发明名称 |
Optical system for recording, reproducing, and/or erasing information |
摘要 |
Disclosed in a system for recording, reproducing, and/or erasing information as recording pits on a recording medium. This medium has guide grooves for recording reproducing, and/or erasing the informatin signal. A condition whereby the value which is obtained by subtracting the groove width from the groove pitch is larger than a width of the recording pits is satisfied. A predetermined position for recording, reproducing, and/or erasing is set between the guide grooves. Alternatively, a condition whereby the width of a guide groove is larger than the width of a recording pit is satisfied. A predetermined position for recording, reproducing, and/or erasing is set on the guide groove.
|
申请公布号 |
US4775965(A) |
申请公布日期 |
1988.10.04 |
申请号 |
US19870099488 |
申请日期 |
1987.09.22 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
YOSHIMOTO, KYOSUKE;ITO, OSAMU |
分类号 |
G11B7/013;G11B7/09;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/013 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|