Adaptive fuzzy logic for focusing in optical disk player

Yong C. Choi, Chang Hun Kim

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


For the nonlinear behaviors of the actuator and servo system of the optical disk player, a fuzzy control is introduced. Focus servo controls the laser beam to focus on the playing surface of the disc by vertical movement of the objective lens. The change of the distance between the objective lens and the disc must be within the allowable focus error to stay in focus. This must be maintained even with a slightly warped or uneven disc and in a portable player. This paper will observe on how the focusing is controlled in an optical disk player and will evaluate algorithm based on the model using Adaptive Fuzzy Logic.

Original languageEnglish
Pages (from-to)545-550
Number of pages6
JournalIEEE Transactions on Consumer Electronics
Issue number2
Publication statusPublished - 2008 May


  • Focusing in Optical Disk Player
  • Focusing using Adaptive Fuzzy Logic
  • Fuzzy Logic for ODP

ASJC Scopus subject areas

  • Media Technology
  • Electrical and Electronic Engineering


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