Data communication system

Details Data communication system Data communication system

1977-08-03

1979-10-09

Safourek, Benedict V.

Telegraphy

Systems

Chemical

325 38A, H04L 2549, H04L 300

Patent

active

041707150

ABSTRACT:
At the transmitting side of a data communication system, data to be transferred is converted to digital pulse-coded transmission data including a combination of two pulse signals whose pulse durations are different from each other. The pulse duration of the digital pulse-coded transmission data is detected to change the amplitude level of the digital pulse-coded transmission data so that the frequency-attenuation characteristic of signals in a transmission path may be compensated in accordance with the detected pulse duration. This modulated transmission data is sent through the transmisson path and is demodulated at the receiving end of the transmission path.

REFERENCES:
patent: 3806807 (1974-04-01), Nakamura
patent: 3980825 (1976-09-01), Morrien
patent: 3980826 (1976-09-01), Widmer
patent: 3993953 (1976-11-01), Lender et al.
patent: 4041239 (1977-08-01), Haass

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