Method and apparatus for full duplex sideband communication
US6463039B1 · kind B1 · utility
136Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1998 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Apr 24, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/38
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention is an apparatus and method for using electromagnetic energy as the means of automatic data collection (ADC). The communication system that comprises the invention utilizes frequency modulated (“FM”) sideband electromagnetic energy to enable full duplex communication with another communication device. In one embodiment one of the communication devices is passive and the carrier is used to power the passive device. In another embodiment the communication devices are active and the carrier is suppressed to increase range or decrease power constraints, as the application requires.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.