A wireless transceiver includes: (a) a low power radio frequency (LPRF) communications component capable of powering down to conserve energy and capable of powering up in response to an electronic signal, the LPRF communications component including a transmitter and a first receiver; and (b) a second...http://www.google.fr/patents/US20090215407?utm_source=gb-gplus-shareBrevet US20090215407 - LPRF DEVICE WAKE UP USING WIRELESS TAG
Numéro de demande: 12/436,739 Numéro de publication: US 2009/0215407 A1 Date de dépôt: 6 mai 2009 Brevet délivré: US7941095 ( Date de délivrance 10 mai 2011)
