JPS62175421U - - Google Patents
Info
- Publication number
- JPS62175421U JPS62175421U JP6160186U JP6160186U JPS62175421U JP S62175421 U JPS62175421 U JP S62175421U JP 6160186 U JP6160186 U JP 6160186U JP 6160186 U JP6160186 U JP 6160186U JP S62175421 U JPS62175421 U JP S62175421U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- tracking
- drive
- changeover switch
- 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
- 238000010586 diagram Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Description
第１図および第２図は本考案のトラツキングサ
ーボ回路の一実施例を示す構成図、第３図はその
動作状態を示す波形図、第４図は従来のトラツキ
ングサーボ回路における動作状態を示す波形図で
ある。
１…増幅器、２…位相補償回路、３…パワー増
幅器、４…発振回路、５…シーケンス回路、６…
切換えスイツチ、７…マイクロプロセツサ、５１
…比較回路、５２…インバータ、５３，５４…Ｆ
Ｆ回路、５５…アンド回路。
1 and 2 are block diagrams showing an embodiment of the tracking servo circuit of the present invention, FIG. 3 is a waveform diagram showing its operating state, and FIG. 4 shows the operating state of a conventional tracking servo circuit. FIG. DESCRIPTION OF SYMBOLS 1...Amplifier, 2...Phase compensation circuit, 3...Power amplifier, 4...Oscillation circuit, 5...Sequence circuit, 6...
Changeover switch, 7...Microprocessor, 51
...Comparison circuit, 52...Inverter, 53, 54...F
F circuit, 55...AND circuit.
Claims (1)
アクチユエータを強制的に振動させる駆動手段と
、トラツキングエラー信号の極性を判別する比較
回路と、サーボ動作における帰還信号と前記駆動
手段により発生される駆動信号とを選択的にトラ
ツキングアクチユエータに供給する切換えスイツ
チと、前記駆動信号の位相と前記比較回路におけ
る出力状態の変化に応じて前記切換えスイツチの
接続状態を制御するシーケンス回路とを具備して
なるトラツキングサーボ回路。 A drive means for forcibly vibrating the tracking actuator in response to a pull-in command for servo operation, a comparison circuit for determining the polarity of a tracking error signal, and a feedback signal in servo operation and the drive generated by the drive means. a changeover switch that selectively supplies the signal to the tracking actuator; and a sequence circuit that controls the connection state of the changeover switch according to the phase of the drive signal and changes in the output state of the comparison circuit. Tracking servo circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6160186U JPH0535452Y2 (en) | 1986-04-23 | 1986-04-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6160186U JPH0535452Y2 (en) | 1986-04-23 | 1986-04-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62175421U true JPS62175421U (en) | 1987-11-07 |
| JPH0535452Y2 JPH0535452Y2 (en) | 1993-09-08 |
Family
ID=30895083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6160186U Expired - Lifetime JPH0535452Y2 (en) | 1986-04-23 | 1986-04-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0535452Y2 (en) |
-
1986
- 1986-04-23 JP JP6160186U patent/JPH0535452Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0535452Y2 (en) | 1993-09-08 |