JPH01146314U - - Google Patents
Info
- Publication number
- JPH01146314U JPH01146314U JP3800288U JP3800288U JPH01146314U JP H01146314 U JPH01146314 U JP H01146314U JP 3800288 U JP3800288 U JP 3800288U JP 3800288 U JP3800288 U JP 3800288U JP H01146314 U JPH01146314 U JP H01146314U
- Authority
- JP
- Japan
- Prior art keywords
- tracking
- signal
- offset signal
- servo circuit
- circuit
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 2
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１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２図および第３図はその
動作を示す波形図、第４図および第５図は従来の
トラツキングサーボ回路の一例を示す構成図、第
６図はその動作を示す波形図である。
１……光デイスク、２……スピンドルモータ、
３……光ヘツド、４……送り機構、５……サーボ
回路、５１……極性反転回路、５２……サーボア
ンプ、５３……オフセツト信号発生回路、５４…
…加算回路。
Fig. 1 is a configuration diagram showing an embodiment of the tracking servo circuit of the present invention, Figs. 2 and 3 are waveform diagrams showing its operation, and Figs. 4 and 5 are diagrams of a conventional tracking servo circuit. A configuration diagram showing an example, and FIG. 6 are waveform diagrams showing the operation. 1... Optical disk, 2... Spindle motor,
3... Optical head, 4... Feeding mechanism, 5... Servo circuit, 51... Polarity inversion circuit, 52... Servo amplifier, 53... Offset signal generation circuit, 54...
...addition circuit.
Claims (1)
キングの対象を案内溝のランド部およびグルーブ
部の間で任意に変更するようにしたトラツキング
サーボ回路において、所定の大きさでしかもトラ
ツキング位置を移動させる方向に応じた極性を有
するオフセツト信号を発生するオフセツト信号発
生回路と、このオフセツト信号をトラツキングエ
ラー信号に加算する加算回路とを具備し、オフセ
ツト信号を一時的にトラツキングエラー信号に加
算した後前記変更動作を行なうようにしてなるト
ラツキングサーボ回路。 In a tracking servo circuit in which the polarity of the signal in the servo circuit is reversed to arbitrarily change the tracking target between the land part and the groove part of the guide groove, the tracking position can be moved by a predetermined size. An offset signal generation circuit that generates an offset signal having a polarity depending on the direction, and an addition circuit that adds this offset signal to the tracking error signal, and after temporarily adding the offset signal to the tracking error signal, A tracking servo circuit configured to perform the changing operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3800288U JPH01146314U (en) | 1988-03-23 | 1988-03-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3800288U JPH01146314U (en) | 1988-03-23 | 1988-03-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01146314U true JPH01146314U (en) | 1989-10-09 |
Family
ID=31264572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3800288U Pending JPH01146314U (en) | 1988-03-23 | 1988-03-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01146314U (en) |
-
1988
- 1988-03-23 JP JP3800288U patent/JPH01146314U/ja active Pending
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