Digital modem

Details Digital modem Digital modem

1989-05-30

1991-07-16

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375117, 379 97, H04L 2700

Patent

active

050330624

ABSTRACT:
A digital modem is connected to a CBX in a network. Data is transmitted to the digital modem in a data field of synchronous serial data frames. The digital modem converts the data into a digital signal corresponding to a time sampled analog signal representing the data. The converted digital signal is communicated to a digital to analog converter for transmission on a telephone line. Analog signals received on the telephone line are digitized, and then converted to data in the digital modem.

REFERENCES:
patent: 4718082 (1988-01-01), Parker et al.
patent: 4833706 (1989-05-01), Hughes-Hartog
patent: 4905273 (1990-02-01), Gordon et al.
patent: 4910763 (1990-03-01), Caron et al.
patent: 4914688 (1990-03-01), Kobayashi et al.

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