发明名称 |
Photochromic optical disk read/write apparatus which prevents deterioration of the stored information during tracking and reading |
摘要 |
A photochromic optical disk read/write apparatus is provided having, in addition to the beams of light for reading and writing, a tracking light beam which is used for tracking during the reading, erasing, and writing of information signals and a standby state so that deterioration in the recording medium quality can be lessened.
|
申请公布号 |
US5235582(A) |
申请公布日期 |
1993.08.10 |
申请号 |
US19910653550 |
申请日期 |
1991.02.11 |
申请人 |
PIONEER ELECTRONIC CORPORATION |
发明人 |
TANIGUCHI, HITOSHI;TANAKA, SATORU |
分类号 |
G03C5/56;G11B7/00;G11B7/0045;G11B7/0055;G11B7/09;G11B7/24;G11B7/244;G11B7/30 |
主分类号 |
G03C5/56 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|