PCM modems using communication lines with multiple...

Details PCM modems using communication lines with multiple... PCM modems using communication lines with multiple...

2005-01-11

2005-01-11

Yao, Kwang Bin (Department: 2667)

Multiplex communications

Channel assignment techniques

Details of circuit or interface for connecting user to the...

Reexamination Certificate

active

06842458

ABSTRACT:
The present invention discloses communications devices which improves communications of pulse code modulation modems which use communications lines with multiple digital-to-analog conversions. One embodiment of the present invention includes a plurality of codecs (312) which receive analog signals through multiple communications channels (310). Digital data streams generated by the codecs (312) from the analog signals is transmitted to an associated one of a plurality of digital signal processors (214). The digital signal processors (214) process the decoded data and then transfers the data to a digital modem (216) for further transmission.

REFERENCES:
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patent: 5663982 (1997-09-01), Hodge et al.
patent: 6069879 (2000-05-01), Chatter
patent: 6304596 (2001-10-01), Yamano et al.
patent: 6498806 (2002-12-01), Davis
patent: 6522688 (2003-02-01), Dowling
patent: 6560197 (2003-05-01), LeVieux et al.

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