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公开(公告)号：AU556167B2
公开(公告)日：1986-10-23
申请号：AU1079483
申请日：1983-01-26
Applicant: SONY CORP
Inventor： KAMAI TOSHIMITSU
Abstract: A video and audio signal reproducing apparatus comprises an audio signal processing circuit (20) which reproduces at least one audio signal recorded in at least one longitudinally disposed track (T L , T R ) on a magnetic recording medium (1 F), a mixed signal processing circuit (50) which reproduces the audio signal from first and second mixed audio and video signals recorded in first and second adjacent oblique tracks (T A , T B ),respectively, on the magnetic recording medium (1F);and a detecting circuit (20) which detects when the audio signal is included in the signals recorded in the oblique tracks (T A , T B ) on the magnetic recording medium (1F) and which selects the audio signal from the mixed signal processing circuit (50) when the audio signal is reproduced thereby and which selects the audio signal from audio signal processing circuit (20) at all other times.
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公开(公告)号：CA1193003A
公开(公告)日：1985-09-03
申请号：CA417086
申请日：1982-12-06
Applicant: SONY CORP
Inventor： MINEGISHI AKIRA , KONO TAKASHI , KAMAI TOSHIMITSU
Abstract: VTR WITH HIGH-QUALITY AUDIO RECORDING SYSTEM A video and audio signal recording apparatus includes frequency-modulators in which an audio signal, for example, a stereophonic left signal, modulates first and second carriers with different frequencies so as to provide first and second FM audio signals, respectively, a first mixing circuit for mixing the first FM audio signal 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 frequencyconverted chrominance component signal so as to provide an interval therebetween for accommodating the FM audio signals, a second mixing circuit for mixing the second FM audio signal with the video signal, first and second magnetic heads respectively receiving first and second mixed audio and video signals from the first and second mixing circuits, respectively, for recording in respective record tracks which are adjacent each other on a magnetic record medium, the heads and record medium having a magnetic characteristic which varies with the frequency of the signal being recorded, and the levels of the FM audio signals in the first and second mixed signals being substantially less than the levels of the FM luminance and frequency converted chrominance signal and different from each other in the sense to compensate for the magnetic characteristic which varies with frequency. The levels of the FM audio signals in the first and second mixed audio and video signals are desirably varied upon changes in the level of the audio signal to be recorded.
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公开(公告)号：BR8207111A
公开(公告)日：1983-10-11
申请号：BR8207111
申请日：1982-12-08
Applicant: SONY CORP
Inventor： KAKUYAMA SHINJI , KONO TAKASHI , KAMAI TOSHIMITSU
Abstract: 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.
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公开(公告)号：GB2113894A
公开(公告)日：1983-08-10
申请号：GB8235316
申请日：1982-12-10
Applicant: SONY CORP
Inventor： MINEGISHI AKIRA , KONO TAKASHI , KAMAI TOSHIMITSU
Abstract: A video and audio signal recording apparatus includes frequency-modulators in which an audio signal, for example, a stereophonic left signal, modulates first and second carriers with different frequencies so as to provide first and second FM audio signals, respectively, a first mixing circuit for mixing the first FM audio signal 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 FM audio signals, a second mixing circuit for mixing the second FM audio signal with the video signal, first and second magnetic heads respectively receiving first and second mixed audio and video signals from the first and second mixing circuits, respectively, for recording in respective record tracks which are adjacent each other on a magnetic record medium, the heads and record medium having a magnetic characteristic which varies with the frequency of the signal being recorded, and the levels of the FM audio signals in the first and second mixed signals being substantially less than the levels of the FM luminance and frequency converted chrominance signal and different from each other in the sense to compensate for the magnetic characteristic which varies with frequency. The levels of the FM audio signals in the first and second mixed audio and video signals are desirably varied upon changes in the level of the audio signal to be recorded.
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公开(公告)号：AU9111182A
公开(公告)日：1983-06-23
申请号：AU9111182
申请日：1982-12-03
Applicant: SONY CORP
Inventor： MINEGISHI AKIRA , KONO TAKASHI , KAMAI TOSHIMITSU
Abstract: A video and audio signal recording apparatus includes frequency-modulators in which an audio signal, for example, a stereophonic left signal, modulates first and second carriers with different frequencies so as to provide first and second FM audio signals, respectively, a first mixing circuit for mixing the first FM audio signal 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 FM audio signals, a second mixing circuit for mixing the second FM audio signal with the video signal, first and second magnetic heads respectively receiving first and second mixed audio and video signals from the first and second mixing circuits, respectively, for recording in respective record tracks which are adjacent each other on a magnetic record medium, the heads and record medium having a magnetic characteristic which varies with the frequency of the signal being recorded, and the levels of the FM audio signals in the first and second mixed signals being substantially less than the levels of the FM luminance and frequency converted chrominance signal and different from each other in the sense to compensate for the magnetic characteristic which varies with frequency. The levels of the FM audio signals in the first and second mixed audio and video signals are desirably varied upon changes in the level of the audio signal to be recorded.
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Patent Agency Ranking
公开(公告)号：FR2518343A1
公开(公告)日：1983-06-17
申请号：FR8220788
申请日：1982-12-10
Applicant: SONY CORP
Inventor： KAKUYAMA SHINJI , KONO TAKASHI , KAMAI TOSHIMITSU
Abstract: 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.
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公开(公告)号：CA1193358A
公开(公告)日：1985-09-10
申请号：CA416467
申请日：1982-11-26
Applicant: SONY CORP
Inventor： KAKUYAMA SHINJI , KONO TAKASHI , KAMAI TOSHIMITSU
Abstract: APPARATUS FOR RECORDING AND/OR REPRODUCING VIDEO AND AUDIO SIGNALS 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 frequencyconverted 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 stereophonic left and right signals are delivered by the respective combining switches.
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公开(公告)号：CA1171960A
公开(公告)日：1984-07-31
申请号：CA378628
申请日：1981-05-29
Applicant: SONY CORP
Inventor： KAIMAI HIROYUKI , SONODA MASAKAZU , KOMATSU MASAAKI , SAKAI ATSUO , KAMAI TOSHIMITSU
Abstract: In an apparatus for reproducing video signals recorded in successive parallel tracks extending at an angle to the lengthwise direction of a tape and wherein two main reproducing heads having different azimuth angles with respect to each other are arranged to be diametrically opposed and alternately reproduce the video signals from the tracks when the tape is transported lengthwise at a standard speed, and an auxiliary reproducing head having the same azimuth angle as one of the main reproducing heads is circumferentially displaced by (n + 0.25)H' from another of the main reproducing heads, where n is zero or a positive integer and H' is an angle corresponding to one horizontal scan line on the tape, from the auxiliary reproducing head and reproduces the video signals in cooperation with one of the main reproducing heads when the tape is stopped, and delay control means for alternately delaying the reproduced video signal from one of the main reproducing heads and the video signal from the auxiliary reproducing head by an amount corresponding to a break in the continuity of the horizontal synchronizing pulses which occurs in synchronism with the changing of the reproduction of said video signals by the one of the main reproducing heads and auxiliary reproducing head.
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公开(公告)号：DK549482A
公开(公告)日：1983-06-12
申请号：DK549482
申请日：1982-12-10
Applicant: SONY CORP
Inventor： KAKUYAMA SHINJI , KONO TAKASHI , KAMAI TOSHIMITSU
Abstract: 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.
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公开(公告)号：IT8224691D0
公开(公告)日：1982-12-10
申请号：IT2469182
申请日：1982-12-10
Applicant: SONY CORP
Inventor： KAKUYAMA SHINJI , KONO TAKASHI , KAMAI TOSHIMITSU
Abstract: 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.
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