Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Reexamination Certificate
2007-12-11
2007-12-11
Korzuch, William R. (Department: 2627)
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
C369S053180, C369S053330
Reexamination Certificate
active
10535468
ABSTRACT:
A method is described for setting an optimum recording power level for recording information on an optical record carrier. First a series of test patterns is written on the record carrier with a different recording power. On reading the test patterns, the jitter values of each read signal is determined. The jitter as a function of recording power is approximated with two linear functions. The optimum recording power level for the record carrier is derived from intersection of the functions. The invention relates also to a device arranged to perform the method. The invention further relates to an optical record carrier comprising the optimum recording power as determined by the method according to the invention.
REFERENCES:
patent: 5740149 (1998-04-01), Iwasaki et al.
patent: 2002/0105874 (2002-08-01), Matsumoto
patent: 2005/0243670 (2005-11-01), Kakimoto et al.
Agustin Peter Vincent
Belk Michael E.
Korzuch William R.
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