JPS62173045U - - Google Patents
Info
- Publication number
- JPS62173045U JPS62173045U JP6160586U JP6160586U JPS62173045U JP S62173045 U JPS62173045 U JP S62173045U JP 6160586 U JP6160586 U JP 6160586U JP 6160586 U JP6160586 U JP 6160586U JP S62173045 U JPS62173045 U JP S62173045U
- Authority
- JP
- Japan
- Prior art keywords
- optical disk
- readout signal
- measuring device
- scratch
- reference level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
- Manufacturing Optical Record Carriers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6160586U JPS62173045U (US06272168-20010807-M00014.png) | 1986-04-23 | 1986-04-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6160586U JPS62173045U (US06272168-20010807-M00014.png) | 1986-04-23 | 1986-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62173045U true JPS62173045U (US06272168-20010807-M00014.png) | 1987-11-04 |
Family
ID=30895091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6160586U Pending JPS62173045U (US06272168-20010807-M00014.png) | 1986-04-23 | 1986-04-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62173045U (US06272168-20010807-M00014.png) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008111830A (ja) * | 2006-10-02 | 2008-05-15 | Hitachi High-Technologies Corp | ディスクの周面欠陥検出方法および検出装置 |
| JP2008122365A (ja) * | 2006-10-16 | 2008-05-29 | Hitachi High-Technologies Corp | ガラスディスクの周面欠陥検出光学系および周面欠陥検出装置 |
-
1986
- 1986-04-23 JP JP6160586U patent/JPS62173045U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008111830A (ja) * | 2006-10-02 | 2008-05-15 | Hitachi High-Technologies Corp | ディスクの周面欠陥検出方法および検出装置 |
| JP2008122365A (ja) * | 2006-10-16 | 2008-05-29 | Hitachi High-Technologies Corp | ガラスディスクの周面欠陥検出光学系および周面欠陥検出装置 |
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