JPS6399320U - - Google Patents
Info
- Publication number
- JPS6399320U JPS6399320U JP19240986U JP19240986U JPS6399320U JP S6399320 U JPS6399320 U JP S6399320U JP 19240986 U JP19240986 U JP 19240986U JP 19240986 U JP19240986 U JP 19240986U JP S6399320 U JPS6399320 U JP S6399320U
- Authority
- JP
- Japan
- Prior art keywords
- tracking error
- error signal
- tracking
- selection
- changes
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案の一実施例の構成を示すブロツ
ク図。第２図は従来例の構成を示すブロツク図。
１……フオトデテクタ、１１，１２および１３
……フオトダイオード、２および３……電圧―電
流変換器、４……差動増幅器、５……比較器、６
および７……電圧源、８……切替スイツチ回路、
９……スイツチ回路、１０……傷検出回路、１１
……サーボ回路、１２……アクチユエータ。
FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of a conventional example. 1...Photodetector, 1 1 , 1 2 and 1 3
... Photodiode, 2 and 3 ... Voltage-current converter, 4 ... Differential amplifier, 5 ... Comparator, 6
and 7... voltage source, 8... changeover switch circuit,
9...Switch circuit, 10...Flaw detection circuit, 11
... Servo circuit, 12 ... Actuator.
Claims (1)
らのずれ量に応じてほぼ線形的に変化するトラツ
キングエラー信号を発生するトラツキングエラー
信号発生手段と、予め設定された設定電圧を前記
トラツキングエラー信号発生手段から出力された
トラツキングエラー信号に基づいて選択する選択
手段とを備え、前記選択手段により選択された設
定電圧をトラツキングエラー制御用の信号とした
ことを特徴とする光ピツクアツプのトラツキング
サーボ回路。 tracking error signal generating means for generating a tracking error signal that changes approximately linearly according to the amount of deviation from the control target based on changes in the optical diffraction pattern; Tracking for an optical pickup, comprising: selection means for making a selection based on a tracking error signal output from the generation means, and a set voltage selected by the selection means is used as a signal for tracking error control. servo circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19240986U JPS6399320U (en) | 1986-12-16 | 1986-12-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19240986U JPS6399320U (en) | 1986-12-16 | 1986-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6399320U true JPS6399320U (en) | 1988-06-28 |
Family
ID=31147462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19240986U Pending JPS6399320U (en) | 1986-12-16 | 1986-12-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6399320U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6044223B2 (en) * | 1977-09-12 | 1985-10-02 | 帝人株式会社 | Yarn take-off device |
-
1986
- 1986-12-16 JP JP19240986U patent/JPS6399320U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6044223B2 (en) * | 1977-09-12 | 1985-10-02 | 帝人株式会社 | Yarn take-off device |
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