Pulse or digital communications – Repeaters – Testing
Patent
1991-09-04
1993-11-30
Kuntz, Curtis
Pulse or digital communications
Repeaters
Testing
178 69N, H04L 2549
Patent
active
052672697
ABSTRACT:
A data communication system employing predetermined equalized waveforms for transmit equalization is disclosed. Serial NRZ data is received from a network controller and utilized to select from memory its equivalent as predistorted and filtered Manchester encoded data. Predetermined waveforms in memory are representative of the analog waveform produced when predistorted digital Manchester encoded data is passed through a high order transmit filter. Data from memory drives a digital to analog converter (DAC) to reconstruct the waveforms into analog form. A line driver having an integrated single pole low pass filter impresses the equalized waveform on to the transmission line.
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Aswell Cecil
Heideman Joseph E.
Ray Daniel L.
Shafir Haim
Shih Cheng-Chung
Bocure Tesfaldet
Kuntz Curtis
Level One Communications Inc.
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