Method and apparatus for recording data in an optical disk...

Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal

Reexamination Certificate

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Details

C369S047520, C369S047530, C369S053180, C369S053260, C369S059110

Reexamination Certificate

active

07952968

ABSTRACT:
A method and apparatus for recording data on an optical disk calculates an optical power at a first recording speed, compares the calculated optical power to a predetermined value, and then determines whether to apply the first recording speed based on a result of the comparison. The optical power at the first recording speed is calculated based on a reference optical power and a measured optical power, and the predetermined value may correspond to the maximum allowable power of a laser pickup. The method and apparatus may be used to control the speeding, timing, and/power of a data recording operation, as well as to compensate for temperature variations and/or power margins of one or more circuits in an optical disk device.

REFERENCES:
patent: 2002/0024903 (2002-02-01), Sato
patent: 2002/0064110 (2002-05-01), Sato
patent: 2002/0141308 (2002-10-01), Matsumoto
patent: 2003/0036861 (2003-02-01), Matsumoto
patent: 2003/0072235 (2003-04-01), Naoi et al.
patent: 2003/0086346 (2003-05-01), Fukumoto
patent: 2005/0259537 (2005-11-01), Kim
patent: 1700312 (2005-11-01), None
patent: 1326239 (2003-07-01), None
patent: 1870882 (2007-12-01), None
patent: 2002304729 (2002-10-01), None
patent: 2006114166 (2006-04-01), None
European Search Report dated Mar. 31, 2008.
Chinese Office Action dated May 22, 2009 with translation.

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