Microprocessor data modem

Details Microprocessor data modem Microprocessor data modem

1979-05-11

1981-04-21

Robinson, Thomas A.

Pulse or digital communications

Repeaters

Testing

364900, 375 67, 375 84, H04J 312, H04L 2706

Patent

active

042636701

ABSTRACT:
A data modem is provided which is operative at a data rate of 4800 bps and employing 8 phase DPSK modulation. The modem includes a microprocessor and associated memories for digital signal processing and control of substantially all transmitter and receiver operations.

REFERENCES:
patent: 3747024 (1973-07-01), Choquet et al.
patent: 3818347 (1974-06-01), Holsinger
patent: 3878468 (1975-04-01), Falconer et al.
patent: 3988540 (1976-10-01), Scott et al.
patent: 4027250 (1977-05-01), Lang
patent: 4035735 (1977-07-01), Akashi et al.
patent: 4085449 (1978-04-01), Walsh et al.
patent: 4097807 (1978-06-01), Fujimura
"Microprocessor Implementation of High-Speed Data Modems", Van Gerwen et al., IEEE Transactions on Communications, vol. Com-25, No. 2, Feb. 1977.
Bell System Technology Reference--"Data Sets 201A and 201B".

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