Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data clocking
Patent
1997-02-20
1998-08-11
Huber, Paul W.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data clocking
369 59, G11B 509
Patent
active
057935491
ABSTRACT:
Methods and apparatus are provided for simultaneously reading data from multiple tracks of an optical disk at a high rate. Circuitry is provided for generating a reference data clock independently of spindle motor speed and the spindle motor speed servo circuitry. Circuitry is also provided for deriving individual track data clocks from the reference data clock, while correcting for phase and frequency 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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Alon Amir
Finkelstein Jacob
DeHaemer Michael J.
Huber Paul W.
Pisano Nicola A.
ZEN Research N.V.
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