JPH03110608U - - Google Patents
Info
- Publication number
- JPH03110608U JPH03110608U JP1724990U JP1724990U JPH03110608U JP H03110608 U JPH03110608 U JP H03110608U JP 1724990 U JP1724990 U JP 1724990U JP 1724990 U JP1724990 U JP 1724990U JP H03110608 U JPH03110608 U JP H03110608U
- Authority
- JP
- Japan
- Prior art keywords
- disk
- flexible
- flexible disk
- recording
- disk device
- 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 2
- 230000001172 regenerating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 9
Landscapes
- Digital Magnetic Recording (AREA)
Description
第1図は本考案装置の一実施例のブロツク、第
2図は第1図の装置各部の信号波形図、第3図は
ライトアンプの回路図、第4図は低域フイルタの
回路図、第5図は第4図の回路の特性図、第6図
は微分器の回路図、第7図は第6図の回路の特性
図、第8図は本考案装置の微分波形を説明するた
めの図、第9図は本考案装置の適用したシステム
のブロツク図、第10図は従来装置を説明するた
めの波形図である。
21……フリツププロツプ、22……ライトア
ンプ、23……磁気ヘツド、24……プリアンプ
、25……低域フイルタ、26……微分器、27
……ゼロボルト・コンパレータ、28……パルス
整形器、32……HDセンサ。
Fig. 1 is a block diagram of an embodiment of the device of the present invention, Fig. 2 is a signal waveform diagram of each part of the device shown in Fig. 1, Fig. 3 is a circuit diagram of a light amplifier, Fig. 4 is a circuit diagram of a low-pass filter, Fig. 5 is a characteristic diagram of the circuit of Fig. 4, Fig. 6 is a circuit diagram of a differentiator, Fig. 7 is a characteristic diagram of the circuit of Fig. 6, and Fig. 8 is for explaining the differential waveform of the device of the present invention. FIG. 9 is a block diagram of a system to which the device of the present invention is applied, and FIG. 10 is a waveform diagram for explaining a conventional device. 21...Flip prop, 22...Write amplifier, 23...Magnetic head, 24...Preamplifier, 25...Low pass filter, 26...Differentiator, 27
...Zero volt comparator, 28...Pulse shaper, 32...HD sensor.
Claims (1)
プを通して磁気ヘツドに供給して線記録密度の低
い第1のフレキシブルデイスクに書込み、該第1
のデイスクより読出した信号を低減フイルタ及び
微分器及びコンパレータを通して矩形波に再生し
、リードデータを得るフレキシブルデイスク装置
において、 装着されたデイスクが該第1のデイスクか、線
記録密度の高い第2のデイスクかを検出するセン
サを有し、 該ライトアンプ及び低減フイルタ及び微分器の
うち少なくとも一の回路の特性を該センサの検出
信号に応じて第1のデイスクと第2のデイスクと
で可変するよう構成してなるフレキシブルデイス
ク装置。 (2) 該ライトアンプは第2のデイスクの記録時
に第1のデイスクの記録時より記録電流を増加さ
せるよう構成してなる請求項(1)記載のフレキシ
ブルデイスク装置。 (3) 該低減フイルタは第2のデイスクの再生時
に第1のデイスクの記録時より遮断周波数を低下
させるよう構成してなる請求項(1)記載のフレキ
シブルデイスク装置。 (4) 該微分器は第2のデイスクの再生時に第1
のデイスクの再生時より共振点周波数を低下させ
るよう構成してなる請求項(1)記載のフレキシブ
ルデイスク装置。 (5) 該第2のデイスクが装着された際の該セン
サの検出信号を該フレキシブルデイスク装置に接
続されるホスト装置にも出力されるよう構成して
なる請求項(1)あるいは請求項(2)あるいは請求項
(3)あるいは請求項(4)記載のフレキシブルデイス
ク装置。[Claims for Utility Model Registration] (1) A rectangular wave obtained from write data is supplied to a magnetic head through a write amplifier and written to a first flexible disk with a low linear recording density;
In a flexible disk device that obtains read data by regenerating a signal read from a disk through a reduction filter, a differentiator, and a comparator into a rectangular wave, the attached disk is either the first disk or a second disk with a high linear recording density. a sensor for detecting whether the disk is a disk, and the characteristic of the circuit of at least one of the write amplifier, the reduction filter, and the differentiator is varied between the first disk and the second disk according to the detection signal of the sensor. A flexible disk device consisting of: (2) The flexible disk device according to claim (1), wherein the write amplifier is configured to increase the recording current during recording on the second disk compared to when recording on the first disk. (3) The flexible disk device according to claim 1, wherein the reduction filter is configured to lower the cutoff frequency during reproduction on the second disk compared to when recording on the first disk. (4) The differentiator is connected to the first disk when the second disk is played back.
2. The flexible disk device according to claim 1, wherein the flexible disk device is configured to lower the resonance point frequency when reproducing the disk. (5) Claim (1) or claim (2), wherein the detection signal of the sensor when the second disk is attached is also output to a host device connected to the flexible disk device. ) or claims
(3) Or the flexible disk device according to claim (4).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1724990U JPH03110608U (en) | 1990-02-22 | 1990-02-22 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1724990U JPH03110608U (en) | 1990-02-22 | 1990-02-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH03110608U true JPH03110608U (en) | 1991-11-13 |
Family
ID=31520478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1724990U Pending JPH03110608U (en) | 1990-02-22 | 1990-02-22 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03110608U (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59207068A (en) * | 1983-05-10 | 1984-11-24 | Panafacom Ltd | Floppy disc device |
JPS6087405A (en) * | 1983-10-20 | 1985-05-17 | Matsushita Electric Ind Co Ltd | Floppy disk device |
JPS60254401A (en) * | 1984-05-31 | 1985-12-16 | Toshiba Corp | Signal reproducing device |
JPS61184230A (en) * | 1985-01-31 | 1986-08-16 | ゼネラル モーターズ コーポレーシヨン | Double orifice pressure control valve |
JPS62124674A (en) * | 1985-11-25 | 1987-06-05 | Mitsubishi Electric Corp | Replacement type memory device |
JPS6489005A (en) * | 1987-09-30 | 1989-04-03 | Sony Corp | Data recorder |
-
1990
- 1990-02-22 JP JP1724990U patent/JPH03110608U/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59207068A (en) * | 1983-05-10 | 1984-11-24 | Panafacom Ltd | Floppy disc device |
JPS6087405A (en) * | 1983-10-20 | 1985-05-17 | Matsushita Electric Ind Co Ltd | Floppy disk device |
JPS60254401A (en) * | 1984-05-31 | 1985-12-16 | Toshiba Corp | Signal reproducing device |
JPS61184230A (en) * | 1985-01-31 | 1986-08-16 | ゼネラル モーターズ コーポレーシヨン | Double orifice pressure control valve |
JPS62124674A (en) * | 1985-11-25 | 1987-06-05 | Mitsubishi Electric Corp | Replacement type memory device |
JPS6489005A (en) * | 1987-09-30 | 1989-04-03 | Sony Corp | Data recorder |
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