Patent US4597707A successfully refreshed from Google Patents.
US3801743A
Expired / Lapsed
US
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Device for automatically establishing connections from a sending station over a telecommunications network
Assignee: Gylling and Co AB
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Filing: 1972-06-20
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Granted: 1974-04-02
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Expires: 1992-06-20
Abstract
Abstract A device for automatically establishing connections from a sending station to receiving stations over a telecommunications network having automatic exchanges and for transmitting signals to a receiving station over a connection thus established. Particularly, a device of this kind connects to a public telephone network having automatic switching stations, the device being connected to an ordinary subscriber''s line which connects the sending station with an automatic switching station.
Inventors
- 👤 G Westbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:47
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
494 words
A device for automatically establishing connections from a sending station to receiving stations over a telecommunications network having automatic exchanges and for transmitting signals to a receiving station over a connection thus established, said device comprising means for connecting thereto sensing means to be operated in response to occurrences on which information is to be sent to a receiving station, connecting means for automatically connecting the device to a transmission channel leading to a switching center in the automatic telecommunications network, a pulse generator, a code setting unit for the optional setting of an identifying code of a desired receiving station and the setting of a desired code signal to be transmitted to the receiving station, said code setting unit coMprising a first set of conductors and a second set of conductors and connecting means for connecting any one of the conductors of the first set of conductors to any one of the conductors of the second set of conductors and means for applying a potential to the conductors of one set of conductors, said first set of conductors comprising several groups of conductors, said groups being allotted to different functions such as the transmission of area numbers, the transmission of subscribers numbers and the transmission of information signals, characterized in that the device further comprises a first counter, control means for connecting said groups of conductors of said first set of conductors in turn to said first counter so that output terminals of said first counter are connected to separate ones of the conductors of the connected group, and said first counter when being stepped forwards in turn marks the conductors of this group, a second counter having its connections connected to separate ones of the conductors of said second set of conductors, said second counter being stepped forwards in response to pulses from said pulse generator, so that the conductors of the second set of conductors are in turn marked by the second counter, a pulse transmission device which is connectable to said transmission channel and controlled by said first and second counters, so that for each conductor marked by said first counter in the first set of conductors a pulse train is transmitted, the number of pulses in each pulse train being determined by the interconnection between the marked conductor of the first set of conductors and the conductors of the second set of conductors, a first resetting device for resetting said second counter after each completed pulse train, a stepping device for stepping said first counter after each completed pulse train so that the next conductor in the same group of conductors of the first set of conductors is marked, a second resetting device for resetting said first counter after it has marked a predetermined number of conductors of the connected group, and said control means being operative after the first counter has marked the conductors of a group to connect the next group of conductors to said first counter.
Claim 2
Independent Claim
494 words
A device for automatically establishing connections from a sending station to receiving stations over a telecommunications network having automatic exchanges and for transmitting signals to a receiving station over a connection thus established, said device comprising means for connecting thereto sensing means to be operated in response to occurrences on which information is to be sent to a receiving station, connecting means for automatically connecting the device to a transmission channel leading to a switching center in the automatic telecommunications network, a pulse generator, a code setting unit for the optional setting of an identifying code of a desired receiving station and the setting of a desired code signal to be transmitted to the receiving station, said code setting unit coMprising a first set of conductors and a second set of conductors and connecting means for connecting any one of the conductors of the first set of conductors to any one of the conductors of the second set of conductors and means for applying a potential to the conductors of one set of conductors, said first set of conductors comprising several groups of conductors, said groups being allotted to different functions such as the transmission of area numbers, the transmission of subscribers numbers and the transmission of information signals, characterized in that the device further comprises a first counter, control means for connecting said groups of conductors of said first set of conductors in turn to said first counter so that output terminals of said first counter are connected to separate ones of the conductors of the connected group, and said first counter when being stepped forwards in turn marks the conductors of this group, a second counter having its connections connected to separate ones of the conductors of said second set of conductors, said second counter being stepped forwards in response to pulses from said pulse generator, so that the conductors of the second set of conductors are in turn marked by the second counter, a pulse transmission device which is connectable to said transmission channel and controlled by said first and second counters, so that for each conductor marked by said first counter in the first set of conductors a pulse train is transmitted, the number of pulses in each pulse train being determined by the interconnection between the marked conductor of the first set of conductors and the conductors of the second set of conductors, a first resetting device for resetting said second counter after each completed pulse train, a stepping device for stepping said first counter after each completed pulse train so that the next conductor in the same group of conductors of the first set of conductors is marked, a second resetting device for resetting said first counter after it has marked a predetermined number of conductors of the connected group, and said control means being operative after the first counter has marked the conductors of a group to connect the next group of conductors to said first counter.
Claim 3
Dependent Claim
70 words
A device as claimed in claim 1, characterized in that it comprises a signal receiver which is automatically connectable to said transmission channel for the reception of signals arriving over this transmission channel and designed to produce control signals in response to such incoming signals, and that said control device is arranged to receive said control signals and to start the transmission of signals under control of these control signals.
Claim 4
Dependent Claim
49 words
A device as claimed in claim 2, characterized in that said control device comprises means for resetting the device to its initial state if one or more of said incoming signals fails to arrive, and for starting a new attempt of establishing the desired connection after a predetermined time.
Claim 5
Dependent Claim
34 words
A device as claimed in claim 3, characterized in that it comprises a third counter for counting the number of said attempts and for preventing further attempts when this number reaches a predetermined value.
Claim 6
Dependent Claim
188 words
A device as claimed in claim 4, characterized in that said control device comprises a fourth counter, in the following referred to as program counter, which is provided with a plurality of outputs which are allotted to different functions required for the establishment of a connection and for the transmission of message signals, such as waiting for dialing tone from the exchange, the transmission of area number, waiting for a new dialing tone, transmission of a subscriber''s number, the transmission of start signal to the receiving station, waiting for a reply signal from the receiving station, transmission of coded message signals and waiting for stop signal from the receiving station, and that the device further comprises a program logic responsive to said incoming signals to step thE program counter from positions for waiting for incoming signals to positions for the transmission of digit signals and message signals, said program counter being designed to be stepped from positions for signal transmission to positions for the reception of incoming signals after the transmission of a group of signals corresponding to a group of conductors of said first set of conductors.
Claim 7
Dependent Claim
23 words
A device as claimed in claim 5, characterized in that it comprises optionally connectable circuits for inhibiting one or more of said functions.
References Cited (Backward Citations)
US3588362A
Cited
US3702902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |