Abstract:
A mobile device includes a motion detector, a processing unit, and a wireless positioning module. The motion detector is configured to detect a motion of the mobile device to obtain a motion signal. The processing unit is configured to do the followings: process the motion signal to obtain a vibration frequency and a vibration regularity of the mobile device; determine a device activity status of the mobile device according to the vibration frequency and the vibration regularity; and generate a control signal when finding that the device activity status switches from a first activity status to a second activity status. The wireless positioning module is configured to identify a first location of the mobile device in response to the control signal.
Abstract:
A physiological monitoring system is provided. The physiological monitoring system includes a feature extraction device, an identifier, a processor, a physiological sensing device, and a vital-sign detector. The feature extraction device extracts biological information of an object to generate an extraction signal. The identifier receives the extraction signal and verifies an identity of the object according to the extraction signal. The processor receives the extraction signal and obtains at least one biological feature of the user according to the extraction signal. The physiological sensing device senses a physiological feature to generate a bio-signal. The vital-sign detector estimates vital-sign data of the object according to the bio-signal and the at least one biological feature.
Abstract:
A proximity detection method for detecting absorptive and reflective proximal objects using ultrasound signals and an associated electronic device are provided. The electronic device includes an audio codec, and an acoustics module having a microphone and a speaker. The method includes the steps of: utilizing the speaker to emit an ultrasound signal encoded by the audio codec; utilizing the microphone to sense to generate an incoming ultrasound signal associated with the emitted ultrasound signal; decoding the incoming ultrasound signal into ultrasound waves; and analyzing the ultrasound waves to detect the proximity of a proximal object.