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. 17, 2007
Masayoshi Sugino, Anjo, JP;
Noriyasu Amano, Gamagori, JP;
Shinsuke Takakura, Kariya, JP;
Denso Corporation, Kariya, Aichi-pref., JP;
Nippon Soken, Inc., Nishio, Aichi-pref., JP;
Abstract
An oscillation-type state measuring apparatus has an oscillation-type sensor, a reference oscillation signal generating circuit for producing reference oscillation signals, a beat signal generating circuit for generating beat signals having a beat frequency by synthesizing the sensor oscillation signals and the reference oscillation signals, a counter for measuring a period of the beat signals, and a physical quantity calculation circuit for calculating a physical quantity from the period of the beat signals and from the period of the reference oscillation signals. The reference oscillation signal generating circuit varies the frequency of the reference oscillation signals, and the physical quantity calculation circuit calculates the physical quantity based on the varied period of the reference oscillation signals.