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:
Jun. 28, 2016
Filed:
Sep. 11, 2014
Applicant:
Varian Medical Systems, Inc., Palo Alto, CA (US);
Inventors:
Arundhuti Ganguly, San Jose, CA (US);
Pieter Gerhard Roos, Sandy, UT (US);
Assignee:
VARIAN MEDICAL SYSTEMS, INC., Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/3745 (2011.01); H04N 5/355 (2011.01); H04N 5/359 (2011.01);
U.S. Cl.
CPC ...
H04N 5/3745 (2013.01); H04N 5/359 (2013.01); H04N 5/35563 (2013.01);
Abstract
An imaging system includes a plurality of pixel circuits each having a photodiode, a biasing circuit and a charge-to-voltage converter. The photodiode is configured to generate charges in response to light or radiation. The biasing circuit is configured to provide a constant bias voltage across the photodiode so as to drain the charges generated by the photodiode. The charge-to-voltage converter is configured to accumulate the charges drained by the biasing circuit and convert the accumulated charges into a corresponding output voltage.