Abstract: The present invention relates to coupler device, processing apparatus and method of processing a plurality of body-coupled communication signals which have been detected by using an electrode arrangement with a plurality of electrodes or electrode segments (40, 42; 40, 43). Respective transmission parameters of the body-coupled communication signals are estimated and at least one of a selecting and weighting processing is applied to the detected body-coupled communication signals based on the estimated transmission parameters. Then, the processed body-coupled communication signals are combined to generate a diversity output signal. Thereby, robustness against coupler misplacement and user convenience is increased in body-coupled or body-based communication systems.

Abstract: A device (100) which is placeable on or close to a human or animal body has at least a sensing unit (105) configured to capacitively sense a physiological signal from the human or animal body and capacitively communicate a body coupled communication signal. As sensing and body coupled communication capabilities can be provided by a single sensing unit, disadvantages of previous solutions for sensing and communicating like e.g. clutter of wires or increased costs and power consumption due to extra communication hardware can be alleviated.

Abstract: A direction controllable lighting unit 10 for use in a lighting system is described. The light emission of the lighting unit 10 may be directed into different directions, e. g. by use of a mechanically movable element 14, 60. At least two ultrasound transmitters 20a, 20b, or ultrasound receivers 21a, 21b are disposed at the lighting unit 10 such that they differ in position, or in direction or shape of the spatial intensity distribution or spatial distribution of reception sensitivity. A mobile control element 46 has at least one corresponding ultrasound transmitter or receiver 50. A difference between a signal from a transmitter received at multiple receivers, or a signal of multiple transmitters received at a single receiver is used to determine a relative direction of the direction controllable lighting unit 10 and the control element 46, and to control the direction of the lighting unit 10 in dependence thereof.