JPS61134928A - 記録／未記録信号判定回路 - Google Patents

記録／未記録信号判定回路

Info

Publication number
JPS61134928A
JPS61134928A JP25699484A JP25699484A JPS61134928A JP S61134928 A JPS61134928 A JP S61134928A JP 25699484 A JP25699484 A JP 25699484A JP 25699484 A JP25699484 A JP 25699484A JP S61134928 A JPS61134928 A JP S61134928A
Authority
JP
Japan
Prior art keywords
signal
circuit
output
reference voltage
comparator
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
JP25699484A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0310172B2 (enExample
Inventor
Masateru Sasaki
佐々木　政照
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP25699484A priority Critical patent/JPS61134928A/ja
Publication of JPS61134928A publication Critical patent/JPS61134928A/ja
Publication of JPH0310172B2 publication Critical patent/JPH0310172B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP25699484A 1984-12-05 1984-12-05 記録／未記録信号判定回路 Granted JPS61134928A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25699484A JPS61134928A (ja) 1984-12-05 1984-12-05 記録／未記録信号判定回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25699484A JPS61134928A (ja) 1984-12-05 1984-12-05 記録／未記録信号判定回路

Publications (2)

Publication Number Publication Date
JPS61134928A true JPS61134928A (ja) 1986-06-23
JPH0310172B2 JPH0310172B2 (enExample) 1991-02-13

Family

ID=17300239

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25699484A Granted JPS61134928A (ja) 1984-12-05 1984-12-05 記録／未記録信号判定回路

Country Status (1)

Country Link
JP (1) JPS61134928A (enExample)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62184629A (ja) * 1986-02-07 1987-08-13 Sharp Corp 光メモリ装置
JPH01189071A (ja) * 1988-01-22 1989-07-28 Sharp Corp 情報記録再生装置
JPH02187927A (ja) * 1989-01-13 1990-07-24 Matsushita Electric Ind Co Ltd 光ディスク装置
JPH02306431A (ja) * 1989-05-19 1990-12-19 Olympus Optical Co Ltd 光学的記録再生装置
JPH04322886A (ja) * 1991-04-24 1992-11-12 Furukawa Alum Co Ltd 金属板の抵抗溶接装置
US5317549A (en) * 1991-04-30 1994-05-31 Sharp Kabushiki Kaisha Information recording and reproducing apparatus
US5430702A (en) * 1994-02-16 1995-07-04 International Business Machines Corporation Calibration of readback threshold in an optical storage device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62184629A (ja) * 1986-02-07 1987-08-13 Sharp Corp 光メモリ装置
JPH01189071A (ja) * 1988-01-22 1989-07-28 Sharp Corp 情報記録再生装置
JPH02187927A (ja) * 1989-01-13 1990-07-24 Matsushita Electric Ind Co Ltd 光ディスク装置
JPH02306431A (ja) * 1989-05-19 1990-12-19 Olympus Optical Co Ltd 光学的記録再生装置
JPH04322886A (ja) * 1991-04-24 1992-11-12 Furukawa Alum Co Ltd 金属板の抵抗溶接装置
US5317549A (en) * 1991-04-30 1994-05-31 Sharp Kabushiki Kaisha Information recording and reproducing apparatus
US5430702A (en) * 1994-02-16 1995-07-04 International Business Machines Corporation Calibration of readback threshold in an optical storage device

Also Published As

Publication number Publication date
JPH0310172B2 (enExample) 1991-02-13

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term