JPH03290805A - Magnetic recorder - Google Patents

Magnetic recorder

Info

Publication number
JPH03290805A
JPH03290805A JP9201390A JP9201390A JPH03290805A JP H03290805 A JPH03290805 A JP H03290805A JP 9201390 A JP9201390 A JP 9201390A JP 9201390 A JP9201390 A JP 9201390A JP H03290805 A JPH03290805 A JP H03290805A
Authority
JP
Japan
Prior art keywords
winding
crosstalk
head
transformer
recording
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
Application number
JP9201390A
Other languages
Japanese (ja)
Inventor
Hiroyuki Omoto
大本 浩之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maxell Ltd
Original Assignee
Hitachi Maxell Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP9201390A priority Critical patent/JPH03290805A/en
Publication of JPH03290805A publication Critical patent/JPH03290805A/en
Pending legal-status Critical Current

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  • Digital Magnetic Recording (AREA)

Abstract

PURPOSE:To prevent the generation of a crosstalk by providing a step-up transformer having a head side winding, a recording/reproducing amplifier side winding, an auxiliary winding wound in the reverse direction against this recording/ reproducing amplifier side winding, and a crosstalk eliminating circuit. CONSTITUTION:A winding 5 is connected to a head side winding 7 of a step-up transformer 6, and a recording/reproducing amplifier side winding 8 and an auxiliary winding 9 of the step-up transformer 6 are wound so as to become the reverse direction to each other. That is, since a crosstalk of a multi-track head 1 is generated in a head core 3 and the head winding 5, the auxiliary winding 9 is provided on the step-up transformer 6, and by converting a signal from this auxiliary winding 9 to a suitable level and inputting it to an adding circuit (crosstalk eliminating circuit), a crosstalk signal is negated. In such a way, the influence of a crosstalk scarcely appears in a reproducing signal and a magnetic recorder having high reliability can be obtained.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は磁気記録装置に係わり、さらに詳しくはそのク
ロストークの除去に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to magnetic recording devices, and more particularly to eliminating crosstalk therein.

〔従来の技術〕[Conventional technology]

磁気ディスクにサーボ信号等を記録する磁気記録装置で
は、処理時間短縮のためマルチトラックヘッドを使用し
て同時に複数のトラック番こ信号を記録することがある
In magnetic recording devices that record servo signals and the like on magnetic disks, a multi-track head is sometimes used to simultaneously record a plurality of track number signals in order to shorten processing time.

第3図は従来例に係るマルチトラックヘッドの斜視図で
あ゛る。
FIG. 3 is a perspective view of a conventional multi-track head.

マルチトラックヘッドlは、ヘッドギャップ2、ヘッド
コア3、スペーサ4、ヘッド巻線5等から構成されてい
る。
The multi-track head 1 includes a head gap 2, a head core 3, a spacer 4, a head winding 5, and the like.

このマルチトラックヘッド1は、図に示すようにヘッド
コア3同士が隣接しているため、巻線を多くすることが
できず、ステップアップトランス6を使用することが多
い。7はステップアップトランス6のヘッド側巻線、8
は記録再生アンプ側巻線である。
In this multi-track head 1, since the head cores 3 are adjacent to each other as shown in the figure, it is not possible to increase the number of windings, and a step-up transformer 6 is often used. 7 is the head side winding of the step-up transformer 6, 8
is the recording/reproducing amplifier side winding.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

ところで、マルチトラックヘッドは上記した様にヘッド
コア間の間隔が狭いため、ヘッドコア及び巻線間でクロ
ストークが発生し、再生信号の信頼性を低下させること
がある。
By the way, as described above, in a multi-track head, since the spacing between the head cores is narrow, crosstalk may occur between the head cores and the windings, which may reduce the reliability of the reproduced signal.

この発明は、上記従来製品が持っていたクロストークの
発生という欠点を解決し、以て信頼性に優れた磁気記録
装置を提供することを目的とする。
It is an object of the present invention to solve the drawback of the generation of crosstalk that the conventional products described above have, and thereby provide a magnetic recording device with excellent reliability.

〔課題を解決するための手段〕[Means to solve the problem]

上記目的は、磁気ディスクの少なくとも2本以上のトラ
ックに同時に記録再生を行うマルチトラックヘッドを設
けた磁気記録装置において、ヘラ1’!巻線および記録
再生アンプ側巻線とこの記録再生アンプ側巻線に対して
逆向きに巻いた補助巻線を有するステップアップトラン
スと、補助巻線からの再生信号を使用してクロストーク
を除去するクロストーク除去回路とを備えたことにより
達成される。
The above object is to provide a magnetic recording device equipped with a multi-track head that simultaneously performs recording and reproduction on at least two tracks of a magnetic disk. A step-up transformer has a winding, a winding on the recording/playback amplifier side, and an auxiliary winding wound in the opposite direction to the winding on the recording/playback amplifier side, and a playback signal from the auxiliary winding is used to eliminate crosstalk. This is achieved by including a crosstalk removal circuit.

〔作用〕[Effect]

マルチトラックヘッドのクロストークは、ヘッドコア及
びヘッド巻線で発生する。そこで、ステップアップトラ
ンスに補助巻線を設け、この補助巻線からの信号を適当
なレヘルに変換して加算回路(クロストーク除去回路〉
に入力してクロストーク信号を打ち消すようにしてクロ
ストークを除去する。
Crosstalk in multi-track heads occurs in the head core and head windings. Therefore, an auxiliary winding is provided in the step-up transformer, and the signal from this auxiliary winding is converted to an appropriate level and an adder circuit (crosstalk removal circuit) is used.
The crosstalk is removed by inputting the signal to cancel the crosstalk signal.

〔実施例〕〔Example〕

以下、本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.

第1図は一実施例番こ係る磁気記録装置の要部の斜視図
であって、マルチトラックヘッド1及びステップアップ
トランス6を示す。マルチトラックヘッドlは@1IA
5を設けた4つのヘッドコア3の間にスペーサ4を接着
して作成した。巻vA5はステップアップトランス6の
へ°ンド側巻線7に接続されている。ステップアップト
ランス6の記録再生アンプ側巻線8、補助巻線9は互い
に逆方向になるように巻いである。
FIG. 1 is a perspective view of the main parts of a magnetic recording apparatus according to an embodiment, showing a multi-track head 1 and a step-up transformer 6. As shown in FIG. Multi-track head l is @1IA
A spacer 4 was bonded between four head cores 3 provided with a spacer 5. Winding vA5 is connected to the end winding 7 of the step-up transformer 6. The recording/reproducing amplifier side winding 8 and the auxiliary winding 9 of the step-up transformer 6 are wound in opposite directions.

第2図は実施例のブロック図を示す。マルチトラックヘ
ッドlの各ヘッドコア(1’bl〜4)の再生出力をV
il〜Vi4とする。ステップアップトランス6の各巻
線7.8.9の巻線数比をl:】;lとすると、ステッ
プアップトランス6の出力は各々Vil〜4.−Vil
〜4となる。加算回路(1)〜(4110は4つの入力
を各々任意の倍率に増幅して加算する機能を持つ。
FIG. 2 shows a block diagram of the embodiment. The playback output of each head core (1'bl to 4) of multi-track head l is V.
il to Vi4. If the winding ratio of each winding 7.8.9 of the step-up transformer 6 is l:];l, then the output of the step-up transformer 6 is Vil to 4.9, respectively. -Vil
~4. Adding circuits (1) to (4110) each have a function of amplifying four inputs to an arbitrary magnification and adding them.

