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:
Oct. 06, 1987
Filed:
Mar. 19, 1984
Masao Tomita, Neyagawa, JP;
Akio Hashima, Kyoto, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
A video signal processing apparatus used for a video tape recorder performs chrominance signal processing which is digitalized. The chrominance signal is up-converted and phase-shifted in a recording block, and, in a reproducing block, phase-shifted in the opposite direction, filtered by a comb filter, compensated for jitter, and up-converted to the original chrominance signal. Both the recording block and the reproducing block are digitalized or only the reproducing block is digitalized. The digital chrominance signal processing circuit includes an A/D converter, a digital phase shifter, a digital comb filter, a digital jitter compensator, and a D/A converter.