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. 07, 2006
Filed:
Jun. 10, 2004
Xinqiao Liu, San Jose, CA (US);
David D. Wen, Los Altos, CA (US);
Anh N. VU, Saratoga, CA (US);
Steven Kiyoshi Onishi, San Jose, CA (US);
Charles J. Arduini, Santa Clara, CA (US);
Xinqiao Liu, San Jose, CA (US);
David D. Wen, Los Altos, CA (US);
Anh N. Vu, Saratoga, CA (US);
Steven Kiyoshi Onishi, San Jose, CA (US);
Charles J. Arduini, Santa Clara, CA (US);
Fairchild Imaging, Milpitas, CA (US);
Abstract
An imaging array having a CCD imaging array that includes a plurality of pixels that accumulate charge when exposed to light and a readout amplifier is disclosed. The readout amplifier includes an operational amplifier having an input and an output port and a feedback capacitor connecting the input and output ports and a variable impedance path between the input and output ports, the path having an impedance controlled by a reset signal. A reset signal generator generates the reset signal in three sequential phases in which the path between the input and output ports has three impedance values to provide a starting voltage at the amplifier input prior to the measurement of charge from each pixel that has reduced noise.