US 10,503,939 B2 · Method and apparatus for energy harvest from a proximity coupling device

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.

Claims14

Dependent claims

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.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/582,344Filed 24 Dec 2014

Published

US 2016/0188919 A130 Jun 2016

Granted

10 Dec 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

G06K 7/10158
Sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves: methods and means used by the interrogation device for…
G06K 19/0709
The source being electromagnetic or magnetic: the source being an interrogation field
H02J 50/001
Circuit arrangements or systems for wireless supply or distribution of electric power: energy harvesting or scavenging
H02J 50/12
Using inductive coupling: of the resonant type

Method and apparatus for energy harvest from a proximity coupling device

Life of this patent

Method and apparatus for energy harvest from a proximity coupling device

Life of this patent

Abstract

Claims14