Portable automatic number outpulser

• US 4,126,768 A
• Filed: 06/27/1977
• Issued: 11/21/1978
• Est. Priority Date: 06/27/1977
• Status: Expired due to Term

• Current Assignee: Bell Telephone Laboratories, Inc. (Nokia Corporation)
• Original Assignee: Bell Telephone Laboratories, Inc. (Nokia Corporation)
• Inventors: Grenzow, Rolland L.
• Primary Examiner(s): Claffy, Kathleen H.
• Assistant Examiner(s): Brigance, Gerald L.
• Application Number:
  US05/810,152
• Time in Patent Office: 512 Days
• Field of Search: 179/90 R, 179/90 B, 179/90 BD, 179/90 BB, 179/90 AN, 179/90 G, 179/90 DP, 179/2 C, 179/1 C, 340/149 R, 340/149 A, 235/61.7, 340/164 R
• US Class Current: 379/357.03
• CPC Class Codes: G06K 19/0728 the arrangement being an optical or sound-based communication interface
• CPC Class Codes: H04M 1/275 implemented by means of portable electronic directories

Abstract

An automatic, portable digit outpulser for use with a telephone is disclosed. In one preferred embodiment, the outpulser resembles a credit card encasing electronic circuitry and having a low-profile acoustic device mounted on one surface of the card for acoustically coupling the outpulser to the transmitter of a telephone. Optical and mechanical coupling arrangements are also disclosed. The electronic circuitry includes a memory for storing representations of telephone digits to be outpulsed and multifrequency signal generating circuitry for generating audio frequency signals, similar to those generated by a standard telephone equipped with a multifrequency key set, in accordance with the stored digit representations. The memory also contains control data words which are individually alternated in sequence with digit words. The signal generating circuitry is directly responsive to the digit and control words for generating both digit signals and interdigital timing periods.

Claims

1. In an automatic digit outpulser for use in conjunction with a telephone, comprising

a portable electronic card having electronic circuitry encased within the card,

a low-profile acoustic device mounted in the card and arranged for accoustically coupling the card to a transmitter of the telephone and, in the electronic circuitry,

means for storing representations of digits to be outpulsed,

means for converting the stored representations into audible frequency output signals, and

means for transmitting the output signals to the acoustic device, the improvement comprising a plurality of first storage words containing the stored digit representations, and a plurality of second storage words containing information for controlling the generation of interdigital timing periods, with ones of the first storage words being arranged in a prescribed sequence with ones of the second storage words.

2. The invention of claim 1 wherein the circuitry further comprises

oscillator means for producing address signals at prescribed intervals to read the storage words sequentially, and the converting means comprises

means responsive to the stored representations in one of the first storage words being addressed for generating the audible frequency output signals in accordance therewith during the interval in which said one first storage word is addressed, said converting means being further responsive to the control information in ones of the second storage words for generating interdigital timing intervals while said ones of the second storage words are being addressed.

3. The invention of claim 2 wherein each of the first and second storage words contains a plurality of storage bits, and

the generating means includes a plurality of tone generators responsive to a first prescribed state of different ones of the storage bits for generating different prescribed output tone signals, whereby in response to a second prescribed state in each of the bit locations of one of the second storage words, the generating means generates no output signal to form an interdigital timing interval.

4. The invention of claim 1 wherein the outpulser further comprises a plurality of switches mounted on the card, which are individually and manually actuatable to preset a starting address of the storing means for selecting one of a plurality of different sequences of digits to be outpulsed.

5. The invention of claim 1 wherein the outpulser further comprises

means operable for supplying power to the electronic circuitry, and

means responsive to an operation of the power supplying means for controlling the storing and converting means to generate an alerting signal to the acoustic device.

6. The invention of claim 1 wherein

the storing means comprises a third storage word containing control data, and

the circuitry further comprises counter means for addressing the storage words, wherein the counter means includes means responsive to an operation of the power supplying means for presetting the count state of the counter means, thereby to address said third storage word for causing the converting means to generate the alerting signal responsive to the control data.

7. The invention of claim 1 wherein the storing means further comprises means for controlling the converting means to generate an alerting signal to the acoustic device upon the completion of outpulsing of digit signals.

