Automatic self-balance regulating technique and related display unit

Automatic self-balance regulating technique and related display unit

  • CN 100,477,806 C
  • Filed: 12/07/2001
  • Issued: 04/08/2009
  • Est. Priority Date: 12/07/2001
  • Status: Active Grant
First Claim
Patent Images

1. automatic self-balance regulating method, physical circuit by photoelectric sensor, adaptive and D/A switch circuit part, numeric ratio and data processing circuit part and input/output interface circuit partly form, its basic functional principle is;

  • Projection ray machine projection ray machine after display unit is inserted test signal sends red, blue, green test pattern projected light, this projection light intensity be placed in photoelectric sensor in the unit receive and be converted into the signal of telecommunication again after adaptive and mould/number conversion circuit carries out the A/D conversion again numeric ratio and carry out in the data processing circuit and predetermined value relatively and output adjust instruction, remove to control the response curve that executive circuit is adjusted the three primary colors light output of projection ray machine, constantly repeat said process, reach in the limit of permission until the error of measuring numerical value and predetermined value, its feature just is;

    adopted the relativity calibrating mode to carry out the calibration of system in present technique;

    Adopted the white balance processing mode of color separation;

    Adopted predetermined value to regulate and control the cut-off point and the response curve of red, blue, green projected image grating as target data;

    Adopt the differential data processing mode to eliminate the influence of bias light to regulation and control and system calibration.

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