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:
Nov. 04, 2014
Filed:
Feb. 12, 2010
Applicants:
Takeshi Uemura, Osaka, JP;
Keisuke Kuroda, Osaka, JP;
Inventors:
Takeshi Uemura, Osaka, JP;
Keisuke Kuroda, Osaka, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/04 (2006.01); H05K 3/30 (2006.01); G01C 19/5726 (2012.01); G01C 19/5614 (2012.01); G01C 19/5776 (2012.01); H03B 5/32 (2006.01);
U.S. Cl.
CPC ...
G01C 19/5726 (2013.01); G01C 19/5614 (2013.01); G01C 19/5776 (2013.01); H03B 5/32 (2013.01);
Abstract
An oscillator circuit includes an oscillator, a filter that filters a monitoring signal output from the oscillator and outputs the filtered signal, a driver that amplifies the filtered signal to generate a driving signal, and a controller operable to control a passing characteristic of the filter based on the monitoring signal. The oscillator performs a vibration while being driven by the driving signal, and outputs the monitoring signal according to the vibration. This oscillator circuit allows the oscillator to vibrate stably.