Train pulse generator

Claim 2

A pulsing apparatus for generating a plurality of trains of pulses on a telephone line corresponding to selected numbers comprising a plurality of switches which may be selectively and sequentially operated in accordance with the selected numbers, memory means for receiving and storing representations of a plurality of numbers therein, means, responsive to operation of any of the plurality of switches, for operating the memory means to store representations of the respective selected numbers in the memory means, a counter, means for applying representations of the stored representations, in the same order as stored in the memory means, from the memory means to the counter to produce corresponding sequential counts in the counter, an oscillator including first and second gate means interconnected to form an astable multivibrator, means directly responsive to one of the first and second gate means for pulsing the telephone line, first control means connected to an input of one of the first and second gate means for enabling the oscillator in response to the application of a representation of each stored representation to the counter and for disabling the oscillator after a train of pulses on the telephone line corresponding to each count in the counter have been generated, second control means, responsive to the first control means disabling the oscillator, for operating the applying means to apply a representation of a stored representation from the memory means to the counter, and delay means for preventing the operation of the oscillator for a predetermined duration between successive trains of pulses.

Claim 3

A pulsing apparatus as defined in claim 1 wherein the delay means includes a one shot and third gate means connected between the first and second control means for delaying the operation of the second control means for the predetermined duration after the disabling of the oscillator, said one shot being triggered by the first control means and having an output connected to the third gate means for disabling the third gate means for the predetermined duration.

Claim 4

A pulsing apparatus as defined in claim 1 which includes means for preventing operation of the second control means when the last representation applied by the applying means to the counter from the means is the last stored representation in the memory means.

Claim 5

A pulsing apparatus as defined in claim 1 wherein there is included coding means for generating respective binary coded representations of the selected numbers in response to the selective operation of the plurality of switches, the memory means includes means for storing binary coded representations of numbers, and the counter includes binary counting means for receiving binary coded representations of numbers to produce a corresponding binary count in the counter.

Claim 6

A pulsing apparatus as defined in claim 4 wherein the first control means includes means for applying pulses from the oscillator to the counter to change the binary count of the counter, and means responsive to the binary count of the counter having a predetermined value for disabling the oscillator.

Claim 7

A telephone pulsing apparatus for generating a plurality of trains of pulses corresponding to selected numbers on a telephone line comprising a plurality of manual switches which may be selectively and sequentially operated in accordance with the selected numbers, binary coding means connecting the plurality of manual switches for producing binary coded numbers corresponding tO the selected numbers, a memory having a plurality of discrete storage locations, first addressing means operated when any of the switches is operated for storing the binary coded numbers in sequential discrete locations in the memory, a binary counter, second addressing means for sequentially applying one''s complements of the binary coded numbers from the sequential discrete locations of the memory to the counter to produce corresponding counts in the counter, an oscillator including first and second gate means interconnected to form an astable multivibrator, means directly responsive to one of the first and second gate means for pulsing the telephone line, means for applying pulses from the oscillator to the counter to add to the count in the counter, first control means connected between the counter and an input of one of the first and second gate means for applying a disable signal to the input of the latter one gate means when the count of the counter has a predetermined value to prevent the generation of pulses, delay means including a one shot triggered by the disable signal for producing a delay signal of a predetermined duration, and second control means enabled only during the presence of the disable signal and the absence of the delay signal for operating the second addressing means to apply a one''s complement of a binary coded number in the memory to the counter.

Claim 8

A telephone pulsing apparatus for generating a plurality of trains of pulses corresponding to selected numbers on a telephone line comprising a plurality of manual switches which may be selectively and sequentially operated in accordance with the selected numbers, binary coding means connecting the plurality of manual switches for producing binary coded numbers corresponding tO the selected numbers, a memory having a plurality of discrete storage locations, first addressing means operated when any of the switches is operated for storing the binary coded numbers in sequential discrete locations in the memory, a binary counter, second addressing means for sequentially applying one''s complements of the binary coded numbers from the sequential discrete locations of the memory to the counter to produce corresponding counts in the counter, an oscillator including first and second gate means interconnected to form an astable multivibrator, means directly responsive to one of the first and second gate means for pulsing the telephone line, means for applying pulses from the oscillator to the counter to add to the count in the counter, first control means connected between the counter and an input of one of the first and second gate means for applying a disable signal to the input of the latter one gate means when the count of the counter has a predetermined value to prevent the generation of pulses, delay means including a one shot triggered by the disable signal for producing a delay signal of a predetermined duration, and second control means enabled only during the presence of the disable signal and the absence of the delay signal for operating the second addressing means to apply a one''s complement of a binary coded number in the memory to the counter.

Claim 9

A pulsing apparatus as defined in claim 6 which includes coincidence means, sensing a coincidence of the last discrete location in the memory in which a binary coded number has been stored by the first addressing means with (b) the last discrete location in the memory from which the second addressing means has applied a one''s complement, for applying a hold signal to the second control means to prevent operation of the second control means until another binary coded number has been stored in another discrete location in the memory.

Claim 10

A telephone pulsing apparatus for generating a plurality of trains of pulses on a pair of telephone lines corresponding to selected numbers comprising a plurality of switches which may be selectively and sequentially operated in accordance with the selected numbers, memory means for receiving and storing representations of a plurality of numbers therein, means, responsive to operation of any of the plurality of switches, for operating the memory means to store representations of the respective selected numbers in the memory means, a counter, means for applying representations of the stored representations, in the same order as stored in the memory means, from the memory means to the counter to produce corresponding sequential counts in the counter, oscillator means for serially generating pulses on the pair of telephone lines, first control means for enabling the oscillator means in response to the receipt of a representation of a number by the counter and for disabling the oscillator means after a train of pulses corresponding to the count in the counter have been generated, a one shot triggered in response to the first control means disabling the oscillating means, gating means having a first input controlled by the one shot and a second input controlled by the first control means to disable the gating means when the one shot is triggered, and second control means operated by the gating means for operating the applying means when the oscillator means is disabled to apply a representation of a stored representation from the memory means to the counter.

Claim 11

A telephone pulsing apparatus for generating a plurality of trains of pulses on a pair of telephone lines corresponding to selected numbers comprising a plurality of switches which may be selectively and sequentially operated in accordance with the selected numbers, memory means for receiving and storing representations of a plurality of numbers therein, means, responsive to operation of any of the plurality of switches, for operating the memory means to store representations of the respective selected numbers in the memory means, a counter, means for applying representations of the stored representations, in the same order as stored in the memory means, from the memory means to the counter to produce corresponding sequential counts in the counter, oscillator means for serially generating pulses on the pair of telephone lines, first control means for enabling the oscillator means in response to the receipt of a representation of a number by the counter and for disabling the oscillator means after a train of pulses corresponding to the count in the counter have been generated, a one shot triggered in response to the first control means disabling the oscillating means, gating means having a first input controlled by the one shot and a second input controlled by the first control means to disable the gating means when the one shot is triggered, and second control means operated by the gating means for operating the applying means when the oscillator means is disabled to apply a representation of a stored representation from the memory means to the counter.

Claim 12

A pulsing apparatus as claimed in claim 8 including switch means for resetting the counter, said switch means being connected to the one shot for triggering the one shot.