G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 7/24 (2006.01) G11B 7/004 (2006.01) G11B 7/007 (2006.01) G11B 7/095 (2006.01) G11B 27/19 (2006.01) G11B 27/24 (2006.01) G11B 7/0037 (2006.01) G11B 27/30 (2006.01)
Patent
CA 2390803
An optical recording medium has a user data area and a lead-out area, wherein the user data area and the lead-out area each has grooves and lands formed thereon. Wobbles are formed on at least one lateral surface of grooves of the user data area and the lead-out area, and configured such that wobble characteristics are made different between the user data area and the lead-out area. Different types of wobbles are formed on the grooves of either the user data area or the lead-out area, thereby preventing an optical pickup that performs recording/reproduction from deviating from the user data area. Also, in a multi-layer optical recording medium, a whole area of a recording layer is configured to have a same condition, thereby preventing deterioration in reproduction and/or recording due to a difference in light power transmittance of another recording layer.
Choi Byoung-Ho
Lee Kyung-Geun
Shim Jae-Seong
Yoon Du-Seop
Ridout & Maybee Llp
Samsung Electronics Co. Ltd.
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