EP0519712A2
Expired / Lapsed
EP
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Bus-type communication network
Assignee: Canon Inc
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Filing: 1992-06-17
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Granted: —
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Expires: 2012-06-17
Abstract
Abstract A bus-type communication network is shown, in which communications among a plurality of terminal equipments are performed via a bus. The network comprises a detector for detecting that the bus has been broken and a connector for connecting the ends of the bus in accordance with the detection result of the detection.
Inventors
- 👤 Masao C/O Canon Kabushiki Kaisha Majima
- 👤 Kenji c/o Canon Kabushiki Kaisha Nakamura
- 👤 Noboru c/o Canon Kabushiki Kaisha Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:38
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/07; H04B10/27; H04B10/278
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
48 words
A bus-type communication network in which communications among a plurality of terminal equipments are performed via a bus, comprising: detection means for detecting that the bus is broken; and connection means for connecting the ends of the bus in accordance with the detection result of said detection means.
Claim 2
Dependent Claim
17 words
A bus-type communication network according to claim 1, wherein an optical signal is transmitted through the bus.
Claim 3
Dependent Claim
24 words
A bus-type communication network according to claim 2, wherein said connection means comprises an optical switch for cutting off or passing the optical signal.
Claim 4
Dependent Claim
24 words
A bus-typed communication network according to claim 2, wherein said connection means comprises an optical amplifier for cutting off or amplifying the optical signal.
Claim 5
Dependent Claim
40 words
A bus-type communication network according to claim 2, wherein said connection means comprises an O/E conversion device for converting the optical signal into an electrical signal and an E/O conversion device for converting the electrical signal into an optical signal.
Claim 6
Dependent Claim
26 words
A bus-type communication network according to claim 1, wherein said detection means performs a detection operation by comparing data appearing at the ends of the bus.
Claim 7
Dependent Claim
68 words
A terminal node which is provided in a bus-type communication network in which communication among a plurality of terminal equipments are performed via a bus, comprising: first input means for inputting signals from a first end of the bus; second input means for inputting signals from a second end of the bus; and connection means for connecting said first and second input means when the bus is broken.
Claim 8
Dependent Claim
16 words
A terminal node according to claim 7, wherein an optical signal is transmitted through the bus.
Claim 9
Dependent Claim
23 words
A terminal node according to claim 8, wherein said connection means comprises an optical switch for cutting off or bypassing the optical signal.
Claim 10
Dependent Claim
23 words
A terminal node according to claim 8, wherein said connection means comprises an optical amplifier for cutting off an amplifying the optical signal.
Claim 11
Dependent Claim
39 words
A terminal node according to claim 8, wherein said connection means comprises an O/E conversion device for converting the optical signal into an electrical signal and an E/O conversion device for converting the electric signal into an optical signal.
Claim 12
Dependent Claim
18 words
A terminal node according to claim 7, further comprising detection means for detecting that the bus is broken.
References Cited (Backward Citations)
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