JPH02105204U - - Google Patents
Info
- Publication number
- JPH02105204U JPH02105204U JP1421489U JP1421489U JPH02105204U JP H02105204 U JPH02105204 U JP H02105204U JP 1421489 U JP1421489 U JP 1421489U JP 1421489 U JP1421489 U JP 1421489U JP H02105204 U JPH02105204 U JP H02105204U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic recording
- recording medium
- band
- head
- magnetic
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
Description
第１図は本考案に係わる磁気記録再生装置の電
磁変換系の電気的構成を示す概略ブロツク線図、
第２図は記録媒体に記録された信号の伝送特性の
一例を示す曲線図、第３図はＯＮ／ＯＦＦスイツ
チの一例を示す図、第４図は他の実施例を示す概
略ブロツク線図、第５図は記録媒体に記録された
信号の一般的な伝送特性を示す曲線図である。
１……磁気ヘツド、２……ロータリートランス
、３……ヘツドアンプ、４……容量素子、５……
ＯＮ／ＯＦＦスイツチ、６，２２……帯域判別回
路、２１……可変容量ダイオード、２３……直流
電源。
FIG. 1 is a schematic block diagram showing the electrical configuration of the electromagnetic conversion system of the magnetic recording and reproducing device according to the present invention;
FIG. 2 is a curve diagram showing an example of the transmission characteristics of a signal recorded on a recording medium, FIG. 3 is a diagram showing an example of an ON/OFF switch, and FIG. 4 is a schematic block diagram showing another embodiment. FIG. 5 is a curve diagram showing general transmission characteristics of signals recorded on a recording medium. 1... Magnetic head, 2... Rotary transformer, 3... Head amplifier, 4... Capacitive element, 5...
ON/OFF switch, 6, 22...band discrimination circuit, 21...variable capacitance diode, 23...DC power supply.
Claims (1)
ヘツドと、該磁気ヘツドによつて再生された信号
を適当なレベルに変換するロータリートランスと
、該ロータリートランスによつて変換された信号
をその後の信号処理系に必要なレベルまで増幅す
るヘツドアンプとを備えた電磁変換系を有する磁
気記録再生装置において、 前記磁気記録媒体から再生された信号の帯域を
判別する帯域判別回路と、 前記ヘツドアンプの前段に付加された容量素子
と、 前記帯域判別回路の判別結果に基き、前記容量
素子の前記電磁変換系への接続のＯＮ／ＯＦＦを
制御するスイツチング素子とを備え、 前記電磁変換系の伝送特性が、前記磁気記録媒
体から再生された信号の帯域に応じて変化するよ
うになされたことを特徴とする磁気記録再生装置
。[Claims for Utility Model Registration] A magnetic head that reproduces signals recorded on a magnetic recording medium, a rotary transformer that converts the signals reproduced by the magnetic head to an appropriate level, and a magnetic head that reproduces signals recorded on a magnetic recording medium; In a magnetic recording and reproducing apparatus having an electromagnetic conversion system and a head amplifier that amplifies the converted signal to a level required for a subsequent signal processing system, a band discrimination circuit that discriminates the band of the signal reproduced from the magnetic recording medium. and a capacitive element added to the front stage of the head amplifier, and a switching element that controls ON/OFF of the connection of the capacitive element to the electromagnetic conversion system based on the discrimination result of the band discrimination circuit, 1. A magnetic recording and reproducing apparatus, wherein the transmission characteristics of the conversion system change according to the band of the signal reproduced from the magnetic recording medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1421489U JPH02105204U (en) | 1989-02-09 | 1989-02-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1421489U JPH02105204U (en) | 1989-02-09 | 1989-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02105204U true JPH02105204U (en) | 1990-08-21 |
Family
ID=31225215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1421489U Pending JPH02105204U (en) | 1989-02-09 | 1989-02-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02105204U (en) |
-
1989
- 1989-02-09 JP JP1421489U patent/JPH02105204U/ja active Pending
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