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Applied Optics

Applied Optics


  • Vol. 39, Iss. 32 — Nov. 10, 2000
  • pp: 6019–6027

Signal processing and a groove baseband recording method to achieve a high-density optical disc

Seiji Kobayashi, Toshihiro Horigome, and Hisayuki Yamatsu  »View Author Affiliations

Applied Optics, Vol. 39, Issue 32, pp. 6019-6027 (2000)

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We propose a method for recording a multilevel signal onto optical read-only-memory discs. In this method we use signal processing to generate a multilevel recording signal that satisfies the zero-intersymbol interference condition and the zero-dc condition. The resultant multilevel signal is emboss recorded as the position displacement of groove walls. To play back a disc, push–pull detection and an adaptive equalizer are used. We also introduce feedback to reduce the nonlinear characteristics existing in the recording and playback systems. An experimental disc with 0.6-µm track pitch and 0.28-µm/bit density is made. When a digital versatile disc equivalent optical pickup is used to play back this disc, we confirm that a two-dimensional eye pattern of 16 levels is clearly observed.

© 2000 Optical Society of America

OCIS Codes
(210.0210) Optical data storage : Optical data storage
(210.4590) Optical data storage : Optical disks
(210.4680) Optical data storage : Optical memories

Original Manuscript: April 5, 2000
Revised Manuscript: August 8, 2000
Published: November 10, 2000

Seiji Kobayashi, Toshihiro Horigome, and Hisayuki Yamatsu, "Signal processing and a groove baseband recording method to achieve a high-density optical disc," Appl. Opt. 39, 6019-6027 (2000)

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