PDAF calibration method and device based on mems movement

A technology of distance calibration and lens movement, applied in focusing devices, components of color TVs, components of TV systems, etc., can solve problems such as affecting PDAF calibration, complicated operation, and easy jittering of terminal equipment, and reduce calibration results. effect, simplify the calibration operation steps, and facilitate the effect of calibration

Active Publication Date: 2017-08-25
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • PDAF calibration method and device based on mems movement
  • PDAF calibration method and device based on mems movement
  • PDAF calibration method and device based on mems movement

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method and device for PDAF calibration based on MEMS movement. The method includes: determining N preset lens positions of the lens at a preset distance from the calibration map, wherein N is a positive integer; controlled by a micro-electromechanical system MEMS The position of the image sensor and the lens deviates, so that the lens moves to the corresponding preset lens position, and the defocus value of the lens at each preset lens position is obtained respectively; phase detection is performed according to the obtained N defocus values Autofocus calibration. The PDAF calibration method based on MEMS movement provided by the embodiment of the present invention makes it unnecessary for the user to manually move the mobile terminal during the calibration process, thereby reducing the impact of the vibration of the mobile terminal on the calibration result, improving the accuracy of calibration, and simplifying the calibration operation. The steps facilitate the calibration of the PDAF, and the accurate calibration of the PDAF can improve the quality of subsequent photographed pictures.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232G03B13/36
CPCG03B13/36H04N23/67
Inventor 韦怡李小朋
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap