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. 05, 2003
Filed:
Nov. 16, 2001
Kenji Nemoto, Sagamihara, JP;
Asahi Kasei Microsystems Co., Ltd., Tokyo, JP;
Abstract
This temperature-compensated crystal oscillator includes: a temperature sensor an analog type temperature compensating section a digital type temperature compensating section an adder circuit and a voltage controlled crystal oscillating circuit The analog type temperature compensating section and the digital type temperature compensating section each generate temperature compensation voltages based on an input voltage corresponding to the temperature detected by the temperature sensor . Both of these temperature compensation voltages are added to each other by the adder circuit and the resultant added voltage is applied to a voltage control terminal of the voltage-controlled crystal oscillating circuit Thereby, an oscillation frequency of the voltage-controlled crystal oscillating circuit is stabilized, resulting in realization of the temperature compensation of a crystal resonator
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile