PDAF calibration method and device based on MEMS mobility

A technology of distance calibration and lens movement, which is applied in the direction of focusing devices, color TV parts, TV system parts, etc. It can solve the problems of cumbersome operation, prone to jittering of terminal equipment, and affecting PDAF calibration, etc., so as to simplify the calibration operation Steps, reducing the impact of calibration results, and improving the effect of accuracy

Active Publication Date: 2016-12-07
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Problems solved by technology

However, the above calibration method is cumbersome to operate during the calibration process, requiring the user to manually move the terminal device multiple times to obtain multiple defocus values. Manually moving the terminal device, the terminal device is prone to jitter, which affects PDAF calibration.

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  • PDAF calibration method and device based on MEMS mobility
  • PDAF calibration method and device based on MEMS mobility
  • PDAF calibration method and device based on MEMS mobility

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Embodiment Construction

[0038]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 designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0039] The MEMS mobile based PDAF calibration method, device and mobile terminal according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0040] With the development of the mobile terminal, the hardware in the mobile terminal is also continuously upgraded, for example, a micro electromechanical system (Micro Electro Mechanical System, MEMS) is used in the mobile terminal. Specifically, MEMS can be applied in various modules, for example, in imaging modules. The i...

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Abstract

The invention discloses a PDAF calibration method and device based on MEMS mobility. The method comprises the following steps: determining N preset lens positions of a lens away from a calibration graph of a preset distance, wherein N is a positive integer; controlling the position deviation of an image sensor and the lens through a micro electromechanical system MEMS, so that the lens moves to the corresponding preset lens position, and respectively obtaining an off focus value of the lens on each preset lens position; and carrying out phase detection according to the N obtained off focus values to realize automatic focusing and calibration. According to the PDAF calibration method based on MEMS mobility provided by the embodiment of the invention, a user does not need to manually move a mobile terminal in a calibration process, so that the influence of jitter of the mobile terminal on the calibration result can be reduced, the calibration accuracy is improved, the calibration operation steps are simplified, the calibration of the PDAF is facilitated, the PDAF is calibrated accurately, and the image of a subsequently shot image can be improved.

Description

technical field [0001] The present invention relates to the technical field of mobile terminals, in particular to a PDAF calibration method and device based on MEMS movement. Background technique [0002] With the development of mobile communication technology, mobile terminals such as smartphones and tablet computers have increasingly become indispensable entertainment devices and communication tools in people's lives. Various additional functions of mobile terminals are also attracting more and more attention. For example, the shooting function increases user experience and fun. [0003] At present, the camera focusing method is generally an auto-focusing method, among which Phase Detection Auto Focus (PDAF) is a commonly used auto-focusing method. The image sensor includes multiple PDAF modules, but each PDAF module The performance is different and the consistency is not good. Therefore, in the process of PDAF verification by the module factory, it is found that the def...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232G03B13/36
CPCG03B13/36H04N23/67
Inventor 韦怡李小朋
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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