JPH0731769B2 - Magnetic recording / reproducing method - Google Patents
Magnetic recording / reproducing methodInfo
- Publication number
- JPH0731769B2 JPH0731769B2 JP18644189A JP18644189A JPH0731769B2 JP H0731769 B2 JPH0731769 B2 JP H0731769B2 JP 18644189 A JP18644189 A JP 18644189A JP 18644189 A JP18644189 A JP 18644189A JP H0731769 B2 JPH0731769 B2 JP H0731769B2
- Authority
- JP
- Japan
- Prior art keywords
- stylus
- magnetic
- magnetic recording
- recording medium
- signal
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- 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
-
- 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
- G11B2005/0002—Special dispositions or recording techniques
-
- 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
- G11B2005/0002—Special dispositions or recording techniques
- G11B2005/0005—Arrangements, methods or circuits
-
- 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
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/35—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only having vibrating elements
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
- G11B9/12—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using near-field interactions; Record carriers therefor
- G11B9/14—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using near-field interactions; Record carriers therefor using microscopic probe means, i.e. recording or reproducing by means directly associated with the tip of a microscopic electrical probe as used in Scanning Tunneling Microscopy [STM] or Atomic Force Microscopy [AFM] for inducing physical or electrical perturbations in a recording medium; Record carriers or media specially adapted for such transducing of information
- G11B9/1409—Heads
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
- G11B9/12—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using near-field interactions; Record carriers therefor
- G11B9/14—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using near-field interactions; Record carriers therefor using microscopic probe means, i.e. recording or reproducing by means directly associated with the tip of a microscopic electrical probe as used in Scanning Tunneling Microscopy [STM] or Atomic Force Microscopy [AFM] for inducing physical or electrical perturbations in a recording medium; Record carriers or media specially adapted for such transducing of information
- G11B9/1418—Disposition or mounting of heads or record carriers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、記録密度を大幅に向上させる記録再生方式に
関するものであり、特に磁性体のスタイラスと磁気記録
媒体とのトンネル電流を利用し、信号を記録再生する新
規な方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing system that significantly improves recording density, and particularly uses a tunnel current between a magnetic stylus and a magnetic recording medium to generate a signal. The present invention relates to a new recording / reproducing method.
従来の技術 従来磁気記録再生装置に用いられでいるほとんどの方式
は、リング型磁気ヘッドと長手記録用磁気記録媒体との
組合せで、信号を記録再生している。従来の方法につい
て、第３図及び第４図を用いて説明する。まず、第３図
に示すように記録時には、フェライトなどの磁気コアか
ら成る磁気ヘッド32の巻線33に、信号源34からの信号が
記録増幅器35によって増幅され、端子37を介して印加さ
れる。これにより、磁気ヘッドコアには磁束が発生し、
ギャップ部には漏洩磁界が生じる。したがって、磁気ヘ
ッドと磁気テープ30とが相対的に移動する間に、磁気テ
ープが該漏洩磁界によって磁化され、その軌跡31を作
る。再生時には、同一軌跡上を該ヘッドが走行するよう
制御することにより、記録された磁化から発生する磁束
を巻線で信号電圧として再生する。次に該電圧を端子38
を介し、再生増幅器36へ伝え増幅して、後の信号処理回
路に伝達される。2. Description of the Related Art Most of the conventional methods used in magnetic recording / reproducing apparatuses record / reproduce signals using a combination of a ring-type magnetic head and a longitudinal recording magnetic recording medium. A conventional method will be described with reference to FIGS. 3 and 4. First, as shown in FIG. 3, at the time of recording, a signal from a signal source 34 is amplified by a recording amplifier 35 and applied to a winding 33 of a magnetic head 32 composed of a magnetic core such as ferrite via a terminal 37. . As a result, magnetic flux is generated in the magnetic head core,
A leakage magnetic field is generated in the gap. Therefore, while the magnetic head and the magnetic tape 30 move relative to each other, the magnetic tape is magnetized by the leakage magnetic field and forms a locus 31 thereof. At the time of reproduction, the magnetic flux generated from the recorded magnetization is reproduced as a signal voltage in the winding by controlling the head to travel on the same locus. Then apply the voltage to terminal 38
Is transmitted to and amplified by the regenerative amplifier 36, and then transmitted to the subsequent signal processing circuit.
また第４図は、VTRのヘッドシリンダー部分を示したも
のである。磁気テープ42は、走行ポスト40と41との間に
おいて固定シリンダ45と回転シリンダ39上に一定角度巻
き付き走行する。一方、上記回転シリンダ上に装着した
磁気ヘッド44は、窓43から所定量の突出量を持った状態
で、約1800回転のスピードで該磁気テープ上を走査す
る。この様に走査することによって、信号の軌跡が斜め
に形成される。Further, FIG. 4 shows the head cylinder portion of the VTR. The magnetic tape 42 is wound around the fixed cylinder 45 and the rotary cylinder 39 between the running posts 40 and 41 by a fixed angle and runs. On the other hand, the magnetic head 44 mounted on the rotary cylinder scans the magnetic tape at a speed of about 1800 rotations with a predetermined amount of protrusion from the window 43. By scanning in this manner, a signal locus is formed obliquely.
現在、この様にして小型VTRにおける最短記録波長は、
0.4ミクロン，信号の軌跡幅は、20ミクロンにも及び、
１ビット当り磁気テープの４μm2の面積を使用してい
る。At present, the shortest recording wavelength for a compact VTR is
0.4 micron, the track width of the signal reaches 20 microns,
An area of 4 μm 2 of magnetic tape is used per bit.
発明が解決しようとする課題 上記記録密度の向上は、磁気テープとヘッドの改良によ
って、極めて長期間を掛けて達成されてきた。即ち、記
録波長の短波長化とトラック幅方向の磁気記録媒体の利
用面積を狭くする追求が、ヘッド／テープ系のSN比を改
良しながら進められてきた。しかしさらに大幅な記録密
度を達成するには、新規の記録再生方法が必要であり、
本方法はこれを達成しようとするものである。The above-mentioned improvement in recording density has been achieved over an extremely long period of time by improving the magnetic tape and the head. That is, the pursuit of shortening the recording wavelength and narrowing the usable area of the magnetic recording medium in the track width direction has been advanced while improving the SN ratio of the head / tape system. However, in order to achieve even greater recording density, new recording and playback methods are needed,
The method seeks to achieve this.
課題を解決するための手段 本発明は、導電性の磁性体から成るスタイラスと表面が
導電性の磁気記録媒体の間に生じるトンネル電流を一定
になるように、記録された磁気記録媒体上の信号磁化が
上記スタイラスに作用する磁気力に応じて発生する変位
を制御して、その制御電圧の変化から再生信号を検出す
るよう構成したことを特徴とするものである。Means for Solving the Problems The present invention provides a signal recorded on a magnetic recording medium such that a tunnel current generated between a stylus made of a conductive magnetic material and a magnetic recording medium having a surface is constant. The configuration is characterized in that the displacement generated in accordance with the magnetic force acting on the stylus is controlled by the magnetization and the reproduction signal is detected from the change in the control voltage.
作用 以上の構成により、上記スタイラスと磁気記録媒体のト
ンネル電流を利用した本方法では、極めて微細な磁化を
検出でき記録密度を大幅に向上せしめることが出来る。
例えば、“潤滑"vol.33,No.8,pp.603−607に記載されて
いるように、トンネル顕微鏡では、原理的には、面内に
1A,垂直方向に0.1Aの分解能を有することが述べられて
いる。本発明も同様な分解能を持つもので、導電性のス
タイラスを導電性の磁気記録媒体の表面に10A近傍まで
近ずけると、トンネル電流が流れはじめ、上記記録媒体
上に記録された磁化が存在すると、これによって磁性体
であるスタイラスが力を受けて変位する。しかしトンネ
ル電流を一定に保つように制御する（磁気記録媒体とス
タイラスとの間隔を一定）ことによってこの制御電圧が
変化する。これを検出することによって、磁気記録媒体
上の信号磁化を検出することが出来るものである。また
本発明では、さらに該スタイラスとそれに密接に配備し
た磁気コアと垂直記録媒体とを閉磁路になるように構成
することによって、上記磁化から受ける力が増大して、
さらに感度が向上する。With the above configuration, the present method using the stylus and the tunnel current of the magnetic recording medium can detect extremely fine magnetization and greatly improve the recording density.
For example, as described in "Lubrication" vol.33, No.8, pp.603-607, in a tunnel microscope, in principle, in-plane
It is stated that it has a resolution of 1 A and 0.1 A in the vertical direction. The present invention also has similar resolution, and when a conductive stylus is brought close to the surface of a conductive magnetic recording medium up to about 10 A, a tunnel current begins to flow, and the magnetization recorded on the recording medium exists. Then, the stylus, which is a magnetic body, is displaced by receiving a force. However, the control voltage is changed by controlling the tunnel current to be kept constant (the distance between the magnetic recording medium and the stylus is kept constant). By detecting this, the signal magnetization on the magnetic recording medium can be detected. Further, in the present invention, by further configuring the stylus, the magnetic core closely arranged to the stylus, and the perpendicular recording medium so as to form a closed magnetic path, the force received from the magnetization is increased,
The sensitivity is further improved.
また記録時には、該スタイラスによって上記磁気コア上
の巻線に信号電流を加えて、信号を書き込むことが出来
るものである。At the time of recording, a signal current can be applied to the winding on the magnetic core by the stylus to write a signal.
実施例 以下本発明の一実施例の磁気記録再生方法について、図
面を参照しながら説明する。Embodiment A magnetic recording / reproducing method according to an embodiment of the present invention will be described below with reference to the drawings.
第１図および第２図は、それぞれ本発明の全体構成およ
びスタイラスと磁気記録媒体の概要を示すものである。1 and 2 show the overall structure of the present invention and the outline of a stylus and a magnetic recording medium, respectively.
Co−Crなどから成る垂直記録媒体１上にFe,CoNbZrなど
のアモツファス合金、センダストなどの金属磁性体から
構成される導電性のスタイラス２を配備し、該垂直記録
媒体とスタイラス間にバイアス電圧をホルダー19に介し
て、定電圧電源８により印加する。次にスタイラスをCo
−Crの表面に10Åまで近づけるとトンネル電流が流れ始
める。On the perpendicular recording medium 1 made of Co-Cr or the like, a conductive stylus 2 made of a magnetic metal such as Fe, CoNbZr or the like, and a magnetic metal such as sendust is provided, and a bias voltage is applied between the perpendicular recording medium and the stylus. The voltage is applied from the constant voltage power source 8 via the holder 19. Then stylus Co
Tunnel current begins to flow when approaching the surface of −Cr up to 10Å.
この時スタイラスを差し込むホルダー19は、真ちゅうや
銅など導電性の良好な材料を選択した。At this time, for the holder 19 into which the stylus is inserted, a material having good conductivity such as brass or copper was selected.
該トンネル電流を一定になるように制御することによっ
て、常に一定間隔を保ちながら、スタイラスを走査す
る。この様に走査しながら、信号源９からの信号を増幅
器７によって増幅し、フェライトなどの磁性体から成る
コア18上に配備した巻線17に印加することによって磁性
体のスタイラスの先端に磁界を発生せしめ、Co−Cr膜を
磁化する。再生時には、磁性体であるスタイラスが、記
録した磁化より発生する磁界によって、磁気記録媒体の
表面から力を受ける。従って、力を受けることによっ
て、スタイラスが磁気記録媒体の表面に近づこうとす
る。しかし、磁気記録媒体とスタイラスの間隔を一定に
保つよう、すなわちトンネル電流を一定になるよう制御
することによって、その制御電圧が変化する。つまり本
発明は、この制御電圧を検出することよって、磁化から
発生する信号磁界を検出するものである。このため、ス
タイラスと磁気記録媒体とのトンネル電流の変化をトン
ネル電流増幅器３によって拡大し、さらにトンネル電流
は、微小な間隔の変化の対してきわめて敏感に変化する
ため、関数変換器４によって、対数スケールに変換し
た。By controlling the tunnel current to be constant, the stylus is scanned while always maintaining a constant interval. While scanning in this way, the signal from the signal source 9 is amplified by the amplifier 7 and applied to the winding wire 17 provided on the core 18 made of a magnetic material such as ferrite, thereby applying a magnetic field to the tip of the stylus of the magnetic material. Then, the Co-Cr film is magnetized. During reproduction, the stylus, which is a magnetic material, receives a force from the surface of the magnetic recording medium by the magnetic field generated by the recorded magnetization. Therefore, by receiving a force, the stylus tries to approach the surface of the magnetic recording medium. However, the control voltage changes by keeping the distance between the magnetic recording medium and the stylus constant, that is, by controlling the tunnel current to be constant. That is, the present invention detects the signal magnetic field generated from the magnetization by detecting the control voltage. Therefore, the change in tunnel current between the stylus and the magnetic recording medium is magnified by the tunnel current amplifier 3, and the tunnel current changes extremely sensitively to minute changes in the interval. Converted to scale.
その後、サーボ回路５によって磁気記録媒体とスタイラ
スとの間隔の微調用圧電素子に加える制御量を定電圧電
源８の電圧と比較して決定する。この制御信号によっ
て、ピエゾ駆動用電源10からピエゾ素子の両面に配備し
た一対の電極12と12に加えて、ピエゾを所定量駆動す
る。これにより矢印14に示すように垂直方向（ｚ軸方
向）に微調して、該磁気記録媒体とスタイラスとの間隔
を一定になるよう制御した。After that, the servo circuit 5 determines the control amount applied to the piezoelectric element for fine adjustment of the gap between the magnetic recording medium and the stylus by comparing with the voltage of the constant voltage power source 8. By this control signal, the piezo driving power source 10 drives the piezo in a predetermined amount in addition to the pair of electrodes 12 and 12 arranged on both surfaces of the piezo element. As a result, fine adjustment was made in the vertical direction (z-axis direction) as indicated by arrow 14, and the gap between the magnetic recording medium and the stylus was controlled to be constant.
またスタイラスのx,y方向の駆動には、所定間隔のパル
ス信号をｘおよびｙ方向可動微調用のピエゾ素子上のそ
れぞれ一対の電極11,11および13,13の端子21,20に駆動
電圧を印加することによって矢印16,15の方向に変え
て、微小量の可動制御を行う。To drive the stylus in the x and y directions, a drive voltage is applied to the terminals 21 and 20 of the pair of electrodes 11, 11 and 13, 13 on the piezo element for fine adjustment of the x and y directions by applying pulse signals at predetermined intervals. By applying the voltage, the direction of the arrow 16 or 15 is changed, and a small amount of movable control is performed.
また図には示してないが粗動の制御は、x,y,zのピエゾ
素子の自由端をともに固定したキャリッジをリニアモー
タやステップモータとの組合せでに移動させている。Also, although not shown in the figure, coarse movement control is performed by moving a carriage in which the free ends of the piezo elements of x, y, and z are fixed together with a combination of a linear motor and a step motor.
一方前述した方法によって記録した信号は、制御信号増
幅器６によって増幅して読みだされる。On the other hand, the signal recorded by the method described above is amplified by the control signal amplifier 6 and read.
なお、上記スタイラスによって書き込まれた磁化領域の
寸法は、ｘおよびｙ方向可動微調用のピエゾ素子上のそ
れぞれ一対の電極11,11および1313の端子21,20に駆動電
圧を印加することによって矢印16,15の方向に変えて測
定した。The size of the magnetized area written by the stylus is determined by applying a drive voltage to the terminals 21 and 20 of the pair of electrodes 11, 11 and 1313 on the piezo element for movable fine adjustment in the x and y directions, respectively. Then, the measurement was performed by changing to 15 directions.
その結果スタイラス先端の形状を変えることによって、
10〜100Å径のスポット状に記録されていることがわか
った。As a result, by changing the shape of the stylus tip,
It was found that the data was recorded in spots with a diameter of 10 to 100Å.
また第２図は、スタイラスの近傍と磁気記録媒体の配置
を拡大して示したものである。磁気記録媒体１は、A1な
どの非磁性基板24をポリッシングしてその表面を30Å以
下に仕上げ、この上にパーマロイなどから成る軟磁性膜
23を、さらにCo−Crなどの垂直膜25をスパッタリングあ
るいは蒸着によって形成したものである。このCo−Cr膜
の表面に接触させるスタイラス２は、非磁性のベリリウ
ム銅などのＶ字状の板ばね26に固着させ、該ばねの一端
を非磁性でかつ導電性の支持部27に固定する。この支持
部を第１図のホルダー19に形成された穴に差し込み、ス
タイラスをセットする。FIG. 2 is an enlarged view of the vicinity of the stylus and the arrangement of the magnetic recording medium. The magnetic recording medium 1 is obtained by polishing a non-magnetic substrate 24 such as A1 to finish its surface to 30 Å or less, and a soft magnetic film made of permalloy or the like on the surface.
23, and a vertical film 25 such as Co—Cr is formed by sputtering or vapor deposition. The stylus 2 brought into contact with the surface of the Co-Cr film is fixed to a V-shaped leaf spring 26 of non-magnetic beryllium copper or the like, and one end of the spring is fixed to a non-magnetic and conductive support portion 27. . This support is inserted into the hole formed in the holder 19 of FIG. 1 and the stylus is set.
以上の様に構成したスタイラス部は、信号磁界に応じｚ
軸方向に可動しやすく微細な信号を検出できるものであ
る。The stylus portion configured as described above responds to the signal magnetic field by z
It is easy to move in the axial direction and can detect minute signals.
一方18は、フェライトなどから成る磁気コアであり、磁
気記録媒体と相対する面積を充分大きく構成した。また
該磁気コア上に施した巻線17に信号電流を流すことによ
り、スタイラスの先端に強い磁界を発生せしめ、Co−Cr
層を磁化する。第２図では、該スタイラスは紙面の左方
の向かって走行するにつれ、磁化の軌跡28が形成され
る。記録に際して、発生した磁束29は、パーマロイなど
の軟磁性層23と上記磁気コア18および磁性体であるスタ
イラスとで閉磁路を形成し能率よく、微小電流でも記録
できるよう構成した。このとき磁気コアの磁気記録媒体
に対する面積が充分大きいためこの部分で磁化されるこ
とはないものである。On the other hand, 18 is a magnetic core made of ferrite or the like, which has a sufficiently large area facing the magnetic recording medium. A strong magnetic field is generated at the tip of the stylus by passing a signal current through the winding wire 17 formed on the magnetic core.
Magnetize the layers. In FIG. 2, as the stylus runs toward the left side of the paper, a locus 28 of magnetization is formed. During recording, the generated magnetic flux 29 forms a closed magnetic path by the soft magnetic layer 23 such as permalloy, the magnetic core 18 and the stylus which is a magnetic body, so that the magnetic flux 29 can be efficiently recorded even with a minute current. At this time, the area of the magnetic core with respect to the magnetic recording medium is sufficiently large so that the magnetic core is not magnetized.
以上の構成によって、従来の記録密度、１ビット当り４
μm2使用面積に対して、本発明によれば、10-6〜10-4μ
m2となり、これは、従来の記録密度の４〜６桁に相当す
る記録密度の向上が出来るものである。With the above configuration, the conventional recording density is 4 per bit.
According to the present invention, 10 −6 to 10 −4 μ is used for μm 2 used area.
The recording density is m 2 , which can improve the recording density corresponding to 4 to 6 digits of the conventional recording density.
発明の効果 以上のように本発明によれば、従来の電磁誘導を利用し
た方法を用いることはなく、極めて感度のよいトンネル
電流を利用することによって、磁気記録再生方法を実現
できるため、従来に比較して、４〜６桁の記録密度の向
上が可能となる効果がある。As described above, according to the present invention, a magnetic recording / reproducing method can be realized by utilizing a tunnel current having an extremely high sensitivity without using the conventional method utilizing electromagnetic induction. In comparison, there is an effect that the recording density can be improved by 4 to 6 digits.
第１図は、本発明の実施例における磁気記録再生方法の
構成図、第２図は、スタイラスと磁気記録媒体の構成
図、第３図は、従来の磁気ヘッドとテープによる記録再
生の原理図、第４図は、VTRのヘッドシリンダ部の構成
図である。 １……磁気記録媒体、２……スタイラス、３……トンネ
ル電流増幅器、４……関数変換器、５……サーボ回路、
６……制御信号増幅器、７……増幅器、８……定電圧電
源、９……信号源、10……ピエゾ駆動用電源、11,11,1
2,12,13,13……電極、17……巻線、18……磁気コア、23
……軟磁性膜、24……非磁性基板、25……垂直膜、26…
…板ばね、27……支持部、32……磁気ヘッド、30……磁
気テープ、39……回転シリンダ、45……固定シリンダ。FIG. 1 is a block diagram of a magnetic recording / reproducing method in an embodiment of the present invention, FIG. 2 is a block diagram of a stylus and a magnetic recording medium, and FIG. 3 is a principle diagram of recording / reproducing with a conventional magnetic head and tape. , FIG. 4 is a block diagram of the head cylinder portion of the VTR. 1 ... Magnetic recording medium, 2 ... Stylus, 3 ... Tunnel current amplifier, 4 ... Function converter, 5 ... Servo circuit,
6 ... Control signal amplifier, 7 ... Amplifier, 8 ... Constant voltage power supply, 9 ... Signal source, 10 ... Piezo drive power supply, 11,11,1
2,12,13,13 …… Electrode, 17 …… Winding, 18 …… Magnetic core, 23
...... Soft magnetic film, 24 …… Non-magnetic substrate, 25 …… Vertical film, 26 ・ ・ ・
… Leaf spring, 27 …… Support part, 32 …… Magnetic head, 30 …… Magnetic tape, 39 …… Rotating cylinder, 45 …… Fixed cylinder.
Claims (4)
スタイラスと表面が導電性の磁気記録媒体を相対的に移
動して信号を磁気記録再生する手段、前記スタイラスを
前記磁気記録媒体の面上を相対的に駆動する水平方向ス
タイラス駆動手段と、前記磁気記録媒体に対する前記ス
タイラスの間隔を微調整する垂直方向スタイラス駆動手
段と、前記スタイラスに対し記録信号を供給する記録信
号供給手段と、前記磁気記録媒体に対する前記スタイラ
スの移動により発生した電圧から磁気記録を再生出力す
る記録再生手段とからなり、前記磁気記録媒体に記録さ
れた記録信号の前記スタイラスに対して作用した力によ
る変位を、該スタイラスと該磁気記録媒体のトンネル電
流を一定になるように、前記垂直方向スタイラス駆動手
段により制御して前記磁気記録を再生する電圧を誘起す
ることを特徴とする磁気記録再生方法。1. A stylus having at least a tip made of a conductive magnetic material and a means for magnetically recording and reproducing a signal by relatively moving a magnetic recording medium having a conductive surface, and the stylus on the surface of the magnetic recording medium. Horizontal stylus driving means for relatively driving the stylus, vertical stylus driving means for finely adjusting the interval of the stylus with respect to the magnetic recording medium, recording signal supplying means for supplying a recording signal to the stylus, and magnetic Recording and reproducing means for reproducing and outputting magnetic recording from a voltage generated by the movement of the stylus with respect to the recording medium, and the stylus detects displacement of a recording signal recorded on the magnetic recording medium due to a force acting on the stylus. And the vertical stylus driving means controls the tunnel current of the magnetic recording medium to be constant. Magnetic recording and reproducing method characterized by inducing a voltage which play a serial magnetic recording.
備した磁気コアと磁気記録媒体とが閉磁路を構成したこ
とを特徴とする請求項（１）記載の磁気記録再生方法。2. The magnetic recording / reproducing method according to claim 1, wherein the stylus, the magnetic core closely arranged to the stylus, and the magnetic recording medium constitute a closed magnetic circuit.
し、磁気記録媒体に信号を記録することを特徴とする請
求項（２）記載の磁気記録再生方法。3. The magnetic recording / reproducing method according to claim 2, wherein a signal voltage is applied to the winding provided on the magnetic core to record the signal on the magnetic recording medium.
ロイなどの軟磁性膜を形成し、さらにその上にCo−Crな
どの垂直異方性を有する磁性膜を形成したことを特徴と
する請求項（１）記載の磁気記録再生方法。4. A magnetic recording medium characterized in that a soft magnetic film such as permalloy is formed on a non-magnetic substrate, and a magnetic film having perpendicular anisotropy such as Co—Cr is further formed thereon. The magnetic recording / reproducing method according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18644189A JPH0731769B2 (en) | 1989-07-19 | 1989-07-19 | Magnetic recording / reproducing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18644189A JPH0731769B2 (en) | 1989-07-19 | 1989-07-19 | Magnetic recording / reproducing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0352102A JPH0352102A (en) | 1991-03-06 |
| JPH0731769B2 true JPH0731769B2 (en) | 1995-04-10 |
Family
ID=16188503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18644189A Expired - Fee Related JPH0731769B2 (en) | 1989-07-19 | 1989-07-19 | Magnetic recording / reproducing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0731769B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2965121B2 (en) * | 1994-02-15 | 1999-10-18 | インターナショナル・ビジネス・マシーンズ・コーポレイション | High density recording and reproducing device |
| US8830616B2 (en) * | 2011-12-05 | 2014-09-09 | Varian Semiconductor Equipment Associates, Inc. | Magnetic storage device |
-
1989
- 1989-07-19 JP JP18644189A patent/JPH0731769B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0352102A (en) | 1991-03-06 |
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