초록 ▼

An image pickup device is provided with a phototaking optical system for guiding light from an object to an image sensor which produces image information from the received light; a dividing unit for dividing the image information from the image sensor into plural blocks; an extraction unit for extra

An image pickup device is provided with a phototaking optical system for guiding light from an object to an image sensor which produces image information from the received light; a dividing unit for dividing the image information from the image sensor into plural blocks; an extraction unit for extracting from the plural blocks divided by the dividing unit, those with a relatively high content of high-frequency components; a detection unit for detecting focus information relating to the focus state of the phototaking optical system based on frequency information relating to the frequency components of the blocks extracted by the extraction unit; and a driving unit for driving the phototaking optical system according to the focus information.

대표청구항 ▼

[ What is claimed is:] [1.] An image coding apparatus comprising:a) a phototaking optical system for guiding light from an object to an image sensor which produces image information in accordance with the light received from said object;b) division means for dividing the image information from said

[ What is claimed is:] [1.] An image coding apparatus comprising:a) a phototaking optical system for guiding light from an object to an image sensor which produces image information in accordance with the light received from said object;b) division means for dividing the image information from said image sensor into a plurality of separate blocks;c) transformation means for transforming the image information divided by said dividing means into frequency information;d) extraction means for extracting from said plurality of blocks transformed by said transformation means, a number of blocks which have a high content of high-frequency components;e) means for providing focus information for focusing the light received from the object by said phototaking optical system on the basis of frequency information relating to the frequency components of said blocks extracted by said extraction means;f) drive means for driving said phototaking optical system according to the focus information; andg) compression means for compression encoding the image information transformed by said transformation means.