Sony Corporation

Other

Toshimitsu Kamai

Masaaki Komatsu

Masakazu Sonoda

Hiroyuki Kaimai

Takashi Kono

Shinji Kakuyama

Akira Minegishi

Atsuo Sakai

A video and audio signal reproducing apparatus comprises an audio signal processing circuit which reproduces at least one audio signal recorded in at least one longitudinally disposed track on a magnetic recording medium, a mixed signal processing circuit which reproduces the audio signal from first and second mixed audio and video signals recorded in first and second adjacent slant tracks, respectively, on the magnetic recording medium, and a detecting circuit which detects when the audio signal is included in the signals recorded in the slant tracks on the magnetic recording medium and which selects the audio signal from the mixed signal processing circuit when the audio signal is reproduced thereby and which selects the audio signal from audio signal processing circuit at all other times.

Apparatus for reproducing video and audio signals

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.

VTR With high-quality audio recording system

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.

Apparatus for recording and/or reproducing video and audio signals

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.

Video signal reproducing apparatus

In an apparatus which reproduces video signals using rotating heads to scan oblique tracks formed on a tape, the tape is intermittently moved and stopped by a tape capstan motor which is driven by a motor drive pulse. The motor drive pulse is generated at predetermined time intervals corresponding to a predetermined number of tracks for slow-motion reproduction of the recorded video signals. Deviations in the amount of tape intermittently advanced, as measured by a predetermined number of tracks, is avoided by varying the pulse-width or amplitude of the motor drive pulse.

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Higashikurume, Japan

Toshimitsu Kamai