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:
Jun. 17, 1980
Filed:
Mar. 07, 1978
Keiji Ozawa, Yokohama, JP;
Hisao Kinjo, Yokohama, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
An information signal recording system separates a color video signal into a luminance signal and a carrier chrominance signal. The frequency of the separated carrier chrominance signal is converted to a lower frequency band. A carrier is frequency modulated with at least one audio signal which is mixed with the separated luminance signal and the frequency converted carrier chrominance signal. A carrier is frequency modulated with the mixed signals, and recorded as a main information signal on a main information signal track of a recording medium. A system for reproducing the recording medium reproduces the recorded main information signal from the recording medium. The reproduced main information signal is frequency demodulated, and the resulting output signal is separated into the luminance signal and the frequency converted carrier chrominance signal. The converted carrier chrominance signal is returned to the original frequency and mixed with the separated luminance signal to produce a reproduced color video signal. The frequency modulated audio signal is separated from the frequency demodulated main information signal. The separated frequency modulated audio signal is then demodulated.