Acoustic wave and radio frequency identification device and method
First Claim
1. A wireless identification method comprising:
- receiving at an acoustic wave and radio frequency identification device an acoustic wave signal of a first frequency and a radio frequency signal of a second frequency, wherein the acoustic wave signal and the radio frequency signal are received from an acoustic wave and radio frequency identification reader, and the first frequency and the second frequency are different frequencies;
providing the received acoustic wave signal to an acoustic wave to DC electrical energy converter for conversion of the received acoustic wave signal into electrical energy at a level commensurate with a strength of the received acoustic wave signal;
providing the received radio frequency signal to a radio frequency to DC rectifier, separate from the acoustic wave to DC electrical energy converter, for conversion of the received radio frequency signal into electrical energy at a level commensurate with a strength of the received RF signal;
providing the electrical energy converted from the received acoustic wave signal and the electrical energy converted from the received radio frequency signal to a controller and identification information circuit;
measuring, by the controller and identification information circuit, a level of electrical energy converted from the received acoustic wave signal;
measuring, by the controller and identification information circuit, a level of electrical energy converted from the received radio frequency signal;
selecting, by the controller and identification information circuit, at least one communications mode of the acoustic wave and radio frequency identification device with which to respond to the receiving, wherein the selecting comprises;
comparing the measured level of electrical energy converted from the received acoustic wave signal to the measured level of electrical energy converted from the received radio frequency signal; and
selecting at least one of an acoustic wave communications mode or a radio frequency communications mode as the at least one communications mode with which to respond to the receiving; and
responding to the receiving by the controller and identification information circuit, via the selected at least one communications mode, by transmitting at least one of an acoustic wave identification or a radio frequency identification from the acoustic wave and radio frequency identification device.
1 Assignment
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Accused Products
Abstract
An identification method and identification device are presented employing radio frequency and acoustic wave communication modes. The identification method includes: receiving at an acoustic wave and radio frequency identification device an acoustic wave signal of a first frequency and a radio frequency signal of a second frequency, where the acoustic wave signal and the radio frequency signal are received from an acoustic wave and radio frequency identification reader, and the first frequency and the second frequency are different frequencies; and responding to the receiving by transmitting at least one of an acoustic wave identification (AWID) or a radio frequency identification (RFID) from the acoustic wave and radio frequency identification device.
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Citations
21 Claims
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1. A wireless identification method comprising:
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receiving at an acoustic wave and radio frequency identification device an acoustic wave signal of a first frequency and a radio frequency signal of a second frequency, wherein the acoustic wave signal and the radio frequency signal are received from an acoustic wave and radio frequency identification reader, and the first frequency and the second frequency are different frequencies; providing the received acoustic wave signal to an acoustic wave to DC electrical energy converter for conversion of the received acoustic wave signal into electrical energy at a level commensurate with a strength of the received acoustic wave signal; providing the received radio frequency signal to a radio frequency to DC rectifier, separate from the acoustic wave to DC electrical energy converter, for conversion of the received radio frequency signal into electrical energy at a level commensurate with a strength of the received RF signal; providing the electrical energy converted from the received acoustic wave signal and the electrical energy converted from the received radio frequency signal to a controller and identification information circuit; measuring, by the controller and identification information circuit, a level of electrical energy converted from the received acoustic wave signal; measuring, by the controller and identification information circuit, a level of electrical energy converted from the received radio frequency signal; selecting, by the controller and identification information circuit, at least one communications mode of the acoustic wave and radio frequency identification device with which to respond to the receiving, wherein the selecting comprises; comparing the measured level of electrical energy converted from the received acoustic wave signal to the measured level of electrical energy converted from the received radio frequency signal; and selecting at least one of an acoustic wave communications mode or a radio frequency communications mode as the at least one communications mode with which to respond to the receiving; and responding to the receiving by the controller and identification information circuit, via the selected at least one communications mode, by transmitting at least one of an acoustic wave identification or a radio frequency identification from the acoustic wave and radio frequency identification device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of facilitating wireless identification, the method comprising:
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outputting from an acoustic wave and radio frequency identification reader an acoustic wave signal of a first frequency and a radio frequency signal of a second frequency, wherein the first frequency and the second frequency are different frequencies; and wherein an acoustic wave and radio frequency identification device receiving the acoustic wave signal of the first frequency and the radio frequency signal of the second frequency responds thereto by; providing the received acoustic wave signal to an acoustic wave to DC electrical energy converter for conversion of the received acoustic wave signal into electrical energy at a level commensurate with a strength of the received acoustic wave signal; providing the received radio frequency signal to a radio frequency to DC rectifier, separate from the acoustic wave to DC electrical energy converter, for conversion of the received radio frequency signal into electrical energy at a level commensurate with a strength of the received RF signal; providing the electrical energy converted from the received acoustic wave signal and the electrical energy converted from the received radio frequency signal to a controller and identification information circuit; measuring, by the controller and identification information circuit, a level of electrical energy converted from the received acoustic signal; measuring, by the controller and identification information circuit, a level of electrical energy converted from the received radio frequency signal; selecting, by the controller and identification information circuit, at least one communications mode of the acoustic wave and radio frequency identification device with which to respond to the receiving, wherein the selecting comprises; comparing the measured level of electrical energy converted from the received acoustic wave signal to the measured level of electrical energy converted from the received radio frequency signal; and selecting at least one of an acoustic wave communications mode or a radio frequency communications mode as the at least one communications mode with which to respond to the receiving; and responding to the receiving by the controller and identification information circuit, via the selected at least one communications mode, by transmitting at least one of an acoustic wave identification or the radio frequency identification. - View Dependent Claims (12, 13, 14, 15)
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16. An acoustic wave and radio frequency identification device comprising:
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an acoustic wave resonator for receiving at the acoustic wave and radio frequency identification device an acoustic wave signal from an acoustic wave and radio frequency identification reader; a radio frequency antenna for receiving at the acoustic wave and radio frequency identification device a radio frequency signal from the acoustic wave and radio frequency identification reader, wherein the acoustic wave signal and the radio frequency signal are at different frequencies; an acoustic wave to DC electrical energy converter configured to convert the received acoustic wave signal to electrical energy commensurate with a strength of the received acoustic wave signal; a radio frequency to DC rectifier, separate from the acoustic wave to DC electrical energy converter, configured to convert the received radio frequency signal to electrical energy at a level commensurate with a strength of the received acoustic wave signal, wherein the converted electrical energies are DC power; and a controller and identification information circuit comprising an integrated circuit electrically coupled to the acoustic wave to DC electrical energy converter, the radio frequency to DC rectifier, and to the acoustic wave resonator and radio frequency antenna, the controller and identification information circuit being configured to; receive the DC power converted from the received acoustic wave signal and the DC power converted from the received radio frequency signal; measure a level of the DC power converted from the received acoustic wave signal, and measure a level of the DC power converted from the received radio frequency signal; select at least one communications mode of the acoustic wave and radio frequency identification device with which to respond to the receiving, wherein the selecting comprises; comparing the measured level of the DC power converted from the received acoustic wave signal to the measured level of the DC power converted from the received radio frequency signal; and select at least one of an acoustic wave communications mode or a radio frequency communications mode as the at least one communications mode with which to respond to the receiving; and respond to at least one of the received acoustic wave signal or the received radio frequency signal via the selected at least one communications mode, by transmitting at least one of an acoustic wave identification or a radio frequency identification from the acoustic wave and radio frequency identification device. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification