JPS62161345U

JPS62161345U -

Info

Publication number: JPS62161345U
Application number: JP4788186U
Authority: JP
Priority date: 1986-03-31
Filing date: 1986-03-31
Publication date: 1987-10-14

Description

[Brief explanation of the drawing]

図面は本発明のフロツピデイスク駆動装置の一
実施例を示し、第１図は装置全体を示す正面図、
第２図は第１図の平面図、第３図は動作制御回路
ユニツトの一例を示すブロツク図、第４図は本実
施例によるフロツピデイスク駆動状態を示すフロ
ーチヤート図、第５図は制御回路の一例を示す論
理回路図、第６図は第５図のカウンタによる各種
出力を示す線図である。１……フロツピデイスク、３……スピンドルモ
ータ、４……磁気ヘツド、７……ステツピングモ
ータ、９……動作制御回路ユニツト、１１……ス
ピンドルモータ駆動回路、１２……制御回路、１
３……タイマ付判断回路、１４……本来機能実行
回路、１６……インデツクス信号検出回路、１７
……特殊シーク回路、１８……ステツピングモー
タ駆動回路。 The drawings show an embodiment of the floppy disk drive device of the present invention, and FIG. 1 is a front view showing the entire device;
2 is a plan view of FIG. 1, FIG. 3 is a block diagram showing an example of the operation control circuit unit, FIG. 4 is a flowchart showing the floppy disk drive state according to this embodiment, and FIG. 5 is a diagram of the control circuit. FIG. 6, which is a logic circuit diagram showing an example, is a diagram showing various outputs from the counter of FIG. 5. DESCRIPTION OF SYMBOLS 1...Floppy disk, 3...Spindle motor, 4...Magnetic head, 7...Stepping motor, 9...Operation control circuit unit, 11...Spindle motor drive circuit, 12...Control circuit, 1
3... Judgment circuit with timer, 14... Original function execution circuit, 16... Index signal detection circuit, 17
...Special seek circuit, 18...Stepping motor drive circuit.

Claims

[Claims for Utility Model Registration] (1) A spindle motor that rotates a floppy disk, a stepping motor that reciprocates a magnetic head in the radial direction of the floppy disk, and a stepper motor that reciprocates a magnetic head in the radial direction of the floppy disk, and when a certain period of time has elapsed since a rotation command for the spindle motor was received. When an index signal indicating that the floppy disk is in a rotating state is not detected, the spindle motor is operated to reciprocate the magnetic head by a predetermined length to release the attraction between the floppy disk and the magnetic head. A floppy disk drive device featuring: (2) Place the magnetic head against the floppy disk.
A floppy disk drive device according to claim (1) of the utility model registration claim, characterized in that the floppy disk is first moved inward in the radial direction of the floppy disk and then moved radially outward of the floppy disk. .