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Apparatus and method for adjusting convergence of projection television

A projection TV and convergence technology, which is applied in the direction of using the image reproducer of the projection device, the parts of the color TV, the parts of the TV system, etc., can solve the problems such as the inability to solve the predetermined time period, inconvenience, small distortion, etc.

Inactive Publication Date: 2005-04-13
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0023] refer to figure 2 , a little convergence adjustment changes the static value, that is, this method just moves all the points on the screen in the same direction, so the problem is that it cannot solve small distortions for a predetermined period of time
[0024] further, such as figure 2 As shown, in the case of nine-point convergence adjustment, the user has to adjust the convergence relative to nine points, which is very inconvenient

Method used

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  • Apparatus and method for adjusting convergence of projection television
  • Apparatus and method for adjusting convergence of projection television
  • Apparatus and method for adjusting convergence of projection television

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Embodiment Construction

[0039] Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0040] image 3 is a block diagram of an apparatus for adjusting projection television convergence according to an embodiment of the present invention, Figure 4 The convergence adjustment screen of the projection television of the present invention is shown, Figure 5 It is a flowchart showing a method for adjusting convergence of a projection TV according to another embodiment of the present invention.

[0041] refer to image 3, the device for adjusting the convergence of the projection TV includes: a storage part 100, storing "reference adjustment data" for convergence adjustment; a display part 700, displaying an adjustment screen for convergence adjustment; a microcomputer 200, when the user inputs During the convergence adjustment instruction, the static convergence adjustment and the dynamic convergence adjustme...

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Abstract

Apparatus and methods for adjusting convergence of a projection television are provided. When adjusting the convergence of the projection television, the static convergence adjustment and the dynamic convergence adjustment are sequentially performed on the same adjustment screen, thereby performing efficient convergence adjustment.

Description

technical field [0001] The present invention relates to image display devices, and more particularly to apparatus and methods for adjusting the convergence of projection televisions. Background technique [0002] Generally, a CRT-type projection television (TV) basically uses three types of CRTs (R, G, B) to display images on a large screen. [0003] In order to optimize the picture display quality of the projection TV, it is very important to match the three colors of red (R), green (G) and blue (B) synchronously with the three CRTs. [0004] Sensitivity of projection TV includes many items such as white uniformity (W / U), brightness uniformity (B / U), convergence, focus, distortion and so on. [0005] Here, convergence means that the R, G, B electron beams emitted from the electron gun are focused on one point on the screen by the magnetic field of the deflection yoke. If the electron beam is not well deflected due to a malfunction of the deflection yoke or the influence o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/74H04N9/28
CPCH04N9/28H04N9/31H04N5/74
Inventor 申京雨李美瑛
Owner LG ELECTRONICS INC