The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 2011
Filed:
Feb. 28, 2008
Du-seop Yoon, Gyeonggi-do, KR;
Kyung-geun Lee, Gyeonggi-do, KR;
Byoung-ho Choi, Gyeonggi-do, KR;
Jae-seong Shim, Seoul, KR;
Du-seop Yoon, Gyeonggi-do, KR;
Kyung-geun Lee, Gyeonggi-do, KR;
Byoung-ho Choi, Gyeonggi-do, KR;
Jae-seong Shim, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
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.