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. 19, 1980
Filed:
Mar. 13, 1978
Fusao Ushio, Hirakata, JP;
Noboru Okuno, Sennan, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A video signal compensation system wherein a brightness signal and a chrominance signal are separated from each other by a comb filter and a color video signal of a buried subcarrier system in which the brightness signal and the chrominance signal are combined in a frequency interleaved relation, and signal defect portions for the brightness signal and the chrominance signal are substituted by a signal having a frequency equal to an integer multiple of a frequency corresponding to one horizontal scanning period. An output of a one-horizontal scanning period delay line which constitutes the comb filter for extracting the chrominance signal is applied to an input of the comb filter only during the signal defect period with a phase of the chrominance signal being reversed, to separate the chrominance signal and compensate for the signal defect portion of the chrominance signal.