JPS58222403A - Magnetic recording and reproducing system - Google Patents
Magnetic recording and reproducing systemInfo
- Publication number
- JPS58222403A JPS58222403A JP10472482A JP10472482A JPS58222403A JP S58222403 A JPS58222403 A JP S58222403A JP 10472482 A JP10472482 A JP 10472482A JP 10472482 A JP10472482 A JP 10472482A JP S58222403 A JPS58222403 A JP S58222403A
- Authority
- JP
- Japan
- Prior art keywords
- coils
- magnetic recording
- recording
- magnetic
- electric current
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Magnetic Heads (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は主磁極と同一トラック上にリング型ヘッドを有
する磁気記録再生方式に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic recording/reproducing system having a ring-shaped head on the same track as the main pole.
従来、主磁極とリング型へ−ノドを備えた垂直磁気記鋒
再生へ・・ドは第１図に示すどとく、主磁極１と補助磁
極２に巻かれたコイル５から成る垂直磁気記録ヘッドと
再生コイル６が巻かれたリング型ヘッド５を設けている
。垂直磁気媒体４に補助磁極２のコイル３ＶＣ電流を流
すことにより磁界を発生させ、この磁界が主磁極１で集
中されることにより垂直磁気記録を行なう。再生時には
リング型ヘッド５のギャップ７で検出された磁界の変化
をコイル６で電流に変換すふことによって電気信号をし
て処理を行なら。このため垂直磁気配録ヘッドとして主
磁極１と補助磁極２が必要となるので構造的に複線にな
り、価格面、＃１人立て部品数の増加になる。Conventionally, a perpendicular magnetic recording head equipped with a main magnetic pole and a ring-shaped groove is used as shown in FIG. A ring-shaped head 5 around which a reproduction coil 6 is wound is provided. A magnetic field is generated by passing a VC current through the coil 3 of the auxiliary magnetic pole 2 through the perpendicular magnetic medium 4, and this magnetic field is concentrated by the main magnetic pole 1 to perform perpendicular magnetic recording. During reproduction, changes in the magnetic field detected in the gap 7 of the ring-shaped head 5 are converted into electric current by the coil 6, and processed as an electrical signal. For this reason, the main magnetic pole 1 and the auxiliary magnetic pole 2 are required as a perpendicular magnetic recording head, resulting in a double track structure, which increases the cost and the number of parts for #1.
本発明けかかる欠点金除去するためになされたものであ
る。The present invention has been made to eliminate such drawbacks.
本発明の磁気記録再生方式を第２．１ｉｉ２Ｔ、第３図
について説明すると、８．９及び１０け第１図で説明し
たと同様なリング型へリド、コイル汲びギ°ヤップであ
る。−イル９に電流金波すとリング型へラド８のギャッ
プ１０Ｖｃ磁界１２が発生し、磁気配録媒体１１［磁り
配録が行なえる。この際の磁気記録は長手記録と呼ばれ
垂直磁気記録と比較すると高密度記録に関し、てけ磁気
配録媒体が適していない。このため、第３図に示すごと
く、主磁極１３とリング型ヘッド１４Ｖｃ独立した２個
のコイル１５及び１６を設けることにより、コイル１５
及びコイル１６Ｖｃ適正な電流を流すことでギャップ１
７に第２図で説明した長手記録を行なう磁界を発生シせ
ずに、主磁極１３に磁界を集中略せることで垂直磁気記
録媒体１８ＶＣ垂直磁気記録がで創る。コイル１５及び
コイル１６に流す電流の方向及び電流値はコイル１５及
びコイル１６の巻剖方、巻数、コイル位＃によって変わ
るが、基本的にはコイル１５及び１６で発生する磁界の
向ンをリング型ヘッド内部で閉じない様に同じ方向に発
生させ、ギャップイアで長手記録が行なわれない様に流
す電流を制御する。制御方式としてはコイル１５及び１
６にそれぞれ電流制限用抵抗を入れることにより可能で
ある。The magnetic recording and reproducing system of the present invention will be explained with reference to FIG. 2.1ii2T and FIG. 3. It uses a ring-shaped helide and a coil scoop gear similar to those described in FIGS. 8.9 and 10. - When a current is applied to the coil 9, a magnetic field 12 is generated in the gap 10Vc of the ring-shaped head 8, and magnetic recording can be performed on the magnetic recording medium 11. The magnetic recording in this case is called longitudinal recording, and compared to perpendicular magnetic recording, it involves high-density recording, and a magnetic recording medium is not suitable for this purpose. For this reason, as shown in FIG.
and the gap 1 by passing an appropriate current to the coil 16Vc.
7. By concentrating the magnetic field on the main magnetic pole 13 without generating the magnetic field for longitudinal recording as explained in FIG. The direction and current value of the current flowing through the coils 15 and 16 vary depending on the winding method, number of turns, and coil position # of the coils 15 and 16, but basically the direction of the magnetic field generated in the coils 15 and 16 is determined by the direction of the magnetic field generated in the coils 15 and 16. The current is generated in the same direction so as not to close inside the mold head, and the flowing current is controlled so that longitudinal recording is not performed at the gap ear. As for the control method, coils 15 and 1
This is possible by inserting current-limiting resistors in each of 6 and 6.
以上の如く本発明によれば、リング型、ット・の独立し
た２個のコイルに流す電流を制御することで補助磁極を
使わずに垂直磁気記録が可能になり構造的に簡ｊ１．
Ｋなり、価格面及び細入立て面で改善される。又再生面
では補助磁極再生より再生効率が数倍良′いリング型ヘ
ッドで再生を行なうため対−音比の効上が行なえる。As described above, according to the present invention, perpendicular magnetic recording is possible without using an auxiliary magnetic pole by controlling the current flowing through two independent ring-shaped coils, and the structure is simplified.
K, which is an improvement in terms of price and fine entry. Furthermore, in terms of reproduction, since reproduction is carried out using a ring-shaped head which has several times better reproduction efficiency than auxiliary magnetic pole reproduction, the sound-to-sound ratio can be improved.
第１図は従来の主磁極とリング型ヘッドを有する垂直磁
気記録再生ヘッドを説明するための構造図、第２図はリ
ング型ヘッド磁気記録を説明するための構造図。
第３図は本発明の一実施例の構造図。
１．１３・・・・・・主磁極
２・・・・・・補助磁極
３、６．９．１５．１６・・・・・・・・コイル４、１
１．１８ ・・・・・・垂直磁気記録媒体５．８．１
４・・・・・・リング型ヘッド７．１０．１７・・・・
・・・・ギャップ第１図
第２図
１り
第３図FIG. 1 is a structural diagram for explaining a conventional perpendicular magnetic recording/reproducing head having a main pole and a ring-type head, and FIG. 2 is a structural diagram for explaining ring-type head magnetic recording. FIG. 3 is a structural diagram of an embodiment of the present invention. 1.13... Main magnetic pole 2... Auxiliary magnetic pole 3, 6.9.15.16... Coil 4, 1
1.18 ... Perpendicular magnetic recording medium 5.8.1
4...Ring type head 7.10.17...
...Gap Figure 1 Figure 2 Figure 1 Figure 3
Claims (1)
磁極）及び独立した２個のコイルを有すリング型ヘッド
を有する磁気ヘッドを用い、記録時に該２個のコイルに
対してリング型ヘッド内部で磁界ループが閉じない方向
に電流を流すことを特徴とする磁気記録再生方式。 ２、特許請求の範囲の第１項記載の磁気記録再生方式に
おいて、再生時［リング型ヘッドのコイルに誘導された
電流変化を検出する磁気記録再生方式。[Scope of Claims] 1) A magnetic head having a ring-shaped head having a high permeability magnetic thin film C or less (main magnetic pole) and two independent coils on the same track is used, and the two coils are used during recording. A magnetic recording and reproducing method characterized by passing current through the coil in a direction that does not close the magnetic field loop inside the ring-shaped head. 2. In the magnetic recording/reproducing system according to claim 1, the magnetic recording/reproducing system detects a change in current induced in a coil of a ring-shaped head during reproduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10472482A JPS58222403A (en) | 1982-06-18 | 1982-06-18 | Magnetic recording and reproducing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10472482A JPS58222403A (en) | 1982-06-18 | 1982-06-18 | Magnetic recording and reproducing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58222403A true JPS58222403A (en) | 1983-12-24 |
| JPH047004B2 JPH047004B2 (en) | 1992-02-07 |
Family
ID=14388437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10472482A Granted JPS58222403A (en) | 1982-06-18 | 1982-06-18 | Magnetic recording and reproducing system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58222403A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60154466A (en) * | 1984-01-24 | 1985-08-14 | Matsushita Electric Ind Co Ltd | Manufacture of fuel electrode for molten carbonate fuel cell |
| US6134078A (en) * | 1994-06-28 | 2000-10-17 | Nec Corporation | High sensitivity, low distortion yoke-type magnetoresistive head |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57183613A (en) * | 1981-05-08 | 1982-11-12 | Matsushita Electric Ind Co Ltd | Magnetic recording system |
-
1982
- 1982-06-18 JP JP10472482A patent/JPS58222403A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57183613A (en) * | 1981-05-08 | 1982-11-12 | Matsushita Electric Ind Co Ltd | Magnetic recording system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60154466A (en) * | 1984-01-24 | 1985-08-14 | Matsushita Electric Ind Co Ltd | Manufacture of fuel electrode for molten carbonate fuel cell |
| US6134078A (en) * | 1994-06-28 | 2000-10-17 | Nec Corporation | High sensitivity, low distortion yoke-type magnetoresistive head |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH047004B2 (en) | 1992-02-07 |
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