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:
Jul. 01, 1997
Filed:
Nov. 09, 1995
Applicant:
Inventor:
Yoshitaka Natsume, Kanagawa, JP;
Assignee:
Sony Corporation, , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348737 ; 348736 ; 348732 ; 455307 ;
Abstract
A detecting circuit for a composite signal containing a video signal and an audio signal. A filter for attenuating the video and audio signals is provided in a PLL circuit loop disposed in the detecting circuit, thus the video or audio signal component generated in the output of the PLL circuit can be reduced and a beat component is not generated in the output of the detecting circuit.