Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
Patent
1991-09-13
1994-08-30
Kuntz, Curtis
Telephonic communications
Telephone line or system combined with diverse electrical...
Having transmission of a digital message signal over a...
379 98, 375 8, H04M 1100
Patent
active
053435150
ABSTRACT:
A modem having at least two modem protocols, a slow full duplex protocol and a fast half duplex protocol, for use of either depending on a received rate of data. A modem for switching between a plurality of protocols for data transmission and reception. The modem capable of switching between a fast and a slow protocol depending on the received rate of data. The received rate of data determined by measuring received amounts of data during predetermined time intervals. Alternatively, the received data rate determined by measuring an amount of data stored in a memory. The modem capable of full duplex interactive operation and 9600 BPS data transfers in a seamless manner. The modem operable with streaming error correction protocols. Also, described is a method for communication of data between at least two modems each capable of operating at a plurality of data rates. Also, described is a system for communication of binary data comprising a binary data source and a modem.
REFERENCES:
patent: 4236248 (1980-11-01), Teramura et al.
patent: 4680781 (1987-07-01), Amundson et al.
patent: 4771417 (1988-09-01), Maxwell et al.
patent: 4890316 (1989-12-01), Walsh et al.
patent: 5008901 (1991-04-01), Wallach et al.
patent: 5072407 (1991-12-01), Gutz et al.
patent: 5267263 (1993-11-01), Feezel et al.
Kuntz Curtis
Woo Stella L.
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