JPS63114409U - - Google Patents
Info
- Publication number
- JPS63114409U JPS63114409U JP445887U JP445887U JPS63114409U JP S63114409 U JPS63114409 U JP S63114409U JP 445887 U JP445887 U JP 445887U JP 445887 U JP445887 U JP 445887U JP S63114409 U JPS63114409 U JP S63114409U
- Authority
- JP
- Japan
- Prior art keywords
- focus
- objective lens
- signal
- focus servo
- control device
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 6
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987004458U JPH0636495Y2 (ja) | 1987-01-16 | 1987-01-16 | フォーカスサーボ制御装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987004458U JPH0636495Y2 (ja) | 1987-01-16 | 1987-01-16 | フォーカスサーボ制御装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63114409U true JPS63114409U (sl) | 1988-07-23 |
JPH0636495Y2 JPH0636495Y2 (ja) | 1994-09-21 |
Family
ID=30785139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987004458U Expired - Lifetime JPH0636495Y2 (ja) | 1987-01-16 | 1987-01-16 | フォーカスサーボ制御装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0636495Y2 (sl) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02195517A (ja) * | 1989-01-25 | 1990-08-02 | Canon Inc | 光学的情報記録再生装置 |
JPH05109085A (ja) * | 1991-10-16 | 1993-04-30 | Mitsubishi Electric Corp | フオーカス制御装置 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5919246A (ja) * | 1982-07-24 | 1984-01-31 | Pioneer Electronic Corp | 光学式情報読取装置におけるフオ−カスサ−ボ引込装置 |
-
1987
- 1987-01-16 JP JP1987004458U patent/JPH0636495Y2/ja not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5919246A (ja) * | 1982-07-24 | 1984-01-31 | Pioneer Electronic Corp | 光学式情報読取装置におけるフオ−カスサ−ボ引込装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02195517A (ja) * | 1989-01-25 | 1990-08-02 | Canon Inc | 光学的情報記録再生装置 |
JPH05109085A (ja) * | 1991-10-16 | 1993-04-30 | Mitsubishi Electric Corp | フオーカス制御装置 |
Also Published As
Publication number | Publication date |
---|---|
JPH0636495Y2 (ja) | 1994-09-21 |
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