Method and apparatus for providing reliable voice and...

Details Method and apparatus for providing reliable voice and... Method and apparatus for providing reliable voice and...

2006-01-24

2006-01-24

Nguyen, Steven H D (Department: 2665)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S516000, C375S326000, C375S371000, C375S376000

Reexamination Certificate

active

06990109

ABSTRACT:
Adaptive clock recovery for the receiving entity of a communication system transporting constant bit-rate (CBR) services over an asynchronous transfer mode (ATM) or ATM-like network is performed by a digital phase locked loop (DPLL). The recovered clock is based on the DPLL's phase detector's count of high frequency service clock cycles between transitions in an input signal representative of instances of receipt of ATM cells subject to cell delay variations through the network, and a reference clock signal whose frequency is a prescribed fraction of that of the output clock. The DPLL's VCO function is an increment/decrement of the service clock frequency, which avoids constraining the operation of a high performance modem (such as a V.90 modem).

REFERENCES:
patent: 4706263 (1987-11-01), von der Embse
patent: 5361261 (1994-11-01), Edem et al.
patent: 5450447 (1995-09-01), Dutta
patent: 5784379 (1998-07-01), Tan
patent: 5844891 (1998-12-01), Cox
patent: 5966387 (1999-10-01), Cloutier
patent: 6111878 (2000-08-01), Powell
patent: 6188692 (2001-02-01), Huscroft et al.
patent: 6252850 (2001-06-01), Lauret
patent: 6819727 (2004-11-01), Cucchi et al.
patent: 6876674 (2005-04-01), Ruutu et al.

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