JPS59138026U - 焦点制御範囲識別回路 - Google Patents

焦点制御範囲識別回路

Info

Publication number
JPS59138026U
JPS59138026U JP3136483U JP3136483U JPS59138026U JP S59138026 U JPS59138026 U JP S59138026U JP 3136483 U JP3136483 U JP 3136483U JP 3136483 U JP3136483 U JP 3136483U JP S59138026 U JPS59138026 U JP S59138026U
Authority
JP
Japan
Prior art keywords
focus control
output
objective lens
waveform shaping
control range
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
JP3136483U
Other languages
English (en)
Japanese (ja)
Other versions
JPS6346902Y2 (cs
Inventor
外山　建夫
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP3136483U priority Critical patent/JPS59138026U/ja
Publication of JPS59138026U publication Critical patent/JPS59138026U/ja
Application granted granted Critical
Publication of JPS6346902Y2 publication Critical patent/JPS6346902Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
JP3136483U 1983-03-03 1983-03-03 焦点制御範囲識別回路 Granted JPS59138026U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3136483U JPS59138026U (ja) 1983-03-03 1983-03-03 焦点制御範囲識別回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3136483U JPS59138026U (ja) 1983-03-03 1983-03-03 焦点制御範囲識別回路

Publications (2)

Publication Number Publication Date
JPS59138026U true JPS59138026U (ja) 1984-09-14
JPS6346902Y2 JPS6346902Y2 (cs) 1988-12-05

Family

ID=30162213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3136483U Granted JPS59138026U (ja) 1983-03-03 1983-03-03 焦点制御範囲識別回路

Country Status (1)

Country Link
JP (1) JPS59138026U (cs)

Also Published As

Publication number Publication date
JPS6346902Y2 (cs) 1988-12-05

Similar Documents

Publication Publication Date Title
JPS5794906A (en) Optical magnetic recorder
JPS59138026U (ja) 焦点制御範囲識別回路
EP0354754A3 (en) Method and apparatus for adjusting target position for focusing of light beam
JPS5963829U (ja) 情報再生装置
JPS6074220U (ja) 光学的情報再生装置の制御装置
JPS6122092U (ja) レ−ザ光照射装置
JPS58190713U (ja) パルスモ−タ−駆動回路
JPS5966925U (ja) 光学式ピツクアツプ装置
JPH0229278B2 (cs)
JPS58131435U (ja) 光学的記録再生装置における焦点調整用レンズ
JPS59107728U (ja) 光学式ピツクアツプ装置
JPS59187221U (ja) デイスク再生装置における自動利得制御回路
JPS58163030U (ja) 情報再生装置
JPS60123766U (ja) 記録情報再生装置におけるドロツプアウト検出回路
JPS60173134U (ja) 光学式ピツクアツプ装置
JPS6023933U (ja) 情報記録再生装置のピツクアツプ
JPS58190841U (ja) 記録情報読取装置のフオ−カスレンズ移動制御装置
JPS59164937U (ja) トラツキングサ−ボ装置
JPS5992438U (ja) 光学系ピツクアツプ
JPS6184174A (ja) ビデオデイスク再生装置
JPS5999221U (ja) 光偏向装置の制御回路
JPS59104332U (ja) 情報検出点と記録トラツクとの相対位置情報信号発生装置
JPS6077022U (ja) 焦点誤差検出装置
JPS6314401B2 (cs)
JPS6077073U (ja) 記録情報再生装置のドロツプアウト補償回路