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. 30, 2013
Filed:
Oct. 21, 2010
Tsuguto Maruko, Tokyo, JP;
Kouhei Tanaka, Kanagawa, JP;
Tsuguto Maruko, Tokyo, JP;
Kouhei Tanaka, Kanagawa, JP;
Oki Semiconductor Co., Ltd., Tokyo, JP;
Abstract
A bias potential generating circuit includes a clock supply circuit that generates a clock signal having a predetermined frequency; a rising sine wave generating circuit that generates a rising wave form signal having a wave form of a rising portion of a sine wave; a ΔΣ conversion circuit that generates a pulse width modulation signal by pulse width modulating the rising wave form signal; a first resistor, one end connected to a reference potential input terminal of an operational amplifier; a second resistor, one end connected to the first resistor and to the reference potential input terminal of the operational amplifier, and the other end being grounded; and a switch connected to a power supply and to the other end of the first resistor, the switch being turned ON and OFF by the pulse width modulation signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile