In-building personal pager and identifier

H - Electricity – 04 – B

Patent

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Details

H04B 7/22 (2006.01) G06K 17/00 (2006.01) H04B 1/59 (2006.01) H04B 5/02 (2006.01) H04Q 7/08 (2006.01)

Patent

CA 2219075

In accordance with the present invention, a radio personal communications device is disclosed, which is capable to receiving modulated radio signals, and capable of transmitting modulated radio signals using modulated backscatter technology. This device can operate in an Interrogation Mode, in which a set of mandatory data is transmitted from the device; in a Location Mode, in which the approximate location of the device can be determined, and in a Messaging Mode, in which data can be transmitted to and received from the device. The device is capable of transmitting information, using modulated backscatter, at more than one data rate. The device contains a display to display some or all of the data transmitted to the device. Alternate embodiments of the invention allow the device to also support pushbuttons to allow data to be input to the device. Alternate embodiments support a variety of powering mechanisms for the device, including batteries, charge storage devices, solar cells, a coil or other energy transfer device, etc. A recharging station is also disclosed in the event the power supply of the device requires recharging.

La présente invention est un dispositif de radiocommunication personnel qui peut recevoir et émettre des signaux radio à modulation de signaux rétrodiffusés. Ce dispositif peut fonctionner dans un mode d'interrogation où il transmet un ensemble de données obligatoires, dans un mode de localisation où son emplacement approximatif peut être déterminé, et dans un mode de messagerie où il peut émettre et recevoir des données. En utilisant la modulation des signaux rétrodiffusés, il peut transmettre des données à plusieurs débits différents. Il comporte un afficheur qui lui permet d'afficher une partie des données qui lui sont transmises, ou toutes ces données. Dans d'autres concrétisations de l'invention, le dispositif peut être utilisé avec des boutons-poussoirs d'introduction de données. Il peut également être utilisé avec plusieurs dispositifs d'alimentation : piles ordinaires, piles rechargeables, cellules solaires, bobines ou autres dispositifs de transfert d'énergie, etc. Un chargeur pour le bloc d'alimentation est également divulgué.

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