Patent ID: 7333138

Claim:
A white balance adjustment method for a digital image device having an image-capturing device for photoelectrically changing an optical image focused through a lens unit, and for converting a signal output from the image-capturing device into a digital signal and processing input color data which is output in a predetermined period, comprising the steps of: changing a range of established luminance levels every predetermined period, and luminance-dividing and storing color data, from the input color data, which belongs to the range of the established luminance level; detecting a white color out of the luminance-divided and stored color data, and setting a range of luminance levels to which the detected white color belongs for a range of clip luminance levels; dividing an image captured on the image-capturing device into a predetermined number of windows, and view-dividing and storing color data in the window which belongs to the range of clip luminance levels with changing the windows every predetermined period; and calculating a final white color value based on the view-divided and stored color data.