Patent Number: 6,480,445

Title: Optical disk reproducing apparatus and method having improved servo control

Abstract: Usable in an optical disk player, a servo device and a servo method for anoptical disk using a plurality of beams prevent a servo error due to adefect of the optical disk by forming two beam spots on a single track ofthe optical disk and selectively switching to perform a servo controllingin accordance with a lagging beam spot when a defect of the disk isdetected during the servo controlling in accordance with a leading beamspot.

Inventors: Yun; In-Hyun (Kyunggi-do, KR), Lee; Seong-Ju (Kyunggi-do, KR), Bae; Dong-Seok (Kyunggi-do, KR), Pack; Bok-Hyun (Kyunggi-do, KR)


International Classification: G11B 7/09 (20060101); G11B 7/08 (20060101); G11B 007/09 ()

Expiration Date: 11/12014