发明公开
EP1150283A3 Information recording medium which indicates information according to the wobbling of a track and information recording and reproducing apparatus
失效
信息记录介质，其指示根据Spuroszillation信息，以及信息记录和再现装置
- 专利标题： Information recording medium which indicates information according to the wobbling of a track and information recording and reproducing apparatus
- 专利标题（中）： 信息记录介质，其指示根据Spuroszillation信息，以及信息记录和再现装置
-
申请号： EP01115562.9申请日： 1997-10-22
-
公开(公告)号： EP1150283A3公开(公告)日： 2001-11-21
- 发明人: Maeda, Takeshi , Miyamoto, Harukazu
- 申请人： Hitachi Ltd.
- 申请人地址： 6, Kanda Surugadai 4-chome, Chiyoda-ku Tokyo JP
- 专利权人： Hitachi Ltd.
- 当前专利权人： Hitachi Ltd.
- 当前专利权人地址： 6, Kanda Surugadai 4-chome, Chiyoda-ku Tokyo JP
- 代理机构： Calderbank, Thomas Roger
- 优先权： JP27942496 19961022; JP10293897 19970421
- 主分类号： G11B7/007
- IPC分类号： G11B7/007 ; G11B7/26 ; G11B27/19 ; G11B27/30
摘要：
An optical disk includes groove tracks (270,272) consisting of a plurality of grooves mutually space apart by a fixed space, and land tracks (271,273) consisting of the areas between the groove tracks, wherein the period of wobbling waveforms of the borders (14,15) between the groove tracks and the land tracks are constant on each border, but the wobbling waveforms of the opposite portions of the borders across the track are shifted in phase by a predetermined phase difference. Information is detected by using a predetermined relation between the the information and the changes in said phase shift.
公开/授权文献
信息查询
IPC分类:
