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:
May. 13, 2008
Filed:
May. 28, 2003
Kyung-geun Lee, Gyeonggi-do, KR;
Myong-do RO, Gyeonggi-do, KR;
In-sik Park, Gyeonggi-do, KR;
Du-seop Yoon, Gyeonggi-do, KR;
Chang-min Park, Gyeonggi-do, KR;
Kyung-geun Lee, Gyeonggi-do, KR;
Myong-do Ro, Gyeonggi-do, KR;
In-sik Park, Gyeonggi-do, KR;
Du-seop Yoon, Gyeonggi-do, KR;
Chang-min Park, Gyeonggi-do, KR;
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
A reproduction-only optical disc has a lead-in area, a user data area, and a lead-out area. Disc related information recorded on at least one of the lead-in area and the lead-out area is recorded by high frequency groove wobbles, and data of the user data area is recorded by pits. Since the high-density reproduction-only optical disc uses the same channels for reproduction signals as a high-density recordable optical disc, the two types of discs are consistent with each other and are compatible with the same disc drives.