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. 23, 2010
Filed:
Mar. 30, 2006
Takamoto Watanabe, Nagoya, JP;
Sumio Masuda, Tokyo, JP;
Takamoto Watanabe, Nagoya, JP;
Sumio Masuda, Tokyo, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A radio wave timepiece A and a quadrature detection device for executing a quadrature detecting method are disclosed including a receiving antennafor receiving a carrier wave of a long wave standard radio wave on which time information is multiplexed, a quadrature detection circuitfor performing quadrature detection of the carrier wave in response to a reference clock CK, commonly used for timekeeping by a time counter, to obtain an in-phase component I and a quadrature component Q of the carrier wave for obtaining an amplitude Aof the carrier wave, and a time correction meansfor obtaining time information depending on the amplitude of the carrier wave from the quadrature detection circuit. The time counteris responsive to time information delivered from the time correction means to correct current time.