On-track detecting circuit for use in tracking servo apparatus

Details On-track detecting circuit for use in tracking servo apparatus On-track detecting circuit for use in tracking servo apparatus

1995-10-06

1996-12-24

Hindi, Nabil

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4434, 369 32, G11B 700

Patent

active

055879861

ABSTRACT:
An on-track detecting apparatus which can accurately detect an on-track state of a disk even in a high speed search in an optical disk apparatus for recording or reproducing data to/from an optical disk having byte patterns of a sample servo. In an on-track detecting circuit in a tracking servo apparatus, a comparator for comparing a mean value of wobble pit signals and a clock pit signal is provided and an on-track signal is generated on the basis of a comparison result of the comparator.

REFERENCES:
patent: 5197058 (1993-03-01), Bell, Jr. et al.
patent: 5504727 (1996-04-01), Waehi
patent: 5513161 (1996-04-01), Hosimai et al.

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