JPS6399370U - - Google Patents
Info
- Publication number
- JPS6399370U JPS6399370U JP19466186U JP19466186U JPS6399370U JP S6399370 U JPS6399370 U JP S6399370U JP 19466186 U JP19466186 U JP 19466186U JP 19466186 U JP19466186 U JP 19466186U JP S6399370 U JPS6399370 U JP S6399370U
- Authority
- JP
- Japan
- Prior art keywords
- tracking
- drive signal
- adder
- outputs
- jump command
- 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 description 3
- 239000004065 semiconductor Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Moving Of Head For Track Selection And Changing (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Description
第１図はこの考案に係る一実施例の要部ブロツ
ク図、第２図は従来例の要部ブロツク図である。
符号説明、Ｅ：トラツキング・エラー信号、Ｓ
ｊ：ジヤンプ指令、１：光デイスク、２：トラツ
キング・アクチユエータ、３：トラツキング・サ
ーボ回路、４：ジヤンプパルス発生回路、５：サ
ンプルホールド回路、６：加算器、７：切替器。
FIG. 1 is a block diagram of a main part of an embodiment of this invention, and FIG. 2 is a block diagram of a main part of a conventional example. Code explanation, E: Tracking error signal, S
j: jump command, 1: optical disk, 2: tracking actuator, 3: tracking servo circuit, 4: jump pulse generation circuit, 5: sample hold circuit, 6: adder, 7: switch.
Claims (1)
の半導体レーザの発光ビームを光デイスク上に集
光させかつトラツキング・エラー信号を出力する
トラツキング・アクチユエータと、前記トラツキ
ング・エラー信号に基づいてトラツキング駆動信
号を出力するトラツキング・サーボ回路と、ジヤ
ンプ指令に基づいてジヤンプパルスを出力するジ
ヤンプパルス発生回路と、前記トラツキング駆動
信号を前記ジヤンプ指令に基づいてサンプルホー
ルドするサンプルホールド回路と、前記ジヤンプ
パルスとサンプルホールドされた前記トラツキン
グ駆動信号の値とを加算する加算器と、前記ジヤ
ンプ指令の“有”に対応して前記加算器からの出
力を前記トラツキング・アクチユエータに、前記
ジヤンプ指令の“無”に対応して前記トラツキン
グ・サーボ回路からのトラツキング駆動信号を前
記トラツキング・アクチユエータにそれぞれ切り
替えて供給する切替器とを備えたことを特徴とす
る光デイスク装置。 A tracking actuator that focuses an emitted beam from a semiconductor laser as a recording/reproduction light source or a reproduction-only light source onto an optical disk and outputs a tracking error signal, and outputs a tracking drive signal based on the tracking error signal. a tracking servo circuit that outputs a jump pulse based on a jump command; a sample hold circuit that samples and holds the tracking drive signal based on the jump command; an adder for adding the value of the tracking drive signal; and an adder for adding the output from the adder to the tracking actuator in response to the jump command being present; An optical disk device comprising a switch for switching and supplying a tracking drive signal from a tracking servo circuit to each of the tracking actuators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19466186U JPS6399370U (en) | 1986-12-18 | 1986-12-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19466186U JPS6399370U (en) | 1986-12-18 | 1986-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6399370U true JPS6399370U (en) | 1988-06-28 |
Family
ID=31151835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19466186U Pending JPS6399370U (en) | 1986-12-18 | 1986-12-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6399370U (en) |
-
1986
- 1986-12-18 JP JP19466186U patent/JPS6399370U/ja active Pending
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