US. PATENT DOCUMENTS processor; a backscatter modulator coupled to the processor;
and an active transmitter coupled to the processor, the active 5,097,253 A 3/1992 …

(57) ABSTRACT A radio device such as a wireless tag reader communicates with multiple
types of wireless identi? cation tags in a monitored region. The radio device includes a …

Systems and methods for activating devices such as RFID tags includes activating a device
if an activate command matches a value stored on the device. The activate command can …

Embodiments of the present invention enable energy transfer via short-range RF
communication between a main device and an associated device, thereby allowing the main …

(57) ABSTRACT A system includes fobs and sensors each of which has a wireless
transceiver, a processor and a battery powering the transceiver and processor. A server …

A medical fluid delivery system includes a dialysis instrument; a disposable pumping
cassette operable with a pumping actuator of the dialysis instrument, the disposable …

SUMMARY OF THE INVENTION RF transponders are commonly classified in terms of the
use they make of an internal power source. A passive tran sponder has no internal power …

57 ABSTRACT Related US Application Data(57)(63) Continuation-in-part of application No.
10/458,690, Y filed on Jun. 11, 2003, now Pat. No. 6,933,849. An object locating, identifying …

A transceiver for a RFID reader and a transceiver for a RFID transponder (tag) allow
communication between the two devices. The RFID reader utilizes an analog front end and …

Pairing is achieved between a host communications device and a peripheral
communications device, in order to establish an ad hoc wireless or wired network. A device …