EP0141234A2
Expired / Lapsed
EP
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Switching network
Assignee: International Business Machines Corp
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Filing: 1984-09-21
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Granted: —
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Expires: 2004-09-21
Abstract
Abstract A cross-point switch comprising an array of cross-point matrices (20) in which the internal lines (22-32) are connected to external lines (45-54) by tri-state buffers (36-44). The external lines can connect different switching matrices. Redundant matrices may be included to provide fault tolerance.
Inventors
- 👤 Christos John Georgiou
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 00:26
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/52; H04Q3/521
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
47 words
A switching network, characterized by: a plurality of cross-point switching matrices (60, 62, 64, 65), comprising a plurality of internal lines (22-32) and switch points (34, 36) between said internal lines, and an array of external lines (45-54), each external line being associated with an internal line:
Claim 2
Dependent Claim
47 words
A switching network, characterized by: a plurality of cross-point switching matrices (60, 62, 64, 65), comprising a plurality of internal lines (22-32) and switch points (34, 36) between said internal lines, and an array of external lines (45-54), each external line being associated with an internal line:
Claim 3
Dependent Claim
25 words
A switching network, as recited in Claim 1, further comprising means (36-44) for selectively interconnecting each of said internal lines to its associated external line.
Claim 4
Dependent Claim
18 words
A switching network, as recited in Claim 2, wherein said selective interconnecting means are selectively activated bi-directional gates.
Claim 5
Dependent Claim
61 words
A switching network, as recited in Claim 1 or 2, wherein said external lines comprise input-output lines (45-50) and interconnect lines (52, 54), and said cross-point matrices are bi-directional two-sided cross-point matrices and said input-output lines are associated with one side of said matrices and said interconnect lines are associated with another side of said matrices perpendicular to said first side.
Claim 6
Dependent Claim
36 words
A switching network, as recited in Claims 1 and 2 further comprising a controller (70) and a control bus (56) connected between said controller and said matrices for controlling said switch points and said interconnecting means.
Claim 7
Dependent Claim
22 words
A switching network, as recited in Claim 4, wherein said plurality of switching matrices comprises redundant matrices associated with said input-output lines.
Claim 8
Dependent Claim
24 words
.A switching network, as recited in Claim 4 wherein said interconnect lines (52, 54) and said internal lines (22-32) are located in different planes.
Claim 9
Dependent Claim
23 words
A switching network, as recited in Claim 5 wherein any switching matrice may be selectively disconnected and connected respectively by its interconnecting means.
References Cited (Backward Citations)
No citation records indexed.
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