Track jump control system for optical disk apparatus

Details Track jump control system for optical disk apparatus Track jump control system for optical disk apparatus

1987-03-25

1989-04-04

Shoop, Jr., William M.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 33, 369 43, 369 44, G11B 1722

Patent

active

048192198

ABSTRACT:
To accurately achieve plural-track jump operations at high speed in an optical disk apparatus, a first embodiment is provided in which an analog track jump signal is applied to move an optical beam. The analog track jump signal includes a kick pulse for acceleration, a constant pulse for constant drive, and a stop pulse for deceleration. In a second embodiment, a digital track jump signal is applied to move an optical beam. An erroneous track jump detecting circuit is additionally provided for detecting whether the optical beam correctly jumps over a designated number of tracks by comparing a number of plural track jump signals corresponding to the designated number of tracks to be jumped with the number of track signals generated when the beam jumps across a track.

REFERENCES:
patent: 4567534 (1986-01-01), Groen et al.
patent: 4701898 (1987-10-01), Giddings

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