Patent ID: 7126641
Filing Date: 2006-10-24
Classification: H04N

Abstract:
1. A digital camera comprising: (a) a housing having a lens barrel movable along an optical axis; (b) a zoom lens group and a focus lens group movable relative to one another along the optical axis in the lens barrel; (c) a zoom motor connected to the lens barrel operable for moving the lens barrel to a position corresponding to a selected magnification; (d) a focus motor connected to the focus lens group operable for moving the focus lens group to a focus position corresponding to the selected magnification; (e) a lens cover movable between closed and open positions for protecting at least one lens, and a lens cover driving motor connected to the lens cover, operable for moving the lens cover between closed and open positions; (f) an electric power source; (g) a controller connected to the electric power source and controlling the zoom motor and the focus motor, the controller determining during power initiation whether an amount of voltage decrease from the electric power source terminal voltage value caused by an operation of one of the lens cover driving motor and the zoom motor is less than a predetermined decrease amount value, and if so, controlling the zoom motor and the focus motor to substantially overlap in operation to move the lens groups to initialization positions; and (h) an image sensor supported in the housing for receiving light through the lens groups, and operable for producing data in correspondence with light received through the lens groups for image recording, wherein the amount of voltage decrease corresponds with a difference voltage between a first power source voltage level at a start of power initiation and a second power source voltage level during power initiation.