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:
Dec. 11, 2007
Filed:
May. 14, 2001
Nanette C. Jensen, Meridian, ID (US);
Douglas G. Keithley, Boise, ID (US);
Virginia K. Capps, Boise, ID (US);
David G. Bohan, Eagle, ID (US);
Nanette C. Jensen, Meridian, ID (US);
Douglas G. Keithley, Boise, ID (US);
Virginia K. Capps, Boise, ID (US);
David G. Bohan, Eagle, ID (US);
Other;
Abstract
A system and method are provided for determining a light output of a light emitting diode (LED) in a scanner. The system includes a processor circuit to execute current control logic to obtain an optimum light output from the LED. The current control logic repeatedly applies increasing or decreasing currents to the LED until a saturation point is identified. This may be accomplished, for example, by comparing two measures of the light output of the LED for two different currents applied to the LED. When a difference equaling a predetermined threshold between the two measures is detected, then the saturation point is identified.