JP2008236799A5

JP2008236799A5 -

Info

Publication number: JP2008236799A5
Application number: JP2008158513A
Authority: JP
Filing date: 2008-06-17
Publication date: 2009-07-23

Claims

An imaging apparatus having an electronic zoom function,
An image sensor that images a subject and outputs image data;
Mode setting means for setting either the first processing mode or the second processing mode;
An angle-of-view instruction means for instructing an angle of view;
Based on the processing mode set by the mode setting means and the angle of view instructed by the angle of view instruction means, the image sensor is driven and controlled by switching the range and method of reading image data from the image sensor. A first angle of view changing means for changing the angle of view;
Second angle of view changing means for processing the image data output from the image sensor and changing the angle of view designated by the angle of view instruction means ;
Display means for displaying the image data processed by the second angle-of-view changing means at a preset rate ;
In the first processing mode, the angle of view is changed using the first and second angle-of-view changing means, and the display means processes the image data processed by the second angle-of-view changing means every other frame. The first angle-of-view changing means switches the reading range and reading method of the image data in a frame in which the image data is not displayed . In the second processing mode, the image data is read when the angle of view is changed. An image pickup apparatus characterized in that the angle of view is changed using the second angle of view changing means without switching the range and the reading method.

In the second processing mode, when the angle of view is changed in the wide-angle direction, the reading range is widened by the first angle-of-view changing means before the angle-of-view changing by the second angle- of-view changing means , The imaging apparatus according to claim 1, wherein the reading method is switched and fixed.

When the angle of view changes in the wide direction in the second processing mode, when the change instruction by the angle indicating means is completed, to claim 1 or 2, characterized in that switching to the first processing mode The imaging device described.

Wherein when the angle of view changes in the wide angle direction in the second processing mode, when detecting the widest angle magnification image pickup apparatus according to claim 1 or 2, characterized in that switching to the first processing mode.

With the switching to the first processing mode, claim to the shifting amount set in advance the focusing lens from the in-focus position, characterized in that gradually returning the focusing lens in-focus position 3 Or the imaging device of 4 .

The readout range and readout method of the image data are as follows:
A first method in which a reading range is a first region of the imaging device, and a reading method outputs image data from the image data of the first region at a first thinning rate ;
A second method of outputting image data from a second region of the imaging element whose readout range is a partial region of the first region at a second thinning rate higher than the first thinning rate. the imaging apparatus according to any one of claims 1 to 5, characterized in that.

The angle-of-view instruction means has means for instructing the direction and speed of changing the angle of view, and the mode setting means has the first setting when the speed of change of the angle of view is lower than a preset speed. processing mode to set the imaging apparatus according to set said second processing mode to any one of claims 1 to 6, wherein when fast.

Said mode setting means includes a mode setting member, according to claim 1, wherein setting the one of the second processing mode and said first processing mode in response to operation of the mode setting member The imaging device according to any one of the above.

The resolution of the image data generated by the second angle-of-view changing unit during the angle-of-view change according to the reading range and reading method of the image data and the angle of view specified by the angle-of-view indicating unit so it does not change, the imaging apparatus according to any one of claims 1 to 8, further comprising a parameter changing means for changing the parameters for the signal processing.

It further has a variable magnification optical system that changes the angle of view,
If angle of view specified by the field angle indicating means is greater than a preset angle, in any one of claims 1 to 9, characterized in that to change the angle of view by the zoom lens system and The imaging device described.

An image pickup device for picking up an image of a subject and outputting image data, and a control method for an image pickup apparatus having an electronic zoom function,
A mode setting step in which the mode setting means sets either the first processing mode or the second processing mode;
An angle- of-view instruction process in which the angle- of-view instruction means indicates the angle of view;
When the first processing mode is set in the mode setting step, the first angle-of-view changing unit is configured to store image data from the image sensor based on the angle of view instructed in the angle-of-view instruction step. The image pickup device is driven and controlled by switching the reading range and the reading method, and image data is read. The second angle-of-view changing unit processes the read image data to display the image specified in the angle-of-view instruction step. A first angle-of-view changing step for changing to a corner;
When the second processing mode is set in the mode setting step, the second angle-of- view changing unit does not change the reading range and the reading method of the image data when the angle of view is changed, A second angle-of-view changing step of processing the output image data and changing to the angle of view instructed in the angle-of-view instruction step ;
A display step of displaying the image data processed by the first or second angle-of-view changing step at a preset rate;
When the first processing mode is set, in the display step, the image data processed in the first view angle changing step is displayed every other frame, and in the first view angle changing step, A control method characterized by switching a reading range and a reading method of image data in a frame in which the image data is not displayed .