초록 ▼

A camera of the type having a lens drive motor for moving a focus lens, an image pick-up device for converting an optical image passed through the optical system including the focus lens into an image signal, a sampling circuit for sampling the high frequency component value of the image signal, and

A camera of the type having a lens drive motor for moving a focus lens, an image pick-up device for converting an optical image passed through the optical system including the focus lens into an image signal, a sampling circuit for sampling the high frequency component value of the image signal, and a control circuit for controlling the lens drive motor so as to maximize the high frequency component value. The camera has a high frequency component value memory for storing a history of the high frequency component value sampled by the sampling circuit. The control circuit controls the lens drive motor so as to maximize the high frequency component value after the focus adjustment, in accordance with the stored history of the high frequency component value.

대표청구항 ▼

[ What is claimed is:] [1.] A camera device comprising:lens moving means for moving a focus lens;photoelectric converting means for converting an image having passed through said focus lens, into an image signal;sampling means for sampling a focus signal component value of said image signal;storing

[ What is claimed is:] [1.] A camera device comprising:lens moving means for moving a focus lens;photoelectric converting means for converting an image having passed through said focus lens, into an image signal;sampling means for sampling a focus signal component value of said image signal;storing means for storing a set of a plurality of differences between respective focus signal component values time-serially sampled by said sampling means; andcontrolling means for controlling a focus state of said focus lens by predicting a change of the focus state from a variation pattern of said plurality of differences of the set stored in said storing means to control said lens moving means so as to maximize the focus signal component value.