Provided are an RFID tag information reading apparatus and method, including a signal management circuit, configured to output an operation frequency signal; a resonant circuit, configured to receive the operation frequency signal, adjust a capacitance value and an inductance value of the resonant circuit according to the operation frequency signal, so that the resonant circuit generates a resonance for generating a sine wave signal at a frequency point of the operation frequency signal, the resonant circuit is further configured to generate an electromagnetic wave from the sine wave signal, radiate the electromagnetic wave to a tag, and trigger the tag to return a tag identity signal; and a decoding identification circuit, configured to identify tag information according to the tag identity signal returned by the tag; where the signal management circuit is connected with the resonant circuit, and the resonant circuit is connected with the decoding identification circuit.

A wireless electromagnetic coupler arrangement for reactive near field coupling comprising a sequential array of coupling elements which are geometrically arranged one-or two-dimensionally. By means of feeding an unmodulated wave of electromagnetic energy to each of the coupling elements and a respective associated harvester element, in an initial sensing state, an automatic selection of a single coupling element or plural coupling elements which establish a particularly strong and efficient interaction with an inlay is performed. By means of a respective feedback loop, a switchable array of resistances is used to activate the selected coupling element(s) for coupling of information to/from the loop and to de-activate the remaining coupling elements.

This application provides communication apparatuses and methods for signal transmission and reception, applied to, for example, backscatter communications. In an example method, a tag device receives a downlink excitation signal, where the downlink excitation signal is a linear frequency modulated signal or a multi-carrier linear frequency modulated signal. The tag device generates an uplink reflection signal according to the downlink excitation signal and uplink information. The tag device sends the uplink reflection signal to a network device. When receiving the uplink reflection signal from the tag device and receiving the downlink excitation signal, the network device performs fractional Fourier transform on the uplink reflection signal and the downlink excitation signal, to obtain an uplink frequency domain reflection signal and a downlink frequency domain excitation signal. The uplink frequency domain reflection signal and the downlink frequency domain excitation signal do not overlap each other.

Provided are an RFID tag information reading apparatus and method, including a signal management circuit, configured to output an operation frequency signal; a resonant circuit, configured to receive the operation frequency signal, adjust a capacitance value and an inductance value of the resonant circuit according to the operation frequency signal, so that the resonant circuit generates a resonance for generating a sine wave signal at a frequency point of the operation frequency signal, the resonant circuit is further configured to generate an electromagnetic wave from the sine wave signal, radiate the electromagnetic wave to a tag, and trigger the tag to return a tag identity signal; and a decoding identification circuit, configured to identify tag information according to the tag identity signal returned by the tag; where the signal management circuit is connected with the resonant circuit, and the resonant circuit is connected with the decoding identification circuit.

There is described an RFID IC, comprising:

i) an RFID interface configured to receive a digitally modulated signal, wherein the digitally modulated signal comprises: a first slot with a first pulse, and a second slot with a second pulse; and
ii) a processing unit configured to
a) determine a first position of the first pulse in the first slot,
b) filter a region that follows the determined first position of the first pulse,
c) determine a second position of the second pulse in the second slot, and, if the second position of the second pulse cannot be determined in the second slot, assume that the second position of the second pulse in the second slot is at the filtered region.

A process for triggering projected displays can comprise determining that an RFID device has moved within a predetermined range of a first interrogator, wherein the RFID device is carried by a user. The RFID device can be interrogated to determine a first identifier. Based on the first identifier, an identity of the user can be determined. A projection command can be transmitted to a projection source, wherein the projection command comprises the identity of the user and instructive indicia comprising information about a toy, wherein the toy comprises a second RFID device.

There is described an RFID tag IC, comprising: i) an NFC interface configured to initiate a power-up, when coupled with an HF field, and receive a read command from an RFID device; ii) a non-volatile memory, wherein the non-volatile memory is configured to store a counter value; and iii) a processing unit configured to increment the counter value when coupled with the HF field, set an increment flag, when the increment is successful, and thereby block a further increment of the counter value, in particular when fulfilling the read command, and reset the increment flag after fulfilling the read command. Further, a communication system and a method of operating are described.

The present invention provides a method and system for verifying and tracking identification information. In an embodiment of the invention, a system for delivering security solutions is provided that includes at least one of the following: a radio frequency (RF) identification device, an identification mechanism (e.g., a card, sticker), and an RF reader.

In an embodiment a method for dynamic power control of a power level transmitted by an antenna of a contactless reader is disclosed. The method may include supplying a power to the antenna and performing at least one power adjusting cycle for adjusting a power level during a contactless transaction with a transponder, each power adjusting cycle including modifying the power supplied to the antenna to a predetermined level of power, performing a first measuring of a loading effect on the antenna at the predetermined level of power and adjusting the power level according to the measured loading effect.

A mounting base for use with a wirelessly locatable tag may include a base portion defining a latching member configured to engage a wirelessly locatable tag to releasably retain the wirelessly locatable tag to the mounting base, a contact block attached to the base portion and configured to be positioned at least partially within a battery cavity of the wirelessly locatable tag, the contact block defining a top side and a peripheral side. The mounting base may further include a first conductive member positioned along the peripheral side of the contact block and configured to contact a first battery contact in the battery cavity of the wirelessly locatable tag, a second conductive member outwardly biased from the top side of the contact block, the second conductive member configured to contact a second battery contact in the battery cavity of the tag, and a power cable coupled to the base portion.