发明名称 |
Wobble Information Recording Method, Information Recording Medium, and Recording and Reproduction Method and Apparatus Thereof |
摘要 |
An optical disk and a method for identifying the optical disk are provided which make it possible to identify a recording system of the optical disk easily in a short time by a recording and reproduction apparatus when a groove-recording system and a land-recording system are both employed in one kind of optical disk, for, example, a BD-R. Specifically, the polarity upon reproducing the wobble information is made to be the same in both of the optical disk of groove-recording system and the optical disk of land-recording system. The recording system of the optical disk that shows the same wobble polarity irrespective of the recording system can be easily detected by finding a tracking polarity that can recognize the wobble information by changing the tracking polarity, whereby the start-up time of the recording and reproduction apparatus can be shortened.
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申请公布号 |
US2007291628(A1) |
申请公布日期 |
2007.12.20 |
申请号 |
US20050577926 |
申请日期 |
2005.05.10 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
ABE SHINYA;ISHIDA TAKASHI |
分类号 |
G11B7/007;G11B7/00;G11B7/005 |
主分类号 |
G11B7/007 |
代理机构 |
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