Image pickup apparatus
AssigneeCanon Kabushiki Kaisha
InventorHirofumi Suda
Life of this patent
Estimating the term…
Abstract
A video camera includes a viewpoint detector for detecting the viewpoint of an operator in a photographing screen, a frame setting circuit for independently setting AF and AE frames to have the viewpoint position in the screen detected by the viewpoint detector as the central position, a focus detection circuit for performing focus detection on the basis of an image signal component corresponding to a portion within the AF frame set by the frame setting circuit, a photometry circuit for performing a photometry operation in accordance with an image signal component corresponding to a portion within the AE frame, and a control circuit for controlling the AF and AE frames so that they do not fall outside the screen.
Claims26
An image pickup apparatus comprising:
- image pickup means for producing a video signal;
- position designation means for designating a position in a screen and for generating position information;
- first photometric gate means for movably setting a first photometric detection area in the screen at a first position determined in accordance with the position information designated by said position designation means, and for extracting a first signal, corresponding to the first photometric detection area, from the video signal produced by said image pickup means;
- and
- second photometric gate means for movably setting a second photometric detection area in the screen at a second position different from the first position determined in accordance with the position information designated by said position designation means regardless of the first position of the first photometric detection area set by said first photometric gate means, and for extracting a second signal having different components than the first signal, corresponding to the second photometric detection area, from the video signal produced by said image pickup means.
An image pickup apparatus comprising:
- image pickup means;
- position designation means for designating an arbitrary position on a screen;
- area setting means for setting on the screen a predetermined detection area to have the position designated by said position designation means;
- and
- control means for correcting said area setting means to move the predetermined detection area according to the position designated by said position designation means until a periphery of the predetermined detection area arrives to an end side of the screen and to inhibit movement of the predetermined detection area to an outside of the screen regardless of the position being designated in the screen by said position designation means after the periphery of the predetermined detection area arrives to the end side of the screen.
An image display apparatus comprising:
- display means for displaying an image on a screen;
- position, designation means for designating an arbitrary position in the screen;
- area setting means for setting on the screen a predetermined image information read-out area at the position designated by said position designation means;
- and
- limiting means for controlling said area setting means to move the predetermined image information read-out area according to the position designated by said position designation means until a periphery of the predetermined image information read-out area arrives to an end side of the screen and to limit a movement of the predetermined image information read-out detection area to an outside of the screen regardless of the position being designated in the screen by said position designation means after the periphery of the predetermined image information read-out area arrives to the end side of the screen.
An image processing apparatus comprising:
- image receiving means;
- position designation means for designating an arbitrary position in a screen;
- area setting means for setting on the screen a predetermined image area at the position designated by said position designation means;
- and
- control means for controlling said area setting means to move the predetermined image area according to the position designated by said position designation means until a periphery of the predetermined image area arrives to an end side of the screen and to inhibit a movement of the predetermined image area to an outside of the screen regardless of the position being designated in the screen by said position designation means after the periphery of the predetermined image area arrives to the end side of the screen.
Dependencies are inferred from the claim text.