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:
May. 17, 1988
Filed:
Sep. 30, 1985
Kaoru Kobayashi, Yokohama, JP;
Hidetoshi Ozaki, Chofu, JP;
Victor Company of Japan, Ltd., Tokyo, JP;
Abstract
A video signal digital processing system comprises an A/D converter for converting an input analog video signal employing the NTSC or system into a digital video signal, a first frequency converter for generating a signal sampled at a frequency f.sub.s which is a predetermined integer times a horizontal synchronizing signal frequency f.sub.H of the input analog video signal by frequency-converting the digital video signal so that the chrominance subcarrier frequency is converted into a frequency f.sub.s /4, a decimation circuit for performing a 1/3 decimation process with respect to the output signal of the first frequency converter by extracting samples with an interval of two samples, a processing circuit for subjecting an output signal of the decimation circuit to a predetermined signal processing, an interpolation circuit for performing an interpolation process complementary to the decimation process with respect to an output signal of the processing circuit, a second frequency converter for subjecting an output signal of the interpolation circuit to a frequency conversion complementary to the frequency conversion performed in the first frequency converter, and a D/A converter for converting an output signal of the second frequency converter into a an analog video signal.