Wireless communication system including a unique data transmission device
US6721546B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2001 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Dec 5, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08C17/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A microprocessor, powered by a low cost battery, controls a wireless transmitter of a communication system. A sensor senses the value of at least one condition at a predetermined location. The transmitter transmits to a wireless receiver a data packet, which includes the value of the at least one condition, at randomly selected transmission time intervals. Closing of a multiple function push button switch activates an inactive microprocessor to cause its controlled transmitter to transmit irrespective of the selected transmission time interval until the next transmission if the switch is opened before a predetermined period of time elapses or to cause inactivation of the activated microprocessor for the longest available inactive period of time if the switch is held closed for the predetermined period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.