先ず、ヘット′コアぬ]について述べる。ヘッドコアl
1hlの再生出力Vilには、ヘッドコア階2〜4から
のクロストーク信号α2xvt2.  α3XVi3、
α4xVi4が含まれている(α2〜4はヘッドコア1
1に12〜4の出力と、ヘッドコア1lhlに現れるヘ
ッドコアM2〜4のクロストーク信号の比である)。ヘ
ッドコアNll〜4のクロストークが無い場合の再生出
力をV1〜4とすると、Vilは次式で表される。
First, let's talk about het'koanu]. head core l
The playback output Vil of 1hl includes crosstalk signals α2xvt2. α3XVi3,
α4xVi4 is included (α2 to 4 are head core 1
1 to the output of 12 to 4 and the crosstalk signal of head cores M2 to 4 appearing in head core 1lhl). Assuming that the reproduction outputs of the head cores N11-4 when there is no crosstalk are V1-4, Vil is expressed by the following equation.

Vi1=V1+α2・V2+α3−V3+α4・V 4
          −−−−(11加算回路(1)G
こ入力される信号VH,−Vi2V’i3. −Vi4
の各々の増幅度をに1〜に4とすると、加算回路(1)
の出力Volは、 Vol=にIViD(に2  ・−Vi2)+(K3 
 ・−Vi3)+(K4  ・−Vi4)=kl ・(
Vl  +a2 −V2+α3  ・V3+α4 11
4)k2 ・Vi2−に3 ・Vi3−に4 ・Vi4
−(2+となる。
Vi1=V1+α2・V2+α3−V3+α4・V 4
-----(11 addition circuit (1) G
The input signal VH, -Vi2V'i3. -Vi4
If the amplification degree of each is set to 1 to 4, the adder circuit (1)
The output Vol of
・-Vi3)+(K4 ・-Vi4)=kl ・(
Vl +a2 -V2+α3 ・V3+α4 11
4) k2 ・3 to Vi2- 4 to Vi3- ・Vi4
-(It becomes 2+.

クロストーク信号は元の信号に比べて小さいため、Kl
〜に4は小さくなる。そのため、−Vi2〜Vi4に含
まれるクロストーク信号は無視することができる。そこ
で(2)式は、 Vol=kl H(vl  + α2 − V2+ c
r3  ・V3+cr4  ・V4)K2− V2− 
K3 ・V3− K4 ・V4 −(31となる。
Since the crosstalk signal is small compared to the original signal, Kl
4 becomes smaller in ~. Therefore, the crosstalk signals included in -Vi2 to Vi4 can be ignored. Therefore, equation (2) is as follows: Vol=kl H(vl + α2 − V2+ c
r3 ・V3+cr4 ・V4)K2- V2-
K3 ・V3- K4 ・V4 - (31.

K2=に1・α2.に3=に1・α3.に4=Kl・α
4となるように各増幅度を調整すると、(3)式は、 Vol=に1−Vl となる。
K2 = 1・α2. ni3=ni1・α3. 4=Kl・α
When each amplification degree is adjusted to be 4, equation (3) becomes: Vol=1-Vl.

つまり加算回路(1)の出力は、クロストーク信号を除
去したものとなる。同様にしてヘッドコア陥2〜狙4も
クロストーク信号を除去した出力を得ることが出来る。
In other words, the output of the adder circuit (1) is the one from which the crosstalk signal has been removed. Similarly, head cores 2 to 4 can also obtain outputs with crosstalk signals removed.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、本発明ではステップアップトラン
スに記録再生アンプ側巻線と逆向きに巻いた補助巻線を
設け、この補助巻線からの信号を使用してクロストーク
信号を打ち消す回路を設けたため、再生信号にはクロス
トークの影響がほとんど現れず信頼性の高い磁気記録装
置を提供することができる。
As explained above, in the present invention, the step-up transformer is provided with an auxiliary winding wound in the opposite direction to the winding on the recording/reproducing amplifier side, and a circuit is provided that uses the signal from the auxiliary winding to cancel the crosstalk signal. Therefore, it is possible to provide a highly reliable magnetic recording device in which the reproduced signal is hardly affected by crosstalk.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明によるマルチトラックヘッドの一実施例
を示す斜視図である。 第2図は本発明の実施例の回路ブロック図である。 第3図は従来のマルチトラックヘッドの斜視図である。 1・・・マルチトラックヘッド 3・・・ヘッドコア 5・・・ヘッドS線 6・・・ステップアップトランス 7・・・ヘッド側巻線 8・・・記録再生アンプ側巻線 9・・・補助巻線 〈′ ( 〈
FIG. 1 is a perspective view showing an embodiment of a multi-track head according to the present invention. FIG. 2 is a circuit block diagram of an embodiment of the present invention. FIG. 3 is a perspective view of a conventional multi-track head. 1...Multi-track head 3...Head core 5...Head S wire 6...Step up transformer 7...Head side winding 8...Recording/playback amplifier side winding 9...Auxiliary winding Line 〈′ ( 〈

Claims (1)

【特許請求の範囲】[Claims]  磁気ディスクの少なくとも2本以上のトラックに同時
に記録再生を行うマルチトラックヘッドを設けた磁気記
録装置において、ヘッド側巻線および記録再生アンプ側
巻線とこの記録再生アンプ側巻線に対して逆向きに巻い
た補助巻線を有するステップアップトランスと、補助巻
線からの再生信号を使用してクロストークを除去するク
ロストーク除去回路とを備えたことを特徴とする磁気記
録装置。
In a magnetic recording device equipped with a multi-track head that simultaneously performs recording and reproduction on at least two or more tracks of a magnetic disk, the winding on the head side and the winding on the recording/reproducing amplifier side are opposite to the winding on the recording/reproducing amplifier side. What is claimed is: 1. A magnetic recording device comprising: a step-up transformer having an auxiliary winding wound around the auxiliary winding; and a crosstalk removal circuit that uses a reproduced signal from the auxiliary winding to eliminate crosstalk.
JP9201390A 1990-04-09 1990-04-09 Magnetic recorder Pending JPH03290805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9201390A JPH03290805A (en) 1990-04-09 1990-04-09 Magnetic recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9201390A JPH03290805A (en) 1990-04-09 1990-04-09 Magnetic recorder

Publications (1)

Publication Number Publication Date
JPH03290805A true JPH03290805A (en) 1991-12-20

Family

ID=14042623

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9201390A Pending JPH03290805A (en) 1990-04-09 1990-04-09 Magnetic recorder

Country Status (1)

Country Link
JP (1) JPH03290805A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994015332A1 (en) * 1992-12-22 1994-07-07 Thomson-Csf Data magnetic recording process and system, and data medium
US5883750A (en) * 1992-12-22 1999-03-16 Thomson-Csf Method and system for the magnetic recording of information elements and information medium by providing current correction for cross-talk magnetic flux
US20110273797A1 (en) * 2010-05-10 2011-11-10 International Business Machines Corporation Write Head Having a Device for Reducing the Effects of Stray Flux
US8315013B2 (en) 2010-05-10 2012-11-20 International Business Machines Corporation Magnetic write head with flux diverting structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994015332A1 (en) * 1992-12-22 1994-07-07 Thomson-Csf Data magnetic recording process and system, and data medium
US5883750A (en) * 1992-12-22 1999-03-16 Thomson-Csf Method and system for the magnetic recording of information elements and information medium by providing current correction for cross-talk magnetic flux
US20110273797A1 (en) * 2010-05-10 2011-11-10 International Business Machines Corporation Write Head Having a Device for Reducing the Effects of Stray Flux
US8315013B2 (en) 2010-05-10 2012-11-20 International Business Machines Corporation Magnetic write head with flux diverting structure
US9007718B2 (en) * 2010-05-10 2015-04-14 International Business Machines Corporation Write head having a device for reducing the effects of stray flux

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