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:
Apr. 14, 2009
Filed:
Sep. 07, 2005
Kinana Hussain, Granada Hills, CA (US);
Adam Wu, Thousand Oaks, CA (US);
Balagopal Mayampurath, Camarillo, CA (US);
Lawrence Choi, Downey, CA (US);
Kinana Hussain, Granada Hills, CA (US);
Adam Wu, Thousand Oaks, CA (US);
Balagopal Mayampurath, Camarillo, CA (US);
Lawrence Choi, Downey, CA (US);
Other;
Abstract
An automatic power control circuit for a laser driver includes precharge circuitry to precharge inputs to a comparator receiving an indication of laser output power, for example from a monitor photodiode. The precharge circuitry can be selectively activated when a laser driven by the laser driver is operating in burst mode, as opposed to operating in continuous mode. In addition, a digital up-down counter may be used to increase or decrease a digital value used to set a bias level for the laser, with the digital up-down counter counting up if the comparator indicates the laser output is too low and counting down if the comparator indicates the laser output is too high.