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CA1190675A Expired / Lapsed CA ⏱️ 0.0 years remaining

Wide-band communications system

Assignee: Siemens AG
•
Filing: 1982-07-27
•
Granted: 1985-07-16
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Expires: 2002-07-27
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Abstract

Abstract A B S T R A C T In an optical wide-band network with subscriber-lines, each comprising two optical wave-guides running between an exchange and the subscriber-station, only TV and/or stereo-sound wide-band signals are transmitted, through one optical wave-guide, from the exchange to the subscriber-station, whereas through the other optical wave-guide, in both directions, are transmitted all digital communications narrow-band signals - for 64 kbit/s digital telephony, facsimile, 8 kbit/s signalling, synchronizing, data-transmission-, also pos-sibly bi-directional video-telephony digital signals, between the exchange and the subscriber station. The digital communications signals in the two trans-mission directions are each transmitted in time-division multiplex in the separate-time-position process; the wide-band signals are transmitted on analog-modulated carriers.

Inventors

  • 👤 Herbert Strehl

Bibliographic Details

Application Number —
Jurisdiction CA
Data Source google_patents
Last Synchronized 2026-11-04 21:23
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0478; H04J; H04J2203/00; H04J2203/0001; H04J2203/0028; H04J2203/003; H04J2203/0039; H04J2203/0089

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 136 words
A wide-band communications system with subscriber's lines, each comprising two optical wave-guides running between the exchange and the subscriber's station, for TV and/or stereo sound wide-band signals and, on the other hand, narrow-band digital communications signals in which only the TV and/or stereo sound wide band signals are transmitted over the one optical wave-guide from the exchange or distribution station to the subscriber's station and all digital communications narrow-band signals, in particular 64 kbit/s digital signals, are transmitted in multiplex over the other optical wave-guide between the exchange and the subscriber's station and vice-versa as well as program selection signals from the subscriber's station to the exchange or distribution station, characterized in that bidirectional video communica-tions digital signals are also transmitted over the said other optical wave-guide between the exchange and the subscriber's station and vice-versa.
Claim 2
Dependent Claim 136 words
A wide-band communications system with subscriber's lines, each comprising two optical wave-guides running between the exchange and the subscriber's station, for TV and/or stereo sound wide-band signals and, on the other hand, narrow-band digital communications signals in which only the TV and/or stereo sound wide band signals are transmitted over the one optical wave-guide from the exchange or distribution station to the subscriber's station and all digital communications narrow-band signals, in particular 64 kbit/s digital signals, are transmitted in multiplex over the other optical wave-guide between the exchange and the subscriber's station and vice-versa as well as program selection signals from the subscriber's station to the exchange or distribution station, characterized in that bidirectional video communica-tions digital signals are also transmitted over the said other optical wave-guide between the exchange and the subscriber's station and vice-versa.
Claim 3
Dependent Claim 32 words
A wide-band communications system according to claim 1, characterized in that the digital communications signals in the two transmission directions are transmitted over the said other optical wave-guide in the separate-time-position process.
Claim 4
Dependent Claim 30 words
A wide-band communications system according to claim 2, characterized in that the digital communications signals in one transmission direction are transmitted in time-division multiplex over the said other optical wave-guide.
Claim 5
Dependent Claim 28 words
A wide-band communications system according to claim 1, 2 or 3, char-acterized in that the wide-hand signals are transmitted over the said one opti-cal wave-guide on analog-modulated carriers.

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