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Method and device for switching fixed focus and zoom modes and mobile terminal

A mobile terminal and mode technology, applied to color TV parts, TV system parts, TVs, etc., can solve the problems of small depth of field in long-distance photography, inability to capture all scenes clearly, and reduce Selfie speed, etc., to reduce loss Defocused Risk Effects

Active Publication Date: 2016-04-06
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Now, users like to use a selfie stick to take selfies, but when the front camera of a mobile terminal only has a fixed focus mode, the focal length of the photo is generally 25-50cm. When using a selfie stick to take pictures, due to the short focal length, the depth of field for long-distance photos is very small , the scene cannot be captured clearly
Therefore, when using a selfie stick to take a selfie, you need to use the front camera with auto focus mode, but when the user holds the mobile terminal to take a selfie, the front camera needs to focus to take a picture, which reduces the selfie speed and has the risk of being out of focus

Method used

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  • Method and device for switching fixed focus and zoom modes and mobile terminal
  • Method and device for switching fixed focus and zoom modes and mobile terminal
  • Method and device for switching fixed focus and zoom modes and mobile terminal

Examples

Experimental program
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Embodiment 1

[0025] figure 1 It is a schematic flowchart of a method for switching between fixed focus and zoom modes provided by Embodiment 1 of the present invention. The method is applicable to the case where the fixed focus and zoom modes of the camera are intelligently switched to realize self-portraits when the mobile terminal is connected or disconnected from the selfie stick, and the method can be executed by a switching device for the fixed focus and zoom modes. The device can be realized by software and / or hardware, and can be set in the mobile terminal. like figure 1 As shown, the method includes:

[0026] Step 101, when it is detected that the mobile terminal enters the camera mode, it is detected in real time whether the mobile terminal is connected to the selfie stick.

[0027] When it is detected that the camera of the mobile terminal is turned on, it is detected in real time whether the mobile terminal is connected to the selfie stick.

[0028] Among them, such as fig...

Embodiment 2

[0044] image 3 It is a schematic flow chart of the method for switching between fixed focus and zoom modes provided by Embodiment 2 of the present invention. In this embodiment, based on Embodiment 1, the step of starting the focusing unit in the camera module is further optimized as follows: controlling the power supply of the mobile terminal to supply power to the focusing unit; controlling the focusing unit to move within the preset focal length according to a preset focusing algorithm.

[0045] Further, control the focus unit to move and fix at the preset focal length, including:

[0046] Control the focus unit to move to the preset focal length;

[0047] Control the power supply of the mobile terminal to disconnect the power supply to the focusing unit.

[0048] Therefore, only need to supply power to the focus unit or cut off the power, can realize the switch between the fixed focus mode and the zoom mode, the method and structure are simple and easy to realize.

[0...

Embodiment 3

[0061] Figure 4 It is a schematic flowchart of a method for switching between fixed focus and zoom modes provided by Embodiment 3 of the present invention. The front camera in this embodiment adopts an auto-focus lens, such as Figure 4 As shown, the method of the present embodiment includes the following steps:

[0062] Step 301 , the initial position of the focus motor is fixed at a focal length of the 25cm-50cm focal length, and the front camera enters a fixed-focus mode.

[0063] For example, when the front-facing camera is turned on, the fixed-focus mode is activated, and the initial position of the focus motor can be fixed at a focal length of 40 cm, so that the user can take a clear photo when taking a selfie with the mobile terminal.

[0064] Step 302 , the mobile terminal detects whether there is a selfie stick connected to the mobile terminal; if yes, execute step 303 , otherwise execute step 304 .

[0065] Wherein, the selfie stick can be a plug-in type selfie s...

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Abstract

The invention discloses a method and a device for switching fixed focus and zoom modes and a mobile terminal. The method comprises the following steps: when detecting that the mobile terminal enters a shooting mode, detecting whether the mobile terminal is connected with a selfie stick in real time; when detecting that the mobile terminal is connected with the selfie stick, starting a zoom unit in a camera module to enter a zoom model; and when detecting that the mobile terminal is disconnected with the selfie stick, controlling the zoom unit to move and stay at a fixed preset focal length to enter the fixed focus mode. By adopting the method disclosed by the invention, when using the selfie stick or holding the mobile terminal on a hand for selfie, the fixed focus and zoom modes of a camera are intelligently switched, so that the shot pictures are clear.

Description

technical field [0001] The present invention relates to the technical field of mobile terminals, and relates to a method and device for switching between fixed focus and zoom modes, and a mobile terminal. Background technique [0002] With the development of the times and technology, mobile terminals are becoming more and more popular, and it has become a standard configuration of the mobile terminal to be provided with a camera. Moreover, the pixels of mobile terminal cameras are getting higher and higher, and the imaging effect of taking pictures is getting better and better, so many people are keen to use mobile terminals to take selfies. [0003] Now, users like to use a selfie stick to take selfies, but when the front camera of a mobile terminal only has a fixed focus mode, the focal length of the photo is generally 25-50cm. When using a selfie stick to take pictures, due to the short focal length, the depth of field for long-distance photos is very small , the scene c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04M1/725
CPCH04M1/72409H04M1/72484H04N23/67H04N23/667
Inventor 张学勇王逸英
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD