Projection system with keystone correction function and keystone correction method thereof

A trapezoidal correction and projection system technology, which is applied to TV system components, color TV components, TVs, etc., can solve problems such as unsatisfactory users, achieve shortened calibration time, precise calibration scale, and optimized calibration effect Effect

Active Publication Date: 2014-07-30
QISDA OPTRONICS (SUZHOU) CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing projectors on the market all have the function of keystone correction, but the most precise scale of keystone correction is about ±1 degree, and there is st

Method used

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  • Projection system with keystone correction function and keystone correction method thereof
  • Projection system with keystone correction function and keystone correction method thereof
  • Projection system with keystone correction function and keystone correction method thereof

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[0026] Please refer to figure 1 , Figure 2A and Figure 2B , figure 1 Is a schematic diagram of the projection system of the present invention, Figure 2A Is a schematic diagram of the first picture shape of the present invention, Figure 2B It is a schematic diagram of the second picture shape of the present invention. The projection system with keystone correction function of the present invention includes a projection device 100, an adjustment element 200, and a control unit 300. Wherein, the projection device 100 is used to project an image and form a first image shape 410 on the target projection surface 400; the adjustment element 200 is used to adjust the first image shape 410 to a second image shape 420, and the adjustment element 200 is in the initial state The interval between the corresponding two consecutive values ​​is the first unit angle; the control unit 300 is used to detect the adjustment step applied to the adjustment element 200 to determine whether to chang...

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Abstract

The invention relates to a projection system with a keystone correction function and a keystone correction method thereof. The keystone correction method includes the steps that a projector projects an image, and a first picture shape is formed in a target projection face; an adjusting element is triggered, so that the first picture shape is adjusted into a second picture shape, and the interval between two continuous values corresponding to the adjusting element under the initial state is a first unit angle; the adjusting step is detected, and whether the interval between the two continuous values corresponding to the adjusting element is changed or not is determined. According to the projection system with the keystone correction function and the keystone correction method thereof, due to the fact that the adjusting step is detected by a control unit, and the interval between the two continuous values corresponding to the adjusting element is flexibly increased or reduced according to the adjusting step, more accurate corrected scales can be obtained without changing an existing hard framework of the projection system, the correction time is shortened, the correction precision is improved, and the correction effect is optimized.

Description

technical field [0001] The invention relates to a projection system with trapezoidal correction function and its trapezoidal correction method, in particular to a projection system with automatic switching unit angle and its trapezoidal correction method. Background technique [0002] Projectors have the advantages of large screen and small size, and the brightness and resolution of projectors have been greatly improved in recent years, making projectors more and more popular in office presentations and home theaters. The existing projectors on the market all have the function of keystone correction, but the most precise scale of keystone correction is about ±1 degree, and there is still a step difference between each degree. If the angle required by the user is within 1 degree Between, the adjustment value of ±1 degree cannot meet the needs of users. Contents of the invention [0003] The purpose of the present invention is to have a more precise calibration scale withou...

Claims

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Application Information

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IPC IPC(8): H04N5/74G03B21/00G03B21/14
Inventor 陶彦儒卓之威
Owner QISDA OPTRONICS (SUZHOU) CO LTD
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