Patent US3903376A successfully refreshed from Google Patents.
US3903376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operating device for push button-dialled telephone
Assignee: Panasonic Holdings Corp
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Filing: 1973-10-02
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Granted: 1975-09-02
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Expires: 1993-10-02
Abstract
Abstract An operating device for a push button dialled telephone in which pressers driven by electromagnetic solenoids are provided opposite to push buttons of the push button dialled telephone and the push buttons are depressed as desired with a power supply appropriately controlled by said electromagnetic solenoids. Dialling operation can be performed, without touching a finger directly on the push buttons, by means of an additional device for generating automatically a variety of controlled electrical signals.
Inventors
- 👤 Akira Nishikiori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:14
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/26; H04M1/27; H04M1/274; H04M1/276
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
297 words
In a repertory telephone dialling system, apparatus for recording telephone dialling instruction signals onto a recording medium, comprising: recording means for recording information onto said recording medium, wherein said recording means comprises first and second recording portions for independently recording information onto corresponding first and second portions of said recording medium; a matrix circuit; a plurality of information signal generating means coupled to corresponding inputs of said matrix circuit; a plurality of first logic AND circuits having first inputs coupled to corresponding outputs of said matrix circuit; a timing circuit having its output coupled in common to second inputs of said first logic AND circuits; means coupling outputs of said information signal generating means in common to an input of said timing circuit; a parallel input-serial output shift register having its inputs coupled to the outputs of said first logic AND circuits; pulse generating means for generating a predetermined plurality of pulses having its input coupled to the output of said timing circuit and a first output coupled to a shift instruction input of said shift register, wherein said pulse generating means generates said plurality of pulses at said first output and a reference pulse at a second output thereof and said first and second pulse generating means outputs are coupled to said second recording means portion such that output signals generated by said pulse generating means are recorded on said second portion of said recording medium; and a second AND logic circuit having a first input coupled to said shift register output, a second input coupled to said first output of said pulse generating means and its output coupled to an input of said first recording means portion for recording output signals from said shift register and from said pulse generating means onto said recording medium.
Claim 2
Dependent Claim
297 words
In a repertory telephone dialling system, apparatus for recording telephone dialling instruction signals onto a recording medium, comprising: recording means for recording information onto said recording medium, wherein said recording means comprises first and second recording portions for independently recording information onto corresponding first and second portions of said recording medium; a matrix circuit; a plurality of information signal generating means coupled to corresponding inputs of said matrix circuit; a plurality of first logic AND circuits having first inputs coupled to corresponding outputs of said matrix circuit; a timing circuit having its output coupled in common to second inputs of said first logic AND circuits; means coupling outputs of said information signal generating means in common to an input of said timing circuit; a parallel input-serial output shift register having its inputs coupled to the outputs of said first logic AND circuits; pulse generating means for generating a predetermined plurality of pulses having its input coupled to the output of said timing circuit and a first output coupled to a shift instruction input of said shift register, wherein said pulse generating means generates said plurality of pulses at said first output and a reference pulse at a second output thereof and said first and second pulse generating means outputs are coupled to said second recording means portion such that output signals generated by said pulse generating means are recorded on said second portion of said recording medium; and a second AND logic circuit having a first input coupled to said shift register output, a second input coupled to said first output of said pulse generating means and its output coupled to an input of said first recording means portion for recording output signals from said shift register and from said pulse generating means onto said recording medium.
Claim 3
Dependent Claim
233 words
In a repertory telephone dialling system, apparatus for recording telephone dialling instruction signals onto a recording medium, comprising: recordinG means for recording information onto said recording medium; a matrix circuit; a plurality of information signal generating means coupled to corresponding inputs of said matrix circuit; a plurality of first logic AND circuits having first inputs coupled to corresponding outputs of said matrix circuit; a timing circuit having its output coupled in common to second inputs of said first logic AND circuits; means coupling outputs of said information signal generating means in common to an input of said timing circuit; a parallel input-serial output shift register having its inputs coupled to the outputs of said first logic AND circuits; pulse generating means for generating a predetermined plurality of pulses having its input coupled to the output of said timing circuit and an output coupled to a shift instruction input of said shift register; a second AND logic circuit having a first input coupled to an output of said shift register and a second input coupled to an output of said pulse generating means, and an output coupled to said recording means; and a third AND logic circuit having a first input coupled to said shift register output through an inverter circuit, a second input coupled directly to said pulse generating means output, and an output coupled to said recording means through an inverter circuit.
Claim 4
Dependent Claim
233 words
In a repertory telephone dialling system, apparatus for recording telephone dialling instruction signals onto a recording medium, comprising: recordinG means for recording information onto said recording medium; a matrix circuit; a plurality of information signal generating means coupled to corresponding inputs of said matrix circuit; a plurality of first logic AND circuits having first inputs coupled to corresponding outputs of said matrix circuit; a timing circuit having its output coupled in common to second inputs of said first logic AND circuits; means coupling outputs of said information signal generating means in common to an input of said timing circuit; a parallel input-serial output shift register having its inputs coupled to the outputs of said first logic AND circuits; pulse generating means for generating a predetermined plurality of pulses having its input coupled to the output of said timing circuit and an output coupled to a shift instruction input of said shift register; a second AND logic circuit having a first input coupled to an output of said shift register and a second input coupled to an output of said pulse generating means, and an output coupled to said recording means; and a third AND logic circuit having a first input coupled to said shift register output through an inverter circuit, a second input coupled directly to said pulse generating means output, and an output coupled to said recording means through an inverter circuit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |