Method for detecting eccentricity of an optical disc, and...

Details Method for detecting eccentricity of an optical disc, and... Method for detecting eccentricity of an optical disc, and...

2007-08-14

2007-08-14

Psitos, A M (Department: 2627)

Dynamic information storage or retrieval

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

Mechanism control by the control signal

C369S053140

Reexamination Certificate

active

10754983

ABSTRACT:
An optical disc drive includes a spindle motor and a computer program. The spindle motor is adapted for rotating an optical disc. The computer program configures the optical disc drive to perform consecutive steps of a method for detecting eccentricity of the optical disc, including: a) while the optical disc drive operates under focused and track-locked conditions, controlling the spindle motor to rotate the optical disc at a specified rotation speed; b) measuring an eccentricity value of the optical disc being rotated by the spindle motor; and c) comparing the eccentricity value measured in step b) with a reference value to determine extent of eccentricity of the optical disc.

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