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:
Oct. 14, 1997
Filed:
Sep. 25, 1996
Nobuhiro Sakai, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A method of generating a control signal is comprised of the steps of detecting a drum rotational amount on the basis of a switching signal which switches a plurality of rotary heads, detecting a displacement amount of a control signal on the basis of a signal indicative of the drum rotational amount and levels of reproduced signals from the plurality of rotary heads, detecting a rotary frequency of a capstan motor, generating a pseudo control signal by frequency-dividing a detected signal indicative of the rotary frequency of the capstan motor by a predetermined value, and correcting a phase of the pseudo-control signal generated on the basis of the signal indicative of the displacement amount of the control signal.