Abstract: Magnetic field sensors of mobile devices are used for providing the mobile devices with information at a locally extremely restricted area in that, specifically, a magnetic field modulated with the information is locally generated at this position by an information signal generator.

Abstract: Mostly, motion signals are inaccurate, especially if the mobile device is not a proprietary device, and one has to reckon that the bearer wears the mobile device somewhere else than where it is supposed to be worn in order to coincide with the laboratory conditions. However, the information conveyed by the motion signals is sufficient in order to discriminate and detect between different typical wearing/carrying conditions, and accordingly position tracking based on such motion signals may be rendered far more efficiently by, first of all, using the motion signals gained from the one or more motion sensors so as to attribute them to one of a plurality of analysis parameter sets so as to obtain a selected analysis parameter set and, second, analyzing the motion signals using the selected analysis parameter set so as to obtain a signal indicating a locomotion of the bearer.

Abstract: A mobile device is configured for determining a position of the mobile device within buildings, the mobile device including: one or more motion sensors; one or more proximity sensors; a relative feature spot map establishing module; wherein the relative feature spot map establishing module is configured for transmitting the one or more relative feature spot maps to an absolute coordinates determining module configured for determining absolute coordinates of the mobile device; wherein the absolute coordinates determining module is configured for determining the absolute coordinates of the position of the mobile device by determining to which absolute feature spot map of the absolute feature spot maps the one or more relative feature spot map correspond.

Abstract: Mostly, motion signals are inaccurate, especially if the mobile device is not a proprietary device, and one has to reckon that the bearer wears the mobile device somewhere else than where it is supposed to be worn in order to coincide with the laboratory conditions. However, the information conveyed by the motion signals is sufficient in order to discriminate and detect between different typical wearing/carrying conditions, and accordingly position tracking based on such motion signals may be rendered far more efficiently by, first of all, using the motion signals gained from the one or more motion sensors so as to attribute them to one of a plurality of analysis parameter sets so as to obtain a selected analysis parameter set and, second, analyzing the motion signals using the selected analysis parameter set so as to obtain a signal indicating a locomotion of the bearer.

Abstract: The relation between realization effort for a positioning system on the one hand and positioning accuracy on the other hand is improved by using, for determining the position of a mobile portable device, two sensors within the device, namely one sensor for detecting the movement of the mobile portable device as well as one sensor for detecting the approximation of the mobile portable device to one or several reference beacons, wherein, from a knowledge of a position of the one or several reference beacons by means of data provided by the sensor detecting the movement, the position of the mobile portable device relative to the one or several reference beacons is calculated.

Abstract: Magnetic field sensors of mobile devices are used for providing the mobile devices with information at a locally extremely restricted area in that, specifically, a magnetic field modulated with the information is locally generated at this position by an information signal generator.