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:
May. 28, 2013
Filed:
Jan. 25, 2011
Dimitrios Katsis, Emeryville, CA (US);
Barry Concklin, San Jose, CA (US);
Daryl Chamberlin, San Jose, CA (US);
Peter J. Mole, St. Albans, GB;
Dimitrios Katsis, Emeryville, CA (US);
Barry Concklin, San Jose, CA (US);
Daryl Chamberlin, San Jose, CA (US);
Peter J. Mole, St. Albans, GB;
Intersil Americas Inc., Milpitas, CA (US);
Abstract
Embodiments of the present invention relate to methods and circuits for use with a system including a light emitting element (e.g., a laser diode or light emitting diode) that is driven by a current produced by a current output digital-to-analog converter (DAC), wherein the light emitting element or the DAC is powered by a supply voltage produced by a voltage supply. In accordance with an embodiment, a measure indicative of a voltage at an output of the DAC is obtained, wherein the voltage at the output of the DAC is indicative of a voltage headroom available for the DAC. The measure indicative of the voltage at the output of the DAC is compared to one or more predetermined references, and the supply voltage is controlled based on the comparison(s).