light...

Reexamination Certificate

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C369S059120, C369S053260

Reexamination Certificate

active

07986600

ABSTRACT:
An exemplary method for optimizing a recording signal of an optical recording apparatus to record data onto a disc, the recording signal having a first pulse-width parameter, the method includes selecting an initial value of the first pulse-width parameter; generating adjusted values based on the initial value to record test data onto the disc respectively; measuring mark lengths of lands; determining average lengths of the mark lengths of lands; determining differences between the average lengths and a predetermined standard length; linear curve fitting the adjusted values and the differences employing the following linear curve fitting equation: Y=AX+B to obtain the constants A and B, wherein X represents the adjusted values, Y represents the differences; determining and storing an optimum value of the first pulse-width parameter to be used for recording the data onto the disc, this optimum value equals to −B/A. An optical recording apparatus is also provided.

REFERENCES:
patent: 6339579 (2002-01-01), Kamioka et al.
patent: 7196996 (2007-03-01), Matsuda
patent: 7215617 (2007-05-01), Ando et al.
patent: 2005/0243670 (2005-11-01), Kakimoto et al.
patent: 2006/0187788 (2006-08-01), Kakimoto et al.
patent: 2006/0256690 (2006-11-01), Sekiguchi et al.
patent: 1308928 (2005-09-01), None

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