Signal editing system and apparatus for recording and reproducing apparatus

Claim 2

A signal editing system for a magnetic recording and reproducing apparatus which comprises means including at least one rotary magnetic head for recording a video signal on and reproducing said video signal from one portion of a magnetic tape, said video signal including at least a vertical synchronizing signal, means responsive to the vertical synchronizing signal for producing a control signal, means comprising a fixed magnetic head for recording said control signal on and reproducing said control signal from another portion of the magnetic tape, means responsive to said control signal for rotating the rotary magnetic head in synchronism with the control signal during operation of the apparatus in a recording mode, means responsive to the control signal reproduced by said fixed magnetic head from said other portion of the magnetic tape for rotating the rotary magnetic head in synchronism with the reproduced control signal during operation of the apparatus in a reproducing mode, means comprising a motor for moving the magnetic tape at a predetermined velocity responsive to a current flowing from a power supply through said motor; separator means for separating a vertical synchronizing signal from a video signal, means for supplying a second video signal to the separator means to be edited and recorded on the magnetic tape to produce a second vertical synchronizing signal, and combination means operative when the second video signal is supplied to the separator means, said combination means including means responsive to the supply of the second video signal to said separator means for inserting an impedance element between said motor and said power supply, whereby current flowing through the motor is controlled to change the velocity of the magnetic tape from the predetermined velocity, detector means responsive only to said second vertical synchronizing signal coinciding in time with the control signal reproduced by the fixed magnetic head for combining said second vertical synchronizing signal with the control signal reproduced by the fixed magnetic head and generating an output signal, means responsive to the generation of the output signal from said detector means for making said impedance element inactive, means responsive to the generation of the output signal from said detector means for recording said second video signal on said one portion of the magnetic tape, and means responsive to the generation of the output signal from said detector means for recording a second control signal on said other portion of the magnetic tape, said second control signal being produced from the second vertical synchronizing signal by the control signal producing means.

Claim 3

A signal editing system for a magnetic recording and reproducing apparatus which comprises a supply reel for supplying a magnetic tape, means comprising at least one rotary magnetic head for recording a video signal on and reproducing said video signal from one portion of the magnetic tape, said video signal having at least a vertical synchronizing signal, a take-up reel for taking up the magnetic tape, means for producing a control signal from the vertical synchronizing signal, a first fixed magnetic head disposed between said rotary magnetic head and said take-up reel for recording said control signal on another portion of the magnetic tape, means responsive to said control signal for rotating the rotary magnetic head in synchronism with the control signal during operation of the apparatus in a recording mode, a second fixed magnetic head disposed between said supply reel and said rotary magnetic head for reproducing the control signal from said other portion of the magnetic tape, means responsive to the control signal reproduced by the second fixed magnetic head for rotating the rotary magnetic head in synchronism with the reproduced control signal during operation of the apparatus in a reproducing mode, means comprising a motor for moving the magnetic tape at a predetermined velocity responsive to a current flowing from a power supply through said motor, separator means for separating a vertical synchronizing signal from a video signal, means for supplying a second video signal to the separator means to be edited and recorded on the magnetic tape to produce a second vertical synchronizing signal, combination means operative when the second video signal is supplied to the separator means, said combining means including means responsive to the supply of the second video signal to said separator means for inserting an impedance element between said motor and said power supply, whereby current flowing through the motor is controlled to change the velocity of the magnetic tape from the predetermined velocity, means including an AND gate circuit responsive only to a coincidence of said second vertical synchronizing signal and the reproduced control signal for combining said second vertical synchronizing signal with the control signal reproduced by the second fixed magnetic head and for generating an output signal, means responsive to the generation of the output signal from the AND gate circuit means for making said impedance element inactive, means responsive to the generation of the output signal from the AND gate circuit means for recording said second video signal on said one portion of the magnetic tape, and means responsive to the generation of the output signal from the AND gate circuit means for recording a second control signal on said other portion of the magnetic tape by the first fixed magnetic head, said second control signal being produced from the second vertical synchronizing signal by the control signal producing means.

Claim 4

A signal editing system for a magnetic recording and reproducing apparatus which comprises a supply reel for supplying a magnetic tape, means comprising at least one rotary magnetic head for recording a video signal on and reproducing said video signal from one portion of the magnetic tape, said video signal having at least a vertical synchronizing signal, a take-up reel for taking up the magnetic tape, means for producing a control signal from the vertical synchronizing signal, a first fixed magnetic head disposed between said rotary magnetic head and said take-up reel for recording said control signal on another portion of the magnetic tape, means responsive to said control signal for rotating the rotary magnetic head in synchronism with the control signal during operation of the apparatus in a recording mode, a second fixed magnetic head disposed between said supply reel and said rotary magnetic head for reproducing the control signal from said other portion of the magnetic tape, means responsive to the control signal reproduced by the second fixed magnetic head for rotating the rotary magnetic head in synchronism with the reproduced control signal during operation of the apparatus in a reproducing mode, means comprising a motor for moving the magnetic tape at a predetermined velocity responsive to a current flowing from a power supply through said motor, separator means for separating a vertical synchronizing signal from a video signal, means for supplying a second video signal to the separator means to be edited and recorded on the magnetic tape to produce a second vertical synchronizing signal, combination means operative when the second video signal is supplied to the separator means, said combining means including means responsive to the supply of the second video signal to said separator means for inserting an impedance element between said motor and said power supply, whereby current flowing through the motor is controlled to change the velocity of the magnetic tape from the predetermined velocity, means including an AND gate circuit responsive only to a coincidence of said second vertical synchronizing signal and the reproduced control signal for combining said second vertical synchronizing signal with the control signal reproduced by the second fixed magnetic head and for generating an output signal, means responsive to the generation of the output signal from the AND gate circuit means for making said impedance element inactive, means responsive to the generation of the output signal from the AND gate circuit means for recording said second video signal on said one portion of the magnetic tape, and means responsive to the generation of the output signal from the AND gate circuit means for recording a second control signal on said other portion of the magnetic tape by the first fixed magnetic head, said second control signal being produced from the second vertical synchronizing signal by the control signal producing means.

Claim 5

The signal editing system for a magnetic recording and reproducing apparatus of claim 2 which further comprises an erasing means disposed between said first and second magnetic heads, means for stopping the operation of said erasing means immediately before said editing is ended, and means for ending the editing operation of the recording means with a predetermined delay time after the stopping of the operation of said erasing means.