JP2501870Y2 - 光ディスクテストシステム - Google Patents

光ディスクテストシステム

Info

Publication number
JP2501870Y2
JP2501870Y2 JP8824589U JP8824589U JP2501870Y2 JP 2501870 Y2 JP2501870 Y2 JP 2501870Y2 JP 8824589 U JP8824589 U JP 8824589U JP 8824589 U JP8824589 U JP 8824589U JP 2501870 Y2 JP2501870 Y2 JP 2501870Y2
Authority
JP
Japan
Prior art keywords
recording
erasing
spot
signal
reproducing
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.)
Expired - Lifetime
Application number
JP8824589U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0328523U (enrdf_load_stackoverflow
Inventor
修司 占部
彰 大矢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
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 by Yokogawa Electric Corp filed Critical Yokogawa Electric Corp
Priority to JP8824589U priority Critical patent/JP2501870Y2/ja
Publication of JPH0328523U publication Critical patent/JPH0328523U/ja
Application granted granted Critical
Publication of JP2501870Y2 publication Critical patent/JP2501870Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Recording Or Reproduction (AREA)
JP8824589U 1989-07-27 1989-07-27 光ディスクテストシステム Expired - Lifetime JP2501870Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8824589U JP2501870Y2 (ja) 1989-07-27 1989-07-27 光ディスクテストシステム

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8824589U JP2501870Y2 (ja) 1989-07-27 1989-07-27 光ディスクテストシステム

Publications (2)

Publication Number Publication Date
JPH0328523U JPH0328523U (enrdf_load_stackoverflow) 1991-03-22
JP2501870Y2 true JP2501870Y2 (ja) 1996-06-19

Family

ID=31637869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8824589U Expired - Lifetime JP2501870Y2 (ja) 1989-07-27 1989-07-27 光ディスクテストシステム

Country Status (1)

Country Link
JP (1) JP2501870Y2 (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH0328523U (enrdf_load_stackoverflow) 1991-03-22

Similar Documents

Publication Publication Date Title
CA1057397A (en) Synchronous detection tracking
JPH10334574A (ja) 光ディスク判別装置
JPH06506557A (ja) 光メモリ用広域ビーム検出装置
CA2163176C (en) Information recording and reproducing apparatus using light beam modulation on a spiral guide groove disk
JPH0973649A (ja) 光ディスク装置
JP2501870Y2 (ja) 光ディスクテストシステム
JPH0221053B2 (enrdf_load_stackoverflow)
EP0470942A1 (en) Method and apparatus for detecting focusing errors utilizing chromatic aberration
JP2767577B2 (ja) 光学ディスク上に予め作られたトラックを用いずに情報を記録する方法及び装置
US5260930A (en) Optical information recording medium and reproducing apparatus for reproducing information from the medium
EP0330414B1 (en) Optical information processing apparatus for performing track jump while avoiding preformat signal
JPH0668498A (ja) 情報記録媒体処理装置
US7916164B2 (en) Labeling methods and apparatus using energy of two wavelengths
JP2817520B2 (ja) 同時記録再生光ディスク及びその光ヘッド装置
JP2741961B2 (ja) 光学的情報記録再生装置
JP2653105B2 (ja) ウォーブリングトラックの測定方法
JPS6142327B2 (enrdf_load_stackoverflow)
US20020139941A1 (en) Tilt detector and tilt detection method in the radial and tangential directions
JPH10162400A (ja) 相変化型光ディスク媒体記録再生装置
US4863228A (en) Apparatus and a method of deflecting laser convergent light
JP2966612B2 (ja) 情報再生装置
KR900006957B1 (ko) 안내홈이 없는 광학 디스크의 정보신호 기록재생용 광학 헤드장치
JP2001184689A (ja) 光ディスク記録装置、光ディスク記録方法
JP2856375B2 (ja) 光磁気記録再生装置
JP2709176B2 (ja) 光ピックアップ装置