Control method, control device and electronic device
A control method and technology of a control device, which are applied in focusing devices, televisions, electrical components, etc., can solve the problems of unstable output and reduced accuracy, and achieve the effect of increasing stability and accuracy.
Active Publication Date: 2018-02-27
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Problems solved by technology
[0002] Phase focusing can push the focusing lens to focus when the phase difference is large, so the focusing is faster. However, because of this, the output is unstable and the accuracy is reduced, especially when the image sensor has fewer phase detection pixels. in the case of
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[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.
[0023] The embodiments described below by referring to the drawings are exemplary, are only for explaining the embodiments of the present invention, and should not be construed as limiting the embodiments of the present invention.
[0024] see figure 1 , the control method according to the embodiment of the present invention is used to control the focus of the imaging device. The imaging device includes a focus motor, a focus lens and an image sensor. Wherein, the focus motor is used to drive the focus lens to move to achieve focus. The image sensor includes phase detection pixels.
[0025] The control method includes the following steps:
[0026] S10: controlling the focus motor to wait for a predetermined time...
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The invention discloses a control method for controlling the focus of an imaging device. The imaging device includes a focus motor, a focus lens and an image sensor. The focus motor is used to drive the focus lens to move the focus. The image sensor includes phase detection pixels. The control method includes: controlling the focus motor to wait for a predetermined time according to the phase difference between the left and right waveforms output by the phase detection pixels; controlling the focus motor to drive the focus lens to move to the focus position at the first step distance after a predetermined time according to the phase difference between the left and right waveforms and repeating the above steps until the focusing lens reaches the target position. In addition, the invention also discloses a control device and an electronic device. The control method, control device and electronic device of the embodiment of the present invention determine the focus position of the focus lens by detecting the phase difference between the left and right waveforms output by the phase detection pixels, and determine the waiting time for the focus motor before pushing the focus lens again, which increases the phase focus The stability and accuracy of the mode during focusing.
Description
technical field [0001] The invention relates to imaging technology, in particular to a control method, a control device and an electronic device. Background technique [0002] Phase focusing can push the focusing lens to focus when the phase difference is large, so the focusing is faster. However, because of this, the output is unstable and the accuracy is reduced, especially when the image sensor has fewer phase detection pixels. in the case of. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention needs to provide a control method, a control device and an electronic device. [0004] The control method in the embodiment of the present invention is used to control the focus of the imaging device. The imaging device includes a focus motor, a focus lens, and an image sensor. The focus motor is used to drive the focus lens to move to achieve the focus. The ima...
Claims
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IPC IPC(8): G03B13/36H04N5/232
CPCG03B13/36H04N23/67
Inventor 李小朋
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD