The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7023772 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 04, 2006

Filed:

Aug. 22, 2003
Applicant:

Tetsumasa Yonemitsu, Kanagawa, JP;

Inventor:

Tetsumasa Yonemitsu, Kanagawa, JP;

Assignee:

Sony Corporation, Tokyo, JP;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

At STthe process identifies whether apparatus identification information of an optical recording apparatus is recorded in an optical recording medium and, if it is not recorded, if the recorded information does not agree with apparatus identification information of the optical recording apparatus, or if they agree but information validation conditions are not met, it performs processing of STand STto perform power calibration processing of laser light and calculate power set values. At STthe process records power calibration information and the apparatus identification information in the recording medium. If the information agrees and the information validation conditions are met, the process performs processings of STand STto calculate power set values using already created information. At STthe process sets laser light power based on the power set values. If a recording medium, which has once been used, is used, recording of a signal can start immediately in a condition where the laser light power is optimized.


Find Patent Forward Citations

Yonemitsu, Tetsumasa. (2006). Laser power setting method and optical recording device (U.S. Patent No. 7023772). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7023772

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