Pulse or digital communications – Transceivers – Modems
Reexamination Certificate
2006-03-28
2006-03-28
Chin, Stephen (Department: 2634)
Pulse or digital communications
Transceivers
Modems
C375S242000, C375S245000, C375S246000
Reexamination Certificate
active
07020189
ABSTRACT:
Method and system for implementing digital filters in the data path of a Pulse Code Modulated (PCM) modem to allow efficient transition of a second analog to digital conversion process in a communication system including monitoring the upstream data path of the communication system to decode the V.34 portion of the data transmission which occurs during the handshake phase of the modem call, where the information contained in the upstream data channel during the handshake phase allows the communication system to determine the manner in which the PCM modem is training and transmitting data to the client modem.
REFERENCES:
patent: 5528625 (1996-06-01), Ayanoglu et al.
patent: 5790594 (1998-08-01), Peng
patent: 6052412 (2000-04-01), Ruether et al.
patent: 6151364 (2000-11-01), Ruether et al.
patent: 6341360 (2002-01-01), Abdelilah et al.
patent: 6516025 (2003-02-01), Warke et al.
Hon James
Schutz Kerry
Sweitzer Steven R.
Chin Stephen
GoDigital Networks Corporation
Sierra Patent Group Ltd.
Wang Ted M.
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