US5459724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
ATM switching arrangement
Assignee: Ericsson AB
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Filing: 1992-08-03
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Granted: 1995-10-17
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Expires: 2012-08-03
Abstract
Abstract PCT No. PCT/GB92/01441 Sec. 371 Date May 20, 1993 Sec. 102(e) Date May 20, 1993 PCT Filed Aug. 3, 1992 PCT Pub. No. WO93/03567 PCT Pub. Date Feb. 18, 1993.An ATM telecommunications switch includes a plurality of parallel data switching planes and a parallel control plane, each plane having an equal number of input ports and output ports and a central switching unit to switch each input port to any output port. Data from a single timeslot on the central switching unit is connected to a plurality of output ports in a point to multipoint operation. A multipoint memory stores information regarding the data addresses and a forward transfer store provides additional storage for multipoint cells.
Inventors
- 👤 Mark T. Jeffrey
- 👤 Thomas S. Maddern
- 👤 Richard J. Proctor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:23
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L12/02; H04L12/16; H04L12/18; H04L12/1836; H04L49/00; H04L49/10; H04L49/104; H04L49/105; H04L49/106; H04L49/15; H04L49/1515; H04L49/153; H04L49/1553; H04L49/1576; H04L49/20; H04L49/201; H04L49/203; H04L49/25; H04L49/253; H04L49/255; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0478; H04L2012/5638; H04L2012/5646; H04L2012/5647; H04L2012/565; H04L2012/5651; H04L2012/5678; H04L2012/5681; H04L2012/5684
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
112 words
An ATM telecommunications switch, comprising: a plurality of parallel data switching planes and a parallel control plane, the switch having an equal number of input ports and output ports, and a central switching unit to switch each input port to any output port; connection means for connecting data from a single timeslot on the central switching unit to a plurality of output ports in a point to multipoint operation, said central switching unit including a forward transfer store to provide additional storage for multipoint cells, said forward transfer store having a top rank section restricted to use for broadcast connections; and control means for treating a multipoint cell as a broadcast cell.
Claim 2
Dependent Claim
112 words
An ATM telecommunications switch, comprising: a plurality of parallel data switching planes and a parallel control plane, the switch having an equal number of input ports and output ports, and a central switching unit to switch each input port to any output port; connection means for connecting data from a single timeslot on the central switching unit to a plurality of output ports in a point to multipoint operation, said central switching unit including a forward transfer store to provide additional storage for multipoint cells, said forward transfer store having a top rank section restricted to use for broadcast connections; and control means for treating a multipoint cell as a broadcast cell.
Claim 3
Dependent Claim
30 words
The ATM telecommunications switch as claimed in claim 1; and further comprising a multipoint memory means for storing information regarding addresses to which the data from the timeslot is sent.
Claim 4
Dependent Claim
29 words
The ATM telecommunications switch as claimed in claim 1; and further comprising retiming means for retiming multicast cells out of sequence due to delays in the central switching unit.
Claim 5
Dependent Claim
26 words
The ATM telecommunications switch as claimed in claim 1, wherein the control means includes means for treating a point to few points connection as multipoint cells.
References Cited (Backward Citations)
EP0224244A2
Cited
GB2224417A
Cited
GB2238934A
Cited
US5228031A
Cited
US5202885A
Cited
US5222063A
Cited
GB2244408A
Cited
GB2250159A
Cited
US5253251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-10-16 | 1999-04-17 | 1999-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-10-16 | 2003-04-17 | 2003-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-10-16 | 2007-04-17 | 2007-10-17 | $7700.00 | Window Closed / Lapsed |