Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
Patent
1983-08-30
1987-04-21
Dwyer, James L.
Telephonic communications
Telephone line or system combined with diverse electrical...
Having transmission of a digital message signal over a...
379100, 379420, H04M 1106
Patent
active
046598766
ABSTRACT:
An interactive graphics and audio communications system is disclosed. The system enables users to communicate audibly and graphically over a single telephone connection.
REFERENCES:
patent: 4431870 (1984-02-01), May et al.
patent: 4476559 (1984-10-01), Brolin et al.
patent: 4485400 (1984-11-01), Lemelson et al.
patent: 4533791 (1985-08-01), Read et al.
Conference: Electronic Text Communication, Munich Germany, Jun. 12-15, 1978, pp. 291-304, Bordewijk, "Teleboard, Scribophone and their Relation to Coded Text Transmission".
NTG-Fachber (Germany), vol. 73, 1980, pp. 167-171, Katagiri et al. "A Digital Video Telephone Subscriber Set with 64 KBIT/s Transmission Rate".
Matthews Thomas P.
Pleva Robert M.
Sullivan Thomas M.
Dwyer James L.
SPI Soft Pac International
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