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:
Aug. 24, 2004
Filed:
Feb. 15, 2001
Junji Fujino, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A photosensor-amplifier device has a photoelectric conversion circuit that converts an optical signal into an electric signal, a first electrode by way of which the electric signal is extracted from the photoelectric conversion circuit, a second electrode that is not directly connected to the electric signal, an amplifier circuit that has a first input terminal and a second input terminal and that amplifies and then outputs the difference between the electric signals fed to the first and second input terminals, a first wire that connects the first electrode to the first input terminal, and a second wire that connects the second electrode to the second input terminal. This structure prevents noise signals from being induced in a signal path, such as a wire, connecting the photoelectric conversion circuit to the amplifier circuit, and thereby prevents malfunctioning of the device as experienced in conventional photosensor-amplifier devices.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile