JPS5570942A - Tracking error detector - Google Patents

Tracking error detector

Info

Publication number
JPS5570942A
JPS5570942A JP14238878A JP14238878A JPS5570942A JP S5570942 A JPS5570942 A JP S5570942A JP 14238878 A JP14238878 A JP 14238878A JP 14238878 A JP14238878 A JP 14238878A JP S5570942 A JPS5570942 A JP S5570942A
Authority
JP
Japan
Prior art keywords
light
light source
tracking error
semiconductor laser
spot
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.)
Granted
Application number
JP14238878A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6136296B2 (enrdf_load_stackoverflow
Inventor
Toru Fujishima
Masanori Ogino
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14238878A priority Critical patent/JPS5570942A/ja
Publication of JPS5570942A publication Critical patent/JPS5570942A/ja
Publication of JPS6136296B2 publication Critical patent/JPS6136296B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP14238878A 1978-11-20 1978-11-20 Tracking error detector Granted JPS5570942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14238878A JPS5570942A (en) 1978-11-20 1978-11-20 Tracking error detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14238878A JPS5570942A (en) 1978-11-20 1978-11-20 Tracking error detector

Publications (2)

Publication Number Publication Date
JPS5570942A true JPS5570942A (en) 1980-05-28
JPS6136296B2 JPS6136296B2 (enrdf_load_stackoverflow) 1986-08-18

Family

ID=15314195

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14238878A Granted JPS5570942A (en) 1978-11-20 1978-11-20 Tracking error detector

Country Status (1)

Country Link
JP (1) JPS5570942A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4759007A (en) * 1981-12-10 1988-07-19 Discovision Associates Storage medium track pitch detector

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6445859A (en) * 1987-08-10 1989-02-20 Hirano Kinzoku Co Ltd Tenter type hot air treatment apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4759007A (en) * 1981-12-10 1988-07-19 Discovision Associates Storage medium track pitch detector

Also Published As

Publication number Publication date
JPS6136296B2 (enrdf_load_stackoverflow) 1986-08-18

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