JPS62117764U - - Google Patents
Info
- Publication number
- JPS62117764U JPS62117764U JP413386U JP413386U JPS62117764U JP S62117764 U JPS62117764 U JP S62117764U JP 413386 U JP413386 U JP 413386U JP 413386 U JP413386 U JP 413386U JP S62117764 U JPS62117764 U JP S62117764U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- jump
- tracking
- pulse
- track
- 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 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Moving Of Head For Track Selection And Changing (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クジヤン
プ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図および第５図は従来
のトラツクジヤンプ回路の一例を示す構成図、第
６図はその動作状態を示す波形図である。
１…位相補償回路、２…増幅器、３…パワー増
幅器、４…ジヤンプパルス発生回路、４２，４３
，４４…ＦＦ回路、５…シーケンサ、６…比較器
、ＳＷ…切換えスイツチ。
Figures 1 and 2 are block diagrams showing an embodiment of the track jump circuit of the present invention, Figure 3 is a waveform diagram showing its operating state, and Figures 4 and 5 are examples of conventional track jump circuits. FIG. 6 is a waveform diagram showing its operating state. DESCRIPTION OF SYMBOLS 1... Phase compensation circuit, 2... Amplifier, 3... Power amplifier, 4... Jump pulse generation circuit, 42, 43
, 44... FF circuit, 5... Sequencer, 6... Comparator, SW... Changeover switch.
Claims (1)
読出し装置に対してジヤンプパルスを印加しその
トラツキング位置を隣りのトラツクに移動させる
トラツクジヤンプ回路において、トラツクジヤン
プ動作時に前記トラツキングサーボ回路の帰還回
路を遮断するとともにトラツキングアクチユエー
タにジヤンプパルスを印加する切換えスイツチと
、前記トラツキングサーボ回路において発生され
るトラツキングエラー信号の極性または零クロス
を検出する比較器と、この比較器の出力状態に応
じて前記ジヤンプパルスのパルス幅を制御すると
ともに前記切換えスイツチの切換えをも制御する
ジヤンプパルス発生回路とを具備してなるトラツ
クジヤンプ回路。 In a track jump circuit that applies a jump pulse to an optical disk readout device having a tracking servo circuit to move the tracking position to an adjacent track, the feedback circuit of the tracking servo circuit is cut off during the track jump operation, and a changeover switch that applies a jump pulse to the tracking actuator; a comparator that detects the polarity or zero cross of the tracking error signal generated in the tracking servo circuit; A track jump circuit comprising a jump pulse generation circuit that controls the pulse width of the jump pulse and also controls switching of the changeover switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP413386U JPS62117764U (en) | 1986-01-16 | 1986-01-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP413386U JPS62117764U (en) | 1986-01-16 | 1986-01-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62117764U true JPS62117764U (en) | 1987-07-27 |
Family
ID=30784527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP413386U Pending JPS62117764U (en) | 1986-01-16 | 1986-01-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62117764U (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5599889A (en) * | 1979-01-05 | 1980-07-30 | Pioneer Video Corp | Tracking control unit in information reader |
| JPS58200472A (en) * | 1982-05-19 | 1983-11-22 | Hitachi Ltd | Tracking controller of recorded information reproducer |
| JPS59116970A (en) * | 1982-12-23 | 1984-07-06 | Olympus Optical Co Ltd | Track jump control device |
| JPS6032134A (en) * | 1983-07-30 | 1985-02-19 | Ricoh Co Ltd | Tracking controller |
| JPS60224157A (en) * | 1984-04-20 | 1985-11-08 | Hitachi Ltd | Tracking servo controller |
| JPS61977A (en) * | 1984-06-13 | 1986-01-06 | Pioneer Electronic Corp | Tracking servo device |
-
1986
- 1986-01-16 JP JP413386U patent/JPS62117764U/ja active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5599889A (en) * | 1979-01-05 | 1980-07-30 | Pioneer Video Corp | Tracking control unit in information reader |
| JPS58200472A (en) * | 1982-05-19 | 1983-11-22 | Hitachi Ltd | Tracking controller of recorded information reproducer |
| JPS59116970A (en) * | 1982-12-23 | 1984-07-06 | Olympus Optical Co Ltd | Track jump control device |
| JPS6032134A (en) * | 1983-07-30 | 1985-02-19 | Ricoh Co Ltd | Tracking controller |
| JPS60224157A (en) * | 1984-04-20 | 1985-11-08 | Hitachi Ltd | Tracking servo controller |
| JPS61977A (en) * | 1984-06-13 | 1986-01-06 | Pioneer Electronic Corp | Tracking servo device |