Near field communication circuit
AssigneeInfineon Technologies AG
InventorsThomas Leutgeb, Franz Michael Darrer, Gerald Holweg
Life of this patent
Estimating the term…
Abstract
A near field communication circuit includes an antenna, a circuit logic unit coupled to the antenna, an energy storage coupled to the antenna, and a shunt control circuit, coupled to the antenna, for controlling a first operating voltage provided for the circuit logic unit by the antenna. The circuit logic unit is set up such that in a first mode of operation the circuit logic unit is operated by the first operating voltage provided by the antenna. The circuit logic unit is set up to control the shunt control circuit such that in the first mode of operation at least some of the electric power provided by the antenna is supplied to the energy storage for the purpose of charging same with the electric power.
Claims23
A near field communication circuit, comprising:
- an antenna;
- a circuit logic unit coupled to the antenna;
- an energy storage coupled to the antenna;
- and
- a shunt control circuit, coupled to the antenna, for controlling a first operating voltage provided for the circuit logic unit by the antenna,
- wherein the circuit logic unit is set up such that in a first mode of operation the circuit logic unit is operated by the first operating voltage provided by the antenna, and
- wherein the circuit logic unit is set up to control the shunt control circuit such that in the first mode of operation at least some electric power provided by the antenna is supplied to the energy storage for charging the same with the electric power.
A chip card, comprising:
- a chip card body;
- and
- a near field communication circuit, comprising:
- an antenna;
- a circuit logic unit coupled to the antenna;
- an energy storage coupled to the antenna;
- and
- a shunt control circuit, coupled to the antenna, for controlling a first operating voltage provided for the circuit logic unit by the antenna,
- wherein the circuit logic unit is set up such that in a first mode of operation the circuit logic unit is operated by the first operating voltage provided by the antenna,
- wherein the circuit logic unit is set up to control the shunt control circuit such that in the first mode of operation at least some electric power provided by the antenna is supplied to the energy storage for charging the same with the electric power, and
- wherein the near field communication circuit is embedded in the chip card body.
A communication device, comprising:
- a near field communication circuit, comprising:
- an antenna;
- a circuit logic unit coupled to the antenna;
- an energy storage coupled to the antenna;
- a shunt control circuit, coupled to the antenna, for controlling a first operating voltage provided for the circuit logic unit by the antenna;
- wherein the circuit logic unit is set up such that in a first mode of operation the circuit logic unit is operated by the first operating voltage provided by the antenna;
- wherein the circuit logic unit is set up to control the shunt control circuit such that in the first mode of operation at least some electric power provided by the antenna is supplied to the energy storage for charging the same with the electric power;
- and
- a further circuit coupled to the near field communication circuit,
- wherein the near field communication circuit is set up to switch to a second mode of operation if a temperature of the further circuit reaches or exceeds a prescribed threshold value.
A method for operating a near field communication circuit,
- wherein the near field communication circuit comprises:
- an antenna;
- a circuit logic unit coupled to the antenna;
- an energy storage coupled to the antenna;
- a shunt control circuit, coupled to the antenna, for controlling a first operating voltage provided for the circuit logic unit by the antenna;
- wherein the method comprises:
- operating the circuit logic unit in a first mode of operation by the first operating voltage provided by the antenna;
- and
- controlling, by the circuit logic unit, the shunt control circuit such that in the first mode of operation some of the first operating voltage provided by the antenna is supplied to the energy storage for charging the same with electric power.
Dependencies are inferred from the claim text.