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Camera device, control method and storage medium thereof

A technique of imaging equipment and a control method, which is applied in the directions of image communication, TV, color TV components, etc., and can solve problems such as inability to perform focus detection

Active Publication Date: 2020-07-21
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the disclosure of Japanese Patent Laid-Open No. 2016-015695, focus detection cannot be performed if the main subject does not overlap the area where the signal used in focus detection is read

Method used

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  • Camera device, control method and storage medium thereof
  • Camera device, control method and storage medium thereof
  • Camera device, control method and storage medium thereof

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Embodiment Construction

[0029] [Structure of Camera 100]

[0030] A first exemplary embodiment of the present invention is described below. An imaging device is explained as an example of a focus detection device according to an exemplary embodiment of the present invention. In the first exemplary embodiment, an example in which the imaging apparatus is a video camera is explained. However, the imaging device is not limited to a video camera, and may be other imaging devices such as a digital still camera or the like. Optionally, the camera device may be a camera device with a mountable and detachable lens device.

[0031] figure 1 is a block diagram showing the configuration of the camera 100 as an example of the imaging apparatus according to the first exemplary embodiment.

[0032] The camera 100 includes a first fixed lens group 101 , a zoom lens 102 , a diaphragm 103 , a second fixed lens group 104 , and a focus lens 105 (focus compensation lens) as an imaging optical system. The zoom lens...

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Abstract

The invention relates to an imaging device, a control method thereof and a storage medium. The imaging apparatus includes an image sensor including a pair of photoelectric conversion units for each of a plurality of microlenses arranged in a matrix of rows and columns, and capable of reading signals from each row. The camera control unit regularly arranges a first area and a second area on the image sensor according to the size of the focus detection area, wherein the first area has a first predetermined number of lines for reading a signal for focus detection from the image sensor, And the second area has a second line number of lines from which no signal for focus detection is read.

Description

technical field [0001] The present invention relates to focus detection control of an imaging device, and also relates to a control method and a storage medium of the imaging device. Background technique [0002] A technique for performing phase difference focus detection on an imaging surface using a signal output from an image sensor is known. The disclosure of Japanese Patent Laid-Open No. 2016-015695 (the third exemplary embodiment therein) discusses an example of a technique for performing phase difference focus detection on an imaging plane. In this technique, a predetermined number of rows from which a signal used in focus detection is read and a predetermined number of rows from which a signal used in focus detection is not read but a signal used in imaging is mixed together in the column direction, And read these signals alternately. This limits the number of lines used in reading focus detection. Thus, the time required to read one frame from the image sensor ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232H04N5/225H04N25/42
CPCH04N23/54H04N23/672H04N23/55H04N25/704
Inventor 石井和宪
Owner CANON KK