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Digital convergent correcting method for display device

A display and parameter technology, applied in the field of convergence correction, can solve problems such as being susceptible to external environment interference, reducing convergence correction accuracy, and affecting light sensor signals, etc.

Inactive Publication Date: 2008-08-27
CHUNGHWA PICTURE TUBES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the convergence correction method of the prior art, the horizontal projection pattern PH and the vertical projection pattern PV are easily disturbed by the external environment when passing through the optical sensor, which affects the signal of the optical sensor and reduces the accuracy of convergence correction.

Method used

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  • Digital convergent correcting method for display device
  • Digital convergent correcting method for display device
  • Digital convergent correcting method for display device

Examples

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Embodiment Construction

[0034] The invention generates a projection pattern whose width is equivalent to that of the light sensor, and gradually expands the area of ​​the projection pattern from one side of the light sensor until the projection pattern completely covers the light sensor. Please refer to FIG. 6, which illustrates the process of generating the projected pattern in the present invention. If the photosensor T is located on the upper or lower side of the screen, P1 represents the projected pattern originally generated on the left side of the photosensor T, Q1 represents the projected pattern originally generated on the right side of the photosensor T, and P2-Ps represents the projected pattern P1 generated by The projected pattern when the left side of the photosensor T expands to a plurality of predetermined points A2-As, Q1-Qs represents the projected pattern when the projected pattern Q1 expands from the right side of the photosensor T to a plurality of predetermined fixed points As-A2....

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Abstract

A digitalization gathering calibration method used on display includes generating projected pattern with width as that of optical transducer and enlarging area of projected pattern step by step from one side of optical transducer gradually till optical transducer is completely covered by projected pattern, measuring signal continuously by optical transducer in course of enlarging area of projected pattern, carrying out digital judgment to derive out parameter of each gathering according to maximum value of optical energy measured by optical transducer.

Description

technical field [0001] The present invention provides a convergence correction method, especially a digital convergence correction method. Background technique [0002] In recent years, with the increase of user demand, the decrease of manufacturing cost, the continuous innovation of technology and the emergence of new products, the popularity rate of flat-panel display products has continued to rise. As the obstacles to large-scale flat-panel display products have been gradually overcome by advanced technology, large-size The positioning of graphic products has gradually changed from expensive professional equipment in the past to today's popular audio-visual products, and has developed uses such as home theaters. The projection technology applied to flat-panel display products is to provide a larger size and more shocking visual experience, and the application of various projection technologies has also extended from the front projection display market to the rear projecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/74H04N9/31
Inventor 戴文智何明宗刘家麟莫启能
Owner CHUNGHWA PICTURE TUBES LTD