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:
Dec. 03, 1985
Filed:
Feb. 15, 1983
Akira Shibata, Katsuta, JP;
Keiichi Komatsu, Katsuta, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Disclosed is a magnetic recording/reproducing apparatus, in which a luminance signal and a carrier chrominance signal are separated from a composite color video signal, a luminance carrier signal is frequency-modulated with the luminance signal, a frequency of a subcarrier signal of the carrier chrominance signal is frequency-converted into a low band frequency so as to dispose the carrier chrominance signal in the frequency band lower than the lower side band of the luminance signal, a sound carrier signal is frequency-modulated with an aural signal, the aural signal is disposed in the frequency band between the luminance signal and the carrier chrominance signal, and the video signal and the aural signal are frequency-multiplexed and recorded. A comb line filter is inserted in a recording luminance signal processing circuit for separating the luminance signal from the composite color video signal and for processing the luminance signal.