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:
Mar. 24, 1987
Filed:
Oct. 19, 1983
Nobukazu Hosoya, Nara, JP;
Yoshihiro Murakami, Daito, JP;
Takeshi Higashino, Daito, JP;
Yoshihiro Harai, Daito, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A delay circuit for delaying an FM video signal is disclosed. The delay circuit includes an input for supplying the FM video signal, an output for producing a delayed FM video signal, and a delay line connected between the input and output for delaying FM video signal. The delay line is defined by a plurality of I.sup.2 Ls connected in cascade. The delay circuit further includes a phase comparator provided for comparing a phase between FM video signal at the input and the delayed FM video signal at the output and for producing a difference signal representing the phase difference. The difference signal is used for changing and injection current to be applied to the I.sup.2 Ls such that the delay effected in the delay line is made substantially equal to the required delay.