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A projection display equipment and its working state displaying and keystone distortion correcting method

A projection display and trapezoidal distortion technology, which is applied to color TV parts, TV system parts, TVs, etc., can solve the problems of different shapes and take a lot of time, and achieve accurate and rapid correction and accurate correction of trapezoidal distortion Effect

Inactive Publication Date: 2005-09-28
LEIJIN ELECTRONIC SHENYANG CO LTD
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Problems solved by technology

[0011] In order to correct this trapezoidal distortion, it is traditionally corrected by the user with the naked eye until the image becomes a right-angled quadrilateral; in this case, because there is no objective reference point, the shape of the image will vary with the individual; In addition, in the case of unskilled operation, there is a problem that it takes a lot of time

Method used

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  • A projection display equipment and its working state displaying and keystone distortion correcting method
  • A projection display equipment and its working state displaying and keystone distortion correcting method
  • A projection display equipment and its working state displaying and keystone distortion correcting method

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Embodiment Construction

[0040] Below, refer to Figure 5 ~ Figure 8 , to describe the examples of the present invention in more detail.

[0041] Figure 5 It is a structural block diagram of the LCD projector of the example of the present invention. For reference, follow the figure 1 The same and corresponding structural parts of the conventional LCD projector shown will be given the same or similar reference numerals, and descriptions will be omitted for structural parts with the same functions.

[0042]Depend on Figure 5 It can be seen that the projector 200 of the example of the present invention will be composed of the following parts, namely: a microcomputer 10' is provided to control the various components inside the projector; a receiver 12 for remote control signals is provided for Receive the on / off signal that is sent from the remote controller 13 that is positioned at the outside of projector; Be provided with AC power receiving part 24, be used for receiving the AC power that provide...

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Abstract

The present invention relates to an equipment cable of indicating working state of projection type image display equipment and correcting trapezoidal distortion produced on display screen and its method. Said invented projection type image display equipment has a microcomputer for controlling work of projection type image display equipment, and the front side of said projection type image display equipment is equipped with at least more than one laser beam generation component. Said invention also provides the concrete function and action of said microcomputer and said laser beam generation component, and also provides the correcting method trapezoidal distortion.

Description

technical field [0001] The present invention relates to a projection display device, and a method for displaying the working state of the device and correcting keystone distortion. In more detail, it will relate to a projection display device and its method that use laser beams to externally indicate the working state of the projection display device and correct trapezoidal distortion appearing on the screen. Background technique [0002] Recently, with the development of the information industry, there has been an increasing demand for image display devices for displaying large screens. Among such image display devices for displaying a large screen, there are many image display devices using a projection type, among which LCD projectors are particularly popular. This kind of LCD projector is not only used for displaying presentation materials at exchange conferences, but also gradually popularized and applied to display devices of digital televisions for home use. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/74
Inventor 李庠昊
Owner LEIJIN ELECTRONIC SHENYANG CO LTD
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