JPS6155218U - - Google Patents
Info
- Publication number
- JPS6155218U JPS6155218U JP14058784U JP14058784U JPS6155218U JP S6155218 U JPS6155218 U JP S6155218U JP 14058784 U JP14058784 U JP 14058784U JP 14058784 U JP14058784 U JP 14058784U JP S6155218 U JPS6155218 U JP S6155218U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- focus
- obtaining
- electrical
- light
- 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 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
図は本考案装置の一実施例の要部ブロツク図を
示す。
３…対物レンズ、４…デイスク、６…デイテク
タ、６ａ，６ｂ，６ｃ，６ｄ…光電変換素子、９
，１０…駆動回路、Ｓａ，Ｓｂ，Ｓｃ，Ｓｄ…電
気信号、１１〜１４…加算器、１５，１６…差動
アンプ、２１，２２…加算器、２４…割算器、Ｓ
ｆｅ，Ｓｔｅ…制御信号、Ｓｄ…差信号、Ｓｔ…
和信号。
The figure shows a block diagram of essential parts of an embodiment of the device of the present invention. 3... Objective lens, 4... Disk, 6... Detector, 6a, 6b, 6c, 6d... Photoelectric conversion element, 9
, 10... Drive circuit, Sa, Sb, Sc, Sd... Electric signal, 11-14... Adder, 15, 16... Differential amplifier, 21, 22... Adder, 24... Divider, S
fe, Ste...control signal, Sd...difference signal, St...
sum signal.
Claims (1)
キング状態を制御するフオーカス或いはトラツキ
ングサーボ回路を備える光学記録再生装置におい
て、 前記デイスクからの透過或いは反射光を分割受
光してその対応する電気信号の差信号である第１
の電気信号を得る手段と、 前記電気信号の和信号から全受光量に対応する
第２の電気信号を得る手段と、 前記第２の電気信号で基準電圧を除算した除算
信号を得る手段と、 前記第１の電気信号と前記除算信号を乗算して
乗算信号を得る手段とからなり、 前記乗算信号を前記フオーカス或いはトラツキ
ングサーボ回路への制御信号とすることを特徴と
する光学記録再生装置。[Claims for Utility Model Registration] In an optical recording/reproducing device equipped with a focus or tracking servo circuit that controls the focus or tracking state of incident light on a disk, the transmitted or reflected light from the disk is received in divided light and the corresponding response is achieved. The first signal, which is the difference signal between the electrical signals
means for obtaining an electrical signal, means for obtaining a second electrical signal corresponding to the total amount of received light from the sum signal of the electrical signals, and means for obtaining a division signal obtained by dividing a reference voltage by the second electrical signal; An optical recording/reproducing apparatus comprising: means for multiplying the first electric signal by the division signal to obtain a multiplication signal, the multiplication signal being used as a control signal to the focus or tracking servo circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14058784U JPH034976Y2 (en) | 1984-09-17 | 1984-09-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14058784U JPH034976Y2 (en) | 1984-09-17 | 1984-09-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6155218U true JPS6155218U (en) | 1986-04-14 |
| JPH034976Y2 JPH034976Y2 (en) | 1991-02-08 |
Family
ID=30698942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14058784U Expired JPH034976Y2 (en) | 1984-09-17 | 1984-09-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH034976Y2 (en) |
-
1984
- 1984-09-17 JP JP14058784U patent/JPH034976Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH034976Y2 (en) | 1991-02-08 |
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