Multi-speed, full duplex modem

Details Multi-speed, full duplex modem Multi-speed, full duplex modem

1986-04-21

1987-09-01

Rubinson, Gene Z.

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

375 46, 364900, H04M 1106, G06F 300

Patent

active

046913424

ABSTRACT:
A multi-speed, full duplex modem is disclosed for transmitting and receiving analog signals over a telephone network in communication with a remote modem. The analog signals are converted to digital data for processing by a signal processor and a microcomputer. A bi-directional bus is disposed between the signal processor and the microcomputer for selectively transferring multiple bits of data in either a transmit or receive direction. One or more of the multiple bits of data are restricted to convey bus direction data in one of the transmit and receive directions, and not restricted in the other direction. The full duplex modem allows simultaneous transmission and reception of analog signals over the telephone network, at one of the multispeed data rates selected for compatability between the full duplex, multispeed modem and the remote modem.

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