JPS61283033A - 自動焦点引き込み装置 - Google Patents
自動焦点引き込み装置Info
- Publication number
- JPS61283033A JPS61283033A JP11248285A JP11248285A JPS61283033A JP S61283033 A JPS61283033 A JP S61283033A JP 11248285 A JP11248285 A JP 11248285A JP 11248285 A JP11248285 A JP 11248285A JP S61283033 A JPS61283033 A JP S61283033A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- focus
- optical pickup
- disk
- 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
- 230000003287 optical effect Effects 0.000 claims abstract description 103
- 230000010355 oscillation Effects 0.000 claims abstract description 42
- 238000001514 detection method Methods 0.000 claims description 36
- 230000007423 decrease Effects 0.000 claims description 6
- 238000013459 approach Methods 0.000 abstract description 4
- 230000000630 rising effect Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 201000009310 astigmatism Diseases 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11248285A JPS61283033A (ja) | 1985-05-24 | 1985-05-24 | 自動焦点引き込み装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11248285A JPS61283033A (ja) | 1985-05-24 | 1985-05-24 | 自動焦点引き込み装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61283033A true JPS61283033A (ja) | 1986-12-13 |
| JPH0520815B2 JPH0520815B2 (enrdf_load_html_response) | 1993-03-22 |
Family
ID=14587744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11248285A Granted JPS61283033A (ja) | 1985-05-24 | 1985-05-24 | 自動焦点引き込み装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61283033A (enrdf_load_html_response) |
-
1985
- 1985-05-24 JP JP11248285A patent/JPS61283033A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0520815B2 (enrdf_load_html_response) | 1993-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3974327A (en) | Autofocus circuit for a videodisc playback device | |
| JPS58155527A (ja) | 光デイスクプレ−ヤのフオ−カス引き込み回路 | |
| JPS5862868A (ja) | 情報再生装置における高速アドレス情報探索方式 | |
| KR100230228B1 (ko) | 광디스크 시스템의 포커싱 제어장치 | |
| JPS6120929B2 (enrdf_load_html_response) | ||
| JPS61283033A (ja) | 自動焦点引き込み装置 | |
| JP2880374B2 (ja) | 光ディスク装置のフォーカス制御装置 | |
| KR100211841B1 (ko) | 디지털 비디오 디스크 플레이어에서 슬레드 이득 자동조정장치 및 방법 | |
| JPH0736228B2 (ja) | 自動焦点引き込み制御装置 | |
| JPH09167357A (ja) | 光学式記録再生装置におけるトラックジャンプ制御装置 | |
| JP2682757B2 (ja) | 対物レンズの焦点合わせを機械により実行する方法および焦点合わせ装置 | |
| JP3462890B2 (ja) | フォーカスサーボ引き込み回路及び方法 | |
| JPS58212631A (ja) | デイスク再生装置の保護方式 | |
| KR100228800B1 (ko) | 디지털 비디오 디스크 플레이어에서 슬레드 이득 자동조정장치 및 방법 | |
| JP3193865B2 (ja) | 光学的記録媒体のフォーカス制御装置 | |
| JPS6313261B2 (enrdf_load_html_response) | ||
| JPS6089836A (ja) | デイスクレコ−ド再生装置のトラツキング制御回路 | |
| JPH07302427A (ja) | フォーカスサーボ装置 | |
| JPS61278042A (ja) | 光学的に読取り可能な記録媒体上に光ビームを投射する装置 | |
| JPS6334103Y2 (enrdf_load_html_response) | ||
| JP2627881B2 (ja) | 焦点位置制御装置 | |
| KR100230236B1 (ko) | 광 디스크의 포커싱 서보 장치 | |
| JPS58174911A (ja) | 光学式情報読み出し装置 | |
| JPH04337526A (ja) | フォーカスサーボ回路 | |
| JPH05290400A (ja) | フォーカス引込み装置 |