JPH0239022B2 - - Google Patents

Info

Publication number
JPH0239022B2
JPH0239022B2 JP61281751A JP28175186A JPH0239022B2 JP H0239022 B2 JPH0239022 B2 JP H0239022B2 JP 61281751 A JP61281751 A JP 61281751A JP 28175186 A JP28175186 A JP 28175186A JP H0239022 B2 JPH0239022 B2 JP H0239022B2
Authority
JP
Japan
Prior art keywords
information
pits
information track
track
semiconductor laser
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
JP61281751A
Other languages
English (en)
Japanese (ja)
Other versions
JPS62157339A (ja
Inventor
Yoshito Tsunoda
Takeshi Maeda
Toshimitsu Myauchi
Kimio Tateno
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 JP61281751A priority Critical patent/JPS62157339A/ja
Publication of JPS62157339A publication Critical patent/JPS62157339A/ja
Publication of JPH0239022B2 publication Critical patent/JPH0239022B2/ja
Granted legal-status Critical Current

Links

JP61281751A 1986-11-28 1986-11-28 情報再生装置 Granted JPS62157339A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61281751A JPS62157339A (ja) 1986-11-28 1986-11-28 情報再生装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61281751A JPS62157339A (ja) 1986-11-28 1986-11-28 情報再生装置

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP50142054A Division JPS5265406A (en) 1975-11-27 1975-11-27 Inforamtion reproduction device

Publications (2)

Publication Number Publication Date
JPS62157339A JPS62157339A (ja) 1987-07-13
JPH0239022B2 true JPH0239022B2 (xx) 1990-09-03

Family

ID=17643468

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61281751A Granted JPS62157339A (ja) 1986-11-28 1986-11-28 情報再生装置

Country Status (1)

Country Link
JP (1) JPS62157339A (xx)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4893348A (xx) * 1972-03-10 1973-12-03
JPS4894378A (xx) * 1972-03-13 1973-12-05
JPS502569A (xx) * 1973-03-02 1975-01-11
JPS5059102A (xx) * 1973-09-28 1975-05-22
JPS50112056A (xx) * 1974-02-12 1975-09-03
JPS50123351A (xx) * 1974-03-14 1975-09-27
JPS5184206A (xx) * 1974-12-09 1976-07-23 Teletype Corp
JPS5265406A (en) * 1975-11-27 1977-05-30 Hitachi Ltd Inforamtion reproduction device
JPS5693348A (en) * 1979-12-26 1981-07-28 Shinko Electric Ind Co Ltd Stem
JPS618496A (ja) * 1984-12-24 1986-01-16 Hitachi Ltd 扇風機

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4893348A (xx) * 1972-03-10 1973-12-03
JPS4894378A (xx) * 1972-03-13 1973-12-05
JPS502569A (xx) * 1973-03-02 1975-01-11
JPS5059102A (xx) * 1973-09-28 1975-05-22
JPS50112056A (xx) * 1974-02-12 1975-09-03
JPS50123351A (xx) * 1974-03-14 1975-09-27
JPS5184206A (xx) * 1974-12-09 1976-07-23 Teletype Corp
JPS5265406A (en) * 1975-11-27 1977-05-30 Hitachi Ltd Inforamtion reproduction device
JPS5693348A (en) * 1979-12-26 1981-07-28 Shinko Electric Ind Co Ltd Stem
JPS618496A (ja) * 1984-12-24 1986-01-16 Hitachi Ltd 扇風機

Also Published As

Publication number Publication date
JPS62157339A (ja) 1987-07-13

Similar Documents

Publication Publication Date Title
US4520472A (en) Beam expansion and relay optics for laser diode array
EP0405742B1 (en) Method for increasing linear bit density in magneto-optical storage media
US5329517A (en) Optical information recording and reproducing apparatus utilizing a plurality of recording light spots
JPH03259423A (ja) 光導波路記憶媒体及び光再生装置
JPS6376117A (ja) 光ディスク・アクセス装置
JPH0239022B2 (xx)
US5706263A (en) Method and apparatus for high-density reproduction
JPH04176025A (ja) 光学ヘッド
JPH01204220A (ja) 記録再生方法
JP3099318B2 (ja) 光記録媒体の信号再生方法
JPS6233648B2 (xx)
JP2805064B2 (ja) 光記録／再生装置
JPH04368647A (ja) 光磁気ヘッド装置および光磁気記録方法
HU208587B (en) Method for tracking an optical scanner on the track of a data carrier and optical scanner performing said method
JP2613921B2 (ja) 光磁気メモリ装置
JPS6025003A (ja) 光磁気記録装置
JPH08338904A (ja) 光学素子及び光学的情報記録再生装置
JPH03273545A (ja) 光磁気記録再生装置
JPS62157338A (ja) 半導体レ−ザ光学装置
JPS63117324A (ja) 光情報装置
JPH0246544A (ja) 光メモリ装置
JPH08339551A (ja) 光学的情報記録再生装置
JPH0573983A (ja) 光磁気記録方法、および光磁気記録再生装置
JPS59125A (ja) 光学系
JPH08124232A (ja) 光ヘッドと光ディスク装置