JPS62161352U - - Google Patents
Info
- Publication number
- JPS62161352U JPS62161352U JP5025886U JP5025886U JPS62161352U JP S62161352 U JPS62161352 U JP S62161352U JP 5025886 U JP5025886 U JP 5025886U JP 5025886 U JP5025886 U JP 5025886U JP S62161352 U JPS62161352 U JP S62161352U
- Authority
- JP
- Japan
- Prior art keywords
- mono
- multivibrator
- output
- index
- response
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Rotational Drive Of Disk (AREA)
Description
第１図は本考案の一実施例を示す略線図、第２
図は上記実施例の各点の信号波形を示すタイミン
グチヤートである。
ＭＭ１，ＭＭ２……第１、第２のモノマルチバ
イブレータ、ＯＲ……オア回路、Ｄ……微分回路
、ＮＯＴ……ノツト回路。
Fig. 1 is a schematic diagram showing one embodiment of the present invention;
The figure is a timing chart showing signal waveforms at each point in the above embodiment. MM1 , MM2 ...first and second mono multivibrator, OR...OR circuit, D...differentiating circuit, NOT...not circuit.
Claims (1)
ンデツクス入力パルスに応答して発生される出力
を所定時間後に反転させる第１のモノマルチバイ
ブレータと、第１のモノマルチバイブレータの出
力反転に応答してトリガーされ所定時間後に出力
を反転させる第２のモノマルチバイブレータと、
第１及び第２のモノマルチバイブレータの出力の
オア出力をとり該オア出力から所定タイミングの
インデツクス出力パルスを出力する手段と、デイ
スクの回転速度切換信号に応答して第２のモノマ
ルチバイブレータを第１のモノマルチバイブレー
タのトリガーに対し動作しないようにする手段と
を備え、上記インデツクス出力パルスを基準とし
てデイスクに対するデータの書き込みまたは読み
出しを行うように構成したことを特徴とするデイ
スク装置。 a first mono-multivibrator that inverts an output generated in response to an index input pulse from an index detection element of the disk device after a predetermined time; and a first mono-multivibrator that is triggered in response to the output inversion of the first mono-multivibrator for a predetermined time. a second mono multivibrator whose output is later inverted;
means for taking the OR output of the outputs of the first and second mono multivibrator and outputting an index output pulse at a predetermined timing from the OR output; 1. A disk device comprising means for disabling operation in response to a trigger of one mono-multivibrator, and configured to write or read data to or from a disk using the index output pulse as a reference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5025886U JPH045102Y2 (en) | 1986-04-02 | 1986-04-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5025886U JPH045102Y2 (en) | 1986-04-02 | 1986-04-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62161352U true JPS62161352U (en) | 1987-10-14 |
| JPH045102Y2 JPH045102Y2 (en) | 1992-02-13 |
Family
ID=30873453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5025886U Expired JPH045102Y2 (en) | 1986-04-02 | 1986-04-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH045102Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04281266A (en) * | 1991-02-15 | 1992-10-06 | Mitsubishi Electric Corp | Index pulse signal generating circuit |
-
1986
- 1986-04-02 JP JP5025886U patent/JPH045102Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04281266A (en) * | 1991-02-15 | 1992-10-06 | Mitsubishi Electric Corp | Index pulse signal generating circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH045102Y2 (en) | 1992-02-13 |
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