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:
Mar. 29, 1988
Filed:
Sep. 03, 1986
Applicant:
Inventor:
Jyoji Kawai, Kobe, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03L / ; H02P / ;
U.S. Cl.
CPC ...
331 25 ; 331 65 ; 318314 ;
Abstract
A digital rotation detecting apparatus of the invention, which is adapted to detect a phase angle .theta..sub.r of a resolver by using a multiple frequency clock of the excitation frequency for the resolver and a clock of a voltage control oscillator, is detectable of an instantaneous value of the phase angle .theta..sub.r at a desired time without delay, is also detectable directly of the rotational speed, and requires no low frequency excitation because the excitation frequency for the resolver needs only to be constant.
Kawai, Jyoji. (1988). Digital rotation detecting apparatus (U.S. Patent No. 4734655). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4734655
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile