Abstract: Sensors (1) for sensing accelerations are provided with accelerometers (11) for measuring accelerations, with magnetometers (12) for measuring magnetic fields, and with processors (13) for, in response to acceleration measurements and magnetic field measurements, judging the accelerations. The processors (13) may comprise acceleration units (14) for comparing acceleration signals with acceleration thresholds, and magnetic field units (15) for comparing changes of magnetic field signals per time interval with rate thresholds. The processors (13) may further comprise decision units (17) for, in response to comparison results from the acceleration units (14) and the magnetic field units (15), deciding whether a total acceleration forms part of a tumbling free-fall or a non-tumbling free-fall or not. The processors (13) may yet further comprise distinguishing units (18) and control units (19). Devices (2) may comprise sensors (1).

Abstract: Magnetic field sensors (1) comprising field detectors (10) for detecting magnetic fields are provided with environment detectors (11) for detecting environments and with processors (12) for, in response to detected environments, performing processes such as loading calibration parameter sets and (re)calibrations for the field detectors (10), to allow the magnetic field sensors (1) to be used in different subsequent environments. The environment detectors (11) may comprise code detectors for detecting codes indicative for environments and may comprise user interfaces (13) for, in response to detected environments and via user interactions, selecting processes to be performed by the processors (12). Devices (2) comprise magnetic field sensors (1). Apparatuses (3) such as cradles removably fix the devices (2) and may comprise code generators (30) for generating the codes indicative for the environments.

Abstract: Sensors (1) for sensing accelerations are provided with accelerometers (11) for measuring accelerations, with magnetometers (12) for measuring magnetic fields, and with processors (13) for, in response to acceleration measurements and magnetic field measurements, judging the accelerations. The processors (13) may comprise acceleration units (14) for comparing acceleration signals with acceleration thresholds, and magnetic field units (15) for comparing changes of magnetic field signals per time interval with rate thresholds. The processors (13) may further comprise decision units (17) for, in response to comparison results from the acceleration units (14) and the magnetic field units (15), deciding whether a total acceleration forms part of a tumbling free-fall or a non-tumbling free-fall or not. The processors (13) may yet further comprise distinguishing units (18) and control units (19). Devices (2) may comprise sensors (1).

Abstract: Magnetic field sensors (1) comprising field detectors (10) for detecting magnetic fields are provided with environment detectors (11) for detecting environments and with processors (12) for, in response to detected environments, performing processes such as loading calibration parameter sets and (re)calibrations for the field detectors (10), to allow the magnetic field sensors (1) to be used in different subsequent environments. The environment detectors (11) may comprise code detectors for detecting codes indicative for environments and may comprise user interfaces (13) for, in response to detected environments and via user interactions, selecting processes to be performed by the processors (12). Devices (2) comprise magnetic field sensors (1). Apparatuses (3) such as cradles removably fix the devices (2) and may comprise code generators (30) for generating the codes indicative for the environments.

Abstract: A data handling device is provided with a data memory (10) with an address input and a data output, for outputting multi-bit words. The data memory (10) has a structure that gives rise to potential errors at correlated positions in words from a group of words. An erasure memory unit (16) stores bit position information associated with a group of the words, and outputs the bit position information when a word from the group for which bit position information is stored is addressed in the data memory (10). An error correction and detection unit (12) is arranged to correct words from the data memory (10), using error erasure for bits at bit positions selected by the bit position information from the erasure memory unit (16) for the groups to which the words belong.