Patent ID: 6646680
Filing Date: 2003-11-11
Classification: H04N

Abstract:
A dynamic focusing method for a high-resolution digital camera having an adjustable focusing mechanism and a reduced-resolution electronic viewfinder display, the focusing method comprising:(a) dividing a high-resolution image generated by a high-resolution image sensor into a plurality of blocks of pixels, each block having a plurality of pixels, selecting one pixel from a pixel position within each block, and displaying a reduced-resolution image, with substantially uniform vertical and horizontal scaling, obtained from the selected pixel within each block for at least one display frame on the reduced-resolution viewfinder display; (b) repeating (a) for a prescribed number of times using a different pixel position each time, the prescribed number of times being fewer than the number of pixels in at least one block of pixels; and (c) repeating (b) to produce a periodic sequence of reduced-resolution images.