Data transmission system

Details Data transmission system Data transmission system

1980-03-03

1982-02-23

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

370 41, 340347DD, 371 56, 375 35, 375121, H04L 2749

Patent

active

043172075

ABSTRACT:
A data transmission system wherein a transmitter always transmits the carrier to a receiver and modulates the carrier by using the sending data and a receiver demodulates the sending data, wherein, in order to discriminate whether the data demodulated in the receiver is sending data or not during an existing sending data period, the transmitter converts specified bits of sending data and then transmits and the receiver discriminates the sending data existing period according to detection of such conversion being carried out.

REFERENCES:
patent: 1901642 (1933-03-01), Hansell
patent: 3457550 (1969-07-01), Gibson et al.
patent: 3611141 (1971-10-01), Waters
patent: 3898388 (1975-08-01), Goodwin et al.
patent: 4208650 (1980-06-01), Horn

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