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Systems and methods for operating a tag

專利號(hào)
US11176335B2
公開日期
2021-11-16
申請(qǐng)人
Sensormatic Electronics, LLC(US FL Boca Raton)
發(fā)明人
Steve E. Trivelpiece; Craig E. Trivelpiece; Eric F. Riggert
IPC分類
G06K7/10; G06K19/07; G06K7/00
技術(shù)領(lǐng)域
tag,rfid,tags,tag's,or,in,e.g,reader,motion,wot
地域: FL FL Boca Raton

摘要

Systems and methods for operating a Radio Frequency Identification (“RFID”) tag. The methods comprise: monitoring a level of Radio Frequency (“RF”) energy being received by the RFID tag; performing operations by a circuit of the RFID tag to compare the level of RF energy in a given frequency band to a first threshold value; and transitioning an operational mode of the RFID tag from a first operational mode in which a receiver is disabled to a second operational mode in which the receiver is enabled, when the level of RF energy exceeds the first threshold value. The RFID tag is able to communicate with a remote tag reader when the RFID tag is in the second operational mode and not when the RFID tag is in the first operational mode.

說明書

Upon completing 810 or 812, method 800 continues with 814 where an operational mode of the RFID tag is transitioned from the time slot determining mode to a power recharging mode. In the power recharging mode, a rechargeable power source (e.g., power source 236 of FIG. 2) is recharged using energy (e.g., RF energy) harvested by an energy harvesting circuit (e.g., energy harvesting circuit 232 of FIG. 2) of the RFID tag. As should be understood, processing elements (e.g., a communication enabled device 204 of FIG. 2) of the tag is in a low power state during the power recharging mode. In the low power state, the processing elements are at least partially functional (e.g., clock/timer 214 of FIG. 2 is operating). Notably, at least the RFID tag's communications circuit (e.g., communications circuit 206 of FIG. 2) is disabled in the power recharging mode. Other functions/operations of the RFID tag may also be disabled in this mode for power conservation purposes.

權(quán)利要求

1
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