한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
권호 표지

Method and Apparatus for Digital Auto Convergence of Projection Video Display

  • Tai, Wen-Chih (Central Research Institute, Chunghwa Picture Tubes, Ltd.) ;
  • Mo, Chi-Neng (Central Research Institute, Chunghwa Picture Tubes, Ltd.) ;
  • Juan, Chang-Jung (Electronic Engineering, Hwa-Hsia Institute of Technology) ;
  • Tsai, Ming-Jong (Institute of Automation and Control, National Taiwan University of Science and Technology)
  • Published : 2005.07.19
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Abstract

This thesis provides a new digital convergence method and apparatus which uses area photo sensor and new analog to digital algorithmic to identify the correct digital pattern position factor of the projection system. This method and apparatus can be applied to the convergence correction in a TV receiver with a display that comprises a display screen with photo sensors positioned adjacent to screen edges. It also can be applied to the manufacture process detection of the projection system to adjust the associative convergence parameter. In this paper, demonstrate how this convergence detecting algorithmic was implemented with four area photo sensors of special designed pattern to the rear projection CRT TV.

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