WO1992002014A1 - Magnetic head - Google Patents

Magnetic head Download PDF

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Publication number
WO1992002014A1
WO1992002014A1 PCT/JP1991/000945 JP9100945W WO9202014A1 WO 1992002014 A1 WO1992002014 A1 WO 1992002014A1 JP 9100945 W JP9100945 W JP 9100945W WO 9202014 A1 WO9202014 A1 WO 9202014A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
head
magnetic
writing
reading
Prior art date
Application number
PCT/JP1991/000945
Other languages
French (fr)
Japanese (ja)
Inventor
Shigeru Izawa
Hidefumi Suzuki
Original Assignee
Kabushiki Kaisha Csk
Nihon Card Center Kabushiki Kaisha
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 Kabushiki Kaisha Csk, Nihon Card Center Kabushiki Kaisha filed Critical Kabushiki Kaisha Csk
Priority to KR1019920700653A priority Critical patent/KR920702527A/en
Publication of WO1992002014A1 publication Critical patent/WO1992002014A1/en

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Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition 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
    • G11B5/488Disposition of heads
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127Structure or manufacture of heads, e.g. inductive
    • G11B5/265Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K5/00Methods or arrangements for verifying the correctness of markings on a record carrier; Column detection devices
    • G06K5/02Methods or arrangements for verifying the correctness of markings on a record carrier; Column detection devices the verifying forming a part of the marking action
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G06K7/083Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive
    • G06K7/084Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive sensing magnetic material by relative movement detecting flux changes without altering its magnetised state

Definitions

  • the present invention relates to a magnetic card used for reading and writing data from and to a magnetic card used as a prepaid card or a credit card.
  • a read (hereinafter referred to as verify) is performed to confirm the written content.
  • the source 40 reads or writes data in one stroke (one scan for the data track 11). Because only one could do it, data writing and verifying were done in separate steps.
  • An object of the present invention is to solve the above-mentioned drawbacks when using the conventional head, to reduce the number of steps without changing the processing content, and to improve the processing speed.
  • the present invention provides a magnetic head for reading and writing data magnetically on a magnetic recording medium, comprising: a write head dedicated to writing data; and two data read heads.
  • a dedicated reading head is provided, and the reading head is provided on both sides of the magnetic recording medium in the data track direction of the writing head. Since a magnetic shielding plate is provided between the above-mentioned writing head and each reading head, (1) data reading, (2) writing, and (3) processing of data comprising a verify operation are performed. This can be performed in two steps, and has the effect of improving the processing speed.
  • processing consisting of (1) degaussing, (2) verify, (3) write, and (4) verify for data recorded by a magnetic bar code can be performed in two steps. improves.
  • the invention of Item 2 is characterized in that, in the invention of Item 1, the writing head and the reading head are housed in one case.
  • FIG. 1 is a sectional view showing the configuration of a magnetic head according to one embodiment of the present invention
  • FIG. 2 is a block diagram showing a read / write control unit of a magnetic card reader / writer device using the magnetic head of FIG. 1, and FIGS. 3a and 3b are diagrams of FIG. A time chart showing input and output signals when scanning a data track and a sock on a magnetic recording medium with a magnetic head;
  • FIGS. 4a and 4b are timing charts showing input / output signals when a magnetic bar code is scanned by the magnetic head of FIG. 1,
  • FIG. 5 and FIG. 6 are schematic diagrams showing the processing steps when data processing is performed with a conventional magnetic head.
  • FIG. 1 is a sectional view showing the configuration of a magnetic head according to one embodiment of the present invention.
  • the magnetic head 1 of the present embodiment has one write head 2 exclusively for writing data and two read heads 3a and 3b exclusively for reading data in one case. Is provided.
  • the read heads 3a and 3b are arranged on both sides in the direction along the data track when reading / writing data overnight, with the write head 2 interposed therebetween, and are arranged in a line. They are lined up.
  • Magnetic shielding plates 4 are provided between the reading head 3a and the writing head 2 and between the reading head 3b and the writing head 2, respectively. There is. Therefore, even if each core is excited at the same time, the respective magnetic fields do not affect each other.
  • the write head 2 includes a core 20 and a coil 21 for exciting the core 20 and a force.
  • the reading heads 3a and 3b each include a core 30 and a coil 31 for detecting a magnetic flux passing through the core 30.
  • FIG. 2 shows a read / write control unit of a reader / writer for a magnetic card using the above-mentioned magnet.
  • the read / write control unit 5 of the present embodiment includes a DZA conversion unit (digital analog conversion unit) 6 connected to the write head 2 of the magnetic head 1 and a read / write unit 6.
  • a DZA conversion unit digital analog conversion unit
  • a / D converter analog-to-digital converter
  • a comparison unit 8 connected to each A / D converter 7
  • a control unit 9 connected to the comparison unit 8 and the DA conversion unit 6.
  • the control unit 9 sends data to be newly written to the magnetic card to the DZA conversion unit 6 and the comparison unit 8.
  • the comparison unit 8 compares the data sent from the control unit 9 with the read signal detected by the read head 3a or 3b. When only data is read, the comparison unit 8 does not perform comparison and sends a read signal to the control unit 9. The control unit 9 sends the read signal to the external processing device or the like.
  • FIG. 3 is a time chart showing input / output signals of the magnetic head 1 when processing data of the magnetic card 10 using the magnetic head 1 of the present embodiment.
  • the time (t) indicates the passage of time
  • the input (Ra) indicates the input signal from the read head 3a
  • the output (W) indicates the output signal from the write head 2
  • the input (Rb ) Indicate the input signals from the reading head 3b, respectively.
  • Fig. 3a shows the process of reading data in the forward path when the magnetic card 10 is inserted into the reader / writer
  • Fig. 3b shows the process of writing and reading data in the return path. Indicates the process of performing a re-ref.
  • scanning of the data track 11 is performed in the order of the reading head 3a, the writing head 2, and the reading head 3b. As shown, there is no output (W), and the input (Ra) and the input (Rb) have the same waveform although there is a time delay accompanying the order of scanning.
  • data is read.
  • Writing, and verifying can be performed in two round trips.
  • time (t), input (Ra), (Rb) output (Vf) are the same as those shown in FIG.
  • Fig. 4a shows the process of degaussing and verifying the magnetic bar on the outward path when the magnetic card 10 is inserted into the reader / writer
  • Fig. 4b shows the data on the return path. This shows the process of writing (magnetizing) and verifying.
  • the scanning order of the data tracks of the write head 2 and the read heads 3a and 3b in the forward and return passes is the same as the order shown in the example of FIG. In the outward path shown in FIG. 4a, the magnetic barcode is read by the read head 3a, and then degaussing is performed by the write head 2.
  • the output signal in the case of DC degaussing is shown in the figure, but AC degaussing may be performed. Since the reading head 3b scans the magnetic barcode after degaussing, no signal is detected. Therefore, by comparing the output (W) and the input (Rb) in the comparing section 8, it is confirmed that degaussing has been surely performed.
  • degaussing and verifying of the magnetic bar code, and data writing and verifying are each performed in one process, and all processes are performed in a total of two processes. Processing can be performed.
  • the magnetic head 1 is used for processing data of the magnetic card 10
  • various types of magnetic disks, magnetic drums, and the like may be used. Needless to say, it can be used for data processing on magnetic recording media.

Abstract

A magnetic head (1) which reads/writes data magnetically from/on a magnetic recording medium is provided with a writing head (2) dedicated to writing of data and two reading heads (3a, 3b) dedicated to reading of data. Since the reading heads (3a, 3b) are provided on both sides of the writing head (2) in the direction of a data track (11) of the magnetic recording medium and two magnetic shielding plates are provided between the writing head (2) and the respective reading heads (3a, 3b) respectively, the processing of data comprising: 1) reading of data, 2) writing of data and 3) verifying of data can be performed in two steps, and the processing speed can be improved. Also, the processing of the data recorded in magnetic bar codes which comprises: 1) erasing of data, 2) verifying of data, 3) writing of data and 4) verifying of data can be performed in two steps too, and the processing speed thereof is also improved.

Description

明 細  Details
磁 気 へ ヅ ド- Magnetism
[技術分野 ] [Technical field ]
本発明は、 プ リ ペイ ドカー ドやク レジ ッ ト カー ド と し て用いられる磁気カー ドに対し、 データの読書きを行う ために用いる磁気へッ ドに関する。  The present invention relates to a magnetic card used for reading and writing data from and to a magnetic card used as a prepaid card or a credit card.
[背景技術〗  [Background technology〗
通常、 磁気カー ドに対してデータの書込みを行った と き は、 書込んだ内容を確認するための読取 り (以下、 ベ リ フ ァ イ と いう ) を行っている。 そ して、 第 5及び第 6 図に示す従来のデータ読書き用磁気へ、ソ ド 4 0 は 1 行程 (データ ト ラ ッ ク 1 1 に対する 1 回の走査) でデータの 読取 り 又は書込みの一方しかできないため、 データの書 込み とベ リ フ ァ イ は別行程で行われていた。  Normally, when data is written to a magnetic card, a read (hereinafter referred to as verify) is performed to confirm the written content. In the conventional magnetic field for reading and writing data shown in FIGS. 5 and 6, the source 40 reads or writes data in one stroke (one scan for the data track 11). Because only one could do it, data writing and verifying were done in separate steps.
上述したよ う に、 従来の磁気へッ ドはデータの読取 り と書込みを同時にできないため、 磁気カー ドのデータの 処理を行 う 場合、 第 5 図に示す よ う に①データの読取 り 、 ②新たなデータの書込み、 ③ベ リ フ ァ イ の 3行程が 必要であ り 、 処理に時間がかかっていた。  As described above, conventional magnetic heads cannot read and write data at the same time, so when processing data on a magnetic card, as shown in FIG. (2) Writing of new data, (3) Beriffy requires three steps, and the processing was time-consuming.
又、 磁気カー ドのデータ ト ラ ッ ク 1 1 に磁気バー コ 一 ド によ り記録されたデータを処理する場合、 第 6 図に示 す よ う に①磁気バーの消磁、 ②ベ リ フ ァ イ 、 ③書込み (新たに磁化) 、 ④ベ リ フ ァイ の 4行程が必要と な り 、 —層処理に時間がかかっていた。 When processing data recorded by the magnetic bar code on the data track 11 of the magnetic card, as shown in Fig. 6, (1) demagnetization of the magnetic bar, (2) ③ Write (New magnetization), and four steps of perfify were required, and — layer processing was time-consuming.
本発明は上記従来のへ ッ ドを用いた場合の欠点を解決 し、 処理内容を変えずに行程数を減ら し、 処理速度の向 上を図る こ とを目的 とする。  An object of the present invention is to solve the above-mentioned drawbacks when using the conventional head, to reduce the number of steps without changing the processing content, and to improve the processing speed.
[発明の開示 ]  [Disclosure of the Invention]
上記の目的を達成するため本発明は、 磁気記録媒体に 磁気的にデータの読書きを行う磁気ヘッ ドにおいて、 1 個のデータ書込み専用の書込み用ヘッ ド と、 2個のデ一 夕読取 り専用の読取 り 用へ ツ ド と を備え、 上記読取 り 用 へ 、ソ ドを、 上記書込み用へ 'ソ ドの上記磁気記録媒体のデ 一タ ト ラ ッ ク方向の両側に配して設け、 上記書込み用へ ッ ド と各読取 り 用へッ ド との間に磁気遮蔽板を設けたた め、 ①データの読取 り 、 ②書込み、 ③ベ リ フ ァイからな るデータの処理を 2行程で行う こ とができ、 処理速度が 向上する と いう効果がある。  In order to achieve the above object, the present invention provides a magnetic head for reading and writing data magnetically on a magnetic recording medium, comprising: a write head dedicated to writing data; and two data read heads. A dedicated reading head is provided, and the reading head is provided on both sides of the magnetic recording medium in the data track direction of the writing head. Since a magnetic shielding plate is provided between the above-mentioned writing head and each reading head, (1) data reading, (2) writing, and (3) processing of data comprising a verify operation are performed. This can be performed in two steps, and has the effect of improving the processing speed.
又、 磁気バーコー ド によ り記録されたデータ に対する ①消磁、 ②ベ リ フ ァイ 、 ③書込み、 ④ベ リ フ ァ イからな る処理も 2 行程で行う こ と がで き 、 処理速度が向上す る。  In addition, processing consisting of (1) degaussing, (2) verify, (3) write, and (4) verify for data recorded by a magnetic bar code can be performed in two steps. improves.
第 2 項の発明は、 第 1 項の発明において、 書込み用 へ ヅ ド と読取 り 用へ ッ ド とを 1 つのケースに収納したこ と を特徴とする。  The invention of Item 2 is characterized in that, in the invention of Item 1, the writing head and the reading head are housed in one case.
[図面の簡単な説明 ] 第 1 図は本発明の一実施例に係る磁気へッ ドの構成を 示す断面図、 [Brief description of drawings] FIG. 1 is a sectional view showing the configuration of a magnetic head according to one embodiment of the present invention,
第 2 図は第 1 図の磁気へ ッ ド を用 いた磁気カ ー ドの リ ーダ一ライ タ装置の読書き制御部を示すプロ ッ ク図、 第 3 図 a, b は第 1 図の磁気ヘッ ドで磁気記録媒体の データ ト ラ 、ソ ク を走査した際の入出力信号を示すタイ ム チ ャ ー ト 、  FIG. 2 is a block diagram showing a read / write control unit of a magnetic card reader / writer device using the magnetic head of FIG. 1, and FIGS. 3a and 3b are diagrams of FIG. A time chart showing input and output signals when scanning a data track and a sock on a magnetic recording medium with a magnetic head;
第 4 図 a , b は第 1 図の磁気ヘ ッ ドで磁気バー コー ド を走査した際の入出力信号を示すタ イ ムチ ヤ 一 ト 、  FIGS. 4a and 4b are timing charts showing input / output signals when a magnetic bar code is scanned by the magnetic head of FIG. 1,
第 5 図及び第 6 図は従来の磁気へッ ドでデータ処理を 行う場合の処理行程を示す概略図である。  FIG. 5 and FIG. 6 are schematic diagrams showing the processing steps when data processing is performed with a conventional magnetic head.
[発明を実施するための最良の形態 ]  [Best Mode for Carrying Out the Invention]
以下、 本発明の実施例について図面を参照して説明す る。  Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第 1 図は本発明の一実施例に係る磁気へ、ソ ドの構成を 示す断面図である。  FIG. 1 is a sectional view showing the configuration of a magnetic head according to one embodiment of the present invention.
本実施例の磁気ヘッ ド 1 は、 1 つのケース内に 1 個の データ書込み専用の書込み用へ ッ ド 2 と 2個のデータ読 取 り専用の読取 り 用ヘ ッ ド 3 a, 3 b と を備える。 読取 り 用ヘ ッ ド 3 a, 3 b は、 書込み用へ ヅ ド 2 を挟んで、 デ一夕の読書き を行う際にデータ 卜 ラ ッ ク に沿う方向の 両側 に配 し て 1 列に並べてある。 又、 読取 り 用ヘ ッ ド 3 a と書込み用へ ッ ド 2 の間、 及び読取 り 用へ ッ ド 3 b と書込み用へ ッ ド 2 の間には磁気遮蔽板 4 をそれぞれ設 けてある。 このため、 各コ アを同時に励磁しても、 それ それの磁界が相互に影響を及ぼすこ とはない。 The magnetic head 1 of the present embodiment has one write head 2 exclusively for writing data and two read heads 3a and 3b exclusively for reading data in one case. Is provided. The read heads 3a and 3b are arranged on both sides in the direction along the data track when reading / writing data overnight, with the write head 2 interposed therebetween, and are arranged in a line. They are lined up. Magnetic shielding plates 4 are provided between the reading head 3a and the writing head 2 and between the reading head 3b and the writing head 2, respectively. There is. Therefore, even if each core is excited at the same time, the respective magnetic fields do not affect each other.
上記書込み用ヘッ ド 2 は、 コ ア 2 0 と コ ア 2 0 を励磁 する コ イ ル 2 1 と 力 ら なる。 又、 上記読取 り 用へ ッ ド 3 a , 3 b は、 それぞれコア 3 0 と コ ア 3 0 を通過する 磁束を検出する コ イ ル 3 1 とからなる。  The write head 2 includes a core 20 and a coil 21 for exciting the core 20 and a force. The reading heads 3a and 3b each include a core 30 and a coil 31 for detecting a magnetic flux passing through the core 30.
上述の磁気へ 、ソ ドを用いた磁気カー ドの リ ーダ一ライ 夕装置の読書き制御部を第 2 図に示す。 図 示 の よ う に、 本実施例の読書き制御部 5 は、 磁気ヘッ ド 1 の書込 み用へ ッ ド 2 に接続された D Z A変換部 (デジタルアナ ロ グ変換部) 6 と、 読取 り 用へ 、ソ ド 3 a, 3 b にそれぞ れ接続された A / D変換部 (アナログデジタル変換部) 7 と 、 各 A / D変換部 7 にそれぞれ接続された比較部 8 と 、 各比較部 8及び D A変換部 6 に接続された制御部 9 と を備えてなる。  FIG. 2 shows a read / write control unit of a reader / writer for a magnetic card using the above-mentioned magnet. As shown in the figure, the read / write control unit 5 of the present embodiment includes a DZA conversion unit (digital analog conversion unit) 6 connected to the write head 2 of the magnetic head 1 and a read / write unit 6. For example, an A / D converter (analog-to-digital converter) 7 connected to each of the sources 3 a and 3 b, a comparison unit 8 connected to each A / D converter 7, And a control unit 9 connected to the comparison unit 8 and the DA conversion unit 6.
上記制御部 9 は、 磁気カー ド に新たに書込むデータを D Z A変換部 6 と比較部 8 と に送る。  The control unit 9 sends data to be newly written to the magnetic card to the DZA conversion unit 6 and the comparison unit 8.
上記比較部 8 は、 制御部 9 よ り送られたデータ と、 読 取 り 用へ ッ ド 3 a又は 3 bで検出 した読取 り信号とを比 鲛する 。 なお、 単にデー タ の読取 り のみを行 う 場合に は、 比較部 8 による比較は行わず、 読取 り信号を制御部 9 に送る。 制御部 9 は送られた読取 り信号を外部処理装 置等に送信する。  The comparison unit 8 compares the data sent from the control unit 9 with the read signal detected by the read head 3a or 3b. When only data is read, the comparison unit 8 does not perform comparison and sends a read signal to the control unit 9. The control unit 9 sends the read signal to the external processing device or the like.
次に、 本実施例の作用について第 3 図及び第 4図を参 照して説明する。 Next, the operation of the present embodiment will be described with reference to FIGS. It will be described in the light of the above.
第 3 図は、 本実施例の磁気ヘ ッ ド 1 を用いて磁気カー ド 1 0 のデータ を処理する場合の磁気へ 'ソ ド 1 の入出力 信号を示すタイ ムチャー ト である。 図中、 時間 (t ) は 時間の経過を、 入力 (Ra )は読取 り 用へツ ド 3 a による入 力信号を、 出力 (W ) は書込み用ヘッ ド 2 による出力信号 を、 入力 (Rb )は読取り 用ヘッ ド 3 b による入力信号をそ れぞれ示す。 又、 第 3 図 a は、 磁気カ ー ド 1 0 を リ ー ダーライ 夕装置に挿入した際の往路におけるデータの読 取 り を行う行程を示し、 第 3 図 bは復路におけるデータ の書込み及びべ リ フ ァ イ を行う行程を示す。  FIG. 3 is a time chart showing input / output signals of the magnetic head 1 when processing data of the magnetic card 10 using the magnetic head 1 of the present embodiment. In the figure, the time (t) indicates the passage of time, the input (Ra) indicates the input signal from the read head 3a, the output (W) indicates the output signal from the write head 2 and the input (Rb ) Indicate the input signals from the reading head 3b, respectively. Fig. 3a shows the process of reading data in the forward path when the magnetic card 10 is inserted into the reader / writer, and Fig. 3b shows the process of writing and reading data in the return path. Indicates the process of performing a re-ref.
第 3 図 a に示す往路では、 読取 り 用ヘッ ド 3 a、 書込 み用へ ッ ド 2 、 読取り 用へヅ ド 3 bの順でデータ ト ラ ヅ ク 1 1 の走査が行われる。 図示のよ う に、 出力 (W ) は無 く 、 入力 (Ra )と入力 (Rb )は走査の順に伴う時間の遅れは あるが同一の波形となる。  In the outward path shown in FIG. 3A, scanning of the data track 11 is performed in the order of the reading head 3a, the writing head 2, and the reading head 3b. As shown, there is no output (W), and the input (Ra) and the input (Rb) have the same waveform although there is a time delay accompanying the order of scanning.
第 3 図 b に示す復路では、 上記往路とは逆の順でデー タ ト ラ ッ ク 1 1 の走査が行われる。 図示のよ う に、 出力 ( W ) と入力 (Ra ) とは同一の波形とな り 、 書込み用ヘ ッ ド 2 によるデータの書込みと読取 り 用へ 、ソ ド 3 a によるべ リ フ ァ イ 力 s 1 行程で同時になされる。 そ して、 出力 ) と入力 (Ra ) と を比較部 8 によ って比較する こ と によ り 、 正し く データの書込みがなされているか確認される。  In the return trip shown in Fig. 3b, scanning of the data track 11 is performed in the reverse order of the above-mentioned forward trip. As shown in the figure, the output (W) and the input (Ra) have the same waveform, and the write head 2 writes and reads the data. Power s is made simultaneously in one stroke. Then, the output) and the input (Ra) are compared by the comparing section 8 to confirm that the data has been written correctly.
以上示 し た よ う に、 本実施例 に よればデー タ の読取 り 、 書込み、 ベ リ フ ァイ を往復の 2行程で行う こ とがで きる。 As described above, according to the present embodiment, data is read. , Writing, and verifying can be performed in two round trips.
次に、 本実施例を用いて、 磁気カー ド 1 0 に磁気バー コー ド によ って記録したデータを処理する場合の入出力 信号を第 4図のタイ ムチヤ一 卜 に示す。  Next, input / output signals when processing data recorded on the magnetic card 10 by the magnetic bar code using the present embodiment are shown in the time chart of FIG.
図中、 時間 (t ) 、 入力 (Ra ), (Rb ) 出力 (Vf ) は第 3 図に 示したもの と同様である。 又、 第 4図 aは、 磁気カー ド 1 0 を リ ーダーライ 夕装置に揷入した際の往路における 磁気バーの消磁及びべ リ フ ァイ を行う行程を示し、 第 4 図 b は復路におけるデータ の書込み (磁化) 及びベ リ フ アイ を行う行程を示す。 往路、 復路における書込み用 ヘ ッ ド 2 と読取り 用ヘッ ド 3 a, 3 bのデータ ト ラ ッ ク の走査順は第 3 図の例で示し た順 と 同様である。 第 4 図 a に示す往路では、 読取 り 用ヘ ッ ド 3 a によ る磁気 バーコ一 ドの読取り の後書込み用へッ ド 2 による消磁が 行われる。 図には直流消磁の場合の出力信号を示してあ るが、 交流消磁を行っても よい。 読取り 用へッ ド 3 bは 消磁後の磁気バーコー ドを走査するため、 何ら信号を検 出 しない。 したがって、 出力 (W ) と入力 (Rb )とを比較部 8 で比較する こ と によ り 、 消磁が確実になされたこ とが 確認される。  In the figure, time (t), input (Ra), (Rb) output (Vf) are the same as those shown in FIG. Fig. 4a shows the process of degaussing and verifying the magnetic bar on the outward path when the magnetic card 10 is inserted into the reader / writer, and Fig. 4b shows the data on the return path. This shows the process of writing (magnetizing) and verifying. The scanning order of the data tracks of the write head 2 and the read heads 3a and 3b in the forward and return passes is the same as the order shown in the example of FIG. In the outward path shown in FIG. 4a, the magnetic barcode is read by the read head 3a, and then degaussing is performed by the write head 2. The output signal in the case of DC degaussing is shown in the figure, but AC degaussing may be performed. Since the reading head 3b scans the magnetic barcode after degaussing, no signal is detected. Therefore, by comparing the output (W) and the input (Rb) in the comparing section 8, it is confirmed that degaussing has been surely performed.
第 4 図 b に示す復路では、 書込み用へッ ド 2 による磁 気バーの交流磁化が行われた後、 読取 り 用へ、ソ ド 3 a に よ り 磁化された磁気バー コー ドの読取 り が行われる。 し たがって、 出力 (W ) と入力 (Ra ) とを比較部 8 で比較する こ と によ り 、 正し く データの書込み (磁化) がされてい るか確認される。 In the return path shown in Fig. 4b, after the magnetic bar is subjected to AC magnetization by the write head 2, the magnetic bar code magnetized by the source 3a is read for reading. Is performed. I Therefore, by comparing the output (W) and the input (Ra) in the comparison unit 8, it is confirmed whether data is written (magnetized) correctly.
以上のよ う に本実施例によれば、 磁気バー コー ドの消 磁及びべ リ フ ァ イ と、 データの書込み及びべ リ フ ァイ と をそれぞれ 1 行程で行い、 合計 2行程で全ての処理を行 う こ とができる。  As described above, according to the present embodiment, degaussing and verifying of the magnetic bar code, and data writing and verifying are each performed in one process, and all processes are performed in a total of two processes. Processing can be performed.
なお、 本実施例では、 磁気へッ ド 1 を磁気カー ド 1 0 のデー タ の処理に用 いた例について説明 し たが、 磁気 カー ド 1 0 の他、 磁気ディ スクや磁気 ドラム等の種々の 磁気記録媒体のデータの処理に用いる こ とができるのは 言う までもない。  In this embodiment, an example in which the magnetic head 1 is used for processing data of the magnetic card 10 has been described. However, in addition to the magnetic card 10, various types of magnetic disks, magnetic drums, and the like may be used. Needless to say, it can be used for data processing on magnetic recording media.

Claims

求 の 範 囲 Range of request
( 1 ) 磁気記録媒体に磁気的にデータの読書きを行う磁気 へ ド におレヽて、 (1) To read and write data magnetically on a magnetic recording medium,
1 個のデータ書込み専用の書込み用へッ ド と、 2個の データ読取 り専用の読取 り 用へッ ド とを備え、  One write head dedicated to writing data and two read heads dedicated to reading data.
上記読取 り 用へ ッ ドを、 上記書込み用へ ッ ド の上記 磁気記録媒体のデータ ト ラ ッ ク方向の両側に配して設 け、  The read head is disposed on both sides of the write head in the data track direction of the magnetic recording medium, and
上記書込み用へ ツ ド と各読取 り 用へッ ド との間に磁気 遮蔽板を設けたこ とを特徴とする磁気へッ ド。  A magnetic head characterized in that a magnetic shielding plate is provided between the writing head and each of the reading heads.
( 2 ) 書込み用ヘッ ド と読取 り 用ヘッ ド とを 1 つのケース に収納したこ と を特徴とする請求の範囲第 1 項に記載の 磁気ヘッ ド。  (2) The magnetic head according to claim 1, wherein the write head and the read head are housed in one case.
PCT/JP1991/000945 1990-07-20 1991-07-16 Magnetic head WO1992002014A1 (en)

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JP2192684A JPH0479006A (en) 1990-07-20 1990-07-20 Magnetic head
JP2/192684 1990-07-20

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0640954A2 (en) * 1993-08-31 1995-03-01 Sony Corporation Magnetic head devices for data cartridges
US8780682B2 (en) * 2012-11-07 2014-07-15 Oracle International Corporation Rotary head data storage and retrieval system and method for data erasure
US8793713B2 (en) 2012-11-07 2014-07-29 Oracle International Corporation Rotary head data storage and retrieval system and method with tape medium having transverse primary data tracks and longitudinal secondary data track
US8869179B2 (en) 2011-06-17 2014-10-21 Oracle International Corporation Rotary head data storage and retrieval system and method
US8897113B2 (en) 2012-11-07 2014-11-25 Oracle International Corporation Rotary head data storage and retrieval system and method for data verification
US9324347B2 (en) 2012-09-19 2016-04-26 Oracle International Corporation Apparatus and method for controlling tape movement in a rotary head data storage system and retrieval system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330263Y2 (en) * 1972-12-15 1978-07-28
JPS6159608A (en) * 1984-08-29 1986-03-27 Tokyo Electric Co Ltd Shield case for read after write magnetic head
JPS6457413A (en) * 1987-08-27 1989-03-03 Matsushita Electric Ind Co Ltd Thin film magnetic head

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330263Y2 (en) * 1972-12-15 1978-07-28
JPS6159608A (en) * 1984-08-29 1986-03-27 Tokyo Electric Co Ltd Shield case for read after write magnetic head
JPS6457413A (en) * 1987-08-27 1989-03-03 Matsushita Electric Ind Co Ltd Thin film magnetic head

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0640954A2 (en) * 1993-08-31 1995-03-01 Sony Corporation Magnetic head devices for data cartridges
EP0640954A3 (en) * 1993-08-31 1996-12-04 Sony Corp Magnetic head devices for data cartridges.
US5854726A (en) * 1993-08-31 1998-12-29 Sony Corporation Magnetic head device for data cartridge
US8869179B2 (en) 2011-06-17 2014-10-21 Oracle International Corporation Rotary head data storage and retrieval system and method
US9324347B2 (en) 2012-09-19 2016-04-26 Oracle International Corporation Apparatus and method for controlling tape movement in a rotary head data storage system and retrieval system
US8780682B2 (en) * 2012-11-07 2014-07-15 Oracle International Corporation Rotary head data storage and retrieval system and method for data erasure
US8793713B2 (en) 2012-11-07 2014-07-29 Oracle International Corporation Rotary head data storage and retrieval system and method with tape medium having transverse primary data tracks and longitudinal secondary data track
US8897113B2 (en) 2012-11-07 2014-11-25 Oracle International Corporation Rotary head data storage and retrieval system and method for data verification

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KR920702527A (en) 1992-09-04

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