发明名称 |
Optical disk apparatus with an erase checking function |
摘要 |
An optical disk apparatus is disclosed in which data is recorded, reproduced and erased on an erasable optical disk. After first data is recorded in a predetermined track or sector, it is erased. Second data is then recorded in the same track or sector, and it is decided that the erase function is normal when the second data is reproduced correctly.
|
申请公布号 |
US4841512(A) |
申请公布日期 |
1989.06.20 |
申请号 |
US19860942790 |
申请日期 |
1986.12.17 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
KUBOTA, SHINJI;HIROSAWA, KAZUTOYO;YOSHIDA, TOMIO |
分类号 |
G11B7/00;G11B7/0055;G11B7/30;G11B27/36 |
主分类号 |
G11B7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|