JPH0514973B2 - - Google Patents

Info

Publication number
JPH0514973B2
JPH0514973B2 JP60270476A JP27047685A JPH0514973B2 JP H0514973 B2 JPH0514973 B2 JP H0514973B2 JP 60270476 A JP60270476 A JP 60270476A JP 27047685 A JP27047685 A JP 27047685A JP H0514973 B2 JPH0514973 B2 JP H0514973B2
Authority
JP
Japan
Prior art keywords
output
signal
low
circuit
intensity
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
JP60270476A
Other languages
English (en)
Japanese (ja)
Other versions
JPS62129943A (ja
Inventor
Hiroshi Fuji
Toshihisa Deguchi
Tsuneo Fujiwara
Shozo Kobayashi
Takashi Iwaki
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP60270476A priority Critical patent/JPS62129943A/ja
Priority to EP86114312A priority patent/EP0219124B1/fr
Priority to US06/919,672 priority patent/US4843604A/en
Priority to DE8686114312T priority patent/DE3688276T2/de
Publication of JPS62129943A publication Critical patent/JPS62129943A/ja
Priority to US07/324,458 priority patent/US4935915A/en
Publication of JPH0514973B2 publication Critical patent/JPH0514973B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Filters And Equalizers (AREA)
JP60270476A 1985-10-16 1985-11-30 サンプルホ−ルド回路 Granted JPS62129943A (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP60270476A JPS62129943A (ja) 1985-11-30 1985-11-30 サンプルホ−ルド回路
EP86114312A EP0219124B1 (fr) 1985-10-16 1986-10-16 Dispositif de commande de faisceau pour système de mémoire à disque magnéto-optique
US06/919,672 US4843604A (en) 1985-10-16 1986-10-16 Beam controller for magneto-optical disc memory system
DE8686114312T DE3688276T2 (de) 1985-10-16 1986-10-16 Steuervorrichtung des buendels fuer magnetooptisches plattenspeichersystem.
US07/324,458 US4935915A (en) 1985-10-16 1989-03-16 Beam controller for magneto-optical disc memory system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60270476A JPS62129943A (ja) 1985-11-30 1985-11-30 サンプルホ−ルド回路

Publications (2)

Publication Number Publication Date
JPS62129943A JPS62129943A (ja) 1987-06-12
JPH0514973B2 true JPH0514973B2 (fr) 1993-02-26

Family

ID=17486833

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60270476A Granted JPS62129943A (ja) 1985-10-16 1985-11-30 サンプルホ−ルド回路

Country Status (1)

Country Link
JP (1) JPS62129943A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2754735B2 (ja) * 1989-06-05 1998-05-20 松下電器産業株式会社 光学式データ記憶再生装置

Also Published As

Publication number Publication date
JPS62129943A (ja) 1987-06-12

Similar Documents

Publication Publication Date Title
US4935915A (en) Beam controller for magneto-optical disc memory system
US5260956A (en) Laser drive circuit
KR970011225B1 (ko) 레이저 다이오드 구동 장치
US4964110A (en) Apparatus for reproducing a magneto-optical disk using a shot noise reduction circuit
US4967417A (en) Laser driving device provided with two reference signal sources, and optical information recording apparatus using the same device
JP2557830B2 (ja) 光学的記録再生装置における光量制御装置
JPH0514973B2 (fr)
JPH0518185B2 (fr)
JPS62129950A (ja) 半導体レ−ザの光量制御装置
US5970026A (en) Temperature invariant, magneto-optic modulator coil driving circuit
JP2561235B2 (ja) 半導体レ−ザ駆動装置
KR19990060578A (ko) 광자기 기록매체상의 데이타 기록 방법 및 장치
JPS61192043A (ja) 半導体レ−ザ駆動装置
JPS61296539A (ja) 半導体レ−ザ駆動方法
JP2524479B2 (ja) 光記録媒体
JP2648084B2 (ja) 半導体レーザ駆動装置
JP3042093B2 (ja) レーザ駆動回路
JPH0258737A (ja) 半導体レーザ書き込み制御装置
JPH0294130A (ja) Ａｐｃ駆動回路
JP3898209B2 (ja) 光情報記録方式
JPS6310333A (ja) 光学式情報読取装置
JPH038133A (ja) 光学式データ記憶再生装置
JPH06338073A (ja) 半導体レーザパワー制御装置及びこれに用いる光ディスク
JP2561235C (fr)
JPS63263784A (ja) 半導体レ−ザ駆動装置