US3735056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for transmitting digital signals
Assignee: KM Kabelmetal AG
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Filing: 1972-03-06
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Granted: 1973-05-22
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Expires: 1992-03-06
Abstract
Abstract In a communication system for the transmission of digital signals and including plural stranded conductors, respective two conductors defining a single transmission path, the system further including signal regenerating stations, for regenerating the individual signals for improving the signal to noise ratio of the transmission system as a whole, the digital signals as transmitted including clocking signals, transmitted in one of the paths; means are included in the system for equalizing propagation phase differences in the signals of the transmission paths of the plurality as resulting from differences in length of twist of the several conductors as stranded, to be in phase synchronism at a regenerating station.
Inventors
- 👤 H Martin
- 👤 L Krisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:17
CPC Classifications
H; H01; H01B; H01B11/00; H04; H04J; H04J3/00; H04J3/02; H04J3/06; H04J3/0602; H04J3/062; H04L; H04L7/00; H04L7/0016; H04L7/0033
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
97 words
In a communication system for the transmission of digital signals and including plural stranded conductoR pairs, each pair defining a single transmission path, the system further including signal regenerating stations, for regenerating the individual signals for improving the signal to noise ratio of the transmission system as a whole, the digital signals as transmitted including bit clocking signals, the improvement comprising: means included in the system for equalizing propagation phase differences in the signals of the transmission paths of the plurality as resulting from differences in length of twists of the several conductor pairs of the plurality.
Claim 2
Dependent Claim
97 words
In a communication system for the transmission of digital signals and including plural stranded conductoR pairs, each pair defining a single transmission path, the system further including signal regenerating stations, for regenerating the individual signals for improving the signal to noise ratio of the transmission system as a whole, the digital signals as transmitted including bit clocking signals, the improvement comprising: means included in the system for equalizing propagation phase differences in the signals of the transmission paths of the plurality as resulting from differences in length of twists of the several conductor pairs of the plurality.
Claim 3
Dependent Claim
56 words
In a system as in claim 1, wherein the means for equalizing are including in the station and include bit signal transfer means and transfer clock means, providing clock pulses at a rate above the bit clock rate, for controlling the bit signal transfer means individually for each transmission path, to offset the propagation phase differences.
Claim 4
Dependent Claim
51 words
In a system as in claim 2, the regenerating station including a first register, the clocking means connected for individual input clocking the bits into the first registers at a relative phase offsetting said relative propagation phase differences; and a second register receiving the content of the first register in parallel.
Claim 5
Dependent Claim
87 words
In a system as in claim 2, the regenerating station including a first register connected for receiving the signals from the several conductor pairs in parallel, a second register connected for receiving the bits held in the first register, the transfer clocking means providing for individual clocking of the transfer of bits from the first to the second register at a relative phase determined in accordance with said propagation phase differences, for the second register to receive the bits under phase differences compensating said propagation phase differences.
Claim 6
Dependent Claim
46 words
In a system as in claim 1, wherein each conductor is insulated, the insulation of at least some conductors including carbonyl-iron powder, the relative content determined to obtain a particular delay of signals passing through the respective conductor, the delays determined for obtaining said phase equalization.
References Cited (Backward Citations)
US3118111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |