Methods and apparatus for simultaneously reading multiple tracks

Details Methods and apparatus for simultaneously reading multiple tracks Methods and apparatus for simultaneously reading multiple tracks

1997-02-20

1999-05-25

Huber, Paul W.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 60, G11B 1722, G11B 576

Patent

active

059075260

ABSTRACT:
Methods and apparatus are provided for synchronously reading data from multiple tracks of an optical disk using multiple illumination beams. Circuitry is provided for use with a photodetector array to read and buffer data in parallel from the multiple adjacent tracks, while asynchronously providing processed data to a host processor. Circuitry is further provided for correcting phase errors resulting from variations in the linear velocity of the tracks being read, depending upon the radial position of the tracks.

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