Method of setting optimum recording power in optical...

Details Method of setting optimum recording power in optical... Method of setting optimum recording power in optical...

2007-12-25

2007-12-25

Hindi, Nabil (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S047500

Reexamination Certificate

active

10899071

ABSTRACT:
A method of and apparatus for setting optimum recording power using characteristic values calculated inversely from recording power that allows a recordable optical disc to have a minimum value of jitter. The method includes setting a first optimum recording power value using characteristic values of an RF signal detected from an optical disc, and recording a predetermined pattern on the optical disc while changing the first recording power value; measuring a value of jitter according to the recorded pattern, and setting a recording power value when a minimum value of jitter is obtained as a second optimum recording power value; inversely calculating the characteristic values from the second optimum recording power value; and setting a third optimum recording power value using the inversely calculated characteristic values. Accordingly, it is possible to improve recording and reproducing qualities of optical discs that have the same time information and ID but their writing/reading speeds and media are different.

REFERENCES:
patent: 6480448 (2002-11-01), Kawano et al.
patent: 6577571 (2003-06-01), Takeda et al.
patent: 7023773 (2006-04-01), Park
patent: 2000-137918 (2000-05-01), None
patent: 000055628 (2000-09-01), None
patent: 2002-21006 (2002-03-01), None
Notice to Submit Response issued by the Korean Intellectual Property Office in Application No. 10-2003-0062178 on Jul. 25, 2005.

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