Telephone number generator

Claim 1

An apparatus for generating signals corresponding to digits of a selected telephone number on a telephone line comprising a single push-button keyboard including 10 push-button switches, switch means for selecting a record mode or a call mode, memory means for receiving and storing representations of a plurality of telephone numbers in selected locations of the memory means, each of the plurality of telephone numbers having a plurality of digits, means responsive to a first operation of the push-button switches when the switch means is in the record mode or the call mode for selecting a location in the memory means, means responsive to subsequent operation of the push-button switches in accordance with the selected telephone number when the switch means is in the record mode for storing representations of the selected telephone number in the selected location in the memory means, means responsive to the receipt of a representation of a digit for producing signals on the telephone line corresponding to the received representation of the digit, and means responsive to the memory location selecting means when the switch means is in the call mode for applying the representation of digits from the selected location to the signal producing means.

Claim 2

An apparatus for generating signals corresponding to digits of a selected telephone number on a telephone line comprising a single push-button keyboard including 10 push-button switches, switch means for selecting a record mode or a call mode, memory means for receiving and storing representations of a plurality of telephone numbers in selected locations of the memory means, each of the plurality of telephone numbers having a plurality of digits, means responsive to a first operation of the push-button switches when the switch means is in the record mode or the call mode for selecting a location in the memory means, means responsive to subsequent operation of the push-button switches in accordance with the selected telephone number when the switch means is in the record mode for storing representations of the selected telephone number in the selected location in the memory means, means responsive to the receipt of a representation of a digit for producing signals on the telephone line corresponding to the received representation of the digit, and means responsive to the memory location selecting means when the switch means is in the call mode for applying the representation of digits from the selected location to the signal producing means.

Claim 11

An apparatus for applying trains of pulses corresponding to digits of a selected telephone number to a telephone line, comprising a single push-button keyboard including ten push-button switches capable of being selected in accordance with selected digits; encoding means responsive to operation of the push-button switches for producing parallel binary representations relating to the selected digits; function control switch means for selecting a manual mode, a record mode or a call mode; a first random access memory having parallel binary inputs for receiving binary representations, a plurality of storage locations for storing binary representations, and parallel binary outputs; gating means operated by the function control switch means in the manual mode for applying the binary representations from the encoding means to the first-memory inputs; write means responsive to parallel binary representations of digits sequentially applied to the first-memory inputs for selecting respective sequential storage locations in the first memory to store the binary representations applied to the first-memory inputs in the respective sequential first-memory storage locations; read means operable to apply parallel representations of stored binary representations in the respective sequential first-memory storage locations to the first-memory outputs; a first counter having means for receiving parallel binary representations from the first-memory outputs to produce a corresponding count in the counter; oscillator means for generating telephone dialing pulses; means for applying the dialing pulses to the first counter to change the count in the first counter; control means responsive to the count in the first counter being other than a predetermined count for enabling the oscillator means; said control means being responsive to the count in the first counter being equal to the predetermined count for disabling the oscillator means and for operating the read means; a second random access memory having a serial binary input, a plurality of storage locations for storing binary representations and a serial binary output; a second counter for selecting individual second-memory storage locations; means responsive to a first operation of the push-button switches when the function control switch means is in the record or call mode for setting the second counter to a selected count which is spaced from other selected counts by at least the number of bits in a telephone number; means responsive to subsequent operation of the push-button switches when the function control switch means is in the record mode for converting the parallel binary coded decimal representations from the encoding means to serial binary representations; clock means for sequentially stepping the count in the second counter through four counts; write means for applying the serial binary representations from the parallel-to-serial converting means to the second-memory serial input in synchronism with the clock means; means connected between the second-memory serial output and the first-memory parallel inputs for converting serial binary representations to parallel binary representations; and read means responsive to termination of the first operation of the push-button switches when the function control switch means is in the call mode for operating the clock means and the serial-to-parallel converting means in synchronism.

Claim 12

An apparatus for applying trains of pulses corresponding to digits of a selected telephone number to a telephone line, comprising a single push-button keyboard including ten push-button switches capable of being selected in accordance with selected digits; encoding means responsive to operation of the push-button switches for producing parallel binary representations relating to the selected digits; function control switch means for selecting a manual mode, a record mode or a call mode; a first random access memory having parallel binary inputs for receiving binary representations, a plurality of storage locations for storing binary representations, and parallel binary outputs; gating means operated by the function control switch means in the manual mode for applying the binary representations from the encoding means to the first-memory inputs; write means responsive to parallel binary representations of digits sequentially applied to the first-memory inputs for selecting respective sequential storage locations in the first memory to store the binary representations applied to the first-memory inputs in the respective sequential first-memory storage locations; read means operable to apply parallel representations of stored binary representations in the respective sequential first-memory storage locations to the first-memory outputs; a first counter having means for receiving parallel binary representations from the first-memory outputs to produce a corresponding count in the counter; oscillator means for generating telephone dialing pulses; means for applying the dialing pulses to the first counter to change the count in the first counter; control means responsive to the count in the first counter being other than a predetermined count for enabling the oscillator means; said control means being responsive to the count in the first counter being equal to the predetermined count for disabling the oscillator means and for operating the read means; a second random access memory having a serial binary input, a plurality of storage locations for storing binary representations and a serial binary output; a second counter for selecting individual second-memory storage locations; means responsive to a first operation of the push-button switches when the function control switch means is in the record or call mode for setting the second counter to a selected count which is spaced from other selected counts by at least the number of bits in a telephone number; means responsive to subsequent operation of the push-button switches when the function control switch means is in the record mode for converting the parallel binary coded decimal representations from the encoding means to serial binary representations; clock means for sequentially stepping the count in the second counter through four counts; write means for applying the serial binary representations from the parallel-to-serial converting means to the second-memory serial input in synchronism with the clock means; means connected between the second-memory serial output and the first-memory parallel inputs for converting serial binary representations to parallel binary representations; and read means responsive to termination of the first operation of the push-button switches when the function control switch means is in the call mode for operating the clock means and the serial-to-parallel converting means in synchronism.