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:
Sep. 13, 1994
Filed:
Feb. 25, 1992
Naoto Hayashi, Yokohama, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A magnetic recording correction circuit for a video tape recorder comprises a first multiplier supplied with a first signal to output a signal having a frequency which is twice as high as that of the first signal; a second multiplier supplied with a second signal and a first multiplier output signal outputted from the first multiplier to output a correction signal having a component of a sum frequency of the second signal and the first multiplier output signal and a component of a difference frequency therebetween; an adding circuit for adding the first and second signals and the correction signal; and a phase shifter provided on the output side of the second multiplier to exert a phase characteristic on the correction signal with respect to the first and second signals.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile