Method of compensating for seek errors of pickup assembly

Details Method of compensating for seek errors of pickup assembly Method of compensating for seek errors of pickup assembly

2006-01-03

2006-01-03

Neyzari, Ali (Department: 2655)

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

C369S053350, C369S044280, C369S044320

Reexamination Certificate

active

06982936

ABSTRACT:
Disclosed herewith is a method of compensating for the seek errors of a pickup assembly. The method includes the steps of calculating a target track number to read data stored in an optical disc by transferring a pickup assembly across the optical disc; determining whether a seek error has to be compensated for in a radially outward direction of the optical disc; if the seek error has to be compensated for in a radially inward direction, compensating for the seek error; transferring the pickup assembly in the radially inward direction, reading an address of a current position of the pickup assembly, and determining whether the current position of the pickup assembly coincides with a target position; if the current position of the pickup assembly coincides with the target position, calculating the seek error in a radially inward direction and calculating an error compensation value in a radially inward direction; and storing the calculated error compensation value and using it to perform a next seek operation.

REFERENCES:
patent: 6891781 (2005-05-01), Kadlec et al.
patent: 6891789 (2005-05-01), Watt et al.
patent: 6898164 (2005-05-01), Kadlec et al.

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