A magnetic recording, reproducing, and editing apparatus

Claim 2

A magnetic recording and reproducing system comprising magnetic video signal recording and reproducing means including two magnetic heads mounted on the peripheral edge of a rotary body, means for starting and stopping said last named means, means responsive to said starting for moving magnetic tape from a supply reel along a predetermined helical path adjacent said rotary body, means for rotating said rotary body so that said magnetic heads trace parallel oblique tracks with respect to the longitudinal axis of said magnetic tape, said heads and tape moving at relative speeds such that at least one field of video signal is recorded on each track, a fixed magnetic sound signal recording and reproducing head, means for manually terminating the motion of said magnetic tape by operating said stopping means at a position selected relative to signals previously recorded thereon where editing signals are to be recorded on said magnetic tape, means for generating a single pulse signal, a fixed magnetic cue signal recording head, means comprising said fixed magnetic cue signal head for recording said single pulse signal as a cue signal on at least one marginal portion of the stopped magnetiC tape, a fixed magnetic cue signal reproducing head disposed at a position which is closer to the supply reel than the position at which said fixed magnetic cue signal recording head and said fixed magnetic sound signal recording and reproducing head are disposed, means comprising said cue signal reproducing head for reproducing the recorded cue signal while the magnetic tape is being moved past said fixed magnetic cue signal reproducing head, and sound signal recording means including said fixed magnetic sound signal recording and reproducing head operated responsive to the reproduced cue signal for recording said editing signals at said selected position, said recording being made on said magnetic tape while it is moving.

Claim 3

A magnetic recording and reproducing system comprising magnetic video signal recording and reproducing apparatus including two magnetic heads mounted on the peripheral edge of a rotary body, means for moving magnetic tape from a supply reel along a predetermined helical path adjacent said rotary body, means for manually starting and stopping said tape movement, means for rotating said rotary body so that said magnetic heads trace parallel oblique tracks with respect to the longitudinal axis of said magnetic tape, said heads and tape moving at speeds relative to each other so that at least one field of video signal is recorded on each track, fixed magnetic sound signal recording and reproducing head, means for monitoring the pictures of the video signal reproduced by said magnetic video signal recording and reproducing means, means for operating monitored pictures at slow motion to a selected position in a previously recorded video signal on the magnetic tape where editing signals are to be recorded, means responsive to operation of said stopping means for stopping the motion of said magnetic tape at the selected position, means for generating a single pulse signal, a fixed magnetic cue signal recording head, means comprising said fixed magnetic cue signal recording head for recording said single pulse signal as a cue signal on at least one marginal portion of the stopped magnetic tape, a fixed magnetic cue signal reproducing head disposed at a position which is closer to the supply reel than the position at which said fixed magnetic cue signal recording head and said fixed magnetic sound signal recording and reproducing head are disposed, means for rewinding the magnetic tape to the supply reel, means comprising said cue signal reproducing head for reproducing the recorded cue signal while the magnetic tape is being moved past said fixed magnetic cue signal reproducing head by said means for moving magnetic tape from a supply reel, means responsive to the reproduced cue signal for generating a pulse signal, relay means operated responsive to said pulse signal for closing a switch, a sound signal tape recorder means having said editing signals previously recorded therein, means for connecting said sound signal tape recorder to a power source through said closed switch, thereby energizing said sound signal tape recorder and reproducing the recorded editing signal, and sound signal recording means including said fixed magnetic sound signal recording and reproducing head for recording said editing signals reproduced from said sound signal tape recorder on at least one marginal portion of the moving magnetic tape.

Claim 4

A magnetic recording and reproducing system comprising magnetic video signal recording and reproducing apparatus including two magnetic heads mounted on the peripheral edge of a rotary body, means for moving magnetic tape from a supply reel along a predetermined helical path adjacent said rotary body, means for manually starting and stopping said tape movement, means for rotating said rotary body so that said magnetic heads trace parallel oblique tracks with respect to the longitudinal axis of said magnetic tape, said heads and tape moving at speeds relative to each other so that at least one field of video signal is recorded on each track, fixed magnetic sound signal recording and reproducing head, means for monitoring the pictures of the video signal reproduced by said magnetic video signal recording and reproducing means, means for operating monitored pictures at slow motion to a selected position in a previously recorded video signal on the magnetic tape where editing signals are to be recorded, means responsive to operation of said stopping means for stopping the motion of said magnetic tape at the selected position, means for generating a single pulse signal, a fixed magnetic cue signal recording head, means comprising said fixed magnetic cue signal recording head for recording said single pulse signal as a cue signal on at least one marginal portion of the stopped magnetic tape, a fixed magnetic cue signal reproducing head disposed at a position which is closer to the supply reel than the position at which said fixed magnetic cue signal recording head and said fixed magnetic sound signal recording and reproducing head are disposed, means for rewinding the magnetic tape to the supply reel, means comprising said cue signal reproducing head for reproducing the recorded cue signal while the magnetic tape is being moved past said fixed magnetic cue signal reproducing head by said means for moving magnetic tape from a supply reel, means responsive to the reproduced cue signal for generating a pulse signal, relay means operated responsive to said pulse signal for closing a switch, a sound signal tape recorder means having said editing signals previously recorded therein, means for connecting said sound signal tape recorder to a power source through said closed switch, thereby energizing said sound signal tape recorder and reproducing the recorded editing signal, and sound signal recording means including said fixed magnetic sound signal recording and reproducing head for recording said editing signals reproduced from said sound signal tape recorder on at least one marginal portion of the moving magnetic tape.

Claim 5

The system defined in claim 2 wherein said signal pulse signal has a constant pulse width.

Claim 6

The system defined in claim 2 wherein said means for generating a single pulse signal comprises monostable multivibrator means, and means for triggering said monostable multivibrator means by applying a DC voltage to the input of said monostable multivibrator means through a key switch.