H - Electricity – 04 – N
Patent
H - Electricity
04
N
352/18
H04N 5/92 (2006.01) G11B 5/027 (2006.01) G11B 20/22 (2006.01) H04N 9/835 (2006.01)
Patent
CA 1193358
APPARATUS FOR RECORDING AND/OR REPRODUCING VIDEO AND AUDIO SIGNALS ABSTRACT OF THE DISCLOSURE A video and audio signal recording apparatus includes first and second frequency-modulators in which a first audio signal, for example, a stereophonic left signal, modulates a first carrier and a second carrier with a frequency higher than that of the first carrier so as to provide first and second FM audio signals, respectively, third and fourth frequency-modulators in which a second audio signal, for example, the stereophonic right signal, modulates a third carrier with a frequency higher than that of the second carrier and a fourth carrier with a frequency higher than that of the third carrier so as to provide third and fourth FM audio signals, respectively, a first mixing circuit for mixing the first and third FM audio signals with a video signal, such as, a composite color video signal having a frequency modulated luminance component signal in a frequency band separated from the band of a frequency- converted chrominance component signal so as to provide an interval therebetween for accommodating the first through fourth FM audio signals, a second mixing circuit for mixing the second and fourth FM audio signals with the video signal, and first and second magnetic heads having different azimuth angles and respectively receiving first and second mixed audio and video signals from the first and second mixing circuits, respectively, for recording of such first . and second mixed signals in record tracks which are adjacent each other on a magnetic record medium. In apparatus for reproducing a video and audio signal recorded as aforesaid, the first and second magnetic heads with different azimuth angles are operative to alternately reproduce the first and second mixed audio and video signals from the respective adjacent record tracks, whereupon the first through fourth FM audio signals are separated from the respective mixed audio and video signals and demodulated to provide respective alternately reproduced portions of the first and second or stereophonic left and right audio signals which are applied to combining switches operated in synchronism with the alternate reproduction of the first and second mixed signals by the first and second magnetic heads, with the result that substantially continuous reproduced stereo- phonic left and right signals are delivered by the respective combining switches.
416467
Kakuyama Shinji
Kamai Toshimitsu
Kono Takashi
Gowling Lafleur Henderson Llp
Sony Corporation
LandOfFree
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