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. 26, 1999
Filed:
Oct. 04, 1996
Applicant:
Inventor:
Yasuyuki Ohnishi, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; H04N / ;
U.S. Cl.
CPC ...
360 70 ; 360 75 ; 360 7306 ; 386 86 ; 386 14 ;
Abstract
In a motor control circuit for a VCR, a microcomputer calculates a center frequency to be targeted by a drum motor based on frequency pulses from the capstan motor, and generates a speed control signal for the drum motor based on a frequency deviation of the drum motor from the center frequency. Thus, in the motor control circuit, color misplacement occurring during a tape speed change is eliminated easily and surely.