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. 14, 1998
Filed:
Dec. 11, 1995
Satoshi Noda, Ebina, JP;
Fuji Xerox, Co. Ltd., Tokyo, JP;
Abstract
An image input apparatus capable of reliably reducing random noise and switching noise arising during a dummy pixel period using a simple circuit configuration and providing a high-quality video signal without horizontal lines. The image input apparatus is provided with a clamping circuit made up of a capacitor for feeding an analog image signal supplied from a CCD solid-state image pickup element via a first amplifier to a second amplifier through an alternating-current link, a reference voltage source for generating a predetermined reference voltage VR, and a first switch for effecting switching during the dummy pixel period of the CCD solid-state image pickup element. The clamping circuit is further provided with a resistor disposed between the capacitor and the second amplifier, and a second switch for selectively bridging across the resistor 152. This second switch is complimentarily activated in relation to the operation of the first switch.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile