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:
Jan. 08, 2008
Filed:
Mar. 10, 2004
Theodore D. Rees, Mountain View, CA (US);
Alexander Fairgrieve, Menlo Park, CA (US);
Bill R. Tang, San Jose, CA (US);
Barry Harvey, Los Altos, CA (US);
Yang Zhao, Fremont, CA (US);
Theodore D. Rees, Mountain View, CA (US);
Alexander Fairgrieve, Menlo Park, CA (US);
Bill R. Tang, San Jose, CA (US);
Barry Harvey, Los Altos, CA (US);
Yang Zhao, Fremont, CA (US);
Intersil Americas Inc., Milpitas, CA (US);
Abstract
Optical pick-up units and laser drivers are disclosed, which can be used in various types of information recording/reproducing apparatuses, such as, but not limited to, DVD and CD drives, DVD camcorders, and DVD video recorders. A laser driver integrated circuit (LDIC) includes an automatic power controller, a running optical power controller, and a write strategy generator. The LDIC can be part of a chip-set, to be located on an optical pick-up unit (OPU). The chip-set can also include a power monitor integrated circuit (PMIC) to monitor the laser diode, and a photo-detector integrated circuit (PDIC) to detect light produced by the laser diode. The PMIC and the PDIC each include their own offset, gain and sample-and-hold circuitry.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile