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Patent US4412335A successfully refreshed from Google Patents.
US4412335A
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Digital signal distribution system
Assignee: International Business Machines Corp
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Filing: 1981-09-25
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Granted: 1983-10-25
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Expires: 2001-09-25
Abstract
Abstract A digital signal distribution system for distributing digital signals to remote points of a machine. It is comprised of a distribution device arranged at each of said points. In each device, a receiver receives on its true and complementary inputs, the signal to be distributed. The drivers are connected to the receivers through a crossed connection, the true output of the receiver being connected to the complementary input of the driver, and the complementary output of the receiver being connected to the true input of the driver, so as to cancel the skew of the pulse width of the signal to be distributed. The signals on outputs of the driver circuits can be utilized locally or transmitted to another remote point.
Inventors
- 👤 Jean-Claude Froment
- 👤 Jean-Louis Marijon
- 👤 Gerard Orengo
- 👤 Michel Verhaeghe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:47
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/125; H03K5/1252; H04; H04L; H04L25/00; H04L25/02; H04L25/20; H04L7/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
101 words
A digital signal distribution system for distributing digital signals to points of a signal transmission chain, characterized in that it includes, at each of said points: a distribution device being comprised of a receiver and at least one driver, said receiver and driver which are matched and have a true input and a complementary input respectively in phase with a true output and a complementary output, are connected such that the true output of the receiver is connected to the complementary input of the driver and the complementary output of the receiver is connected to the true input of the driver.
Claim 2
Dependent Claim
101 words
A digital signal distribution system for distributing digital signals to points of a signal transmission chain, characterized in that it includes, at each of said points: a distribution device being comprised of a receiver and at least one driver, said receiver and driver which are matched and have a true input and a complementary input respectively in phase with a true output and a complementary output, are connected such that the true output of the receiver is connected to the complementary input of the driver and the complementary output of the receiver is connected to the true input of the driver.
Claim 3
Dependent Claim
96 words
A distribution system according to claim 1, characterized in that the receiver is connected to receive the digital signals to be distributed, on its true and complementary inputs, and the driver is connected thereto to supply, on the true and complementary outputs thereof, the signals to that portion of said signal transmission chain which is arranged at this point, said driver also being connected to another receiver of another distribution device arranged at another point, the true and complementary outputs of said driver being connected, respectively, to the true and complementary inputs of said another receiver.
Claim 4
Dependent Claim
60 words
A distribution system according to claim 1, characterized in that each distribution device includes several drivers, one of said drivers supplying on the true and complementary outputs thereof, the digital signals to the receiver of a device arranged at a remote point, and the other drivers supplying on the true and complementary outputs thereof, the signals for a local use.
Claim 5
Dependent Claim
22 words
A system according to claim 1, characterized in that the receiver and the drivers are logic circuits of the emitter-coupled transistors type.
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) | 1986-10-24 | 1987-04-25 | 1987-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-24 | 1991-04-25 | 1991-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-24 | 1995-04-25 | 1995-10-25 | $7700.00 | Window Closed / Lapsed |