JPS61160854A - Optical information recording and reproducing device - Google Patents

Optical information recording and reproducing device

Info

Publication number
JPS61160854A
JPS61160854A JP28084784A JP28084784A JPS61160854A JP S61160854 A JPS61160854 A JP S61160854A JP 28084784 A JP28084784 A JP 28084784A JP 28084784 A JP28084784 A JP 28084784A JP S61160854 A JPS61160854 A JP S61160854A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
disk
device
side
type
information
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
JP28084784A
Inventor
Takayuki Aizawa
Shigeru Aoi
Takaaki Ashinuma
Nobuhiro Kasama
Takehiko Shibata
Yasuo Suzuki
Masaharu Tsukada
Makoto Yomo
Original Assignee
Canon Inc
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

Links

Abstract

PURPOSE: To improve the working efficiency of an information adjusting device by using a photomagnetic thin film to form a single side of a 2-sided disk and a postscript type thin film to form the other side of the disk and providing the optical head units of the same constitution on both sides of the disk.
CONSTITUTION: A 2-sided disk 1 contains a photomagnetic thin film side 2 and a postscript type recording side 3, and the upper and lower optical heads 81 and 82 of the disk 1 have the same constitution. A disk type detecting part 4 detects various types of disks including a ROM disk, a DRAW disk, an E- DRAW disk, etc. and sendsthe signals showing these types to a disk controller 5. The controller 5 controls totally a disk device and gives an indication to a laser modulation circuit 6 for the laser power corresponding to the type of the disk. Thus the powre of a semiconductor laser 10 is controlled. While the signal given from a photoreceptor 16 is processed by a signal processing circuit 17. Then the focus tracking is controlled by a focus tracking control circuit 14. Thus the working efficiency of an information adjusting device is improved.
COPYRIGHT: (C)1986,JPO&Japio
JP28084784A 1984-12-30 1984-12-30 Optical information recording and reproducing device Pending JPS61160854A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28084784A JPS61160854A (en) 1984-12-30 1984-12-30 Optical information recording and reproducing device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP28084784A JPS61160854A (en) 1984-12-30 1984-12-30 Optical information recording and reproducing device
FR8517691A FR2575857B1 (en) 1984-11-29 1985-11-29 optical storage apparatus information
US07953774 US5289451A (en) 1984-11-29 1992-09-30 Optical information recording/reproduction apparatus including means for detecting the type of recording medium

Publications (1)

Publication Number Publication Date
JPS61160854A true true JPS61160854A (en) 1986-07-21

Family

ID=17630806

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28084784A Pending JPS61160854A (en) 1984-12-30 1984-12-30 Optical information recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS61160854A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6355745A (en) * 1986-08-26 1988-03-10 Nippon Telegr & Teleph Corp <Ntt> Double-face type optical recording medium
JPH0282157U (en) * 1988-12-09 1990-06-25
US6633525B2 (en) 1992-10-05 2003-10-14 Mitsubishi Denki Kabushiki Kaisha Optical disk having an attribute which designates whether a recording area permits rewriting or not
US6775220B2 (en) 1992-10-05 2004-08-10 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device
US7548497B2 (en) 1992-10-05 2009-06-16 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device
US7566417B2 (en) 2002-08-08 2009-07-28 Kobe Steel, Ltd. Ag base alloy thin film and sputtering target for forming Ag base alloy thin film

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6355745A (en) * 1986-08-26 1988-03-10 Nippon Telegr & Teleph Corp <Ntt> Double-face type optical recording medium
JPH0282157U (en) * 1988-12-09 1990-06-25
US7207051B2 (en) 1992-10-05 2007-04-17 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device
US6775220B2 (en) 1992-10-05 2004-08-10 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device
US6834033B2 (en) * 1992-10-05 2004-12-21 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device
US6853611B2 (en) 1992-10-05 2005-02-08 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device
US6930965B2 (en) 1992-10-05 2005-08-16 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device
US7164641B2 (en) 1992-10-05 2007-01-16 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device
US6633525B2 (en) 1992-10-05 2003-10-14 Mitsubishi Denki Kabushiki Kaisha Optical disk having an attribute which designates whether a recording area permits rewriting or not
US7227815B2 (en) 1992-10-05 2007-06-05 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device
US7254104B2 (en) 1992-10-05 2007-08-07 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device
US7548497B2 (en) 1992-10-05 2009-06-16 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device
US7924693B2 (en) 1992-10-05 2011-04-12 Mitsubishi Denki Kabushiki Kaisha Optical disk and optical disk drive device
US7566417B2 (en) 2002-08-08 2009-07-28 Kobe Steel, Ltd. Ag base alloy thin film and sputtering target for forming Ag base alloy thin film
US7722942B2 (en) 2002-08-08 2010-05-25 Kobe Steel, Ltd. Ag base alloy thin film and sputtering target for forming Ag base alloy thin film
US7776420B2 (en) 2002-08-08 2010-08-17 Kobe Steel, Ltd. Ag base alloy thin film and sputtering target for forming Ag base alloy thin film

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