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:
Jul. 13, 2010
Filed:
Oct. 05, 2007
John C. Stevens, Northridge, CA (US);
Adam O. Lee, Portland, OR (US);
Stefan C. Lauxtermann, Camarillo, CA (US);
Atul Joshi, Thousand Oaks, CA (US);
John C. Stevens, Northridge, CA (US);
Adam O. Lee, Portland, OR (US);
Stefan C. Lauxtermann, Camarillo, CA (US);
Atul Joshi, Thousand Oaks, CA (US);
Teledyne Licensing, LLC, Thousand Oaks, CA (US);
Abstract
An imaging system includes a row and column array of active pixels, each having an associated pitch. In response to respective control signals, each pixel outputs a reset level which includes noise components, or a signal level which includes signal and noise components. Multiple column buffers, each having a pitch equal to or less than that of a pixel, convey the outputs of respective pixel columns to a bus line. Each buffer comprises 'odd' and 'even' S&H/CDS circuits, which process the pixel outputs of odd and even rows, respectively. Each S&H/CDS circuit subtracts pixel reset level from signal level to produce an output in which correlated noise is suppressed. Each column buffer includes a buffer amplifier which conveys the output to the bus line. A gain amplifier separate from the column buffers is coupled to the bus line such that it amplifies the outputs of a multiple column buffers.