Method and apparatus for energy harvest from a proximity coupling device
First Claim
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1. A proximity integrated circuit card (PICC), comprising:
- a resonant circuit to receive magnetic energy from a proximity coupling device (PCD);
a rectifier to convert the magnetic energy received at the resonant circuit to a voltage energy;
a capacitor to receive and store the voltage energy from the rectifier;
a Bluetooth Low Energy (BLE) radio to electrically communicate with the capacitor and to be powered by the voltage energy stored in the capacitor; and
a PICC processor to communicate with the PCD through the BLE radio;
wherein the PCD is configured to detect a nearby PICC and to increase duty cycle of the PCD to expose the PICC to increased magnetic field generated by the PCD to thereby charge the PICC during the duty cycle.
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Abstract
The disclosure generally relates to a method and apparatus for energy harvest from a proximity coupling device (PCD) by a proximity integrated circuit card. In one embodiment, the PICC includes an integrated BLE. The BLE may be exclusively charged by the external magnetic field received from the PCD. The PCD may be configured to detect when the PICC is nearby and increase its duty cycle to thereby increase the magnetic field imposed on the PICC. The PICC may include circuitry to receive and convert the magnetic field to electric potential or voltage. The voltage may be store at a capacitor for BLE'"'"'s usage.
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Citations
14 Claims
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1. A proximity integrated circuit card (PICC), comprising:
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a resonant circuit to receive magnetic energy from a proximity coupling device (PCD); a rectifier to convert the magnetic energy received at the resonant circuit to a voltage energy; a capacitor to receive and store the voltage energy from the rectifier; a Bluetooth Low Energy (BLE) radio to electrically communicate with the capacitor and to be powered by the voltage energy stored in the capacitor; and a PICC processor to communicate with the PCD through the BLE radio; wherein the PCD is configured to detect a nearby PICC and to increase duty cycle of the PCD to expose the PICC to increased magnetic field generated by the PCD to thereby charge the PICC during the duty cycle. - View Dependent Claims (2, 3, 4)
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5. A tangible machine-readable non-transitory storage medium that contains instructions, which when executed by one or more processors result in performing operations comprising:
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discovering a proximity integrated circuit card (PICC) within a magnetic field range of a proximity coupling device (PCD); identifying the discovered PICC as having a Bluetooth Low Energy (BLE) communication platform powered by harvested energy; communicating with the PCD through the BLE communication platform of the PICC; increasing duty cycle of the PCD to expose the PICC to increased magnetic field generated by the PCD to thereby charge the PICC during the duty cycle; resuming default duty cycle when the PICC is outside of the magnetic field range of the PCD. - View Dependent Claims (6, 7, 8, 9)
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10. A proximity coupling device (PCD) comprising one or more processors and circuitry, the circuitry including:
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a first logic to discover a proximity integrated circuit card (PICC) within a magnetic field range of the PCD; a second logic to determine the discovered PICC as having a Bluetooth Low Energy (BLE) radio and to direct BLE communication between the PCD and the PICC using the BLE radio, the second logic to identify the discovered PICC as having a Bluetooth Low Energy (BLE) communication platform powered by harvested energy; a third logic to increase duty cycle of the PCD to expose the PICC to increased magnetic field and to thereby charge the PICC during the duty cycle, the third logic configured to resume a default duty cycle when the PICC is outside of the magnetic field range of the PCD. - View Dependent Claims (11, 12, 13, 14)
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Specification