Abstract: In one embodiment, an electronic device detachably connected to a mobile device is provided. The electronic device of the embodiment includes a power supply, a detector and a controller. The power supply is configured to supply power to the mobile device when the mobile device is connected to the electronic device. The detector is configured to detect whether a user is within the detector's range. The controller is configured to stop supplying power to the mobile device, when the detector detects a user while the mobile device is connected to the electronic device and to subsequently resume supplying power.

Abstract: According to one embodiment, an electronic apparatus includes a housing, a display in the housing, and electronic components in the housing. The display includes a display surface configured to display an image. The housing includes a first cover, a second cover, and a third cover. The first cover includes a display opening exposing the display surface. The second cover is attached to the first cover and includes a covered surface. The covered surface includes openings configured to expose the electronic components and to allow the electronic components to pass therethrough. The third cover is attached to the second cover. The third cover covers the openings and at least a part of the covered surface.

Abstract: According to one embodiment, an information apparatus includes a stand received in the receiving portion of a housing. The receiving portion has an attachment recess for receiving a chip card. A card slot for inserting the chip card therein is formed in a wall of the attachment recess.

Abstract: According to one embodiment, television receiver includes: display; flat housing; first member; second member; and electric component. The first member includes an opening through which a screen is exposed and a first wall extending in a thickness direction of the housing between one end of the housing at which the opening is provided and another end of the housing opposite the one end. The first wall covers a circumference of the display. The second member includes a second wall located on the other end and covers the display from an opposite side of the screen. The electric component includes a component surface extending along an internal surface of the second wall on a side of the display away from a center of the internal surface. The component surface is adhered to the internal surface.

Abstract: A battery charge circuit using a constant voltage/constant current to power charge a plurality of battery packs, a current detection circuit to detect a charge current according to a predetermined value, and control mechanisms to maintain a constant voltage charge mode when the charge current value drops below a set value within the battery pack.

Abstract: In a battery-driven portable computer, a battery pack is constituted by m battery sets connected in series each including n lithium-ion secondary battery cells connected in parallel. A voltage monitor for monitoring the voltage of the terminal electrode of each battery set and a charger for independently appropriately charging each battery set in accordance with a monitor result are arranged, thereby realizing battery driving by a lithium-ion secondary battery pack having a large capacity. A computer system monitors the voltages of the battery cells which are part of a secondary battery by comparing the battery voltages with a predetermined voltage value in order to detect overdischarge (undervoltage) or overcharge (overvoltage), outputs this information outside of the battery pack, and terminates processing prior to a circuit disconnect.

Abstract: In a battery-driven portable computer, a battery pack is constituted by m battery sets connected in series each including n lithium-ion secondary battery cells connected in parallel. A voltage monitor for monitoring the voltage of the terminal electrode of each battery set and a charger for independently appropriately charging each battery set in accordance with a monitor result are arranged, thereby realizing battery driving by a lithium-ion secondary battery pack having a large capacity.

Abstract: In a battery-driven portable computer, a battery pack is constituted by m battery sets connected in series each including n lithium-ion secondary battery cells connected in parallel. A voltage monitor for monitoring the voltage of the terminal electrode of each battery set and a charger for independently appropriately charging each battery set in accordance with a monitor result are arranged, thereby realizing battery driving by a lithium-ion secondary battery pack having a large capacity.