JPH02149171U - - Google Patents
Info
- Publication number
- JPH02149171U JPH02149171U JP5645489U JP5645489U JPH02149171U JP H02149171 U JPH02149171 U JP H02149171U JP 5645489 U JP5645489 U JP 5645489U JP 5645489 U JP5645489 U JP 5645489U JP H02149171 U JPH02149171 U JP H02149171U
- Authority
- JP
- Japan
- Prior art keywords
- track density
- outputting
- signal
- detection signal
- reflective
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Moving Of Head For Track Selection And Changing (AREA)
Description
第１図は本考案の実施例を示すフレキシブルデ
イスク駆動装置の動作フローチヤート、第２図は
本考案の実施例を示すフレキシブルデイスク駆動
装置の制御回路図、第３図はフレキシブルデイス
ク駆動装置内部のトラツク密度検出部の配置図、
第４図は本考案の実施例を示すフレキシブルデイ
スク駆動装置のタイムチヤート、第５図はトラツ
ク密度が４８ＴＰＩの場合のフローチヤート、第
６図はトラツク密度が９６ＴＰＩの場合のフロー
チヤートである。
１，２，３，８，９……抵抗、４……コントロ
ーラ、５……ドライバ、６……ステツプモータ、
７……アンドゲート、１０……シユミツト付イン
バータ、１１……反射センサ、１２……反射シー
ル付ＦＤ、１３……反射シール、２０……トラツ
ク密度検出回路。
Fig. 1 is an operation flowchart of a flexible disk drive device showing an embodiment of the present invention, Fig. 2 is a control circuit diagram of a flexible disk drive device showing an embodiment of the present invention, and Fig. 3 is an internal diagram of the flexible disk drive device. Layout diagram of track density detection unit,
FIG. 4 is a time chart of a flexible disk drive according to an embodiment of the present invention, FIG. 5 is a flow chart when the track density is 48 TPI, and FIG. 6 is a flow chart when the track density is 96 TPI. 1, 2, 3, 8, 9...Resistor, 4...Controller, 5...Driver, 6...Step motor,
7...AND gate, 10...Inverter with Schmitt, 11...Reflection sensor, 12...FD with reflective seal, 13...Reflection seal, 20...Track density detection circuit.
Claims (1)
判断する反射センサと、 (b) 該反射センサの出力によりトラツク密度検
出信号を出力する手段と、 (c) 制御装置から転送されトラツク密度を選択
するためのＴＰＩ信号及び上記トラツク密度検出
信号によりトラツクデンシテイ信号を出力する手
段と、 (d) 該トラツクデンシテイ信号によりステツプ
モータ相励磁のモードを切り換える手段を有する
ことを特徴とするフレキシブルデイスク駆動装置
。[Claims for Utility Model Registration] (a) A reflective sensor for determining the presence or absence of a reflective seal provided on a recording medium; (b) Means for outputting a track density detection signal based on the output of the reflective sensor; (c) (d) means for outputting a track density signal based on the TPI signal transferred from the control device for selecting the track density and the track density detection signal; (d) means for switching the mode of step motor phase excitation using the track density signal; A flexible disk drive device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5645489U JPH02149171U (en) | 1989-05-18 | 1989-05-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5645489U JPH02149171U (en) | 1989-05-18 | 1989-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02149171U true JPH02149171U (en) | 1990-12-19 |
Family
ID=31580291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5645489U Pending JPH02149171U (en) | 1989-05-18 | 1989-05-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02149171U (en) |
-
1989
- 1989-05-18 JP JP5645489U patent/JPH02149171U/ja active Pending
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