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, 1990
Filed:
Sep. 01, 1988
Applicant:
Inventor:
Yutaka Ichinoi, Yokohama, JP;
Assignee:
Victor Company of Japan, Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 40 ;
Abstract
A carrier chrominance signal processing circuit comprises first through fourth circuits. The first circuit detects an edge of color in an input carrier chrominance signal. The second circuit holds color information on the carrier chrominance signal in a vicinity of the edge of color. The third circuit produces a control signal having a predeterined pulse width in response to the detected edge of color. The fourth circuit selects a held color information when the control signal is produced, and selects the carrier chrominance signal when no control signal is produced, so that a steepened carrier chrominance signal is outputted from the fourth circuit.