Magnetic recording apparatus for recording video and two kinds of audio signals

Claim 1

A recording and reproducing apparatus comprising: (a) a first group of magnetic heads having different azimuth angles, a second group of magnetic heads having different azimuth angles which also differ from the azimuth angles of the magnetic heads in the first group, and a third group of magnetic heads having different azimuth angles which also differ from the azimuth angles of the magnetic heads in the first and second groups; (b) a first modulator converting a first input signal into a corresponding frequency-modulated signal; (c) means for applying an output signal of the first modulator to the first group of the magnetic heads; (d) a first demodulator demodulating a signal reproduced via the first group of the magnetic heads; (e) a first digital signal processor converting the first input signal into a corresponding digital signal and processing the digital signal; (f) means for applying an output signal of the digital signal processor to the second group of the magnetic heads; (g) a second digital signal processor processing a signal reproduced via the second group of the magnetic heads and converting the reproduced and processed signal into an analog signal; (h) a first signal processor separating an input video signal into a luminance signal and a color signal; (i) a second modulator converting output signals of the first signal processor into a corresponding frequency-modulated luminance signal and a corresponding down-converted chrominance signal; (j) means for applying an output signal of the second modulator to the third group of the magnetic heads; (k) a second demodulator converting a signal, reproduced via the third group of the magnetic heads, into a luminance signal and a color signal; (l) a second signal processor converting output signals of the second demodulator into a video signal; (m) a detector sensing a sensed portion of a magnetic tape cassette and generating a detection signal representative thereof; (n) means for enabling the application of the output signal of the first digital signal processor to the second group of the magnetic heads in accordance with the detection signal; and (o) means for increasing a frequency of a carrier of the frequency-modulated luminance signal in accordance with the detection signal.