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:
May. 13, 2008
Filed:
Jan. 19, 2005
Applicants:
Shoji Yokoi, Nagoya, JP;
Yoshihiro Kobayashi, Komagane, JP;
Masayuki Takahashi, Nasushiobara, JP;
Inventors:
Assignees:
NGK Insulators, Ltd., Nagoya, JP;
Seiko Epson Corporation, Shinjuku-Ku, JP;
Nippon Precision Circuits Inc., Koto-Ku, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A detection circuithas a unitfor inputting a signal to be detected by synchronized wave detection, a unitfor inputting a standard signal for the signal to be detected and a unitfor inputting an offset signal applied on the signal to be detected. The offset signal is superimposed on the signal to be detected, which is then subjected to synchronized wave detection based on the standard signal.