US3870830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic telephone dialer
Assignee: TAPIEI FA KUEI LIU
•
Filing: 1974-01-14
•
Granted: 1975-03-11
•
Expires: 1994-01-14
Abstract
Abstract A system is disclosed for automatic dialing of a telephone number which is indicated on a prepared card by a series of apertures located in predetermined positions and representative of the number desired to be called. At the end of a dialing sequence, the receiver set is connected to the telephone line for voice communication. An automatic re-dialing circuit is provided in the event that it is desired to re-dial the number if it is busy. Further, provisions are made for automatic transferring of an incoming call in accordance with the information on an apertured card left in the card slot on the console. A conference call may be arranged by automatic dialing of a second number and communicating it, together with the receiver set at the user position, with the incoming call. An alarm system may also be coupled into the telephone system and communicated to any number as determined by a card left in the card slot when an alarm is signalled. The automatic dialing feature may also be used to remotely control a switch located at the user position from an incoming telephone line.
Inventors
- 👤 Fa-Kuei Liu Tapiei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:54
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/02; G06K13/08; G06K13/0806; G06K13/0825; H; H04; H04M; H04M1/00; H04M1/26; H04M1/27; H04M1/274; H04M1/278
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
241 words
A system for automatic telephone dialing comprising: a card defining a plurality of apertures representative of dialing information; sensing means including a source of light on one side of said apertured card and an array of photoconductor elements on the other side of said card for generating sets of electrical signals in sequence and representative respectively in binary coded decimal notation of the decimal digits of the number to be dialed; decoder circuit means receiving said sets of signals for storing the same and including comparison circuit means responsive to sets of binary-coded decimal signals; pulse generator means responsive to a start signal for generating a train of dial pulse signals and for feeding said train of dial pulse signals to said comparison circuit means of said decoder means and to a telephone terminal for transmitting dial pulses, said decoder means accumulating said train of pulses and said comparison circuit means comparing the accumulated pulses with the binary-coded decimal signals from said diode array for terminating said pulse generator when the number of pulses transmitted thereby equals the numBer represented by said binarycoded decimal signals from said photoconductor array; and controller circuit means for initiating said pulse generator means when it is desired to dial a number, said decoder means being further responsive to the end of a dialed digit sequence to terminate the generation of dial pulses by said pulse generator and to connect the telephone line for signal communication.
Claim 2
Independent Claim
241 words
A system for automatic telephone dialing comprising: a card defining a plurality of apertures representative of dialing information; sensing means including a source of light on one side of said apertured card and an array of photoconductor elements on the other side of said card for generating sets of electrical signals in sequence and representative respectively in binary coded decimal notation of the decimal digits of the number to be dialed; decoder circuit means receiving said sets of signals for storing the same and including comparison circuit means responsive to sets of binary-coded decimal signals; pulse generator means responsive to a start signal for generating a train of dial pulse signals and for feeding said train of dial pulse signals to said comparison circuit means of said decoder means and to a telephone terminal for transmitting dial pulses, said decoder means accumulating said train of pulses and said comparison circuit means comparing the accumulated pulses with the binary-coded decimal signals from said diode array for terminating said pulse generator when the number of pulses transmitted thereby equals the numBer represented by said binarycoded decimal signals from said photoconductor array; and controller circuit means for initiating said pulse generator means when it is desired to dial a number, said decoder means being further responsive to the end of a dialed digit sequence to terminate the generation of dial pulses by said pulse generator and to connect the telephone line for signal communication.
Claim 3
Independent Claim
241 words
A system for automatic telephone dialing comprising: a card defining a plurality of apertures representative of dialing information; sensing means including a source of light on one side of said apertured card and an array of photoconductor elements on the other side of said card for generating sets of electrical signals in sequence and representative respectively in binary coded decimal notation of the decimal digits of the number to be dialed; decoder circuit means receiving said sets of signals for storing the same and including comparison circuit means responsive to sets of binary-coded decimal signals; pulse generator means responsive to a start signal for generating a train of dial pulse signals and for feeding said train of dial pulse signals to said comparison circuit means of said decoder means and to a telephone terminal for transmitting dial pulses, said decoder means accumulating said train of pulses and said comparison circuit means comparing the accumulated pulses with the binary-coded decimal signals from said diode array for terminating said pulse generator when the number of pulses transmitted thereby equals the numBer represented by said binary-coded decimal signals from said photoconductor array; and controller circuit means for initiating said pulse generator means when it is desired to dial a number, said decoder means being further responsive to the end of a dialed digit sequence to terminate the generation of dial pulses by said pulse generator and to connect the telephone line for signal communication.
