Digital modem

Details Digital modem Digital modem

1976-11-26

1978-04-18

Shaw, Gareth D.

Boots, shoes, and leggings

364200, 179 16F, H04J 312, H04M 176

Patent

active

040854493

ABSTRACT:
A digital modem comprising a discrete analog/digital converter and digital processor for high-speed digital data transmission by means of analog signals over analog transmission facilities. The analog/digital converter comprises a transmitter section including a digital-to-analog converter and an analog matching interface, and a receiver section including an analog matching interface and analog-to-digital converter. The digital processor comprises a signal processor set, a processor control set and a multiplier/memory set capable of digital manipulation and computation of digitized data signals to accomplish the required encoding, filtering, modulation, demodulation, equalization, decoding and control function.

REFERENCES:
patent: 3676858 (1972-07-01), Finch et al.
patent: 3714635 (1973-01-01), Hamilton et al.
patent: 3754217 (1973-08-01), Bell et al.
patent: 3806658 (1974-04-01), Anderson et al.
patent: 3902165 (1975-08-01), Artom
patent: 4009356 (1977-02-01), Borysiewicz et al.
patent: 4020472 (1977-04-01), Bennett et al.

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