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:
Jun. 10, 2003
Filed:
Feb. 07, 2001
James Joseph Anthony McCormack, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention pertains to a control circuit ( ) for a radiation source ( ). The circuit comprises means ( ) for generating an error signal (P ) which is indicative for a difference between a measured average value of the output power of the radiation source ( ) and a desired average value (P ) of the output power of the radiation source. The circuit further comprises combining means ( ) for generating a control signal (Sout) for the radiation source ( ) in response to said error signal (P ) and to an information signal (S ) for modulating the radiation source. The combining means comprise first means ( ) for modifying the information signal by a multiplicative factor &ggr; which is dependent on the error signal, and second means ( ) for modifying the information signal by an additive factor &sgr; which is dependent on the error signal.