Automatic code-correcting device

Claim 2

In combination with a coder-reader apparatus operating in Conjunction with a tape capable of carrying coded information while advancing step-by-step through said apparatus, said coderreader apparatus including coding means for marking said tape with coded information at successive locations and reading means for reading said coded information simultaneously with said marking at an adjacent location as said tape moves in a step-bystep fashion, and communication means for supplying coded information to said coding means, a device for automatically correcting a recorded code erroneously marked on said tape comprising first logic means for detecting data erroneously marked on said tape and said logic means responsive to said first logic means for causing said tape to recoil by one step to enable correction of said data, said second logic means including first delay means for inhibiting said communication means for two steps while said tape is recoiled during one step and is caused to come to a standstill for the duration of one step to permit operation of said coding means once again in case of incomplete data recording, said second logic means including second delay means for inhibiting said communication means for three steps while said tape is recoiled during one step, is caused to come to a standstill for the duration of one step to permit canceling the data at that location, and advance of the tape again for recording of the same data correctly in case of extraneous data recording.

Claim 3

In combination with a coder-reader apparatus operating in conjunction with a tape capable of carrying coded information while advancing step-by-step through said apparatus, said coder-reader apparatus including coding means for marking said tape with coded information at successive locations and reading means for reading said coded information simultaneously with said marking at an adjacent location as said tape moves in a step-by-step fashion, and communication means for supplying coded information to said coding means, a device for automatically correcting a recorded code erroneously marked on said tape comprising first logic means for detecting data erroneously marked on said tape and said logic means responsive to said first logic means for causing said tape to recoil by one step to enable correction of said data, wherein said coder-reader includes a plurality of marking members arranged to produce a coded indicia at each location on said tape in response to selective actuation thereof, said first logic means including a plurality of logic subgroups, each logic subgroup being connected to said coder-reader to receive a reading signal corresponding to the indicia produced by a respective marking member and to said communication means to receive a marking signal indicating the desired indicia to be produced by said respective marking member and including comparison means for each potential data location to indicate by a first signal the absence of an indicia when one is required and by a second signal the presence of an indicia when none is desired, wherein each logic subgroup includes a first logic inverter having the reading signal from said coder-reader connected to the input thereof and a second logic inverter having the marking signal from said communication means connected to the input thereof, a first AND gate receiving the reading signal and the output of said second logic inverter at inputs thereof to produce said second signal and a second AND gate receiving the marking signal and the output of said first logic inverter at inputs thereof to produce said first signal.

Claim 4

In combination with a coder-reader apparatus operating in conjunction with a tape capable of carrying coded information while advancing step-by-step through said apparatus, said coder-reader apparatus including coding means for marking said tape with coded information at successive locations and reading means for reading said coded information simultaneously with said marking at an adjacent location as said tape moves in a step-by-step fashion, and communication means for supplying coded information to said coding means, a device for automatically correcting a recorded code erroneously marked on said tape comprising first logic means for detecting data erroneously marked on said tape and said logic means responsive to said first logic means for causing said tape to recoil by one step to enable correction of said data, wherein said coder-reader includes a plurality of marking members arranged to produce a coded indicia at each location on said tape in response to selective actuation thereof, said first logic means including a plurality of logic subgroups, each logic subgroup being connected to said coder-reader to receive a reading signal corresponding to the indicia produced by a respective marking member and to said communication means to receive a marking signal indicating the desired indicia to be produced by said respective marking member and including comparison means for each potential data location to indicate by a first signal the absence of an indicia when one is required and by a second signal the presence of an indicia when none is desired, wherein each logic subgroup includes a first logic inverter having the reading signal from said coder-reader connected to the input thereof and a second logic inverter having the marking signal from said communication means connected to the input thereof, a first AND gate receiving the reading signal and the output of said second logic inverter at inputs thereof to produce said second signal and a second AND gate receiving the marking signal and the output of said first logic inverter at inputs thereof to produce said first signal.

Claim 5

In combination with a coder-reader apparatus operating in conjunction with a tape capable of carrying coded information while advancing step-by-step through said apparatus, said coder-reader apparatus including coding means for marking said tape with coded information at successive locations and reading means for reading said coded information simultaneously with said marking at an adjacent location as said tape moves in a step-by-step fashion, and communication means for supplying coded information to said coding means, a device for automatically correcting a recorded code erroneously marked on said tape comprising first logic means for detecting data erroneously marked on said tape and said logic means responsive to said first logic means for causing said tape to recoil by one step to enable correction of said data, wherein said coder-reader includes a plurality of marking members arranged to produce a coded indicia at each location on said tape in response to selective actuation thereof, said first logic means including a plurality of logic subgroups, each logic subgroup being connected to said coder-reader to receive a reading signal corresponding to the indicia produced by a respective marking member and to said communication means to receive a marking signal indicating the desired indicia to be produced by said respective marking member and including comparison means for each potential data location to indicate by a first signal the absence of an indicia when one is required and by a second signal the presence of an indicia when none is desired, wherein said second logic means includes a first OR gate receiving all of said first signals from said logic subgroups, a second OR gate receiving all of said second signals from said logic subgroups, a modulo 3 counter enabled by the output of said second OR gate and connected to said coder-reader to count the step periods of said tape, a modulo 2 counter enabled by the output of said first OR gate and connected to said coder-reader to count the step periods of said tape, a first flip-flop connected to said modulo 2 counter and said modulo 3 counter and producing a recoil signal at one output thereof and a mark authorization signal at the other output thereof, and a second flip-flop enabled by said reading signals to provide an enabling signal to each of said logic subgroups.

Claim 6

In combination with a coder-reader apparatus operating in conjunction with a tape capable of carrying coded information while advancing step-by-step through said apparatus, said coder-reader apparatus including coding means for marking said tape with coded information at successive locations and reading means for reading said coded information simultaneously with said marking at an adjacent location as said tape moves in a step-by-step fashion, and communication means for supplying coded information to said coding means, a device for automatically correcting a recorded code erroneously marked on said tape comprising first logic means for detecting data erroneously marked on said tape and said logic means responsive to said first logic means for causing said tape to recoil by one step to enable correction of said data, wherein said coder-reader includes a plurality of marking members arranged to produce a coded indicia at each location on said tape in response to selective actuation thereof, said first logic means including a plurality of logic subgroups, each logic subgroup being connected to said coder-reader to receive a reading signal corresponding to the indicia produced by a respective marking member and to said communication means to receive a marking signal indicating the desired indicia to be produced by said respective marking member and including comparison means for each potential data location to indicate by a first signal the absence of an indicia when one is required and by a second signal the presence of an indicia when none is desired, wherein said second logic means includes a first OR gate receiving all of said first signals from said logic subgroups, a second OR gate receiving all of said second signals from said logic subgroups, a modulo 3 counter enabled by the output of said second OR gate and connected to said coder-reader to count the step periods of said tape, a modulo 2 counter enabled by the output of said first OR gate and connected to said coder-reader to count the step periods of said tape, a first flip-flop connected to said modulo 2 counter and said modulo 3 counter and producing a recoil signal at one output thereof and a mark authorization signal at the other output thereof, and a second flip-flop enabled by said reading signals to provide an enabling signal to each of said logic subgroups.

Claim 7

The combination according to claim 3 wherein each logic subgroup includes a first logic inverter having the reading signal from said coder-reader connected to the input thereof and a second logic inverter having the marking signal from said communication means connected to the input thereof, a first AND gate receiving the reading signal and the output of said second logic inverter at inputs thereof to produce said second signal and a second AND gate receiving the marking signal and the output of said first logic inverter at inputs thereof to produce said first signal.

Claim 8

The combination according to claim 4 wherein said second logic means further includes a third AND gate connected to said modulo 2 counter and said modulo 3 counter to provide a character call signal to said communication means when no error has been detected by said first logic means.

Claim 9

The combination defined in claim 5 wherein said second logic means further includes a third OR gate connected to the outputs of said first and second OR gates to apply an error signal to said communication means.