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. 02, 1987
Filed:
Jul. 31, 1986
Hiroshi Asai, Sagamihara, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A capstan motor control circuit comprises a comparing circuit for comparing an instruction voltage dependent on an instructed low-speed search mode and a rotational speed voltage dependent on a present rotational speed of a capstan motor, a circuit for detecting a rotating direction of the capstan motor and for generating a rotating direction instruction which instructs rotation in a direction opposite to a detected present rotating direction of the capstan motor, a circuit for generating a braking voltage, and a circuit responsive to an output of the comparing circuit for supplying to the capstan motor the rotating direction instruction and the braking voltage during a time period in which the rotational speed voltage is greater than the instruction voltage, and for supplying to the capstan motor the instruction voltage and a rotating direction instruction which instructs rotation in a direction identical to the present rotating direction of the capstan motor when the rotational speed voltage becomes approximately equal to the instruction voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile