Patent ID: 6683643
Filing Date: 2004-01-27
Classification: H04N

Abstract:
A camera, comprising:an image pickup element for converting optical image information into electric signals and for outputting the electric signals as image data; a positional information output means for outputting positional information of a defective pixel; a memory in which the positional information is stored; a focus controlling means for controlling a focus; and a defocus control means for controlling said focus controlling means so that a focus is deviated for defocusing from the focused position, wherein said image pickup element converts optical image information when the focus is deviated from the focused position by the defocus control means into electric signals, and outputs them as defocused image data, and, thereafter, the positional information output means compares said defocused image data or data based on said defocused image data with a first reference data and outputs the positional information of a defective pixel having image data which satisfies a prescribed condition as a result of the comparison.