Abstract: A contactless user device for contactless communication with an external reader device includes an antenna loop that at least partially surrounds a hollow ferrite core, the hollow core including a ferrite wall that at least partially surrounds a space without ferrite. A circuit board is located within the space. The circuit board includes a contactless chip that is configured for contactless communication with the external reader device via the antenna.

Abstract: An adapter for converting signals in a first format to signals in a second format for enabling a personal electronic device such as laptop computer, tablet computer, smartphone and the like, to communicate with a contactless smart card reader via another adapter. Embodiments include an adapter for enabling a personal electronic device to communicate, via communication channel comprising data signals over universal serial bus (USB) channel, with a contactless smart card reader.

Abstract: An adapter for converting signals in a first format to signals in a second format for enabling a personal electronic device such as laptop computer, tablet computer, smartphone and the like, to communicate with a contactless smart card reader via another adapter. Embodiments include an adapter for enabling a personal electronic device to communicate, via communication channel comprising data signals over universal serial bus (USB) channel, with a contactless smart card reader.

Abstract: There is provided a method for identifying one of a plurality of neutral wires of a power transmission cable. The method comprises (a) applying a signal to a selected neutral wire, at a first point on the power transmission cable, (b) sensing a relative magnitude of the signal on each of the plurality of neutral wires at a second point on the power transmission cable that is remote from the first point, and (c) identifying the selected neutral wire from the relative magnitudes. There is also provided a system for identifying one of a plurality of neutral wires of a power transmission cable.

Abstract: There is provided an apparatus for enabling communication of a data signal via a power transmission cable. The apparatus comprises (a) a first winding for coupling the data signal via a conductor of the power transmission cable, and (b) a second winding, inductively coupled to the first winding, for coupling the data signal via a data port.

Abstract: There is provided an apparatus for enabling communication of a data signal via a power transmission cable. The apparatus comprises (a) a first winding for coupling the data signal via a conductor of the power transmission cable, and (b) a second winding, inductively coupled to the first winding, for coupling the data signal via a data port.

Abstract: A power and data transfer system includes a portable device with a first contact circuit formed from a pair of contact pads having an outer surface covered with a dielectric material. A processing unit is coupled to the first contact circuit. A host unit has a second contact circuit including a second pair of contact pads which are also covered with a dielectric material. A host processing unit is coupled to the second contact circuit. The first and second contact circuits are adapted to form a capacitive interface when the portable device is positioned proximate the host unit. The capacitive interface transmits power signals from the host unit to the portable device. The same contacts are used to transmit bi-directional data signals between the portable device and the host unit.