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. 29, 1983
Filed:
Apr. 07, 1981
Hiroshi Iwai, Yokohama, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A circuit for controlling rotation of motor comprises a frequency generator for generating a rotational velocity signal responsive to the rotational velocity of a motor whose rotation is to be controlled, reference signal generator for generating a reference signal, phase comparator for comparing the phases of the rotational velocity signal and the reference signal, a multiplexing circuit for multiplexing the rotational velocity signal and the output signal of the phase comparator, a sample-and-hold circuit for sampling and holding the output multiplexed signal of the multiplexing circuit by the rotational velocity signal, and a controlling circuit for controlling the rotation of the motor by the output signal of the sample-and-hold circuit.