Techniques to reduce power consumption in near field communication systems
First Claim
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1. An apparatus, comprising:
- a transceiver to communicate in a first frequency range for cellular communication;
circuitry coupled with the transceiver, the circuitry to;
detect a resonant signal in response to a transmission in the first frequency range for cellular communication, the resonant signal to indicate presence of a contactless card; and
enable a near-field communication device based on the detection of the resonant signal, the near-field communication device to communicate with the contactless card in a second frequency range, wherein the first frequency range is different than the second frequency range.
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Abstract
Various embodiments are generally directed to techniques communicate in a cellular communication frequency range, detect a resonant signal in response to the communication in the cellular communication frequency range for cellular communication, the resonant signal to indicate presence of a contactless card. Embodiments also include enabling a near-field communication device to send a communication to the contactless card based on the detection of the resonant signal, the near-field communication device to communicate with the contactless card in a near-field communication frequency range.
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Citations
19 Claims
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1. An apparatus, comprising:
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a transceiver to communicate in a first frequency range for cellular communication; circuitry coupled with the transceiver, the circuitry to; detect a resonant signal in response to a transmission in the first frequency range for cellular communication, the resonant signal to indicate presence of a contactless card; and enable a near-field communication device based on the detection of the resonant signal, the near-field communication device to communicate with the contactless card in a second frequency range, wherein the first frequency range is different than the second frequency range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computer-implemented method, comprising:
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communicating in a cellular communication frequency range; detecting a resonant signal in response to the communication in the cellular communication frequency range for cellular communication, the resonant signal to indicate presence of a contactless card; and enabling a near-field communication device to send a communication to the contactless card based on the detection of the resonant signal, the near-field communication device to communicate with the contactless card in a near-field communication frequency range. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A contactless card, comprising:
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a near-field communication device operable to communicate in a near-field communication range; and a resonant circuit responsive to communications in the cellular frequency range, the resonant circuit to oscillate in response to a communication in a cellular frequency range, and wherein the near-field communication device to receive an energizing signal based on the resonant circuit oscillating and communicate with another near-field communication device of a device. - View Dependent Claims (17, 18, 19)
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Specification