US3840855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic selector for line corrector for data transmission
Assignee: Alcatel CIT SA
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Filing: 1973-07-10
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Granted: 1974-10-08
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Expires: 1993-07-10
Abstract
Abstract An automatic selector for a data transmission line corrector selectively inserts a plurality of correctors in sequence in the line and measures the bipolarity errors associated with each corrector. The corrector which provides the least error is then connected to the line for purposes of that transmission.
Inventors
- 👤 F Hebert
- 👤 A Ameau
- 👤 M Boyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:34
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/24; H04L1/245; H04L1/247; H04L25/00; H04L25/02; H04L25/03; H04L25/03878
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
132 words
Automatic selector for a data transmission line corrector operating in accordance with a bipolar coding, for example an interlaced bipolar coding of order 2, which effects the selection, from n correctors, of that one which supplies a minimum number of bipolarity errors, comprising exploration switching means for successively connecting said n correctors to said data transmission line, and detector means for detecting bipolarity errors in the signal received at the output of each corrector, including means for the storage and comparison of the numbers of bipolarity errors detected at the output of each of said correctors at the n exploration positions, logic means for detecting the minimum number of bipolarity errors and means responsive to said logic means for fixedly setting in operation the corrector providing said minimum number of bipolarity errors.
Claim 2
Dependent Claim
132 words
Automatic selector for a data transmission line corrector operating in accordance with a bipolar coding, for example an interlaced bipolar coding of order 2, which effects the selection, from n correctors, of that one which supplies a minimum number of bipolarity errors, comprising exploration switching means for successively connecting said n correctors to said data transmission line, and detector means for detecting bipolarity errors in the signal received at the output of each corrector, including means for the storage and comparison of the numbers of bipolarity errors detected at the output of each of said correctors at the n exploration positions, logic means for detecting the minimum number of bipolarity errors and means responsive to said logic means for fixedly setting in operation the corrector providing said minimum number of bipolarity errors.
Claim 3
Dependent Claim
57 words
Automatic selector according to claim 1, characterized in that the pulses supplied by the bipolarity error detector means in each of the n positions are registered by analog means comprising essentially a capacitor which stores a charge proportional to the number of pulses received, the voltages thus obtained being applied to the input of said logic means.
Claim 4
Dependent Claim
31 words
Automatic selector according to claim 2, in which there is provided three correctors, and further including two comparator-amplifiers selectively connected to said capacitors to compare the voltages at the three capacitors.
Claim 5
Dependent Claim
31 words
Automatic selector according to claim 1, wherein said logic means includes a plurality of digital pulse counters of the backward and forward counting type for comparing the numbers of bipolarity errors.
Claim 6
Dependent Claim
24 words
Automatic selector according to claim 4, characterized in that there is provided three forward and backward counters connected to the output of respective correctors.
Claim 7
Dependent Claim
59 words
Automatic selector according to claim 1, including rearranging means connected to the outputs of said correctors to effect scrambling of the transmission and a means for effecting an inverse rearrangement of the output of said rearranging means to introduce a low noise level into the signal to be checked and extracted from the output of the said rearranging member.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |