JPS5344A - Information position detecting method - Google Patents

Information position detecting method

Info

Publication number
JPS5344A
JPS5344A JP7488376A JP7488376A JPS5344A JP S5344 A JPS5344 A JP S5344A JP 7488376 A JP7488376 A JP 7488376A JP 7488376 A JP7488376 A JP 7488376A JP S5344 A JPS5344 A JP S5344A
Authority
JP
Japan
Prior art keywords
information position
position detecting
detecting method
spot
recording
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
JP7488376A
Other languages
Japanese (ja)
Inventor
Hiroyoshi Funato
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP7488376A priority Critical patent/JPS5344A/en
Publication of JPS5344A publication Critical patent/JPS5344A/en
Pending legal-status Critical Current

Links

Landscapes

  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

PURPOSE: To secure a high-accuracy detection eliminating an optical system by recording one spot as a hologram in the recording medium for each information position and then by detecting the spot through a photo detection. As a result, the malfunction caused by the dust attached on the medium.
COPYRIGHT: (C)1978,JPO&Japio
JP7488376A 1976-06-24 1976-06-24 Information position detecting method Pending JPS5344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7488376A JPS5344A (en) 1976-06-24 1976-06-24 Information position detecting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7488376A JPS5344A (en) 1976-06-24 1976-06-24 Information position detecting method

Publications (1)

Publication Number Publication Date
JPS5344A true JPS5344A (en) 1978-01-05

Family

ID=13560193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7488376A Pending JPS5344A (en) 1976-06-24 1976-06-24 Information position detecting method

Country Status (1)

Country Link
JP (1) JPS5344A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4929210A (en) * 1984-10-26 1990-05-29 Nokia Graetz Cathode-ray tube supporting rack

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4929210A (en) * 1984-10-26 1990-05-29 Nokia Graetz Cathode-ray tube supporting rack

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