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WO1992002014A1 - Tete magnetique - Google Patents

Tete magnetique Download PDF

Info

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
English (en)
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/ko
Publication of WO1992002014A1 publication Critical patent/WO1992002014A1/fr

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
    • G11B5/488—Disposition of heads
    • 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
    • G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K5/00—Methods or arrangements for verifying the correctness of markings on a record carrier; Column detection devices
    • G06K5/02—Methods or arrangements for verifying the correctness of markings on a record carrier; Column detection devices the verifying forming a part of the marking action
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods 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
    • G06K7/082—Methods 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
    • G06K7/083—Methods 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
    • G06K7/084—Methods 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Magnetic Heads (AREA)

Abstract

Tête magnétique (1) qui, de manière magnétique, lit des données écrites sur un support d'enregistrement magnétique et qui écrit des données sur un support d'enregistrement magnétique, comprenant une tête d'écriture (2) servant à l'écriture de données et deux têtes de lecture (3a, 3b) servant à la lecture de données. Les têtes de lecture (3a, 3b) sont situées de chaque côté de la tête d'écriture (2) dans le sens d'une piste de données (11) du support d'enregistrement magnétique, et deux plaques de blindage magnétique sont placées respectivement entre la tête d'écriture (2) et les deux têtes de lecture (3a, 3b) respectivement; le traitement des données comprend: 1) la lecture des données, 2) l'écriture des données et 3) la vérification des données, il peut donc être effectuées en deux étapes et la vitesse de traitement peut donc être améliorée. On peut également effectuer le traitement en deux étapes et par conséquent améliorer la vitesse dudit traitement des données enregistrées sous forme de codes à barres magnétiques, qui comprend: 1) l'effacement des données, 2) la vérification des données, 3) l'écriture des données et 4) la vérification des données.
PCT/JP1991/000945 1990-07-20 1991-07-16 Tete magnetique WO1992002014A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920700653A KR920702527A (ko) 1990-07-20 1991-07-16 자기헤드

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2/192684 1990-07-20
JP2192684A JPH0479006A (ja) 1990-07-20 1990-07-20 磁気ヘッド

Publications (1)

Publication Number Publication Date
WO1992002014A1 true WO1992002014A1 (fr) 1992-02-06

Family

ID=16295326

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1991/000945 WO1992002014A1 (fr) 1990-07-20 1991-07-16 Tete magnetique

Country Status (3)

Country Link
JP (1) JPH0479006A (fr)
KR (1) KR920702527A (fr)
WO (1) WO1992002014A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0640954A3 (fr) * 1993-08-31 1996-12-04 Sony Corp Dispositifs à tête magnétique pour des cassettes de données.
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 (fr) * 1972-12-15 1978-07-28
JPS6159608A (ja) * 1984-08-29 1986-03-27 Tokyo Electric Co Ltd リ−ドアフタライト磁気ヘツド用シ−ルドケ−ス
JPS6457413A (en) * 1987-08-27 1989-03-03 Matsushita Electric Industrial 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 (fr) * 1972-12-15 1978-07-28
JPS6159608A (ja) * 1984-08-29 1986-03-27 Tokyo Electric Co Ltd リ−ドアフタライト磁気ヘツド用シ−ルドケ−ス
JPS6457413A (en) * 1987-08-27 1989-03-03 Matsushita Electric Industrial Co Ltd Thin film magnetic head

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0640954A3 (fr) * 1993-08-31 1996-12-04 Sony Corp Dispositifs à tête magnétique pour des cassettes de données.
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

Also Published As

Publication number Publication date
JPH0479006A (ja) 1992-03-12
KR920702527A (ko) 1992-09-04

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