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:
Sep. 27, 2011
Filed:
Nov. 23, 2010
Hong Zhu, Shanghai, CN;
Jim Yang, Shanghai, CN;
Abstract
A system is provided for determining a color using a CMOS image sensor. The system includes an input port for receiving a user command. The system further includes an image sensor, an optical device that forms an image on the image sensor, and a processor. The image sensor includes an n-type substrate and a p-type epitaxy layer overlying the n-type substrate. The image sensor includes a control circuit that applies a first voltage on the n-type substrate to obtain a first output. The control circuit applies a second voltage on the n-type substrate to obtain a second output. The control circuit also applies a third voltage on the n-type substrate to obtain a third output. The p-type epitaxy layer includes a silicon germanium material. The image sensor additionally includes an epitaxy layer interposed between the n-type substrate and the p-type epitaxy layer.