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.:
Date of Patent:
Aug. 17, 2004
Filed:
Jun. 28, 2002
Tsuneo Fujiwara, Nabari, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A reproduction power control device includes: an adapter/equalizer for adapt and equalizing a digital reproduction signal to a predetermined frequency characteristic so a post-equalization reproduction signal; and a reproduction power control unit for, based on an equalization amount in the adaptation and equalization by the adapter/equalizer, detecting an error between a current reproduction power and an optimal reproduction power and controlling a reproduction power of laser light so as to bring the error closer to 0. In this manner, it becomes possible to offer a reproduction power control method, a reproduction power control device, and a record reproducing device incorporating the same, capable of reproduction power control without reducing the user area on a recording medium.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile