Pulse or digital communications – Multilevel
Patent
1993-07-09
1996-07-02
Tse, Young T.
Pulse or digital communications
Multilevel
375219, 375257, 326 60, 327331, 341 57, H04L 2549
Patent
active
055330541
ABSTRACT:
A data transmitter circuit includes a pseudoternary conversion circuit for converting a binary logic signal to a differential pseudoternary signal having symmetric rise and fall characteristics. The output of the pseudoternary conversion circuit is filtered and passed to an electrically conductive medium via an isolation transformer. The conversion circuit includes a symmetric arrangement of toggle circuits which respond to transitions in respective complementary binary signals constituting a differential binary input signal. Voltage dividers are connected to the output terminals of the toggle circuits for providing three levels of output voltages in response to the logical states of the toggle circuits.
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Conroy Keith M.
DeAndrea John J.
Technitrol, Inc.
Tse Young T.
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