Multi-level data transmitter
US5533054A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1993 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Jul 9, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/4925
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.