发明公开
- 专利标题： Information recording medium
- 专利标题（中）： 信息记录介质
-
申请号： EP00108553.9申请日： 1997-07-14
-
公开(公告)号： EP1031968A2公开(公告)日： 2000-08-30
- 发明人: Miyamoto, Harukazu , Suzuki, Yoshio , Suzuki, Motoyuki , Sugiyama, Hisataka , Minemura, Hiroyuki , Fushimi, Tetsuya , Tokushuku, Nobuhiro
- 申请人： Hitachi, Ltd.
- 申请人地址： 6 Kanda Surugadai 4-chome Chiyoda-ku, Tokyo 101-8010 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 101-8010 JP
- 代理机构： Strehl Schübel-Hopf & Partner
- 优先权： JP19729796 19960726; JP2348097 19970206
- 主分类号： G11B7/007
- IPC分类号： G11B7/007
摘要：
An information recording medium has a spiral or concentric groove structure along tracks formed on a disk-like substrate wherein each of the tracks is divided into a plurality of recording units, each of the recording units includes a blank portion in a circumferential direction of the groove structure, the groove structure is formed with a wobble in a fixed cycle in a radial direction, and either each length of the recording units is an integer multiple of a cycle of the wobble or the blank portion is so formed that a phase of the wobble formed on the blank portion is continued with a phase of the wobble of the groove structure within another recording unit adjacent to the blank portion.
公开/授权文献
- EP1031968B1 Information recording medium 公开/授权日：2004-02-18
信息查询
IPC分类:
