Magnetic recording and reproducing system using preceding and lagging groups of rotary heads to permit coincident timing for reproduced video and audio signals

A rotary head magnetic recording and reproducing system comprising:

• means for supplying at least one audio signal and a video signal to be recorded;
• two groups of rotary transducer heads, each group comprising at least two pairs of transducer heads, mounted such that each head of a pair of heads is diametrically opposite to one another on a rotary cylinder, one group of said rotary heads preceding another group of rotary heads in a rotary direction of said heads during each of recording and reproducing modes, said two groups of rotary heads being arranged to record and reproduce a predetermined unit of a video signal, and an audio signal corresponding to said unit of video signal on a magnetic tape in record tracks which are slanted with respect to a longitudinal direction of said magnetic tape, each record track having respective portions for recording and reproducing video and audio signals;
• and
• means for causing said rotary heads to record said supplied audio and video signals and to reproduce recorded audio and video signals, such that:
• (a) supplied video and audio signals are recorded by a preceding group of rotary heads during a recording mode;
• (b) recorded audio signals are reproduced by a preceding pair of rotary heads during a reproduction mode;
• and, (c) a recorded video signal is reproduced during said reproduction mode by a group of rotary heads which lag behind the reproduction mode preceding pair of rotary heads.

A rotary head magnetic recording and reproducing system comprising:

• means for supplying at least one audio signal and a video signal to be recorded;
• two groups of rotary transducer heads, each group comprising at least two pairs of transducer heads, mounted such that each head of a pair of heads is diametrically opposite to one another on a rotary cylinder, one group of said rotary heads preceding another group of rotary heads in a rotary direction of said heads during each of recording and reproducing modes, said two groups of rotary heads being arranged to record and reproduce a predetermined unit of a video signal, and an audio signal corresponding to said unit of video signal on a magnetic tape in record tracks which are slanted with respect to a longitudinal direction of said magnetic tape, each record track having respective portions for recording and reproducing video and audio signals;
• rotary erasing heads arranged to precede said two groups of rotary heads in the rotating direction of said rotary heads;
• and
• means for causing said rotary heads to record said supplied audio and video signals and to reproduce recorded audio and video signals, such that:
• (a) supplied video and audio signals are recorded by a preceding group of rotary heads during a recording mode;
• (b) recorded audio signals are reproduced by a preceding pair of rotary heads during a reproduction mode;
• and, (c) a recorded video signal is reproduced during said reproduction mode by a group of rotary heads which lag behind the reproduction mode preceding pair of rotary heads, wherein said each group of rotary heads comprises one pair of transducer heads adapted to record and reproduce one of three components of the supplied video signal and the audio signals of at least one or more channels and another pair of transducer heads adapted to record and reproduce the other two components of the video signal and audio signals of the remaining channels.

A rotary head magnetic recording and reproducing system comprising:

• means for supplying audio signals of a plurality of channels and a video signal to be recorded;
• two groups of rotary transducer heads with each group comprising at least two pairs of transducer heads, each head of a pair being mounted diametrically opposite to another head of the pair on a rotary cylinder, one group of said rotary heads preceding another group of rotary heads in a rotary direction of said heads during each of recording and reproducing modes, said two groups of rotary heads being arranged to record and reproduce a predetermined unit of a video signal, and an audio signal corresponding to said unit of video signal on a magnetic tape in record tracks which are slanted with respect to a longitudinal direction of said magnetic tape, each record track having respective portions for recording and reproducing video and audio signals;
• and
• means for causing said rotary heads to record said supplied audio and video signals, such that:
• (a) in a recording mode a supplied video signal is recorded by the preceding group of rotary heads, a supplied audio signal of at least one channel is recorded by one of said two groups of rotary heads, while the audio signal of another channel in reproduced by the other of said two groups of rotary heads;
• and
• (b) in a reproduction mode, recorded audio signals are reproduced by a preceding pair of rotary heads and a recorded video signal is reproduced by a group of rotary heads lagging behind said preceding pair of rotary heads.