WO1992016933A1 - Procede d'enregistrement de donnees de code - Google Patents

Procede d'enregistrement de donnees de code Download PDF

Info

Publication number
WO1992016933A1
WO1992016933A1 PCT/JP1992/000340 JP9200340W WO9216933A1 WO 1992016933 A1 WO1992016933 A1 WO 1992016933A1 JP 9200340 W JP9200340 W JP 9200340W WO 9216933 A1 WO9216933 A1 WO 9216933A1
Authority
WO
WIPO (PCT)
Prior art keywords
code
code data
data
magnetic
magnetically
Prior art date
Application number
PCT/JP1992/000340
Other languages
English (en)
Japanese (ja)
Inventor
Shigeru Izawa
Original Assignee
Kabushiki Kaisha Csk
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 filed Critical Kabushiki Kaisha Csk
Publication of WO1992016933A1 publication Critical patent/WO1992016933A1/fr

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
    • G06K1/12—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
    • G06K1/125—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching by magnetic means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/09—Digital recording

Definitions

  • the present invention relates to a code-data recording method for recording code data on a magnetic card that magnetically reads and writes data.
  • magnetic cards used for prepaid cards and credit cards have IDs in addition to information data (frequency data, amount data, etc.) according to the purpose of use to prevent unauthorized use.
  • Code data such as codes are being recorded.
  • the code data recording method of the present invention has been made to solve the above-described conventional problem. If a part of the code data is legible, the entire code data can be reproduced from the data. It is something.
  • the present invention provides a code data recording system for magnetically recording code data on a magnetic card provided with a magnetic layer for magnetically reading and writing data.
  • Code data is formed by arranging a plurality of strip-shaped bar marks, and each bar mark is formed by magnetically recording the same data as the code data once or more than once. Because of the configuration, one bar code represents one code data as a whole, and the record contents of each bar mark also include the above code data in a complete form. Therefore, even if some of the marks cannot be read due to dirt or damage to the magnetic card, and the code data cannot be read, the remaining bar marks will not be ⁇ All data It can regenerate the body.
  • the code data can be falsified. What can be prevented It is.
  • a first transmitting section for transmitting the same code data as a high-frequency signal to a reader / writer device, and a low-frequency signal are transmitted.
  • a modulator for combining and modulating the signals transmitted by the first and second transmitters; and modulating the signal modulated by the modulator for the magnetic card.
  • a magnetic head for magnetically recording the data, the signal indicating the code data transmitted from the first transmitting section, and the code data transmitted from the second transmitting section. The signal and are combined and recorded in the magnetic field.
  • a laser diode for emitting a laser beam for burning the magnetic layer of the magnetic card in the reader / writer device and a code pattern of the same code data are used.
  • a first and a second mask for recording the laser beam and forming the code pattern with the laser beam, and a multi-surface for guiding the laser beam to a predetermined area on the surface of the magnetic force guide.
  • a mirror, and a laser beam emitted from the laser diode passes through the first mask and is guided to the polygon mirror, and the laser beam reflected by the polygon mirror is reflected by the laser mirror.
  • the code data may be recorded by irradiating a predetermined area on the surface of the magnetic card through the mask of 2 above.
  • a reader / writer device is used.
  • a rotating mirror provided on the other side of the divided optical path and guiding one laser beam to the same area as the laser beam forming the enlarged code pattern; and the two optical paths.
  • An optical AND element that combines the laser light that has passed through the laser diode based on the logical product, and passes the laser light emitted from the laser diode through the mask,
  • the optical path is divided by a mirror, the code pattern formed by one of the laser beams is enlarged by the above-mentioned lens, and both laser beams are combined by the above-mentioned optical AND element, and the above-mentioned magnetic card is formed.
  • the code data may be recorded by irradiating a predetermined area on the surface of the object.
  • FIG. 1 is a perspective view showing a magnetic card provided with a code data by a code night recording method according to an embodiment of the present invention.
  • FIG. 2 is a diagram showing the recorded contents of the bar mark in FIG.
  • FIG. 3 shows the read signal and data of the bar mark in Fig. 1.
  • FIG. 4 is a diagram illustrating a signal waveform.
  • FIG. 4 is a block diagram showing a means for recording the bar mark of FIG. 1 by a magnetic method.
  • FIG. 5 is a schematic diagram showing a means for recording the bar mark of FIG. 1 by an optical method.
  • FIG. 6 is a schematic view showing a means for recording the bar mark of FIG. 1 by an optical method.
  • FIG. 1 is a perspective view showing a magnetic force code provided with an ID code according to a code data recording method according to an embodiment of the present invention.
  • the magnetic card 1 is provided with an ID code formed by arranging a plurality of strip-shaped bar marks 2a and 2b having different widths in a predetermined arrangement.
  • the bar marks 2a and 2b are attached to a location different from the information recording area for recording data (frequency data, balance data, etc.) according to the purpose of use of the magnetic card 1.
  • Burrmarks 2 a and 2 b are magnetically written on the magnetic layer of magnetic card 1.
  • the wide bar mark 2a force "1” and the narrow bar 2b force "0" are shown, and the ID code is "1 0 1 1 ... 0 0" as a whole.
  • the code Fig. 2 shows the recorded contents of bar mark 2a.
  • the NOR mark 2a is formed by repeatedly magnetically writing the ID code "101 1... 00". Further, although not shown, the mark 2b is also formed by repeating the ID code "1011-100", and only the number of repetitions differs.
  • Figure 3 shows the waveform of the read signal when bar marks 2a and 2b are read.
  • the ID code is set to "101" for simplicity
  • the No. mark 2a is written twice for the ID code "1011”
  • the bar mark 2b is written once. It shall be formed by embedding.
  • the data signal b is obtained by shaping the read signal a as shown in the figure after passing through a low-pass filter.
  • the same read signal a is passed through a high-pass filter and then shaped to obtain a data signal c.
  • the data signal shows the ID code "1011" as a whole, and the ID code is included in each data itself. It can be seen that the word “1 0 1 1" is completely included. As a result, even if a part of the bar marks 2a and 2b cannot be read due to contamination or damage of the magnetic card 1, the ID code can be completely removed from the remaining bar marks 2a and 2b. What can be played Next, a means for recording the above code data will be described. Such means include those using a magnetic method and those using an optical method.
  • Fig. 4 shows the code data recording means using the magnetic method.
  • the illustrated code data recording means includes an ID code transmitting section 11 for transmitting the same code data as a high frequency signal, and an ID code transmitting section for transmitting the same code data as a low frequency signal. And an ID code transmitting section 11, 12 modulates a signal modulated by the modulating section 13 by synthesizing the transmitted signal and modulating the signal modulated by the modulating section 13. And a magnetic head 14 for magnetically recording on the magnetic card 1. Further, an input unit 15 for inputting the ID code transmitted by the ID code transmission units 11 and 12 is provided.
  • the ID code input from the input unit 15 is transmitted a plurality of times by the ID code transmitting unit 11 and the ID code transmitting unit 12 transmits the ID code once.
  • the two signals are combined and modulated by the modulator 13 to generate a signal as shown in the read signal a of FIG.
  • the NOR marks 2a and 2b are formed.
  • code data recording means using an optical method will be described.
  • This can be used for the magnetic card 1 in which the magnetic layer is formed of a soft magnetic material having a low magnetic flux density.
  • the laser beam burns the magnetic layer and forms a signal by reversing the magnetism at the boundary.
  • Fig. 5 shows an example of code data recording means using an optical method.
  • the illustrated code data recording means has the same code data as a laser diode 21 for burning out the magnetic layer of the magnetic card 1 and a laser emitting light.
  • the laser beam is located between masks 22 and 23 for recording the code pattern and forming a code pattern with the laser light and the masks 22 and 23.
  • a multi-plane boundary 24 for guiding the magnetic field to a predetermined area on the surface of the magnetic card 1.
  • the laser light emitted from the laser diode 21 passes through the mask 22 and is added with a code pattern. Then, the size of the code return is adjusted by the lens 25 and guided to the mask 23 by the multifaceted boundary 24.
  • the laser light forming the code pattern scans over the mask 23, and the laser light that has passed through the mask 23 changes the magnetic light.
  • the magnetic layer is burned by irradiating a predetermined area on the surface of the magnetic field 1. As a result, the bar marks 2 a and 2 b are formed in the magnetic layer of the magnetic card 1.
  • Fig. 6 shows another example of the code data recording means that started the optical method.
  • the illustrated code data recording means includes a laser diode 31 for emitting a laser beam for burning out the magnetic layer of the magnetic card 1, and a code data for the code data.
  • a mask 32 for recording a code pattern and forming the above code pattern with the above laser light, and a laser light forming a code node.
  • a half mirror 33 that divides the optical path of the laser light into two, and a code-donor provided in one of the divided optical paths and formed by the laser light.
  • the lens 34 and the rotation that guides the laser light to the same area as the laser light that forms the expanded code pattern that is provided on the other side of the split optical path.
  • An optical AND element 36 that combines the boundary 35 and the laser light that has passed through the above two optical paths based on the logical product And.
  • the laser light emitted from the laser diode 31 passes through the mask 32 and has a code pattern added thereto. Then, the size of the code return is adjusted by the lens 37, and the light is split into two optical paths by the single mirror 33.
  • the code pattern formed by the laser light is expanded by the lens 34 and guided to the optical AND element 36.
  • the light is guided to the optical AND element 36 by the mirror 38 and the rotating boundary 35 without changing the size of the code pattern.
  • the laser beam has the same width as the code pattern enlarged by the lens 34 because the rotating boundary 37 rotates. Optical logic with expanse This is led to the product element 36.
  • the laser light synthesized by the optical AND element 36 is irradiated to a predetermined area on the surface of the magnetic card 1 to burn out the magnetic layer. As a result, the marks 2a and 2b are formed in the magnetic layer of the magnetic card 1.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)
  • Magnetic Record Carriers (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Digital Magnetic Recording (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

