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:
Dec. 18, 1984
Filed:
Sep. 21, 1982
Applicant:
Inventors:
Yutaka Tanaka, Yokohama, JP;
Toshinobu Isobe, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 31 ;
Abstract
A separating filter includes a band pass filter supplied with a composite color video signal, having a resonance frequency of a chrominance sub-carrier frequency, a first circuit supplied with the output of the band pass filter for generating first and second signals having the same phase but different time relationship, and a second circuit for comparing levels of the first and second signals with a level of a reference signal and for producing the signal that has a level nearer the reference level.