Abstract: A tracking and ranging system includes a thermal sensor device, a controller, a ranging device and a transmission device. The thermal sensor device is configured to capture a thermal image. The controller analyzes the thermal image to identify the main heat source from among the heat sources displayed in the thermal image, and obtain an offset distance between the center points of the main heat source and the thermal image. The ranging device is coupled to the controller. The transmission device loads the ranging device and is coupled to the controller. The controller controls the motion of the transmission device in accordance with the offset distance to correct the offset angle between the ranging device and the object corresponding to the main heat source. After correcting the offset angle, the ranging device detects a first distance to the object by transmitting energy and receiving reflected energy.

Abstract: A tracking and ranging system includes a thermal sensor device, a controller, a ranging device and a transmission device. The thermal sensor device is configured to capture a thermal image. The controller analyzes the thermal image to identify the main heat source from among the heat sources displayed in the thermal image, and obtain an offset distance between the center points of the main heat source and the thermal image. The ranging device is coupled to the controller. The transmission device loads the ranging device and is coupled to the controller. The controller controls the motion of the transmission device in accordance with the offset distance to correct the offset angle between the ranging device and the object corresponding to the main heat source. After correcting the offset angle, the ranging device detects a first distance to the object by transmitting energy and receiving reflected energy.

Abstract: An ultrasound ranging device is provided. The ultrasound ranging device includes an ultrasound transmitter, an ultrasound receiver, a light sensor and a processor. The ultrasound transmitter transmits an ultrasonic signal. The ultrasound receiver receives a reflected signal which is generated when the ultrasonic signal meets an obstacle. The light sensor receives light-source data from an external light-source device. The processor is coupled to the light sensor to obtain the light-source data from the light sensor. The processor performs a time calibration according to the light-source data. In addition, after the time calibration, according to barcode information corresponding to the processor, the processor determines the time interval in which the ultrasound transmitter transmits the ultrasonic signal.

Abstract: A mobile phone comprises: a casing, a battery cover, a fastener, an elastic member and a ring. The casing has a receiving room and an opening connected to the receiving room. The battery cover is disposed on the casing removably. The fastener is movably disposed in the receiving room along a first direction and a second direction. The elastic member disposed in a bottom of the receiving room is against the fastener to provide a resilient force parallel to the first direction so as to couple the fastener and the battery cover. The ring is fastened on the casing via the opening. When the fastener is pressed, the fastener moves to the first direction to depart the battery cover from the casing. When the fastener is pushed, the fastener moves to the second direction to depart the ring from the casing.

Abstract: An electronic appliance includes a housing, a light module installed inside the housing, an optical sensor installed inside the housing for sensing external light so as to generate a first color signal of a first color space, an image processor for converting the first color signal transmitted from the optical sensor into a second color signal of a second color space, and a controller for adjusting an input voltage of the light module according to the second color signal so as to adjust luminance of the light module.

Abstract: A mobile phone comprises: a casing, a battery cover, a fastener, an elastic member and a ring. The casing has a receiving room and an opening connected to the receiving room. The battery cover is disposed on the casing removably. The fastener is movably disposed in the receiving room along a first direction and a second direction. The elastic member disposed in a bottom of the receiving room is against the fastener to provide a resilient force parallel to the first direction so as to couple the fastener and the battery cover. The ring is fastened on the casing via the opening. When the fastener is pressed, the fastener moves to the first direction to depart the battery cover from the casing. When the fastener is pushed, the fastener moves to the second direction to depart the ring from the casing.