L'invention concerne un procédé d'enregistrement magnétique de données de code sur une carte magnétique (1) ayant une couche magnétique pour la lecture et l'écriture magnétiques des données. Une pluralité de marques en barres (2a, 2b) ayant des largeurs différentes sont agencées pour former un code. Un ou plusieurs codes ayant les mêmes données sont enregistrés magnétiquement et de manière répétée. Ainsi, même lorsqu'une partie suelement des marques en barres peut être lue, pour des raisons de contamination ou d'endommagement de la carte magnétique (1), il est quand même possible de reproduire la totalité des données de code.
PCT/JP1992/000340 1991-03-20 1992-03-19 Procede d'enregistrement de donnees de code WO1992016933A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3/82041 1991-03-20
JP8204191A JPH04291007A (ja) 1991-03-20 1991-03-20 コ−ドデ−タ記録方式

Publications (1)

Publication Number Publication Date
WO1992016933A1 true WO1992016933A1 (fr) 1992-10-01

Family

ID=13763436

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1992/000340 WO1992016933A1 (fr) 1991-03-20 1992-03-19 Procede d'enregistrement de donnees de code

Country Status (2)

Country Link
JP (1) JPH04291007A (fr)
WO (1) WO1992016933A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6234392B1 (en) * 1997-10-08 2001-05-22 Fujitsu Limited Apparatus for issuing and/or reading recording medium and recording medium recorded with digitally coded signal

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4979210A (fr) * 1972-12-04 1974-07-31
JPS507458A (fr) * 1973-05-18 1975-01-25
JPS5210115A (en) * 1975-07-14 1977-01-26 Furukawa Electric Co Ltd:The Magnetic identifying system for token cards and or the like
JPS52131710A (en) * 1976-04-26 1977-11-04 Minnesota Mining & Mfg Method and device for forming binary code
JPS63222307A (ja) * 1987-03-11 1988-09-16 Toshiba Corp 情報記録再生装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4979210A (fr) * 1972-12-04 1974-07-31
JPS507458A (fr) * 1973-05-18 1975-01-25
JPS5210115A (en) * 1975-07-14 1977-01-26 Furukawa Electric Co Ltd:The Magnetic identifying system for token cards and or the like
JPS52131710A (en) * 1976-04-26 1977-11-04 Minnesota Mining & Mfg Method and device for forming binary code
JPS63222307A (ja) * 1987-03-11 1988-09-16 Toshiba Corp 情報記録再生装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6234392B1 (en) * 1997-10-08 2001-05-22 Fujitsu Limited Apparatus for issuing and/or reading recording medium and recording medium recorded with digitally coded signal

Also Published As

Publication number Publication date
JPH04291007A (ja) 1992-10-15

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