JPH0439859U - - Google Patents
Info
- Publication number
- JPH0439859U JPH0439859U JP8113590U JP8113590U JPH0439859U JP H0439859 U JPH0439859 U JP H0439859U JP 8113590 U JP8113590 U JP 8113590U JP 8113590 U JP8113590 U JP 8113590U JP H0439859 U JPH0439859 U JP H0439859U
- Authority
- JP
- Japan
- Prior art keywords
- output
- signal
- output signal
- whose
- gate
- 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
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Description
第１図は本考案の実施例のブロツク図、第２図
は各部信号のタイムチヤートである。
１１……基準クロツクパルス発振器、１２……
アンドゲート、１３……単安定マルチバイブレー
タ、１４……オアゲート、１５……ｎ進カウンタ
、１６……出力選択回路、１７……単安定マルチ
バイブレータ、１８……可変時定数設定回路、１
９……Ｄ型フリツプフロツプ、２０……インデツ
クス検出器出力信号、２１……カウンタ出力がｎ
、２２……カウンタ出力ｍ、２３……デイスク回
転速度信号、２４……インデツクス信号。
FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a time chart of signals of various parts. 11... Reference clock pulse oscillator, 12...
AND gate, 13... Monostable multivibrator, 14... OR gate, 15... N-ary counter, 16... Output selection circuit, 17... Monostable multivibrator, 18... Variable time constant setting circuit, 1
9...D-type flip-flop, 20...index detector output signal, 21...counter output is n
, 22... Counter output m, 23... Disk rotation speed signal, 24... Index signal.
Claims (1)
ロツクパルス発振器１１の出力パルスとインデツ
クス検出器の出力信号を入力とするアンドゲート
１２と、その出力信号を入力信号とする時定数設
定回路１８を備えた単安定マルチバイブレータ１
３と、その出力信号と前記アンドゲート１２の出
力信号を入力信号とするｎ進カウンタ１５とから
成るタイヤー回路Ａと、 前記ｎ進カウンタ１５のカウンタ値をデイスク
回転速度信号によつて選択する出力選択回路１６
と、 前記出力選択回路１６の出力を入力信号として
所定のパルス巾のインデツクス信号を送出する単
安定マルチバイブレータから成るパルス巾設定回
路 とから成るフロツピーデイスクドライブ装置にお
けるインデツクス位置調整回路。[Claims for Utility Model Registration] A reference clock pulse oscillator 11, an AND gate 12 whose inputs are the output pulses of the reference clock pulse oscillator 11 and an output signal of an index detector, and a time constant setting circuit whose output signal is its input signal. Monostable multivibrator with 18 1
3, an n-ary counter 15 whose input signals are the output signal thereof and the output signal of the AND gate 12, and an output for selecting the counter value of the n-ary counter 15 based on the disk rotation speed signal. Selection circuit 16
and a pulse width setting circuit comprising a monostable multivibrator that sends out an index signal of a predetermined pulse width using the output of the output selection circuit 16 as an input signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990081135U JPH0731411Y2 (en) | 1990-08-01 | 1990-08-01 | Index position adjustment circuit in floppy disk drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990081135U JPH0731411Y2 (en) | 1990-08-01 | 1990-08-01 | Index position adjustment circuit in floppy disk drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0439859U true JPH0439859U (en) | 1992-04-03 |
| JPH0731411Y2 JPH0731411Y2 (en) | 1995-07-19 |
Family
ID=31626804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990081135U Expired - Lifetime JPH0731411Y2 (en) | 1990-08-01 | 1990-08-01 | Index position adjustment circuit in floppy disk drive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0731411Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0742372U (en) * | 1993-12-28 | 1995-08-04 | ナストーア株式会社 | Vehicle guard fence |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS639067A (en) * | 1986-06-30 | 1988-01-14 | Seiko Epson Corp | Index signal conditioning device |
| JPS6314373A (en) * | 1986-07-07 | 1988-01-21 | Eishitsuku Technol Kk | Index device for disk recording medium |
-
1990
- 1990-08-01 JP JP1990081135U patent/JPH0731411Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS639067A (en) * | 1986-06-30 | 1988-01-14 | Seiko Epson Corp | Index signal conditioning device |
| JPS6314373A (en) * | 1986-07-07 | 1988-01-21 | Eishitsuku Technol Kk | Index device for disk recording medium |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0742372U (en) * | 1993-12-28 | 1995-08-04 | ナストーア株式会社 | Vehicle guard fence |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0731411Y2 (en) | 1995-07-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |