Abstract: Methods, circuits and computer program products are presented herein. The method includes isolating a ripple waveform from a current signal originating from a brushed direct current motor (BDCM). The method includes determining the wave count of the ripple waveform. The method includes determining a position of a movable structure operably coupled to a shaft of the BDCM according to the wave count of the ripple waveform. The present technology may be practiced without discrete capacitor components in high pass filtering aspects of the disclosed circuit. The methods, circuits and computer program products can be implemented to accurately determine a rotational position of a shaft of a BDCM and also position(s) of mechanism(s) coupled to the shaft without requiring any external sensors or other components for this purpose other than the disclosed circuits.

Abstract: A method includes: periodically receiving data via a ubiquitous network from each of a plurality of devices, where each of the devices is associated with one of the plurality of entities and has a unique identifier; determining, as a function of the received data, a plurality of temporal locations for each of the plurality of entities, each of the temporal locations identifying a time and place where an associated entity was located; and, correlating encounters between two or more of the plurality of entities with incidence data associated with an incident, wherein an encounter is registered when a temporal location of a first of the plurality of entities is within a predefined proximity of at least a second of the plurality of entities within a physical zone associated with the incident.

Abstract: A human machine interface (HMI) system and method of operating. The system includes capacitive measurement circuitry coupled to one or more capacitive touch elements, and piezoelectric measurement circuit including interface circuitry coupled to one or more piezoelectric touch elements. The capacitive measurement circuitry includes a gain stage configured to amplify a signal corresponding to a capacitance at the one or more capacitor input terminals by a gain level for communication to processing circuitry. Gain control circuitry is configured to increase the gain level of the gain stage of the capacitive measurement circuitry responsive to the piezoelectric measurement circuitry receiving a user input from at least one of the piezoelectric touch elements. Implementations that further include piezoelectric drive circuitry for haptic output and clearing debris from the keypad are also disclosed.

Abstract: Systems and methods are disclosed for identifying ones of a plurality of entities, such as humans, of the occurrence of an incident proximate individual ones of the entities. The method includes the steps of: periodically receiving data via a ubiquitous network from each of a plurality of devices, wherein each of the devices is associated with one of the plurality of entities and has a unique identifier; determining, as a function of the received data, a plurality of temporal locations for each of the plurality of entities, each of the temporal locations identifying a time and place where an associated entity was located; and, correlating encounters between two or more of the plurality of entities with incidence data associated with an incident, wherein an encounter is registered when a temporal location of a first of the plurality of entities is within a predefined proximity of at least a second of the plurality of entities within a physical zone associated with the incident.

Abstract: A human machine interface (HMI) system and method of operating. The system includes capacitive measurement circuitry coupled to one or more capacitive touch elements, and piezoelectric measurement circuit including interface circuitry coupled to one or more piezoelectric touch elements. The capacitive measurement circuitry includes a gain stage configured to amplify a signal corresponding to a capacitance at the one or more capacitor input terminals by a gain level for communication to processing circuitry. Gain control circuitry is configured to increase the gain level of the gain stage of the capacitive measurement circuitry responsive to the piezoelectric measurement circuitry receiving a user input from at least one of the piezoelectric touch elements. Implementations that further include piezoelectric drive circuitry for haptic output and clearing debris from the keypad are also disclosed.