JPS6350918A - Information recording and reproducing device - Google Patents

Information recording and reproducing device

Info

Publication number
JPS6350918A
JPS6350918A JP19431386A JP19431386A JPS6350918A JP S6350918 A JPS6350918 A JP S6350918A JP 19431386 A JP19431386 A JP 19431386A JP 19431386 A JP19431386 A JP 19431386A JP S6350918 A JPS6350918 A JP S6350918A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
address
part
recording layer
recording
light
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
JP19431386A
Inventor
Shinji Kondo
Original Assignee
Matsushita Electric Ind 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

Links

Abstract

PURPOSE: To perform the write of data without losing a content written on a sector desired to be written, by providing two optical sensitive recording layers which react only to respective different light having specific wavelength, and transmit the light other than the above light.
CONSTITUTION: When a read command, an object sector address, and a recording layer selection signal are supplied to a recording control part 1, an address reading part 2 drives a laser drive 5, and reads out a bit of address information from a sector identifier part 13a, and sends it to an address comparison part 1a. The address comparison part 1a compares a sent address with an object address, and when coincidence between a compared result being obtained, the control part 1 issues an instruction to read the data to a first recording layer recording and reproducing part 3, or a second recording layer recording and reproducing part 4, corresponding to a first recording layer, or a second recording layer indicate by the recording layer selection signal. The reproducing part 3 or 4 drives the laser drive 5, and the data in the data area 13b or 11b of an optical disk 7 is read out from a semiconductor laser 6 by a laser beam having a wavelength of λ1 or λ2. In this case, the area 13b or 11b reacts only to light having the wavelength of λ1 or λ2, and transmits light having other wavelength.
COPYRIGHT: (C)1988,JPO&Japio
JP19431386A 1986-08-20 1986-08-20 Information recording and reproducing device Pending JPS6350918A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19431386A JPS6350918A (en) 1986-08-20 1986-08-20 Information recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19431386A JPS6350918A (en) 1986-08-20 1986-08-20 Information recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS6350918A true true JPS6350918A (en) 1988-03-03

Family

ID=16322527

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19431386A Pending JPS6350918A (en) 1986-08-20 1986-08-20 Information recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS6350918A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0277655A2 (en) * 1987-02-04 1988-08-10 Olympus Optical Co., Ltd. Card-form recording medium and data recording device therefor
EP0426409A2 (en) * 1989-10-30 1991-05-08 Matsushita Electric Industrial Co., Ltd. Multilayered optial disk
EP0773541A3 (en) * 1991-06-04 1998-03-18 International Business Machines Corporation Multiple data surface optical medium and data storage system

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0277655A2 (en) * 1987-02-04 1988-08-10 Olympus Optical Co., Ltd. Card-form recording medium and data recording device therefor
US6958971B2 (en) 1989-10-30 2005-10-25 Matsushita Electric Industrial Co., Ltd. Method of retrieving information with layer identification data from a multi-layered optical disk
US5428597A (en) * 1989-10-30 1995-06-27 Matsushita Electric Industrial Co., Ltd. Multi-layered optical disk with track and layer identification
EP0731461A1 (en) * 1989-10-30 1996-09-11 Matsushita Electric Industrial Co., Ltd. Multi-layered optical disk
EP1498887A3 (en) * 1989-10-30 2006-06-07 Matsushita Electric Industrial Co., Ltd. Multi-layered optical disk
US5764620A (en) * 1989-10-30 1998-06-09 Matsushita Electric Co. Multi-layered optical disk with shifted track and layer identification and method of detecting a track
US5870374A (en) * 1989-10-30 1999-02-09 Matsushita Electric Industrial Co., Ltd. Multi-layer optical disc having a pair of substrates spaced by an adhesive material
EP0910072A2 (en) * 1989-10-30 1999-04-21 Matsushita Electric Industrial Co., Ltd. Multi-layered optical disk
EP1515316A3 (en) * 1989-10-30 2006-06-07 Matsushita Electric Industrial Co., Ltd. Multi-layered optical disk
US6985427B2 (en) 1989-10-30 2006-01-10 Matsushita Electric Industrial Co., Ltd. Multi-layered optical disk and method of detecting a track
EP0910072A3 (en) * 1989-10-30 2002-12-04 Matsushita Electric Industrial Co., Ltd. Multi-layered optical disk
EP0426409A2 (en) * 1989-10-30 1991-05-08 Matsushita Electric Industrial Co., Ltd. Multilayered optial disk
US6728195B2 (en) 1989-10-30 2004-04-27 Matsushita Electric Industrial Co., Ltd. Multi-layered optical disk with shifted track and layer identification and method of detecting a track
EP1498887A2 (en) * 1989-10-30 2005-01-19 Matsushita Electric Industrial Co., Ltd. Multi-layered optical disk
EP1515316A2 (en) * 1989-10-30 2005-03-16 Matsushita Electric Industrial Co., Ltd. Multi-layered optical disk
EP1304688A2 (en) * 1991-06-04 2003-04-23 International Business Machines Corporation Optical data storage system
EP1030293A3 (en) * 1991-06-04 2000-12-06 International Business Machines Corporation Multiple data surface optical medium and data storage system
EP1030293A2 (en) * 1991-06-04 2000-08-23 International Business Machines Corporation Multiple data surface optical medium and data storage system
EP0773541A3 (en) * 1991-06-04 1998-03-18 International Business Machines Corporation Multiple data surface optical medium and data storage system
EP1696428A2 (en) * 1991-06-04 2006-08-30 Mitsubishi Denki Kabushiki Kaisha Optical data storage system
EP1304688A3 (en) * 1991-06-04 2006-09-06 Mitsubishi Denki Kabushiki Kaisha Optical data storage system
EP1696428A3 (en) * 1991-06-04 2006-09-13 Mitsubishi Denki Kabushiki Kaisha Optical data storage system

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