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:
Jun. 28, 2022
Filed:
Jul. 21, 2020
Alps Alpine Co., Ltd., Tokyo, JP;
Kiyoshi Sasai, Miyagi-ken, JP;
Masahiro Kimura, Miyagi-ken, JP;
ALPS ALPINE CO., LTD., Tokyo, JP;
Abstract
A sensor device includes a sensor unit that generates a detection signal having the same detection frequency as an entered sinusoidal analog signal and matching a physical quantity to be detected; a reference signal generating unit that generates a reference signal having the detection frequency, according to the entered analog signal; converting units that convert the detection signal and reference signal to digital signals in synchronization with a clock signal; a demodulating unit that multiplies the digital detection signal by each of two sinusoidal synchronization signals having the detection frequency, the phases of the two synchronization signals being shifted from each other by one-fourth of a cycle, and generates two demodulated signals free from a harmonic component; and a correcting unit that corrects the demodulated signals according to the digital reference signal so as to suppress variations, in the demodulated signals, caused by variations in the clock signal phase.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile