Autofocus method, device and projection equipment

A projection device and auto-focus technology, applied in the field of focusing, can solve the problems of affecting the audience's visual experience and long focusing time, and achieve the effect of improving the visual experience and shortening the focusing time

Active Publication Date: 2019-07-12
WHALEY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method needs to project a static fixed picture or text for special focus, and most of the focus time is too long, which seriously affects the visual experience of the audience

Method used

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  • Autofocus method, device and projection equipment
  • Autofocus method, device and projection equipment
  • Autofocus method, device and projection equipment

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0034] It should be noted that like numerals and let...

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Abstract

The invention provides an automatic focus method and device and a photographing device. The method is applied to a projection device. The projection device comprises a motor for focus. The method comprises the steps of driving the motor to rotate; sampling a video played by the projection device to obtain sample images, and processing the sample images to obtain the acutance of the sample images;and comparing the acutance of the adjacent sample images, adjusting a rotation direction of the motor according to an acutance change trend between the adjacent sample images, thereby realizing projection focus in a video playing process. In the video playing process, the projection focus can be realized without carrying out projection to obtain static specific focus images or characters, so the vision experience of the user is improved.

Description

technical field [0001] The present invention relates to the technical field of focusing, in particular to an automatic focusing method, device and projection equipment. Background technique [0002] The existing focusing technology is to take a fixed picture projected by the optical machine through the camera during the movement of the focusing lens before the video is played, and calculate the definition of the currently captured picture, so as to drive the motor to move the focusing lens for focusing. The above method needs to project a static fixed picture or text for special focus, and most of the focus time is too long, which seriously affects the visual experience of the audience. Contents of the invention [0003] In order to overcome the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an auto-focus method, device and projection equipment, which can project static dedicated focus pictures or te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/31
CPCH04N9/317
Inventor 陈健
Owner WHALEY TECH CO LTD
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