JPH0341287Y2 - - Google Patents
Info
- Publication number
- JPH0341287Y2 JPH0341287Y2 JP1981010967U JP1096781U JPH0341287Y2 JP H0341287 Y2 JPH0341287 Y2 JP H0341287Y2 JP 1981010967 U JP1981010967 U JP 1981010967U JP 1096781 U JP1096781 U JP 1096781U JP H0341287 Y2 JPH0341287 Y2 JP H0341287Y2
- Authority
- JP
- Japan
- Prior art keywords
- servo
- signal
- output signal
- output
- area
- 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
Links
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
- Control Of Position Or Direction (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981010967U JPH0341287Y2 (pm) | 1981-01-30 | 1981-01-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981010967U JPH0341287Y2 (pm) | 1981-01-30 | 1981-01-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57127207U JPS57127207U (pm) | 1982-08-07 |
| JPH0341287Y2 true JPH0341287Y2 (pm) | 1991-08-30 |
Family
ID=29809112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981010967U Expired JPH0341287Y2 (pm) | 1981-01-30 | 1981-01-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0341287Y2 (pm) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH589321A5 (pm) * | 1973-01-17 | 1977-06-30 | Zumbach Electronic Automatic | |
| JPS5514581A (en) * | 1978-07-19 | 1980-02-01 | Pioneer Video Corp | In-focus detection unit |
-
1981
- 1981-01-30 JP JP1981010967U patent/JPH0341287Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57127207U (pm) | 1982-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6331217Y2 (pm) | ||
| US4544837A (en) | Focus servo control device for an optical system having an initial focus locking operation | |
| GB2143973A (en) | Optical pickup apparatus for recorded information | |
| JPH0341287Y2 (pm) | ||
| GB2027881A (en) | In-focus detecting device | |
| US6674694B1 (en) | Light-pickup device applied to a recording and/or reproduction device for an optical disk inluding a detection circuit that generates a focus zero cross signal | |
| JPH0335432A (ja) | フォーカスサーボ回路 | |
| KR0176884B1 (ko) | 광디스크 판별방법 | |
| JP2958931B2 (ja) | ディスク再生装置 | |
| JPH0736228B2 (ja) | 自動焦点引き込み制御装置 | |
| JPH056572Y2 (pm) | ||
| JPS5827888B2 (ja) | 光ビ−ムのフオ−カスサ−ボ方式 | |
| JP2703198B2 (ja) | 光学ディスク再生装置 | |
| JPS58200473A (ja) | 情報読取装置 | |
| KR100230236B1 (ko) | 광 디스크의 포커싱 서보 장치 | |
| JPH0614253Y2 (ja) | 光学ディスクプレーヤ | |
| SU1113847A1 (ru) | Устройство слежени за информационной дорожкой носител оптической записи | |
| JP3086031B2 (ja) | フォーカス制御方法 | |
| JP3034893B2 (ja) | 情報記録装置 | |
| JPH0473221B2 (pm) | ||
| JPS6313261B2 (pm) | ||
| JPS6196529A (ja) | トラツキングサ−ボ回路 | |
| JPS63316682A (ja) | スピンドルモ−タの停止制御装置 | |
| JPS61198432A (ja) | フオ−カス制御装置 | |
| JP2000155971A (ja) | 光学的情報記録再生装置の光源発光パワー制御回路 |