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, 2012
Filed:
Jan. 25, 2010
Michael P. Coulson, Oxford, GB;
Hajime Washio, Nara, JP;
Benjamin J. Hadwen, Oxford, GB;
Sunay Shah, Oxford, GB;
Michael P. Coulson, Oxford, GB;
Hajime Washio, Nara, JP;
Benjamin J. Hadwen, Oxford, GB;
Sunay Shah, Oxford, GB;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An ambient light sensor includes a first stack of at least two photodiodes, wherein a cathode of one of the at least two photodiodes is electrically connected to an anode of another of the at least two photodiodes. The ALS further includes a bias source for providing a bias voltage to the first stack, and at least one switch electrically connected to the first stack. The at least one switch is operative to periodically apply the bias voltage to and remove the bias voltage from the first diode stack.