US3949169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the transmission of push-pull signals
Assignee: Wincor Nixdorf International GmbH
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Filing: 1974-12-19
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Granted: 1976-04-06
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Expires: 1994-12-19
Abstract
Abstract A device for the transmission of digital push-pull signals with a push-pull transmitter and a push-pull receiver includes a push-pull directional coupler connected between the transmitter and the receiver for providing coupling pulses to set and reset the push-pull receiver, which may be designed as a bistable trigger stage, the push-pull signals to be transmitted being obtained from the outputs of the push-pull receiver. The directional coupler comprises an arrangement of at least five parallel conductors of which at least one conductor is grounded. One end of each conductor of a first pair of the pulse conductors is connected to a respective output terminal of the transmitter, while corresponding ends of another pair of pulse conductors are connected to the input terminals of the receiver, the other ends of the respective conductor pairs being bridged by respective impedances which correspond to the value of the surge impedances of the conductors.
Inventors
- 👤 Walter Braeckelmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:27
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H04L25/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
192 words
Apparatus for the transmission of digital push-pull signals, comprising: a push-pull transmitter for emitting driving pulses; a bistable push-pull receiver responsive to coupling pulses to emit push-pull signals to be transmitted; and a push-pull directional coupler interposed between said transmitter and said receiver, said push-pull directional coupler responsive to said driving pulses to produce coupling pulses to set and reset said receiver causing emission of said push-pull signals, said directional coupler comprising at least six parallel conductors which include a first pair of conductors each connected at one end thereof to said transmitter, a second pair of conductors each connected at one end thereof to said receiver, the conductors of said first and second pairs symmetrical about a plane, and a pair of grounded conductors arranged outside of said first and second pairs of conductors and symmetrically about the same plane, each of the grounded conductors having a width that is several times greater than the width of the other conductors, and first and second impedances equal to the surge impedances of the respective first and second pairs of conductors and connected across the other ends of the respective pairs of conductors.
Claim 2
Dependent Claim
192 words
Apparatus for the transmission of digital push-pull signals, comprising: a push-pull transmitter for emitting driving pulses; a bistable push-pull receiver responsive to coupling pulses to emit push-pull signals to be transmitted; and a push-pull directional coupler interposed between said transmitter and said receiver, said push-pull directional coupler responsive to said driving pulses to produce coupling pulses to set and reset said receiver causing emission of said push-pull signals, said directional coupler comprising at least six parallel conductors which include a first pair of conductors each connected at one end thereof to said transmitter, a second pair of conductors each connected at one end thereof to said receiver, the conductors of said first and second pairs symmetrical about a plane, and a pair of grounded conductors arranged outside of said first and second pairs of conductors and symmetrically about the same plane, each of the grounded conductors having a width that is several times greater than the width of the other conductors, and first and second impedances equal to the surge impedances of the respective first and second pairs of conductors and connected across the other ends of the respective pairs of conductors.
Claim 3
Dependent Claim
188 words
Apparatus for the transmission of digital push-pull signals, comprising: a push-pull transmitter for emitting driving pulses; a bistable push-pull receiver responsive to coupling pulses to emit push-pull signals to be transmitted; and a push-pull directional coupler interposed between said transmitter and said receiver, said push-pull directional coupler responsive to said driving pulses to produce coupling pulses to set and reset said receiver causing emission of said push-pull signals, said directional coupler comprising at least five parallel conductors, at least one of said conductors connected to ground; a first pair of said conductors connected at first ends thereof to said transmitter with the conductors of said first pair equal distances from said grounded conductor, a second pair of said conductors connected at first ends thereof to said receiver with the conductors of said second pair equal distances from the grounded conductor, and first and second impedances, said first impedance connected across the second ends of said first pair of conductors, said second impedance connected across the second ends of said second pair of conductors, each of said impedances corresponding to the respective surge impedances of the pairs of conductors.
Claim 4
Dependent Claim
188 words
Apparatus for the transmission of digital push-pull signals, comprising: a push-pull transmitter for emitting driving pulses; a bistable push-pull receiver responsive to coupling pulses to emit push-pull signals to be transmitted; and a push-pull directional coupler interposed between said transmitter and said receiver, said push-pull directional coupler responsive to said driving pulses to produce coupling pulses to set and reset said receiver causing emission of said push-pull signals, said directional coupler comprising at least five parallel conductors, at least one of said conductors connected to ground; a first pair of said conductors connected at first ends thereof to said transmitter with the conductors of said first pair equal distances from said grounded conductor, a second pair of said conductors connected at first ends thereof to said receiver with the conductors of said second pair equal distances from the grounded conductor, and first and second impedances, said first impedance connected across the second ends of said first pair of conductors, said second impedance connected across the second ends of said second pair of conductors, each of said impedances corresponding to the respective surge impedances of the pairs of conductors.
Claim 5
Dependent Claim
15 words
Apparatus according to claim 2, wherein all of said conductors lie in the same plane.
Claim 6
Dependent Claim
67 words
Apparatus according to claim 2, wherein said grounded conductor is a conductive layer having a width which is several times the width of the conductors of the pairs of conductors, and wherein the conductors of each pair are arranged symmetrically about the grounded conductor with one conductor of the first pair lying next to one conductor of the second pair on each side of the grounded conductor.
Claim 7
Dependent Claim
51 words
Appartus according to claim 2, wherein said coupler comprises an odd number of conductors arranged in the same plane, the central conductor being the grounded conductor and the pairs of conductors arranged symmetrically with respect to the grounded conductor with the conductors of the second pair arranged outermost in the plane.
Claim 8
Dependent Claim
40 words
Apparatus according to claim 5, comprising an additional pair of grounded conductors arranged outboard of the second pair of conductors and symmetrically with respect to the central grounded conductor to reduce the surge impedance of said second pair of conductors.
References Cited (Backward Citations)
US3516065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |