JPS58131466U - Digital disk rotation control device - Google Patents
Digital disk rotation control deviceInfo
- Publication number
- JPS58131466U JPS58131466U JP1982022411U JP2241182U JPS58131466U JP S58131466 U JPS58131466 U JP S58131466U JP 1982022411 U JP1982022411 U JP 1982022411U JP 2241182 U JP2241182 U JP 2241182U JP S58131466 U JPS58131466 U JP S58131466U
- Authority
- JP
- Japan
- Prior art keywords
- disk rotation
- control device
- digital
- rotation control
- disk
- 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)
- Control Of Electric Motors In General (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図は従来例を示すブロック図、第２図はその動作説
明に供する図、第３図は本考案の一実施例を示すブロッ
ク図、第４図はその動作説明に供する図である。
図中、３はディスク回転駆動系、４は検出ヘッド、７は
位相比較器、１１はレベル変化点を検出する検出器であ
る。FIG. 1 is a block diagram showing a conventional example, FIG. 2 is a diagram used to explain its operation, FIG. 3 is a block diagram showing an embodiment of the present invention, and FIG. 4 is a diagram used to explain its operation. In the figure, 3 is a disk rotation drive system, 4 is a detection head, 7 is a phase comparator, and 11 is a detector for detecting a level change point.
Claims (1)
記録再生するディジタルディスクシステムにおいて、再
生されたディジタル信号の各レベル変化点を示すパルス
を発生する手段と、上記ディジタル信号の最小パルス間
隔の制御目標値に比例した・ 周期を有する基準信号を
発生する手段と、上記基準信号と前記レベル変化点を示
すパルスを位相比較する手段と、該位相比較する手段の
出力を平滑する手段とを備え、該平滑手段の出力を上記
ディスクの回転駆動手段にフィードバック制御して、デ
ィスクの回転制御を行うことを特徴とするディジタルデ
ィスクの回転制御装置。In a digital disk system for recording and reproducing by performing loop coding each time an original signal is converted, means for generating pulses indicating each level change point of a reproduced digital signal, and controlling the minimum pulse interval of the digital signal. comprising means for generating a reference signal having a period proportional to the target value, means for comparing the phases of the reference signal and the pulse indicating the level change point, and means for smoothing the output of the phase comparing means, A digital disk rotation control device characterized in that the output of the smoothing means is feedback-controlled to the disk rotation drive means to control the rotation of the disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982022411U JPS58131466U (en) | 1982-02-19 | 1982-02-19 | Digital disk rotation control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982022411U JPS58131466U (en) | 1982-02-19 | 1982-02-19 | Digital disk rotation control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58131466U true JPS58131466U (en) | 1983-09-05 |
Family
ID=30034496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982022411U Pending JPS58131466U (en) | 1982-02-19 | 1982-02-19 | Digital disk rotation control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58131466U (en) |
-
1982
- 1982-02-19 JP JP1982022411U patent/JPS58131466U/en active Pending
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