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:
Nov. 20, 2012
Filed:
Jun. 13, 2012
Wei Zheng, Los Gatos, CA (US);
Hsin-chih Tai, San Jose, CA (US);
Yin Qian, Milpitas, CA (US);
Hongjun LI, San Jose, CA (US);
Howard E. Rhodes, San Martin, CA (US);
Wei Zheng, Los Gatos, CA (US);
Hsin-Chih Tai, San Jose, CA (US);
Yin Qian, Milpitas, CA (US);
Hongjun Li, San Jose, CA (US);
Howard E. Rhodes, San Martin, CA (US);
OmniVision Technologies, Inc., Santa Clara, CA (US);
Abstract
An imaging system capable of black level calibration includes an imaging pixel array, at least one black reference pixel, and peripheral circuitry. The imaging pixel array includes a plurality of active pixels each coupled to capture image data. The black reference pixel is coupled to generate a black reference signal for calibrating the image data. Light transmitting layers are disposed on a first side of a pixel array die including the imaging system and cover at least the imaging pixel array and the black reference pixel. A light shielding layer is disposed on the first side of the pixel array die and covers a portion of the light transmitting layers and the black reference pixel without covering the imaging pixel array.