JPS603960U - Disc-shaped information recording carrier rotation control device for information reading device - Google Patents
Disc-shaped information recording carrier rotation control device for information reading deviceInfo
- Publication number
- JPS603960U JPS603960U JP9335683U JP9335683U JPS603960U JP S603960 U JPS603960 U JP S603960U JP 9335683 U JP9335683 U JP 9335683U JP 9335683 U JP9335683 U JP 9335683U JP S603960 U JPS603960 U JP S603960U
- Authority
- JP
- Japan
- Prior art keywords
- disc
- recording carrier
- information recording
- rotation control
- shaped
- 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
Landscapes
- Rotational Drive Of Disk (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の円盤状情報記録担体回転制御装置のブロ
ック図。第２図は本考案の一実施例の構成を示すブロッ
ク図。第３図は本考案の他の実施例の構成を示すブロッ
ク図。
１・・・ディスク、２・・・ディスク駆動モータ、３・
・・ピックアップ、４・・・信号処理回路、６および１
１・・・補償回路、７Ａ・・・選択スイッチ回路、８・
・・出力増幅器、１０・・・減衰回路、ＩＯＡ・・・可
変減衰回路。FIG. 1 is a block diagram of a conventional disk-shaped information recording carrier rotation control device. FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention. FIG. 3 is a block diagram showing the configuration of another embodiment of the present invention. 1... Disk, 2... Disk drive motor, 3...
...Pickup, 4...Signal processing circuit, 6 and 1
1... Compensation circuit, 7A... Selection switch circuit, 8.
...Output amplifier, 10...Attenuation circuit, IOA...Variable attenuation circuit.
Claims (1)
ら記録情報を読み取り前記モータを制御して円盤状情報
記録担体を定線速度で回転駆動する情報読取装置の円盤
状情報記録担体回転制御装置において、通常の情報読み
取り状態のときと情報検索状態のときで開ループ利得を
、けたは開ループ利得および時定数を変化させるように
してなることを特徴とする情報読取装置の円盤状情報記
録担体回転制御装置。A disc-shaped information recording carrier rotation control device of an information reading device that reads recorded information from a disc-shaped information recording carrier rotationally driven by a motor and controls the motor to rotationally drive the disc-shaped information recording carrier at a constant linear speed, Rotation control of a disc-shaped information recording carrier of an information reading device, characterized in that the open-loop gain is changed in a normal information reading state and in an information retrieval state, and the open-loop gain and time constant are changed by orders of magnitude. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9335683U JPS603960U (en) | 1983-06-20 | 1983-06-20 | Disc-shaped information recording carrier rotation control device for information reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9335683U JPS603960U (en) | 1983-06-20 | 1983-06-20 | Disc-shaped information recording carrier rotation control device for information reading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS603960U true JPS603960U (en) | 1985-01-12 |
Family
ID=30224132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9335683U Pending JPS603960U (en) | 1983-06-20 | 1983-06-20 | Disc-shaped information recording carrier rotation control device for information reading device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS603960U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5587348A (en) * | 1978-12-25 | 1980-07-02 | Victor Co Of Japan Ltd | Rotation control device for information recording medium disk |
-
1983
- 1983-06-20 JP JP9335683U patent/JPS603960U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5587348A (en) * | 1978-12-25 | 1980-07-02 | Victor Co Of Japan Ltd | Rotation control device for information recording medium disk |
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