Publication detail

Modelling the focus error characteristic of a DVD player

HNILIČKA, B., BESANCON-VODA, A., SCHROEDER, H., FILARDI, G.

Original Title

Modelling the focus error characteristic of a DVD player

Type

conference paper

Language

English

Original Abstract

This paper presents a new approach to focus error modelling in a DVD player, applied to an industrial system, developed in STMicroelectronics laboratories. First, two mathematical models, based on astigmatic method and on opto-geometrical analysis, are given. A numerical model is given too. Then a curve fitting method is applied, using real data from the industrial system, in order to estimate the unknown parameters of these models. They will be further included in the focus error control loop in order to improve the performance analysis.

Keywords

DVD player, optical disc, astigmatism, focus error signal, cylindrical lens, light intensity distribution, photodetector.

Authors

HNILIČKA, B., BESANCON-VODA, A., SCHROEDER, H., FILARDI, G.

RIV year

2002

Released

18. 9. 2002

Publisher

IEEE

Location

Glasgow, U.K.

ISBN

0-7803-7386-3

Book

Proceedings of the 2002 IEEE International Conference on Control Applications

Pages from

629

Pages to

630

Pages count

2

BibTex

@inproceedings{BUT5451,
  author="Bohumil {Hnilička} and Alina {Besancon-Voda} and Heinz-Joerg {Schroeder} and Giampaolo {Filardi}",
  title="Modelling the focus error characteristic of a DVD player",
  booktitle="Proceedings of the 2002 IEEE International Conference on Control Applications",
  year="2002",
  pages="2",
  publisher="IEEE",
  address="Glasgow, U.K.",
  isbn="0-7803-7386-3"
}