H - Electricity – 04 – L
Patent
H - Electricity
04
L
325/1, 354/106,
H04L 25/49 (2006.01) H04B 10/155 (2006.01)
Patent
CA 1154841
ABSTRACT OF THE DISCLOSURE In a method and apparatus for transmitting digital signals by means of signal generators by initially converting a double current pulse train, under control of bit clock pulses and before transmission, into a first unipolar pulse train composed of pulses corresponding to all positive transmission pulses and into a second unipolar pulse train composed of pulses corresponding to all negative transmission pulses, the pulse trains are code converted independently of the duration of the bit clock pulses for producing a converted signal having a first transmitting amplitude in correspondence with each pulse of the first pulse train and a second transmitting amplitude in correspondence with each pulse of the second pulse train, the second amplitude differing from the first, and the converted signal is applied to a signal generator for producing an output signal corresponding to the converted signal and in which the transmitting amplitudes corresponding to both unipolar pulse trains vary the output signal in the same polarity direction.
363722
Fetherstonhaugh & Co.
Licentia Patent-Verwaltungs-Gmbh
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