Abstract: A power transmission apparatus includes a controller that controls a power transmitter that performs wireless power transmission. The controller is configured to: cause the processor to: cause the power transmitter to emit a first power transmission beam for which a first power is set; acquire feedback information on a result of reception of the first power transmission beam in a power reception apparatus; identify a power receiving capability in the power reception apparatus; and determine, with reference to the power receiving capability and the reception result, a second power which is usable in wireless power supply for the power reception apparatus and which is larger than the first power. The power receiving capability includes a maximum value of an input power range of the power reception apparatus. The wireless power transmission uses an electromagnetic wave having a frequency equal to or higher than that of a microwave.

Abstract: An antitheft apparatus includes: a mechanism for acquiring first event information related to an alert mode; a mechanism for controlling the alert mode in accordance with the first event information; a mechanism for monitoring movement of an object when the alert mode is enabled; and a mechanism for outputting an alarm when the alert mode is enabled and movement of the object is detected.

Abstract: A power transmission apparatus according to an aspect of the present disclosure includes a control unit that controls a power transmitting unit that performs wireless power transmission. The control unit causes the power transmitting unit to radiate a power transmission beam for supplying electrical power to a target power reception apparatus in accordance with a control parameter related to a radiation direction and a beam shape of the beam. The control unit refers to a position of an edge in an image obtained by photographing a periphery of the target power reception apparatus and monitoring entry of a biological body or an object with respect to a no-entry region that is created in a periphery of a path of the beam. The control unit stops radiation of the beam when entry of a biological body or an object with respect to the no-entry region is detected.

Abstract: A power transmission apparatus includes a controller that controls a power transmitter that performs wireless power transmission. The controller is configured to: cause the processor to: cause the power transmitter to emit a first power transmission beam for which a first power is set; acquire feedback information on a result of reception of the first power transmission beam in a power reception apparatus; identify a power receiving capability in the power reception apparatus; and determine, with reference to the power receiving capability and the reception result, a second power which is usable in wireless power supply for the power reception apparatus and which is larger than the first power. The power receiving capability includes a maximum value of an input power range of the power reception apparatus. The wireless power transmission uses an electromagnetic wave having a frequency equal to or higher than that of a microwave.