Patent EP0664657A2 successfully refreshed from Google Patents.
EP0664657A2
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EP
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A delay-less signal processing arrangement for use in an atm network
Assignee: AT&T Inc
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Filing: 1994-12-01
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Granted: —
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Expires: 2014-12-01
Abstract
Abstract An ATM cell (e.g. on 302-2) carrying a voice-band signal originating in an STM network (200 fed by S2) is processed in accordance with a particular signal processing function, e.g. echo cancellation, in an ATM mode (305) at an ATM data rate without incurring a delay penalty that arises.
Inventors
- 👤 Behram H. Bharucha
- 👤 Charles William Kevin Gritton
- 👤 Dario Livio Parola
- 👤 Richard Zoccolillo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 00:16
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0478; H04J; H04J2203/00; H04J2203/0001; H04J2203/0073; H04J2203/0076; H04L; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L2012/5638; H04L2012/5646; H04L2012/5649
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
135 words
A method of processing a cell in an ATM network node, said node receiving a first cell via a first direction of a connection and receiving a second cell via a second direction of said connection, said second cell being noncoincidental in time with said first cell, said method CHARACTERIZED IN THAT responding to receipt of said first cell, by storing a copy of said first cell in a buffer and forwarding said first cell to its intended destination, and responding to receipt of said second cell, by (a) processing the contents of said first and second cells in accord with a predetermined signal processing function, (b) forming the result of said signal processing function into a third cell and (c) forwarding said third cell over said second direction in place of said second cell.
Claim 2
Dependent Claim
32 words
The method of claim 1 FURTHER CHARACTERIZED IN THAT said signal processing function operates at a clock rate different than the clock rate at which said first and second cells are received.
Claim 3
Dependent Claim
34 words
The method of claim 1 FURTHER CHARACTERIZED IN THAT said signal processing function operates sufficiently fast to minimize a delay between the receipt of said second cell and the forwarding of said third cell.
Claim 4
Dependent Claim
19 words
The method of claim 1 FURTHER CHARACTERIZED IN THAT said first and second cells originate in respective STM networks.
Claim 5
Dependent Claim
18 words
The method of claim 1 FURTHER CHARACTERIZED IN THAT said signal processing function is an echo cancellation function.
References Cited (Backward Citations)
No citation records indexed.
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