Edge position data reproduction apparatus

Details Edge position data reproduction apparatus Edge position data reproduction apparatus

1997-03-27

1998-04-28

Hindi, Nabil

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

369124, 369 48, G11B 700

Patent

active

057454647

ABSTRACT:
A data reproduction apparatus for reproducing data corresponding to front and rear edges of marks is recorded in an optical disk. The apparatus includes an optical head for obtaining a reproduction waveform from the optical disk, an A/D converter for obtaining a real sampling value from the reproduction waveform so as to detect an ascending edge (or a descending edge), an interpolator for obtaining a descending edge (or ascending edge) calculate sampling value through interpolation using the real sampling value, and a maximum likelihood detector for detecting a maximum likelihood signal on the basis of a real sampling value and the interpolated sampling value.

REFERENCES:
patent: 5420893 (1995-05-01), Ward
patent: 5450389 (1995-09-01), Hayashi
patent: 5490127 (1996-02-01), Ohta et al.
patent: 5523991 (1996-06-01), Mizokami et al.
patent: 5566158 (1996-10-01), Kobayashi et al.

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