Communication device with RFID functions
First Claim
Patent Images
1. A portable communication device, comprising:
- means for transmitting electromagnetic signals;
means for receiving electromagnetic signals; and
means for adapting the transmitting means and the receiving means to transmit a radio frequency interrogation signal and to receive a backscatter modulated reflected signal.
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Accused Products
Abstract
A communication device having radio frequency identification capabilities including an adapter of existing transmission and reception circuitry for transmitting an interrogation signal and receiving a backscatter modulated return signal. The device can be further modified to retransmit the backscatter modulated return signal, display the same to a user through an interface, or process the same in the device, or a combination of the foregoing. A communication device is also provided having RFID and other communication capabilities and software drivers are utilized to control operation of the device in an RFID interrogation mode.
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Citations
25 Claims
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1. A portable communication device, comprising:
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means for transmitting electromagnetic signals;
means for receiving electromagnetic signals; and
means for adapting the transmitting means and the receiving means to transmit a radio frequency interrogation signal and to receive a backscatter modulated reflected signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An enhanced portable telephone, comprising:
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an antenna circuit configured to transmit and receive voice and data signals;
a receiver circuit coupled to the antenna and configured to receive the voice and data signals;
a transmitter circuit coupled to the antenna circuit and configured to transmit voice and data signals;
means for adapting the transmitter circuit to transmit radio frequency interrogation signals; and
means for adapting the receiver circuit to receive backscatter modulated reflected signals. - View Dependent Claims (8, 9)
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10. An enhanced modem, comprising:
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means for translating a modulated signal;
means for receiving and demodulating a modulated signal;
means for adapting the transmitting means to transmit a radio frequency interrogation signal; and
means for adapting the receiver to receive backscatter modulated reflected signals responsive to the interrogation signals. - View Dependent Claims (11, 12, 13)
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14. A communication device with parasitic reader, comprising:
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a transceiver circuit coupled to an antenna for transmitting and receiving signals, the transceiver circuit including a processing circuit; and
means for adapting the processing circuit to control the transceiver circuit to generate radio frequency interrogation signals and to receive and process backscatter modulated reflected signals responsive to the transmitted interrogation signals. - View Dependent Claims (15)
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16. An enhanced radio frequency transceiver, comprising:
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a radio frequency transceiver circuit coupled to an antenna circuit for transmitting and receiving data signals;
a voice transceiver circuit coupled to the antenna circuit for the transmission of radio frequency interrogation signals and for receiving backscatter modulated reflected signals responsive to the interrogation signals; and
means for adapting the radio frequency transceiver circuit to transmit and receive voice signals and for generating audible sound responsive to the voice signals. - View Dependent Claims (17)
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18. An enhanced radio frequency transceiver, comprising:
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a radio frequency transceiver circuit coupled to an antenna circuit for transmitting radio frequency interrogation signals and receiving backscatter modulated reflected signals responsive to the interrogation signals; and
means for adapting the radio frequency transceiver circuit to process modulation-demodulation signals. - View Dependent Claims (19)
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20. A radio frequency identification system combined with existing source, comprising:
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a source for generating and transmitting electromagnetic signals;
means for receiving electromagnetic signals;
means for adapting the transmitting means and the receiving means to transmit a radio frequency interrogation signal and to receive a backscatter modulated reflected signal; and
a radio frequency transponder configured to receive the interrogation signal and to reflect the backscatter modulated signal responsive to the interrogation signal. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification