Image pickup apparatus and focus detection method
US-9048152-B2 · Jun 2, 2015 · US
Imaging apparatus and method where an output of data indicating a result of a correlation calculation is intermittently performed
US9307136B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9307136-B2 |
| Application number | US-201414211571-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 14, 2014 |
| Priority date | Mar 19, 2013 |
| Publication date | Apr 5, 2016 |
| Grant date | Apr 5, 2016 |
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Abstract
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An imaging apparatus includes an imaging element for outputting focus detecting signals. A DFE performs phase difference detection-type focus detecting calculation using an output signal of the imaging element. A CPU controls a focus drive circuit depending on the result of calculation and a focus lens is driven so as to perform a focus adjusting operation. The CPU controls the DFE to intermittently execute focus detecting calculation at a predetermined frequency set for a plurality of image frames. In the first mode, AF processing is executed at a rate of once in a few frames and the operation of a circuit unit for performing correlation calculation or the like is stopped in a frame period during which no focus detecting calculation is performed, whereas in the second mode, AF processing is executed for each frame so as to perform a focus adjusting operation following the movement of an object.
First claim
Opening claim text (preview).
What is claimed is: 1. An imaging apparatus comprising: an imaging element that includes pixel portions each having a plurality of photoelectric conversion units; a drive unit configured to drive a focus adjusting lens; a first processing unit configured to acquire a signal output by the imaging element and to output a first image signal for a focus detection and a second image signal for the focus detection and an image generation; a second processing unit configured to acq…
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Electricity · mapped topic
- H04N23/672Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- H04N5/23212Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9307136B2 cover?
- An imaging apparatus includes an imaging element for outputting focus detecting signals. A DFE performs phase difference detection-type focus detecting calculation using an output signal of the imaging element. A CPU controls a focus drive circuit depending on the result of calculation and a focus lens is driven so as to perform a focus adjusting operation. The CPU controls the DFE to intermitt…
- Who is the assignee on this patent?
- Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification H04N23/672. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 05 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).