Method and apparatus for transmitting and receiving a symbol over pots wiring using a multi-cycle waveform
US6678321B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1998 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Sep 15, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K7/08
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method of transmitting information over POTS wiring includes transmitting a first delimiter signal, in the form of a multi-cycle waveform having a frequency of approximately 7.5 MHz, over the POTS wiring. A second delimiter signal, also comprising a multi-cycle waveform, is then later propagated over the POTS wiring. The time duration between the respective propagations of the first and second delimiter signals defines a symbol, which encodes information. The time duration is also such that reflections on the carrier medium resulting from the propagation of the first delimiter signal decay to a predetermined level prior to propagation of the second delimiter signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.