US 6,982,936 B2 | ||
Method of compensating for seek errors of pickup assembly | ||
II-Kweon Joung, Ansan-si (Korea, Republic of) | ||
Assigned to Samsung Electro-Mechanics Co., Ltd., Kyunggi-Do (Korea, Republic of) | ||
Filed on Sep. 12, 2002, as Appl. No. 10/241,664. | ||
Claims priority of application No. 2002-23093 (KR), filed on Apr. 26, 2002. | ||
Prior Publication US 2003/0202432 A1, Oct. 30, 2003 | ||
Int. Cl. G11B 7/00 (2006.01) |
U.S. Cl. 369—30.22 | 5 Claims |
1. A method of compensating for the seek errors of a pickup assembly, comprising the steps of:
calculating a target track number using the number of frames of a track, a linear velocity, a track pitch, a radius of a track
and the like 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 as transfer data to perform a next seek operation of transferring
the pickup assembly.
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