Abstract: A power transmitter according to an embodiment of the present technology includes an antenna unit and a signal generation circuit. The antenna unit includes a first antenna conductor used in contact with a human body unconnected to ground of earth, and a second antenna conductor that is capacitively coupled to the ground of the earth without being brought into contact with the human body. The signal generation circuit applies an alternating current power signal between the first antenna conductor and the second antenna conductor.

Abstract: An electronic device includes an inertial force sensor, a memory unit, and a control unit connected to the inertial force sensor and the memory unit. The control unit includes a characteristic-waveform processor and an authenticator. The characteristic-waveform processor is operable to generate a characteristic waveform based on output waveforms output from the inertial force sensor in response to operations performed by a first user, and to record the characteristic waveform in the memory unit. The authenticator is operable to generate a reference waveform based on one or more output waveforms output from the inertial force sensor in response to respective ones of one or more operations performed by a second user, and to determine whether or not the first user and the second user are identical to each other by comparing the reference waveform with the characteristic waveform. This electronic device performs accurate authentication with a simple structure.

Abstract: The electronic device, which is to be carried by the user, has a first inertial force sensor, a second inertial force sensor, an action-mode determiner, and a controller. The action-mode determiner determines an action mode of the user based on at least one of a first inertial force signal fed from the first inertial force sensor and a second inertial force signal fed from the second inertial force sensor. When the action-mode determiner determines that the user starts a first action based on the first inertial force signal or on both of the first inertial force signal and the second inertial force signal, the controller reduces power to be supplied to the first inertial force sensor.

Abstract: An electronic device includes an inertial force sensor, a memory unit, and a control unit connected to the inertial force sensor and the memory unit. The control unit includes a characteristic-waveform processor and an authenticator. The characteristic-waveform processor is operable to generate a characteristic waveform based on output waveforms output from the inertial force sensor in response to operations performed by a first user, and to record the characteristic waveform in the memory unit. The authenticator is operable to generate a reference waveform based on one or more output waveforms output from the inertial force sensor in response to respective ones of one or more operations performed by a second user, and to determine whether or not the first user and the second user are identical to each other by comparing the reference waveform with the characteristic waveform. This electronic device performs accurate authentication with a simple structure.

Abstract: An electronic apparatus includes a touch panel, an acceleration detector, an angular velocity detector, and a controller. The touch panel has an operation surface, and detects a contact with the operation surface and outputs a contact detection signal. The acceleration detector detects an acceleration of the electronic apparatus, and outputs an acceleration signal. The angular velocity detector detects an angular velocity of the electronic apparatus, and outputs an angular velocity signal. The controller is connected to the touch panel, the acceleration detector, and the angular velocity detector. When the acceleration signal is input from the acceleration detector and the angular velocity signal is input from the angular velocity detector, the controller outputs the contact detection signal as a contact determination signal.

Abstract: An electronic device includes a housing having a display, an angular velocity sensor, an acceleration sensor, and a controller. The angular velocity sensor detects an angular velocity around the X axis parallel to the display. The acceleration sensor detects an acceleration along the Z axis, which is perpendicular to the display and orthogonal to the X axis. The controller performs a first process when the angular velocity sensor detects a positive angular velocity first and then detects a negative angular velocity, and the acceleration sensor detects a change in the acceleration along the Z axis. The controller, on the other hand, performs a second process when the angular velocity sensor detects a negative angular velocity first and then detects a positive angular velocity, and the acceleration sensor detects a change in the acceleration along the Z axis.