Wireless communication apparatus
US7761212B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 24, 2008 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Oct 14, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wireless communication apparatus including a master unit and a slave unit. The master unit includes a transmitter configured to transmit a beacon periodically and a receiver. A detector is provided that is configured to output a detected signal, and the slave unit is configured to receive the detected signal from the detector. The slave unit includes a receiver configured to receive the beacon periodically at a receiving timing determined based on the beacon, and a transmitter configured to transmit the detected signal to the master unit receiver at a transmitting timing determined based on the beacon if a value of the detected signal changes by a threshold amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.