Focusing method and system of projection TV

A technology of projection TV and projector, applied in the field of TV, can solve the problem of unable to realize automatic focusing screen and other problems

Active Publication Date: 2017-01-04
深圳市TCL高新技术开发有限公司
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  • Abstract
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Problems solved by technology

[0005] In view of the deficiencies of the prior art above, the purpose of the present invention is to provide a method and system for focusing a projection TV, aiming at solving the problem that the existing projection TV cannot automatically focus after the distance between its body and the screen changes. The problem of making the screen always present a high-definition TV picture

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  • Focusing method and system of projection TV
  • Focusing method and system of projection TV
  • Focusing method and system of projection TV

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Embodiment Construction

[0031] The present invention provides a method and system for focusing a projection television. In order to make the object, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] see figure 1 , figure 1 It is a flow chart of a preferred embodiment of a method for focusing a projection TV according to the present invention, as shown in the figure, which includes steps:

[0033] S100. Drive the motor to move the projector lens to travel position 0, MAX_L / 2 and MAX_L respectively, and take and save the screen image at each travel position through the camera, and the MAX_L is the maximum travel of the projector lens distance;

[0034] S200. Calculate respectively the sharpness values ​​of the screen picture images captured when the p...

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Abstract

The invention discloses a focusing method and system of a projection TV. The method comprises the following steps: gradually pushing a motor to adjust a lens position of a projector by use of the dichotomy until the back-and-forth distance of the projector lens MAX_L / (2n) is less than or equal to the minimum movement step length MIN_STEP, regarding that the focusing is successful, namely, the definition of a curtain picture image reaches the best at present. Through the adoption of the method disclosed by the invention, the focusing effect of the projection TV can be fast and automatically adjusted, the curtain always presents a high-definition TV picture, and the convenience is provided for a user using the projection TV.

Description

technical field [0001] The invention relates to the field of televisions, in particular to a focusing method and system for projection televisions. Background technique [0002] With the improvement of living standards, people have more and more demands for large-screen TVs. Since projection TVs can achieve a larger screen size than LCD TVs, they have gradually become a home entertainment center. [0003] However, since the screen (curtain) and the body of the projection TV are separated, the body of the projection TV may be moved in daily use, causing the distance between the body of the projection TV and the screen to change, making the projected TV The image will become blurred. Therefore, how to adapt to this distance change, automatically adjust the focusing effect of the projection TV, and make the screen always present a high-definition TV picture is an urgent problem to be solved. [0004] Therefore, the prior art still needs to be improved and developed. Content...

Claims

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Application Information

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IPC IPC(8): H04N9/31
CPCH04N9/3185
Inventor 王丛华
Owner 深圳市TCL高新技术开发有限公司
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