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Method and device for controlling camera rotation

A camera and control module technology, applied in the field of control, can solve problems such as uncertainty, waste of power resources, loss of motor mechanical performance, etc.

Active Publication Date: 2017-02-15
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing method of controlling the rotation of the camera through an electric motor has many disadvantages
For example, the initial angle of the camera is not known before the rotation, so that it is impossible to determine how much the angle should be rotated to make the camera reach the front, rear or other arbitrary angle positions
In order to accurately reach the position of the front, rear or other arbitrary angles, the existing method usually uses the largest angle of rotation to achieve, thus ensuring that the camera can reach the position of the front, rear or other arbitrary angles. However, this This method is prone to the problem that the camera has been rotated to the end, but the electric motor is still rotating, causing the problem of motor idling, wasting power resources and deteriorating the mechanical properties of the motor

Method used

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  • Method and device for controlling camera rotation
  • Method and device for controlling camera rotation
  • Method and device for controlling camera rotation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] figure 1 A first implementation flow of the method for controlling the rotation of a camera provided by Embodiment 1 of the present invention is shown; for the convenience of description, only the parts related to the present invention are shown.

[0062] In this embodiment, the method is applied to user equipment with a rotatable camera, including but not limited to mobile terminals such as mobile phones, tablet computers, and iPads. Wherein, in the rotatable camera, the camera is arranged on a rotatable device, and the rotatable device is located on the side of the mobile terminal; a magnet is arranged on the rotatable device, and the magnet deviates from the rotatable device The digital hall sensor is arranged on the main body of the mobile terminal, and is arranged opposite to the magnet, and is used to sense the change of the magnetic field caused by the rotation of the magnet with the rotatable device, so as to determine the current offset angle of the camera. f...

Embodiment 2

[0079] Figure 4 The specific implementation process of step S102 in the method for controlling the rotation of the camera provided in the second embodiment of the present invention is shown. For the convenience of description, only the parts related to the present invention are shown.

[0080] like Figure 4 As shown, step S102 includes:

[0081] In step S401, when the absolute value of the initial output value of the digital Hall sensor is less than or equal to a preset value, the camera is controlled to rotate in a direction of increasing angle at a preset rotational angular speed.

[0082] Preferably, the preset value is preferably 10. Therefore, when the absolute value of the initial output value of the digital Hall sensor is less than 10, the image 3 It can be known that the offset angle of the camera cannot be accurately obtained according to the output value of the digital Hall sensor, and at this time, the camera is controlled to rotate in the direction of increasi...

Embodiment 3

[0095] Figure 5 The specific implementation process of step S103 in the method for controlling the rotation of a camera provided in Embodiment 3 of the present invention is shown; for the convenience of description, only the parts related to the present application are shown.

[0096] like Figure 5 As shown, step S103 includes:

[0097] In step S501, when the absolute value of the initial output value of the digital Hall sensor is greater than the preset value, the camera is controlled to rotate by the preset angle in the direction of increasing the angle.

[0098] Preferably, the preset value is preferably 10. Therefore, when the absolute value of the initial output value of the digital Hall sensor is greater than 10, the image 3 It can be known that the offset angle of the camera can be accurately obtained according to the output value of the digital Hall sensor. At this time, the camera is controlled to rotate by a preset angle in the direction of increasing angle at a...

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Abstract

The invention is suitable for the technical field of control, and particularly provides a method and a device for controlling rotation of a camera. The method includes collecting an initial output value of a digital Hall sensor; when an absolute value of the initial output value is smaller than or equal to a preset value, controlling the camera to rotate to an angle specified by a user in a first preset mode; when the absolute value of the initial output value is larger than the preset value, controlling the camera to rotate to the angle specified by the user in a second preset mode. By the method, the camera is enabled to accurately rotate to the angle specified by the user by pre-acquiring position of the camera through the digital Hall sensor before the camera rotates and then adopting different control modes to control the camera to rotate according to the position, so that the problem that existing technology for controlling the camera to rotate is prone to causing idle rotating of an electric motor is solved, power resources are saved, and service life of the electric motor is prolonged.

Description

technical field [0001] The invention belongs to the technical field of control, and in particular relates to a method and device for controlling the rotation of a camera. Background technique [0002] There are two ways to realize the rotatable camera currently on the market. One is manual rotation. There is no motor on this type of rotatable camera, and the angle of rotation cannot be controlled; the other is automatic rotation. This type of rotatable camera has a built-in electric motor, which can be controlled by controlling the rotation of the electric motor through a control chip. The angle by which the camera is rotated. [0003] However, the existing method of controlling the rotation of the camera by an electric motor has many disadvantages. For example, the initial angle of the camera is not known before the rotation, so that it is impossible to determine how much the angle should be rotated to make the camera reach the front, rear or other arbitrary angle positio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D3/12H04N5/232
Inventor 张强王健
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD