Abstract: A battery pressure measuring sensor according to an embodiment of the present disclosure includes a substrate; a plurality of variable resistor units provided at a plurality of locations in consideration of a swelling characteristic of a battery on the substrate and configured to change a resistance value within a corresponding resistance range according to a pressure applied to each unit; and a plurality of sensing lines configured to be connected to the plurality of variable resistor units, respectively.

Abstract: A device and a method for sensing brightness, by which a sensing area for measuring the brightness of an object is varied. The variation of the brightness sensing unit is in response to the variation of an image angle that varies according to the zoom position of the lens of a zoom camera. In this manner, photographs with optimum exposure can be obtained. The device comprises a zoom position sensing unit, a brightness sensing unit, and a control unit.

Abstract: A high-speed flash charging system for a camera accelerates flash charging time by storing electrical energy in capacitors in a first charging section when photographing is started after power is applied. When the flash is to be emitted, the system transforms the stored energy and charges a second set of capacitors to be used for powering the flash. After charge is transferred from a capacitor in the first set to the second set, the system determines whether enough charge is present in the second set to activate the flash. If there is not enough charge present, another capacitor from the first set is discharged.