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. 01, 1994
Filed:
Jan. 23, 1992
Yoshihisa Nishigori, Itami, JP;
Matsushita Electric Industrial Co. Ltd., Osaka, JP;
Abstract
A luminance/chrominance separator includes a high pass filter for separating a high-frequency signal from a composite video signal, an adder for finding a sum signal indicative of a sum of signals before and after one horizontal period with respect to the high-frequency signal, a subtracter for finding a difference between the signals before and after one horizontal period, and a selection circuit for selecting smaller one of the sum and difference signal in absolute value, wherein an output of the selection circuit is used to suppress any leakage of luminance and chrominance signals into the output of a comb filter.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile