Abstract: According to an aspect, an electronic device includes: a piezoelectric element; a first sound generating unit that is vibrated by the piezoelectric element and generates a vibration sound transmitted by vibrating a part of a human body; and a second sound generating unit that generates an air conduction sound.

Abstract: According to an aspect, a device includes a touch screen display and a controller. The touch screen display displays an object corresponding to either an application in execution or an application terminated. The controller erases the object when a flick gesture with respect to the object is detected through the touch screen display.

Abstract: A mobile electronic device includes: a communication unit configured to perform short-distance communication with a first device, a notification unit configured to perform a local notification for a user of the mobile electronic device, and a controller configured to cause the notification unit to perform the local notification to the user when the short-distance communication with the first device is incapable of being performed. When the short-distance communication between the mobile electronic device and the first device is incapable of being performed, the controller is configured to transmit, to a second device, an inquiry as to whether the short-distance communication between the first device and the second device is capable of being performed.

Abstract: An object of the present invention is to provide a wireless charging system and a control method thereof, as well as a portable electronic device and a charging device, all of which are capable of performing charging at an appropriate charging level. The wireless charging system includes: a battery charger 100; and a cellular telephone device 1. The cellular telephone device 1 includes: a plurality of power receiving units 10; a charging state monitoring unit 21; and a cellular telephone device side communication unit 14. The battery charger 100 includes: a plurality of power transmitting units 110 that transmit power to the cellular telephone device 1; a battery charger side communication unit 140; and a power transmission control unit 121 that controls transmission of power by the power transmitting units 110, based on a result of monitoring by the charging state monitoring unit 21.

Abstract: According to one of some aspects, a mobile electronic device includes: a communication unit configured to perform short-distance communication with a first device; and a controller configured to perform notification to a user when the short-distance communication with the first device is incapable of being performed.

Abstract: According to an aspect, an electronic device includes: a piezoelectric element; a first sound generating unit that is vibrated by the piezoelectric element and generates a vibration sound transmitted by vibrating a part of a human body; and a second sound generating unit that generates an air conduction sound.

Abstract: According to an aspect, a device includes a touch screen display and a controller. The touch screen display displays an object corresponding to either an application in execution or an application terminated. The controller erases the object when a flick gesture with respect to the object is detected through the touch screen display.

Abstract: An object of the present invention is to provide a wireless charging system and a control method thereof, as well as a portable electronic device and a charging device, all of which are capable of performing charging at an appropriate charging level. The wireless charging system includes: a battery charger 100; and a cellular telephone device 1. The cellular telephone device 1 includes: a plurality of power receiving units 10; a charging state monitoring unit 21; and a cellular telephone device side communication unit 14. The battery charger 100 includes: a plurality of power transmitting units 110 that transmit power to the cellular telephone device 1; a battery charger side communication unit 140; and a power transmission control unit 121 that controls transmission of power by the power transmitting units 110, based on a result of monitoring by the charging state monitoring unit 21.