Edit control apparatus for recording equipment

Claim 1

Edit control apparatus for recording equipment having edit-in means for causing said recording equipment to commence editing a strip of magnetic tape when a first switching means is closed, edit-out means for causing said recording equipment to terminate editing said strip of magnetic tape when a second switching means is closed, cue record means for recording cue signals on said strip, and cue playback means for playing back the recorded cue signals, comprising: signal generating means for developing fIrst and second cue signals for input to said cue record means; means for selectively coupling said first and second cue signals to said cue record means; signal detecting means coupled to said cue playback means, said detecting means being responsive to the recorded first cue signal and operative to develop a first output signal, and responsive to the second recorded cue signal and operative to develop a second output signal; a first source of potential and a second source of potential; first switching means for activating said edit-in means; second switching means for activating said edit-out means; third switching means having a first armature and a first contact, said first armature being coupled to said second source of potential; fourth switching means having a second armature, a second contact and a third contact, said second armature normally engaging said second contact; fifth switching means having a third armature coupled to said second source of potential and a fourth contact coupled to said second armature; a diode coupling said first contact to said fourth contact; a first relay coil connected between said first source of potential and said second contact and operative to close said first switching means when said second armature engages said second contact and said third armature engages said fourth contact; a second relay coil connected between said first source of potential and said third contact and operative to close said second switching means when said second armature engages said third contact and said third armature engages said fourth contact or when said first armature engages said first contact; a third relay coil connected between said first source of potential and said first contact and operative to cause said first armature to engage said first contact when said third armature engages said fourth contact; delay means including a fourth relay coil coupled between said first source of potential and said first contact and operative to cause said second armature to dis-engage said second contact and engage said third contact a predetermined time after said third armature engages said fourth contact; and means responsive to said first and second output signals and operative to cause said third armature to engage said fourth contact.