A focusing method, device and projection equipment

A technology of projection equipment and focusing method, which is applied in the field of focusing control, can solve problems such as long time consumption, poor user experience, and user dizziness, and achieve the effect of short focusing time

Active Publication Date: 2021-09-28
CHENGDU XGIMI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only does it take longer, but the changes in picture clarity caused by the motor moving back and forth and adjusting will also make users feel dizzy, resulting in poor user experience.

Method used

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  • A focusing method, device and projection equipment
  • A focusing method, device and projection equipment
  • A focusing method, device and projection equipment

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Embodiment Construction

[0042] In order to enable those skilled in the art to better understand the technical solution of the invention, the present application will be further described in detail below in conjunction with specific embodiments.

[0043] With the rapid development of electronic technology and computer technology, the application of projection equipment is more and more extensive. For projection equipment, its main purpose is to project clear images, so focusing is the key to projection equipment. In the past, the focus was adjusted manually, and whether to focus was determined subjectively by the human brain. However, with the development of modern technology, people's demand for projection is getting higher and higher, and the quality of focusing is getting higher and higher. Focusing technology is very important.

[0044] Please refer to figure 1 , figure 1 The basic principle diagram of the hill-climbing algorithm provided in the embodiment of the present application, the larger...

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Abstract

The present application provides a focusing method, device and projection equipment. The method is applied to a projection equipment including a motor, and the hysteresis step number A is pre-stored in the projection equipment, as well as the projection distance D of the projection equipment and the motor along the first step. The mapping relationship K=F(D) of the number of steps K when moving in one direction to the projection screen is clear. This method judges the size relationship between D1 and D2 by obtaining the projection distance D1 and the current projection distance D2 of the projection device at the previous moment. When D2 is greater than D1, increase the motor stroke of the motor by (F(D2)-F(D1)) steps, and when D2 is smaller than D1, reduce the motor stroke of the motor by (F(D1)-F(D2)-A) steps . This method has a short focusing time, and can avoid the problem that the projected picture changes back and forth between clear and blurred due to moving back and forth and adjusting the motor, thereby causing the user to feel dizzy.

Description

technical field [0001] The application belongs to the field of focusing control, and in particular relates to a focusing method, device and projection equipment. Background technique [0002] With the rapid development of electronic technology and computer technology, the application of projection equipment is more and more extensive. For projection equipment, its main purpose is to project clear images, so focusing is the key to projection equipment. In the past, the focus was adjusted manually, and whether to focus was determined subjectively by the human brain. However, with the development of modern technology, people's demand for projection is getting higher and higher, and the quality of focusing is getting higher and higher. Focusing technology is very important. [0003] In the prior art, a hill-climbing algorithm is usually used to achieve focusing. The mountain-climbing algorithm is used to focus. During the focusing process, the motor needs to move and adjust b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/31
CPCH04N9/317
Inventor 钟波肖适王鑫郭栋
Owner CHENGDU XGIMI TECH CO LTD
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