Patent EP0641108A2 successfully refreshed from Google Patents.
EP0641108A2
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Telecommunications switching element
Assignee: Marconi UK Intellectual Property Ltd
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Filing: 1994-08-05
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Granted: —
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Expires: 2014-08-05
Abstract
Abstract A multi-stage telecommunications switching means, such as a "rotator", has 2 n input ports and 2 n output ports, 'n' being an integer greater than 1, and is formed from a number n x y (n-1) of y x y switching elements where 'y' is an integer greater than 1 and the elements are arranged in n stages wherein each switching element within a stage x, where 'x' is an integer between 1 and n, changes state every y (x-1) timeslots to provide switching only in the space domain. The switching elements may be electrical or optical devices.
Inventors
- 👤 Nigel John Burton
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 18:51
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L49/00; H04L49/10; H04L49/104; H04L49/105; H04L49/106; H04L49/15; H04L49/1553; H04Q; H04Q11/00; H04Q11/0001; H04Q11/0005; H04Q11/04; H04Q11/0428; H04Q11/0478; H04J; H04J2203/00; H04J2203/0001; H04J2203/0003; H04J2203/0012; H04L2012/5603; H04L2012/5604; H04L2012/5605; H04L2012/5638; H04L2012/5646; H04L2012/5649; H04L2012/5652; H04Q11/0062; H04Q11/0066; H04Q2011/0037; H04Q2011/0039; H04Q2011/0052
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
78 words
A multi-stage telecommunications switching means having 2 n input and 2 n output ports, where 'n' is an integer greater than 1, comprising a number n x y (n-1) of y x y switching elements, where 'y' is an integer greater than 1, arranged in n stages wherein each switching element within a stage x, where x is an integer between 1 and n, changes state every y (x-1) timeslots to provide switching only in the space domain.
Claim 2
Dependent Claim
59 words
A switching means as claimed in Claim 1, having 2 n inputs and 2 n outputs, wherein y is equal to 2, whereby there are n x 2 (n-1) switching elements arranged in 'n' stages and each switching element within a stage 'x', where x is an integer between 1 and n inclusive, changes state every 2 (x-1) timeslots.
Claim 3
Dependent Claim
46 words
A switching means as claimed in Claim 1 or 2 wherein each switching element has two states, a first state wherein each input port is connected to a corresponding output port and a second state wherein each input port is cross-connected to an opposite output port.
Claim 4
Dependent Claim
16 words
A switching means as claimed in any preceding claim wherein the switching elements are optical devices.
Claim 5
Dependent Claim
56 words
A processing means comprising first and second switching means as claimed in any preceding claim, wherein the second switching means performs a function inverse to that performed by the first switching means, further comprising a header processing unit connected between an output of the first switching means and the corresponding input of the second switching means.
Claim 6
Dependent Claim
29 words
A processing means as claimed in Claim 5, further comprising delay means between the remaining corresponding outputs of the first switching means and inputs of the second switching means.
References Cited (Backward Citations)
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