| 摘要 |
An automatic focusing device includes a motion vector detecting circuit which detects from a picked-up image signal a movement of a picked-up image within an image plane, a filter which extracts a signal of a predetermined frequency component from the picked-up image signal, a gate circuit which takes out from the signal extracted by the filter a signal corresponding to a focus detecting area in the image plane, an area setting circuit which corrects the position of the focus detecting area by controlling the gate circuit on the basis of a detection output of the motion vector detecting circuit, and a driving part which moves a focusing lens to an in-focus position according to the signal extracted by the gate circuit.
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