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
Application number
JP6160586U
Other languages
English (en)
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP6160586U priority Critical patent/JPS62173045U/ja
Publication of JPS62173045U publication Critical patent/JPS62173045U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
JP6160586U 1986-04-23 1986-04-23 Pending JPS62173045U (enrdf_load_stackoverflow)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6160586U JPS62173045U (enrdf_load_stackoverflow) 1986-04-23 1986-04-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6160586U JPS62173045U (enrdf_load_stackoverflow) 1986-04-23 1986-04-23

Publications (1)

Publication Number Publication Date
JPS62173045U true JPS62173045U (enrdf_load_stackoverflow) 1987-11-04

Family

ID=30895091

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6160586U Pending JPS62173045U (enrdf_load_stackoverflow) 1986-04-23 1986-04-23

Country Status (1)

Country Link
JP (1) JPS62173045U (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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