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:
Aug. 01, 1989
Filed:
Sep. 16, 1987
Hidetoshi Ozaki, Chofu, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A video signal processing circuit for aperture correction or picture restoration having a high frequency range emphasis filter which provides a signal whose high frequency range emphasized, a plurality of delay circuits connected serially which output signals having different delay times and a selector which effects level comparison among the input signal the output signals with delays and which supplies the maximum or minimum of them to a first limiter as its threshold level and the minimum or maximum of them to a second limiter as its threshold level. The first limiter limits the high frequency range emphasized signal and the second limiter limits the output signal of the first limiter. A high frequency component extraction circuit and a noise suppressor which suppress noise in high frequency component and adder which adds together the output of the second limiter and the output of the noise suppressor may be used.