Claim 4
Independent Claim
241 words
A system for automatic telephone dialing comprising: a card defining a plurality of apertures representative of dialing information; sensing means including a source of light on one side of said apertured card and an array of photoconductor elements on the other side of said card for generating sets of electrical signals in sequence and representative respectively in binary coded decimal notation of the decimal digits of the number to be dialed; decoder circuit means receiving said sets of signals for storing the same and including comparison circuit means responsive to sets of binary-coded decimal signals; pulse generator means responsive to a start signal for generating a train of dial pulse signals and for feeding said train of dial pulse signals to said comparison circuit means of said decoder means and to a telephone terminal for transmitting dial pulses, said decoder means accumulating said train of pulses and said comparison circuit means comparing the accumulated pulses with the binary-coded decimal signals from said diode array for terminating said pulse generator when the number of pulses transmitted thereby equals the numBer represented by said binary-coded decimal signals from said photoconductor array; and controller circuit means for initiating said pulse generator means when it is desired to dial a number, said decoder means being further responsive to the end of a dialed digit sequence to terminate the generation of dial pulses by said pulse generator and to connect the telephone line for signal communication.
Claim 5
Dependent Claim
104 words
The apparatus of claim 1 wherein said photoconductor diode array comprises a plurality of photoconductor diodes arranged in columns and rows corresponding to the location of possible apertures on said card when it is in operative relation with said system, each row being representative of a binary-coded decimal group for a dialed digit; said system further comprising sequence counter means responsive to said pulse generator for sequentially energizing said rows of photoconductor diodes in predetermined sequence corresponding to the sequence of digits to be dialed, whereby each row of diodes simultaneously generates a group of binary signals representative of a decimal digit being dialed.
Claim 6
Dependent Claim
41 words
The apparatus of claim 2 wherein said decoder means further includes a gate circuit responsive to a preselected group of input signals representative of the end of the dialing sequence for terminating said pulse generator and for resetting said sequence counter.
Claim 7
Dependent Claim
60 words
The system of claim 2 wherein said sequence counter circuit means comprises an input binary counter circuit for sequentially counting the number of decimal digits dialed; and binary-to-decimal converter circuit means responsive to the output signals of said input counter circuit means and having a plurality of output lines connected respectively to the rows of diodes in said diode array.
Claim 8
Dependent Claim
53 words
The apparatus of claim 1 wherein said controller circuit means further comprises re-dial circuit means for periodically re-actuating said pulse generator to re-dial the number represented by a card left in the system; and re-dial switch means settable by an operator for selectively actuating or disabling said re-dial circuit means in said controller.
Claim 9
Dependent Claim
209 words
The system of claim 1 further comprising sequence counter circuit means for sequentially energizing rows of said diode array, each row being responsive to a different decimal digit location on said card; said decoder circuit means including input amplifier means, one for each column of said diode array; comparison logic circuit means including a plurality of gates having two inputs, each gate receiving as one input one of the outputs of said input amplifier means representative of a binary digit from said diode array; binary counter circuit means receiving the pulse of said pulse generator for each digit, said comparison gate means having the other input of each individual gate responsive to the corresponding output digit of said binary counter circuit means; and a gate circuit responsive to the output signals of said comparison circuit means when the number of sequential pulses generated by said pulse generator means is equal to the binary coded decimal signal received in said diode array to generate a transient pulse for terminating temporarily said pulse generator means, whereby said pulse generator means resets said input counter circuit means of said decoder circuit means and increments the input counter circuit of said sequence counter circuit means and continues operation for the next dialed digit.
Claim 10
Dependent Claim
47 words
The system of claim 6 wherein said decoder circuit means further includes a second gate responsive to the output of said comparison gate circuit means for sensing a predetermined signal representing the end of a dialed digit sequence for resetting said controller to terminate the dialed sequence.
Claim 11
Dependent Claim
51 words
The system of claim 1 further comprising telephone terminal means including a first and a second line; automatic transfer circuit means responsive to the ring circuit of one telephone line for actuating a dial sequence on the other telephone line and for connecting the incoming call to a selected subscriber line.
Claim 12
Dependent Claim
64 words
The system of claim 8 wherein said automatic transfer circuit means includes a ring pick-up circuit associated with each line and responsive to a ringing current therein including a delay circuit and a latching switch, each latching switch being connected to said controller circuit means for initiating automatic dialing to a number on said second line represented by a card placed in said system.
Claim 13
Dependent Claim
47 words
The system of claim 9 wherein said automatic transfer circuit means further comprises pulse generator means responsive to the initiation of an automatic dialed number when said automatic transfer circuit means is actuated for disconnecting the line called after a predetermined time and for resetting said system.
Claim 14
Dependent Claim
38 words
The system of claim 1 further comprising visual means responsive to a voice frequency amplifier receiving incoming audio signals and to said pulse generator for giving a visual indication either of dialed pulses or of incoming voice signals.
References Cited (Backward Citations)
US3111562A
Cited
US3328589A
Cited
US3727010A
Cited
US3510593A
Cited
US3592972A
Cited
US3592973A
Cited
US3611292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |