JPS60140576A - Magnetic recording medium for adjustment - Google Patents
Magnetic recording medium for adjustmentInfo
- Publication number
- JPS60140576A JPS60140576A JP25038783A JP25038783A JPS60140576A JP S60140576 A JPS60140576 A JP S60140576A JP 25038783 A JP25038783 A JP 25038783A JP 25038783 A JP25038783 A JP 25038783A JP S60140576 A JPS60140576 A JP S60140576A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- adjustment
- magnetic head
- reproducing
- signals
- 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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
-
- 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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/56—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head support for the purpose of adjusting the position of the head relative to the record carrier, e.g. manual adjustment for azimuth correction or track centering
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は調整用磁気記録媒体に関し、特にフロッピーデ
ィスク等の円板状磁気記録媒体あるいは磁気テープ等を
使用する磁気記録再生装置における、磁気ヘッドの位置
および角度を調整するためのヘッド位置決め精度測定用
記録媒体に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a magnetic recording medium for adjustment, and in particular to a magnetic recording and reproducing apparatus using a disc-shaped magnetic recording medium such as a floppy disk or a magnetic tape. The present invention relates to a recording medium for measuring head positioning accuracy for adjusting position and angle.
従来、例えば、磁気ディスク装置において磁気ヘッドの
取付位置を調整する場合、特殊なデータを書込んだ磁気
ディスク（調整用磁気ディスク）を使用して、磁気ヘッ
ドの読出し出力波形から間接的に位置信号を計１定し調
整を行っていた。Conventionally, for example, when adjusting the mounting position of a magnetic head in a magnetic disk device, a magnetic disk (adjustment magnetic disk) on which special data is written is used to indirectly obtain a position signal from the readout output waveform of the magnetic head. A total of 1 was determined and adjusted.
しかしながら、この方法においては、」二記調整用磁気
ディスクの記録むらに起因する出力変動、磁気ヘッドと
媒体との接触状態の変動、あるいはトンネルイレーズヘ
ッドのニノジ読出し出力の影響等を受け易く、測定精度
が充分でないという問題があった。以下、これを図面に
基づいて詳細に説明する。However, this method is susceptible to the effects of output fluctuations caused by recording unevenness on the adjustment magnetic disk, fluctuations in the contact state between the magnetic head and the medium, or the continuous readout output of the tunnel erase head. There was a problem that the accuracy was not sufficient. This will be explained in detail below based on the drawings.
第１図は上記測定用ディスクの記録信号を、理解し易い
ように顕在化して示したもので、Ｏはディスクの回転中
心である。この測定用ディスクには、上記回転中心○か
ら少し７雌れた偏心点○、を中心とするＡ、８２本のデ
ータが記録さ肛でいる。FIG. 1 clearly shows the recorded signals of the measurement disk for easy understanding, and O is the center of rotation of the disk. On this measurement disk, 82 pieces of data are recorded, centered at an eccentric point ○, which is slightly 7 points away from the rotation center ○.
測定対象の磁気ヘッドｌ−１の位置が、０から７６番ま
である７７トランク中の３８番目の１−ランクどすれば
、該トラック３８のＷ規の半径７１．６’１５ｍｍを基
Ｙ曽として、７１．６４５＋αと７１．６／１５−αの
半径位置に上記Ａ、８２本の信号が記録される。If the position of the magnetic head l-1 to be measured is the 38th 1-rank among the 77 trunks from 0 to 76, then the radius of the W scale of the track 38 is 71.6'15 mm as Y so. , 71.645+α and 71.6/15-α are the 82 signals A mentioned above.
この測定用ディスクをディスクドライブに装着して、正
規のトラック３８の位置にあるヘッド［（のリードギャ
ップＲで読むと、第２図に示した如き検出電圧がＥＲＡ
”’； ＢＢ なるキャッツアイ状の波形がシンクロ
スコープ画面上で観察される。上記検出電圧ｅＡ とｅ
Ｂ との比は正規の１−ラック位置からのへッドト■の
ずれとともに一定の関係で変化するので、逆にこのｅＡ
とＣＢ との大きさの比からヘッド位置のずれを測定
することが可能である。When this measurement disk is installed in a disk drive and the read gap R of the head [() is read at the position of the regular track 38, the detected voltage as shown in FIG.
"'; BB A cat's eye-shaped waveform is observed on the synchroscope screen.The above detection voltages eA and e
Since the ratio with B changes in a constant relationship with the deviation of the headstock from the normal 1-rack position, conversely this eA
It is possible to measure the head position deviation from the ratio of the sizes of CB and CB.
なお、第２図において、Ｔは磁気ディスクの１周の周期
を示している。In FIG. 2, T indicates the period of one revolution of the magnetic disk.
ところが、従来、このキャッツアイ方式によるヘッド位
置の測定では、かなりの測定誤差があった。この測定誤
差の主な原因は、磁気媒体の出力変動、ヘッドと媒体と
の接触状態の変動、トンネルイレーズヘッド（第１図に
示すＥＲＩ、ＥＲ２）のエツジ読出し出力の影響を受け
て、前記検出電圧に第３図に示す如き、モジュレーショ
ンと呼ばれる電圧変動が発生し、これが上記キャソツア
イ検出電圧に重なって、第４図に示す如き検出電圧ｅＡ
／、ｆ！Ｂｌとなり、ｒＦ規の１−ラックと一致してい
る場合にも、ｅ／とｅ／の大きさに差を生じ、ｉ！ＩＩ
＋Ａ Ｂ
定誤差の原因になっていた。However, conventional head position measurements using this cat's eye method have had considerable measurement errors. The main causes of this measurement error are changes in the output of the magnetic medium, changes in the contact state between the head and the medium, and the edge readout output of the tunnel erase head (ERI, ER2 shown in Figure 1). A voltage fluctuation called modulation occurs in the voltage as shown in Fig. 3, and this is superimposed on the cathoseye detection voltage, resulting in a detection voltage eA as shown in Fig. 4.
/, f! Bl, and even if it matches the 1-rack of the rF rule, there will be a difference in the magnitude of e/ and e/, and i! II
+A B This was causing a constant error.
上記問題を解消するものとして、特開昭５２−６９３０
９号公報に示された５Ｉ整用デイスクがある。この調整
用ディスクは、第５図に示す如く、調整用ディスクｌの
調整用トラックを大きく６個程度の群に分け、各群を更
に９個の信号に区分し、先頭の３個の信号区分から成る
ｖＡ識倍信号３４゜５と、調整用１−ラックの１〜ラツ
ク中心に対し内周側と外周側へオフセラ１−シて書かれ
た３ ｔ、Ｉｔの位置１３号４ａ、４ｂ；５ａ＋ Ｓｂ
：６ａ＋ ６ｂから成ることを特徴とするものである。As a solution to the above problem, Japanese Patent Application Laid-Open No. 52-6930
There is a 5I maintenance disk shown in Publication No. 9. As shown in FIG. 5, this adjustment disk roughly divides the adjustment tracks of the adjustment disk L into about six groups, each group is further divided into nine signals, and the first three signal sections are divided into six groups. vA magnification signal 34°5 consisting of 3t, It positions 13 4a, 4b written offset to the inner and outer circumferential sides with respect to the rack center of the adjustment rack; 5a+Sb
:6a+6b.
上述の調整用ディスク１においては、仮に、被調整装置
の磁気ヘッド（図示されていない）が調整用トラック中
心２にある場合には、上記位置信号４ ａ 、 ４ ｂ
； ５ ａ ！ ５ ｂ ： ６ ａ ＋ ６ ｂの
再生信ち・波形４ｃと４ｄ＋５ｃと５ｄ、６ｃと６ｄは
、第６図に示す如く、その振幅が等しく検出される。In the adjustment disk 1 described above, if the magnetic head (not shown) of the device to be adjusted is located at the adjustment track center 2, the position signals 4a, 4b are
; 5 a! The reproduced signal waveforms 4c, 4d+5c, 5d, 6c and 6d of 5b:6a+6b have the same amplitude as shown in FIG.
また、磁気ヘッドが調整用トランク外周側へ半径位置ず
れが生じている場合には第７図に示す如き再生信号が検
出され、上記位置信号４ａ、４ｂ；５ ａ ＋ ５ ｂ
； ６ ａ ＋ ６ ｂの再生信号４ｅと／Ｉｆ。In addition, when the magnetic head radially shifts toward the outer periphery of the adjustment trunk, a reproduced signal as shown in FIG. 7 is detected, and the position signals 4a, 4b; 5 a + 5 b
; Reproduction signals 4e and /If of 6a + 6b.
５ｅと５ｆ、６０と６ｆは、各々信号・振幅に差が生ず
る。そこで、逆に、位置信号振幅差を検出することによ
って磁気ヘッドの半径方向位置ずれが計測できるという
ものである。There are differences in signal and amplitude between 5e and 5f, and between 60 and 6f. Therefore, conversely, the radial positional deviation of the magnetic head can be measured by detecting the position signal amplitude difference.
この方法においては、第１図に示した如き調整用ディス
クを用いる方法と比較して、１周の再生信号振幅変化に
対しての誤差は小さくなるが、まだ、１組の位置信号は
ディスク円周上の相当離れた位置に書かれているため、
前記モジュレーションに起因する磁気ヘッド位置ＩＩ＋
定誤差は避けられないという問題が残っている。In this method, compared to the method using an adjustment disk as shown in FIG. Because it is written quite far away on the circumference,
Magnetic head position II+ caused by the modulation
The problem remains that constant errors are unavoidable.
この問題を解消するには、上記位置信号のピッチを細か
くすることにより、前記モジュレーションの影響を小さ
くすることが考えられるが、この場合には、各位置信号
を正確に検出することが困難になるという別の問題を生
ずることになる。To solve this problem, it is possible to reduce the effect of the modulation by making the pitch of the position signals finer, but in this case, it becomes difficult to accurately detect each position signal. This will cause another problem.
本発明は上記事情に鑑みてなされたもので、その目的ど
するところは、従来の調整用磁気記録媒体における上述
の如き問題を解消し、高精度の位置ずれ調整精度を有す
る調整用磁気記録媒体を提供することにある。The present invention has been made in view of the above circumstances, and its purpose is to solve the above-mentioned problems in conventional magnetic recording media for adjustment, and to provide a magnetic recording medium for adjustment that has high positional deviation adjustment accuracy. Our goal is to provide the following.
本発明の要点は、上述の如く、調整位置の中心線に対し
て対称に配ｍｌされた複数個の調整用信号を有し、該調
整用信号の再生信号振幅により信号？！２Ｇ再生素子の
位置ずれ量を検出する調整用磁気記録媒体において、前
記調整用１８号の数を従来に比べて格段に増加させ、こ
れに伴って困ｋになる前記調整用信号の信号記録再生素
子移動方向位置検出に対応するため、前記調整用４８内
に前記（，７号記録再生素子移動方向位置の情報を含ま
せた点にある。As described above, the main point of the present invention is to have a plurality of adjustment signals arranged symmetrically with respect to the center line of the adjustment position, and to determine whether the signal changes depending on the reproduced signal amplitude of the adjustment signals. ! In an adjustment magnetic recording medium for detecting the amount of positional deviation of a 2G reproducing element, the number of the adjustment No. 18 is significantly increased compared to the conventional one, and this causes problems in signal recording and reproduction of the adjustment signal. In order to cope with the detection of the position in the direction of element movement, information on the position in the direction of movement of the recording/reproducing element (No. 7) is included in the adjustment 48.
以下１本発明の実施例を図面に基づいて詳細に説明する
。EMBODIMENT OF THE INVENTION Below, one embodiment of the present invention will be described in detail based on the drawings.
第８図は本発明の一実施例である調整用磁気ディスクの
信号書込み例を示す図である。図において、１は調整用
磁気ディスク、２はその調整半径位置、７は測定対象磁
気ヘッドを示している。また、Ｃ，、Ｃ，、−−−−Ｃ
ｎ ； Ｄ、、Ｄ２．・・・・Ｄｎは上記調整半径位置
２の両側に対称に書込まれた位置検出信号を示している
。FIG. 8 is a diagram showing an example of signal writing on the adjustment magnetic disk according to an embodiment of the present invention. In the figure, reference numeral 1 indicates a magnetic disk for adjustment, reference numeral 2 indicates its adjustment radius position, and reference numeral 7 indicates a magnetic head to be measured. Also, C,,C,,---C
n ; D, , D2. . . . Dn indicates position detection signals written symmetrically on both sides of the adjustment radius position 2.
上記調整半径位置２とし・では、前述の例と同様に３８
番目のトラック（Ｒ３８）の位置を選定する。この場合
、上記０群の位置検出信号は７１．６／１５−αｍｍの
位置に５また、Ｄ群の位置検出信号は７１．６４５＋α
ｍｍの位置にその中心が来るように記録されることにな
る。Assuming the above adjustment radius position 2, then 38 as in the previous example.
The position of the th track (R38) is selected. In this case, the position detection signal of the 0 group is at the position of 71.6/15-αmm, and the position detection signal of the D group is 71.645+α
It will be recorded so that its center is located at the mm position.
また、上記０群およびＤ群の位置検出信号の各ブロック
の長さは非常に短く、例えば、円周上を１６０〜６４０
等分した程度とする。これにより、後述する如く、前記
モジュレーションの影響を実質的になくすことができる
ものである。この様子を第９図により説明する。In addition, the length of each block of the position detection signal of the 0 group and the D group is very short, for example, 160 to 640 on the circumference.
It should be divided into equal parts. Thereby, as will be described later, the influence of the modulation can be substantially eliminated. This situation will be explained with reference to FIG.
第９図は位置信号にモジュレーションの影響が重なった
検出電圧を模式的に示すものであり、ブロックの記録幅
すが狭くなるに従って、隣接するブロック間の検出電圧
の差が小さくなるため、モジュレーションの影響が小さ
くなることを示している。Figure 9 schematically shows the detection voltage when the influence of modulation is superimposed on the position signal. As the recording width of the block becomes narrower, the difference in the detection voltage between adjacent blocks becomes smaller. This shows that the impact is smaller.
上述の如き多数の位置検出信号を読取り位置計算を実行
する場合には、それぞれの位置検出信号が円周のどの位
置にあるものであるか、また、それぞれの位置検出信号
が上記０群またはＤ群のどちらに属するものか等を識別
する必要がある。以下、これについて、第１０図を用い
て説明する。When performing position calculation by reading a large number of position detection signals as described above, it is necessary to check which position on the circumference each position detection signal is located at, and whether each position detection signal is in the 0 group or D group as described above. It is necessary to identify which group it belongs to. This will be explained below using FIG. 10.
第１０図は各ブロックを検出するための標識を付した位
置検出信号の例を示すものである。FIG. 10 shows an example of a position detection signal with markers for detecting each block.
図に示される如く、各ブロックは同期用信号部（ＶＦＯ
同期）９．ｉｆｌ！５５’１（ＡＤＤＲＥ Ｓ Ｓ）ｆ
’Ｊ１０ｊ” −タ部１１の３つの要素から成っている
。識別部１０１；は、それに続くデータ部１１が属する
グループ名および０群またはＤ群を識ＤＩ＋するための
（ｆｉ号を記録する。上記グループ名とは、例えば、円
周を８つのグループに分け、各グループをそれぞれ２０
のブロックから溝成し、０群に１０グループ、Ｄ群に１
０グループを割当てる場合の、各グループを指す。As shown in the figure, each block consists of a synchronization signal section (VFO
Synchronization)9. ifl! 55'1 (ADDRE S S) f
'J10j' is made up of three elements: the data section 11. The identification section 101; records the group name to which the following data section 11 belongs and the (fi number) for identifying the 0 group or the D group. The above group name means, for example, dividing the circumference into 8 groups and dividing each group into 20
A groove is formed from the blocks, 10 groups in 0 group and 1 group in D group.
Indicates each group when 0 group is assigned.
また、０群またはＤ群を識別するための信号とは、例え
ば、各群のデータが磁気ヘッドのトラッキングＩｌｌ定
用データ（内周側、外周側）であることあるいはアジマ
ス角測定用データ（＋、 −）であること等を示す信号
を言う。In addition, the signal for identifying the 0 group or the D group means, for example, that the data of each group is tracking Ill normalization data (inner circumference side, outer circumference side) of the magnetic head, or azimuth angle measurement data (+ , -), etc.
データ部１１は基準周波数による繰返しであり。The data section 11 is a repetition based on the reference frequency.
該データ部■１の再生電圧を利用して位置および角度測
定を行うことは従来と同様である。また、同期用信号部
９は識別部１０の信号解読のための導入部を構成してい
るものである。The position and angle measurements are performed using the reproduction voltage of the data section (1) in the same manner as in the prior art. Further, the synchronization signal section 9 constitutes an introduction section for decoding the signal of the identification section 10.
データ部１１の信号は、例えば、■グループが２０ブロ
ツクから構成される場合、その内の１６ブロツクを半径
方向位置信号に、残り４ブロツクをアジマス信号に用い
ることができる。For example, when the data section 11 has 20 blocks, 16 blocks can be used as radial position signals and the remaining 4 blocks can be used as azimuth signals.
第１１図、第１２図は本発明の他の実施例を示すもので
あり、第１１図は調整用磁気ディスクの信号波形を、第
１２図は信号書込み例を示している。11 and 12 show other embodiments of the present invention, in which FIG. 11 shows a signal waveform of the adjustment magnetic disk, and FIG. 12 shows an example of signal writing.
本実施例においては、調整用磁気ディスクの調整トラッ
ク位置において、円周を細かく、例えば。In this embodiment, the circumference is finely divided, for example, at the adjustment track position of the adjustment magnetic disk.
１０００等分する。この分割数は、信″’３’ ；ｉｔ
ｌＩｌ’ｌが可能な範囲内でできるでけ多くすること
が望ましい。また、位置検出信号の０群とＤ群とを調整
トランク２を中心どして対ｆホに、しかも、交互に書込
む。Divide into 1000 equal parts. This number of divisions is
It is desirable to increase lIl'l as much as possible within the possible range. Further, the 0 group and the D group of position detection signals are written in pairs f and ho centering on the adjustment trunk 2, and alternately.
ここで、上記０群、Ｄ群の各（ｎ号を、第１２図に示す
ｆｉｎ ＜、更に複数面に分割する。該複数個に分割さ
れた信号の各々を、ここでは Ｃｒｌ、Ｃｎｒ２
・・・・Ｃｎと、 Ｄｎ Ｄｎ、・・・、Ｏｎと呼ぶこ
と１ １ ′ ２
にする。」−２Ｃ群の４８号ど、Ｄ群の信号との間には
、と・（わずかな隙間を設け、再生時の信号ブロックの
切れ目どし、で用いるものとする。Here, each of the 0 group and the D group (n) is further divided into a plurality of planes as shown in FIG. ... Cn and Dn Dn, ..., call it 1 1 ' 2 On.'' - Between the signals of group D, such as No. 48 of group 2C, and... , used to mark the breaks in signal blocks during playback.
第１２図においては、１つの信号ブロックを９個に分け
、それぞ、ｈ、ｃ、−Ｃ，、Ｄｒ、−Ｄｎｌ ９ １
９
としている。なお、Ｃｎ、９Ｄｎは、無信号を記録し、
再生時のＣ４Ｄ号とＤ信号との区分けとしているが、こ
れは、 Ｃｎ、Ｄ、を用いるようにし１
でも良いことは言うまでもない。In FIG. 12, one signal block is divided into nine parts, h, c, -C,, Dr, -Dnl 9 1
9. In addition, Cn and 9Dn record no signal,
Although the C4D signal and D signal are distinguished during reproduction, it goes without saying that Cn and D may be used instead of 1.
また、残り８個の分割区分のうち、ここでは、２Ｃｎ、
Ｄｏを他の信号区分と異なる周波数、隙！１えば、上
記Ｃｎ、 Ｄｎは２’、）ＯＫ Ｈｚ他は１２５ＫＨｚ
２３
というように再生時に再生出力が異なる周波数とする。Also, of the remaining eight divisions, here, 2Cn,
Do you have a different frequency from other signal categories? For example, the above Cn and Dn are 2',) OK Hz and others are 125KHz.
23, the reproduction output is set to different frequencies during reproduction.
この場合の再生出力は、先に第１１図に示したようにな
り、上記Ｃ８，Ｄｏに対応する部分３
の再生出力が小さくなっている。The reproduction output in this case is as shown in FIG. 11, and the reproduction output of the portion 3 corresponding to C8 and Do is small.
従って、信号の切れ目により位置信号が始まったことを
検出し、例えば、２番目の再生出力が小さいときは中心
線内側の信号、３番目の再生出力が小さいときは中心線
外側の信号という如く、予め定めておいた信号を検出す
ることができる。更に、上記再生出力の低い部分を複数
個所設けるようにして、その配列によって円周上の位置
を示すようにすることにより、各々の信号再生時に信号
の書かれている場所を明確にすることができる。Therefore, the start of a position signal is detected by a break in the signal, and for example, when the second reproduction output is small, the signal is on the inside of the center line, and when the third reproduction output is small, it is a signal on the outside of the center line. A predetermined signal can be detected. Furthermore, by providing a plurality of portions with low reproduction output and arranging them to indicate positions on the circumference, it is possible to clearly identify the location where a signal is written when each signal is reproduced. can.
ここで、相対する１組のＣ信号とＤ信号との上記再生出
力の低い部分の数を等し、くシておけば。Here, if the numbers of the low reproduction output parts of the pair of opposing C and D signals are equalized and combined.
この部分の再生出力の平均値は、磁気ヘッドが中心線に
位置しているときは等しくなり、磁気ヘッドが中心線か
らずれているときは等しくなくなるので、両者の比によ
って磁気ヘッドの位置ずれ量を検出することができる。The average value of the reproduction output in this part is equal when the magnetic head is located on the center line, and unequal when the magnetic head is deviated from the center line, so the amount of positional deviation of the magnetic head is determined by the ratio of the two. can be detected.
第１３図は本発明の更に他の実施例を示すものである。FIG. 13 shows still another embodiment of the present invention.
この場合、調整トラックの１周を１０００等分し、これ
を大きく８分割し、ＢＬＫＩ〜Ｂ Ｔ−Ｋ ８と名付け
る。従って１つのＢ Ｌ Ｋは１２５藺の信号群から成
ることになる。１つの１３１、Ｋの信号部は更に７幅の
信号部から成るＳ Ｔ Ａ ＲＴ部、６０晶１の信号部
から成る位置信ぢ検出部、２個の信号部から成る位置信
号アジマス信号切換部、５２個の信号部から成るアジマ
ス信号部、４個の信号部から成るＥＮＤ部から構成され
ている。なお、ＢＬ Ｋ １には、上記５ＴＡＲＴ部に
２個の連続した４７３号を書込んである。In this case, one round of the adjustment track is divided into 1000 equal parts, which are roughly divided into 8 parts and named BLKI to BT-K 8. Therefore, one BLK consists of 125 signal groups. One 131, K signal section further includes an STA RT section consisting of a 7-width signal section, a position signal detection section consisting of a 60 crystal 1 signal section, and a position signal azimuth signal switching section consisting of two signal sections. , an azimuth signal section consisting of 52 signal sections, and an END section consisting of 4 signal sections. In BLK 1, two consecutive numbers 473 are written in the 5TART section.
従って、第１３図に示す如く、５ＴＡＲＴ部に２個の連
続する信号が検出されれば１周の起点であり、次に信号
部１個分だけ無信号となり、次に来るのが６０個（３０
対）の位置信号、次に２個の無信号が検出され九ばアジ
マス信号への切換え信号、次は５２個（２６対）のアジ
マス信号、更に４個の無信号により次のＢＬＫの始まり
というように、検出することか可能である。Therefore, as shown in Fig. 13, when two consecutive signals are detected in the 5TART section, it is the starting point of one round, then there is no signal for one signal section, and then there are 60 signals ( 30
) position signal, then two no signals are detected and a switching signal to the nine-bar azimuth signal, then 52 (26 pairs) azimuth signals, and four more no signals signal the start of the next BLK. As such, it is possible to detect.
上記実施例においては、位置信号またはアジマス信号の
間には、１個の信号部より短い無信号時間を有している
ことは言うまでもない。In the above embodiment, it goes without saying that there is a shorter no-signal time between position signals or azimuth signals than in one signal section.
また、上記位置信号とアジマス信号との比率。Also, the ratio between the above position signal and azimuth signal.
あるいは無信号時間長さは信号が捕捉できる範囲で任意
に変更しても良く、１周の信号部個数も任意に決定する
ことが可能なものである。Alternatively, the length of the no-signal time may be arbitrarily changed within the range in which a signal can be captured, and the number of signal parts in one round can also be arbitrarily determined.
上記各実施例においては、本発明を磁気ディスク装置に
おける磁気ヘッドの位置調整用磁気ディスクに適用した
例を示したが、本発明は磁気ディスク装置に限らず、磁
気テープ装置における磁気ヘッドの位置調整にも適用可
能であることは言うまでもないことである。In each of the above embodiments, an example is shown in which the present invention is applied to a magnetic disk for adjusting the position of a magnetic head in a magnetic disk device. However, the present invention is not limited to a magnetic disk device; Needless to say, it is also applicable to
本発明の好ましい実施態様を以下に列挙する。Preferred embodiments of the invention are listed below.
（１）調整用信号内に第１０図に示す如き識別部を設け
、ここに、当該信号部の位置の情報と調整対象の情報を
記録した調整用磁気記録媒体。(1) An adjustment magnetic recording medium in which an identification section as shown in FIG. 10 is provided in the adjustment signal, and information on the position of the signal section and information on the adjustment target are recorded therein.
（２）調整用信号内に第１１図に示す如き特徴部を設け
、これにより、当該信号部の位置の情報を記録・した調
整用磁気記録媒体。(2) A magnetic recording medium for adjustment in which a characteristic part as shown in FIG. 11 is provided in the adjustment signal, thereby recording information on the position of the signal part.
（３）調整用信号内に第１３図に示す如き、位置の情報
９位置信号およびアジマス信号等を有する信号部を設け
た調整用磁気記録媒体。(3) A magnetic recording medium for adjustment in which a signal portion having position information such as a position signal and an azimuth signal as shown in FIG. 13 is provided in the adjustment signal.
以上述べた如く、本発明によれば、調整位置の中心線に
対して対称に配管された複数個の調整用信号を有し、該
調整用信号の再生信号振幅により信号記録再生素子の位
置ずれ量を検出する調整用磁気記録媒体を、前記調整用
信号内に信号記録再生素子移動方向位置の情報と、調整
対象の情報とを含む如く構成したので、モジュレーショ
ンの影響を受けることがなく、高精度の磁気ヘット位置
測定を可能とする調整用磁気記録媒体を実現できるとい
う顕著な効果を奏するものである。As described above, according to the present invention, there is provided a plurality of adjustment signals piped symmetrically with respect to the center line of the adjustment position, and the position shift of the signal recording/reproducing element is caused by the reproduced signal amplitude of the adjustment signals. The adjustment magnetic recording medium for detecting the amount is configured so that the adjustment signal includes information on the position of the signal recording/reproducing element in the movement direction and information on the adjustment target, so that it is not affected by modulation and can be used at high speeds. This has the remarkable effect of realizing an adjustment magnetic recording medium that enables accurate magnetic head position measurement.
第１図は従来の調整用磁気ディスクの信号書込み例を示
す図、第２図はその観測波形を示す図、第３図はモジュ
レーションの例を示す図、第４図はモジュレーション発
生時の観測波形を示す図、第５図は他の従来例における
信号書込み例を示す図、第６図、第７図はその観測波形
を示す図、第８図は本発明の一実施例である調整用磁気
ディスクの信号書込み例を示す図、第９図はその観測波
形を示す図、第１０図は沓込み信号の詳細な構成を示す
図、第１１図は本発明の他の実施例を示す信号波形を示
す図、第１２図は信号書込み例を示す図、第１３図は本
発明の更に他の実施例である調整用磁気ディスクの信−
号書込み例および観測信号を示す図である。
１：磁気ディスク、２：調整１〜ランク中心線、７：磁
気ヘッド、９：同期用信窮部、１０：識別部、１１：デ
ータ部。
第 １ 図
第２図
第 ３ 図
第 牛 図
第５図
第６図
第 ７ 図
第 ８ 図
第９図
第１０図
第 １１ 文
第１２図
ｎFigure 1 shows an example of signal writing on a conventional adjustment magnetic disk, Figure 2 shows its observed waveform, Figure 3 shows an example of modulation, and Figure 4 shows the observed waveform when modulation occurs. , FIG. 5 is a diagram showing an example of signal writing in another conventional example, FIGS. 6 and 7 are diagrams showing observed waveforms, and FIG. 8 is an example of an adjustment magnet according to an embodiment of the present invention. FIG. 9 is a diagram showing an example of a signal written to a disk, FIG. 9 is a diagram showing its observed waveform, FIG. 10 is a diagram showing a detailed configuration of a writing signal, and FIG. 11 is a signal waveform showing another embodiment of the present invention. 12 is a diagram showing an example of signal writing, and FIG. 13 is a diagram showing a signal writing example of an adjustment magnetic disk according to still another embodiment of the present invention.
FIG. 3 is a diagram showing an example of a number writing and an observation signal. 1: Magnetic disk, 2: Adjustment 1 to rank center line, 7: Magnetic head, 9: Synchronization block section, 10: Identification section, 11: Data section. Figure 1 Figure 2 Figure 3 Cow Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Text Figure 12 Figure n
Claims (1)
個の調整用信号を有し、該調整用信号の再生信号振幅に
より（ｆ、号記録再生素子の位置ずれ量を検出する調整
用磁気記録媒体において、前記調整用信号内に信号記録
再生朱子移動方向位置の情報を含むことを特徴とする：
Ａ整整磁磁気記録媒体(1) Adjustment in which a plurality of adjustment signals are arranged symmetrically with respect to the center line of the adjustment position, and the amount of positional deviation of the (f) recording/reproducing element is detected based on the reproduction signal amplitude of the adjustment signals. The magnetic recording medium for use is characterized in that the adjustment signal includes information on a position in a signal recording/reproducing satin movement direction:
A magnetic shunt magnetic recording medium
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25038783A JPS60140576A (en) | 1983-12-28 | 1983-12-28 | Magnetic recording medium for adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25038783A JPS60140576A (en) | 1983-12-28 | 1983-12-28 | Magnetic recording medium for adjustment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60140576A true JPS60140576A (en) | 1985-07-25 |
| JPH0519203B2 JPH0519203B2 (en) | 1993-03-16 |
Family
ID=17207158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25038783A Granted JPS60140576A (en) | 1983-12-28 | 1983-12-28 | Magnetic recording medium for adjustment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60140576A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07169033A (en) * | 1993-11-08 | 1995-07-04 | Internatl Business Mach Corp <Ibm> | Disk drive |
| JPH09185820A (en) * | 1996-12-25 | 1997-07-15 | Hitachi Ltd | Magnetic recording medium, its manufacture, and magnetic recorder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5269309A (en) * | 1975-12-02 | 1977-06-09 | Basf Ag | Adjustable and controllable magnetic recording disk and particularly flexible magnetic disk |
| JPS58137112A (en) * | 1982-02-05 | 1983-08-15 | Sony Corp | Transmission system for code signal |
-
1983
- 1983-12-28 JP JP25038783A patent/JPS60140576A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5269309A (en) * | 1975-12-02 | 1977-06-09 | Basf Ag | Adjustable and controllable magnetic recording disk and particularly flexible magnetic disk |
| JPS58137112A (en) * | 1982-02-05 | 1983-08-15 | Sony Corp | Transmission system for code signal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07169033A (en) * | 1993-11-08 | 1995-07-04 | Internatl Business Mach Corp <Ibm> | Disk drive |
| JPH09185820A (en) * | 1996-12-25 | 1997-07-15 | Hitachi Ltd | Magnetic recording medium, its manufacture, and magnetic recorder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0519203B2 (en) | 1993-03-16 |
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