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:
Apr. 18, 1995
Filed:
Feb. 24, 1993
Jeffrey Perry, Cupertino, CA (US);
Richard J Pittaro, San Carlos, CA (US);
Other;
Abstract
A method and apparatus for performing dark signal correction on a photoelectric conversion device. A flow of light to the device is alternately conducted and interrupted. The device generates an intermixed signal while the flow of light is conducted to the device, the intermixed signal including a desired signal intermixed with an unwanted dark signal. The device generates a dark signal alone while the flow of light to the device is interrupted. The dark signal alone is filtered to produce a filtered dark signal. The filtered dark signal is subtracted from the intermixed signal to produce a corrected signal, which is representative of the desired signal.