8. A portable automatic digit outpulsing device for use in conjunction with a telephone, comprising electronic circuitry encased within the device,

means affixed to the device for coupling the electronic circuitry to the telephone,

said electronic circuitry including

a memory for alternately storing in sequential memory locations coded representations of digits to be outpulsed to the telephone and first control signals,

an oscillator for generating address signals to the memory to read sequentially the contents of the memory locations,

multifrequency signal generating means,

electronic switch means responsive to the coded representations of digits for controlling the generating means to generate multifrequency signals to the coupling means in accordance with the coded representations of digits,

wherein said multifrequency signal generating means and said electronic switch means are responsive to the first control signals for generating interdigital intervals.

9. A portable device having electronic circuitry encased therein for use in conjunction with a telephone, said electronic circuitry comprising

multifrequency generating means controllable for selectively generating in combination or singularly a plurality of single frequency signals,

storage means having a plurality of storage words each individually addressable and each having a plurality of storage bits each for controlling the generation of a different single frequency signal by the multifrequency generating means, wherein each of a plurality of first words of the storage means has at least two of its storage bits set to a prescribed state defining a multifrequency output signal to be generated representative of a telephone digit, and wherein each of a plurality of second words of the storage means located alternately and sequentially with respect to each of the first words has its respective bit locations set to another prescribed state for controlling the multifrequency generating means to generate no output signal, and

oscillator means for generating address signals to read the storage words sequentially at prescribed intervals, and wherein the device comprises

means for coupling the output signals from the multifrequency generating means to the telephone.

10. A portable digit outpulser for use with a telephone having a transmitter, comprising

a memory containing a plurality of first and second storage words, individual ones of said first storage words being arranged alternately in sequence with individual ones of said second storage words,

means for sequentially addressing the storage words,

means responsive to information contained in each said first word of the memory for generating a multifrequency output signal representing a telephone digit, and responsive to information contained in each said second word for generating an interdigital timing period, and

means for coupling the multifrequency output signals to the telephone.

11. The invention of claim 10 wherein the coupling means comprises

an acoustic device mounted on the outpulser and arranged to be placed in proximity with the transmitter to couple acoustically the multifrequency output signals to the transmitter.

12. The invention of claim 10 wherein the telephone comprises optical signal receiving means, and

the coupling means comprises optical transmitting means modulated in accordance with the multifrequency output signals, whereby the optical transmitting means is placed in optical alignment with the optical receiving means to couple the multifrequency signals to the telephone.

13. The invention of claim 12 wherein the outpulser further comprises

proximity switch means operable to activate the outpulser when the outpulser is in optical coupling alignment with the optical receiving means.

14. The invention of claim 10 wherein the telephone comprises metallic contact receiving means, and the coupling means comprises

a plurality of metallic contacts mounted on an external surface of the outpulser and adapted to be engaged with the receiving means on the telephone to couple the multifrequency output signals to the telephone.

15. A portable electronic device for use in conjunction with a telephone station comprising means for coupling signals from the device to the telephone and

logic circuitry encased within the device connected to the coupling means, said circuitry including

means for storing in alternate storage words first coded data designating audio frequency signals to be generated representative of digits and second control data,

means for sequentially addressing the first and second storage words,

means responsive to a receipt of the first data from one of the storage words for generating the audio frequency signals designated thereby and for transmitting the signals to the coupling means, and

means responsive to a receipt of the second data from one of the storage words for generating a prescribed time interval between individual transmissions of the signals to the coupling means.

16. The invention of claim 15 wherein each of the storage words contains a plurality of first bit locations each for controlling the generation of a different single frequency output signal by said generating means, and a second bit location for controlling the activation of said addressing means, and wherein the storing means comprises in sequence

a start word having its first bit locations set to a prescribed state combination for controlling the generating means to generate an alerting signal not representative of a valid telephone digit and its second bit location set to a prescribed state to activate the addressing means,

one of the first storage words having its first bit locations set to another prescribed state combination representative of a prescribed telephone digit, and its second bit location set to said prescribed state to activate the addressing means,

one of the second words having its first bit locations set to a third prescribed state combination to control the generating means to produce no output signal, and its second bit location set to said prescribed state,

followed in alternating sequence by other ones of said first and second storage words, the sequence ending with

a stop word having its first bit locations also set to a prescribed state combination for controlling the generating means to generate another alerting signal, and its second bit location set to the opposite of said prescribed state to control the deactivation of said addressing means.