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Lens rotation control method and device

A technology of a control device and a control method, which is applied in the field of photography, can solve the problems of inaccurate zoom, out of step, and defocused images, and achieves the effect of wide application prospects.

Active Publication Date: 2020-02-28
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual situations, the lens may not complete the rotation of the set number of steps, that is, out-of-step phenomenon occurs, and then the image will appear out of focus and inaccurate zooming

Method used

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  • Lens rotation control method and device
  • Lens rotation control method and device
  • Lens rotation control method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0133] Embodiment 1: Take the preset number of steps set by the user as 500, the control device determines 10 driver programs, and the prescribed number of steps in each driver program is 50 as an example, combined with image 3 Flowchart of the method shown. The preset value of the counter in the control device is set to 10, and the preset value is used to represent the determined number of drivers.

[0134] S301, normally start the control device, the driving device and the lens;

[0135] S302. Initialize the lens, so that the lens returns to a default position;

[0136] S303. The user sets the preset number of steps to be rotated by the lens on the web interface;

[0137] S304. The control device acquires the preset number of steps, and determines ten driver programs according to the acquired preset number of steps;

[0138] S305. The control device sends a first control signal and a first instruction carrying any driver program to the drive device;

[0139] S306. The d...

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Abstract

The invention discloses a lens rotation control method and device. The control device determines a plurality of driving programs according to a preset step number of rotation of the lens; the controldevice sends a first instruction carrying a driving program to the driving device; the driving device controls the lens to complete rotation of a specified step number according to the driving program; and the driving device feeds back an interrupt signal to the control device, and the control device continues to send a first instruction carrying the driving program which is not sent to the driving device when judging that the driving program which is not sent exists, so that the driving device controls the lens to rotate for a specified step number again according to the driving program. Thus, since the lens is driven multiple times to complete the preset step number, the out-of-step problem occurring when the lens is only driven once to complete the preset step number needing to be rotated is avoided, the rotation of the lens is more accurate, the accuracy of lens rotation control is improved, and the out-of-step phenomenon of the lens is effectively prevented.

Description

technical field [0001] The invention relates to the field of imaging, in particular to a method and device for controlling lens rotation. Background technique [0002] In the related art, a motor driver (Motor Driver) is connected between the lens and the control device, and the control device (System on Chip, SoC) can send instructions to the motor driver, so that the motor driver controls the lens to rotate. However, in actual situations, the lens may not complete the rotation of the set number of steps, that is, the phenomenon of out-of-step occurs, and then the phenomenon of image virtual focus and inaccurate zooming will appear. [0003] Based on this, how to accurately control the rotation of the lens is a technical problem to be solved urgently by those skilled in the art. Contents of the invention [0004] Embodiments of the present invention provide a lens rotation control method and device for accurately controlling the lens rotation. [0005] In a first aspect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232
CPCH04N23/66
Inventor 林艳华
Owner ZHEJIANG DAHUA TECH CO LTD
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