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Calibration of an Optical Pick-up Performance Evaluator

광 픽업 성능 평가기 캘리브레이션

  • Ryoo, Jung Rae (Department of Electrical and Information Engineering, Seoul National University of Science and Technology) ;
  • Doh, Tae-Yong (Department of Electronics and Control Engineering, Hanbat National University)
  • 류정래 (서울과학기술대학교 전기정보공학과) ;
  • 도태용 (한밭대학교 전자.제어공학과)
  • Received : 2014.01.10
  • Accepted : 2014.01.28
  • Published : 2014.05.01

Abstract

Optical pick-up is a core component for data read/write operations in optical disc drives, and an optical pick-up performance evaluator is an instrument used to analyze the overall performance of an optical pick-up. Due to inevitable errors in an analog measurement circuit, resultant evaluation data is not guaranteed to be accurate. In this paper, a calibration method for an optical pick-up performance evaluator is proposed to ensure evaluation accuracy. Measured data is corrected by a 1st order correction function, and a calibration process based on least-square method is utilized to obtain correction coefficients of the correction function. The proposed calibration method is applied to experiments, and enhanced accuracy is presented with resultant evaluation data.

Keywords

References

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