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:
Jan. 22, 2008
Filed:
Dec. 28, 2006
Cyrus Bamji, Fremont, CA (US);
Khaled Salama, Troy, NY (US);
Cyrus Bamji, Fremont, CA (US);
Khaled Salama, Troy, NY (US);
Canesta, Inc., Sunnyvale, CA (US);
Abstract
Dynamic range of a differential pixel is enhanced by injecting, synchronously or asynchronously, a compensating offset (Δ) into a differential signal capacitor whenever magnitude of the differential signal across the capacitor exceeds a predetermined value. Positive and negative magnitudes of Δneed not be equal. The number (N) of Δoffsets made is counted. Effective differential signal capacitor voltage V(t)=Vo±N·Δ, where Vo is capacitor voltage. In other embodiments magnitude of Δin a sequence of compensations can differ, and the sum total of compensations in recorded. Differential pixel signal/noise ratio is increased by dynamically maximizing operational amplifier gain Afor each differential pixel.