Alternate pulse inversion encoding scheme for serial data transmission
US4897854A · kind A · utility
25Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1989 |
| Grant date | Jan 30, 1990 |
| Priority date | — |
| Expiry date | Feb 24, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/4902
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is provided for encoding and decoding data to be transmitted over a communication network via transformer coupling. The data is pulse width modulated, and split into separate first and second data streams containing alternate pulses. The first data stream is inverted, and recombined with the second data stream to produce a pulse width modulated bi-polar data signal having an alternating pulse sequence. The data is decoded at the receiver by inverting the pulses of one polarity, and combining them with the pulses of the other polarity to form a pulse width modulated data stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.