JPS61182907U - - Google Patents
Info
- Publication number
- JPS61182907U JPS61182907U JP6400285U JP6400285U JPS61182907U JP S61182907 U JPS61182907 U JP S61182907U JP 6400285 U JP6400285 U JP 6400285U JP 6400285 U JP6400285 U JP 6400285U JP S61182907 U JPS61182907 U JP S61182907U
- Authority
- JP
- Japan
- Prior art keywords
- track position
- magnetic head
- floppy disk
- detection signal
- switching circuit
- 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 5
- 230000003321 amplification Effects 0.000 claims 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims 2
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Description
第１図は、本考案の読み出し回路図、第２図は
本考案のトラツク位置検出手段の配置図、第３図
は本考案のトラツク数に対する出力特性、第４図
ａ，ｂおよびｃは、従来例の片面プロピーデイス
クの読み出し回路図と書き込み・読み出し回路の
タイミングチヤートおよびライトデータとピーク
シフトの説明図、第５図は、第４図ａに係るトラ
ツク数に対する出力特性、第６図は、従来例の両
面プロピーデイスクのヘツド切替回路を示す。
FIG. 1 is a readout circuit diagram of the present invention, FIG. 2 is a layout diagram of the track position detection means of the present invention, FIG. 3 is an output characteristic of the present invention with respect to the number of tracks, and FIG. 4 a, b, and c are A reading circuit diagram of a conventional single-sided proppy disk, a timing chart of a write/read circuit, and an explanatory diagram of write data and peak shift. FIG. 5 shows the output characteristics with respect to the number of tracks according to FIG. 4a, and FIG. , which shows a conventional head switching circuit for a double-sided proppy disk.
Claims (1)
ツド２を接触させ、磁気ヘツド２の誘起電圧をリ
ードプリアンプ３で増幅し、弁別し、パルス整形
してリードデータとして再生出力するフロツピー
デイスク装置において、磁気ヘツド２のシークと
共にｎトラツクを検知するトラツク位置検出手段
１３と、 スイツチ手段をもちトラツク位置検出手段１３
からの検知信号により作動する増幅利得切替回路
１０とを備え、トラツク位置検出手段１３からの
検知信号により増幅利得切替回路のスイツチ手段
を切替えてリードプリアンプ３の再生出力を増加
させるように構成したことを特徴とするフロツピ
ーデイスクの再生出力低下防止装置。[Claims for Utility Model Registration] A magnetic head 2 is brought into contact with one or both sides of a magnetic recording medium 1, and the induced voltage of the magnetic head 2 is amplified by a read preamplifier 3, discriminated, and pulse-shaped as read data. In a floppy disk device for reproducing and outputting, a track position detecting means 13 for detecting n tracks along with the seek of the magnetic head 2, and a track position detecting means 13 having a switch means.
and an amplification gain switching circuit 10 activated by a detection signal from the track position detection means 13, and configured to increase the reproduction output of the read preamplifier 3 by switching the switching means of the amplification gain switching circuit according to the detection signal from the track position detection means 13. A floppy disk playback output drop prevention device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6400285U JPS61182907U (en) | 1985-04-27 | 1985-04-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6400285U JPS61182907U (en) | 1985-04-27 | 1985-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61182907U true JPS61182907U (en) | 1986-11-14 |
Family
ID=30594673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6400285U Pending JPS61182907U (en) | 1985-04-27 | 1985-04-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61182907U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS574022B2 (en) * | 1976-02-13 | 1982-01-23 |
-
1985
- 1985-04-27 JP JP6400285U patent/JPS61182907U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS574022B2 (en) * | 1976-02-13 | 1982-01-23 |
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