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

1998-12-01

2000-08-29

Huber, Paul W.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369 95, 369124, G11B 509, G11B 374, G11B 700

Patent

active

061118311

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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