Abstract: An apparatus for generating a data signal comprises a processing circuit configured to generate the data signal, the data signal comprising a sequence of a first signal edge of a first type, a second signal edge of a second type, and a third signal edge of the first type, the first signal edge and the second signal edge being separated by a first time period corresponding to first data to be transmitted, and the second signal edge and the third signal edge being separated by a second time period corresponding to second data to be transmitted. An output interface circuit is configured to output the data signal.

Abstract: A stroke detection system operative to detect strokes suffered by mobile communication device users, the system comprising: a hardware processor operative in conjunction with a mobile communication device having at least one built-in sensor; the hardware processor being configured to, typically repeatedly and typically without being activated by the device's user, compare data derived from the at least one sensor to at least one baseline value for at least one indicator of user well-being, stored in memory accessible to the processor, and/or make a stroke risk level evaluation; and/or perform at least one action if and only if the stroke risk level is over a threshold.

Abstract: A stroke detection system operative to detect strokes suffered by mobile communication device users, the system including a hardware processor operative in conjunction with a mobile communication device having at least one built-in sensor. The hardware processor is configured to, repeatedly and without being activated by the device's user, compare data derived from the at least one sensor to at least one baseline value for at least one indicator of user well-being, stored in memory accessible to the processor and/or make a stroke risk level evaluation; and/or perform at least one action if and only if the stroke risk level is over a threshold.

Abstract: A sensor-driven physiotherapy system comprising an exercise repository electronically storing digitally represented exercises each of which includes exercise quality parameter/s, and/or a hardware processor configured to assign a score for exercise quality parameter/s for each of at least some exercises in the repository, wherein the score is derived from sensor data collected while patients performed the exercises wearing a sensor which generates the sensor data; and/or exercise recommendation functionality to select, from the digitally represented exercises, exercise/s which the system recommends for at least one patient profile e.g. set of patients. Typically the exercise which the system recommends, for a given patient profile, statistically contributes more, to gait improvement of patients belonging to that profile, than exercises which are not recommended for that profile contribute, to gait improvement of patients belonging to that profile.

Abstract: A stroke detection system operative to detect strokes suffered by mobile communication device users, the system comprising a hardware processor operative in conjunction with a mobile communication device having at least one built-in sensor; the hardware processor being configured to, repeatedly and without being activated by the device's user, compare data derived from said at least one sensor to at least one baseline value for at least one indicator of user well-being, stored in memory accessible to the processor and/or make a stroke risk level evaluation; and/or perform at least one action if and only if the stroke risk level is over a threshold.

Abstract: A gait monitoring system operative to monitor gait of an end-user bearing a wearable device equipped with at least one magneto-inertial sensor, the system comprising a processor configured to receive raw sensor data from the wearable device's at least one magneto-inertial sensor to extract situational data from the raw sensor data, the situational data including at least the device's bodily position relative to the end-user, to determine a gait analysis process which yields at least one parameter characterizing the end-user's gait, depending at least on the device's bodily position as extracted, and to compute, and generate an output indication of, the at least one parameter characterizing the end-user's gait, by running the gait analysis process as selected.