JPH05298696A - System for recording information of card-like information recording medium - Google Patents

Abstract

PURPOSE:To leave the information of an information recording area as a history and to prevent the fabrication and the falsification of the information different from a case by a magnetic means by adopting an information recording system by an optical means and writing postscript data. CONSTITUTION:A laser beam emitting device 3 is positioned so that an outgoing laser beam focuses on the information recording area 20 of a card-like recording medium 1 and the information recording area 20 is deteriorated by the laser beam and data is written. An optical pickup device is provided with a light emitting part 4 projecting the beam on the information area 20 and a detection part 5 detecting the reflected beam by the information recording area 20. The beam outgoing from the light emitting part 4 is made a frequency different from the laser beam of the laser beam emitting device 3 and the information recording area 20 is not affected by the beam from the light emitting part 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording system for a card-shaped information recording medium having an information recording area for optically recording information, and particularly to card-shaped information for recording additional information in the information recording area. The present invention relates to an information recording method of a recording medium.

[0002]

2. Description of the Related Art A card-shaped information recording plate comprising a card-shaped substrate provided with an information recording area for recording information by magnetic means or optical means is used for various purposes. The information recording means of the card-shaped information recording medium is determined in consideration of the purpose of use of the card-shaped information recording medium, etc., but the information recorded in the information recording area is rewritten according to the use of the card-shaped information recording medium. If necessary, the information was recorded by a magnetic means that could easily rewrite the recorded data.

On the other hand, the information recording method by optical means is
There is a drawback that it is difficult to rewrite recorded data, and it is not suitable for a card-shaped information recording medium that needs to rewrite information according to use.

When the card-shaped information recording medium is used as a cash substitute card such as a prepaid card or a change card, the information recorded in the information recording area of the card-shaped information recording medium is mainly monetary data. Therefore, the rewriting of information based on the use of the card-shaped information recording medium has been relatively easy regarding the increase and decrease of the monetary value. However, even in this case, since it is necessary to rewrite the information according to the use of the card-shaped information recording medium, the information recording method by the magnetic means has been adopted.

[0005]

When the information is recorded by the magnetic means as in the above-mentioned conventional technique, it is easy to rewrite the recorded data, so that the information may be forged or falsified. It was The information recording system of the present invention relates to a card-shaped information recording medium used as a cash substitute card, which is provided with an information recording area for optically recording information (hereinafter referred to as “card-shaped information recording medium”). It is an object of the present invention to solve the above conventional problems and prevent the forgery and falsification of the information recorded in the information recording area.

[0006]

To achieve the above object, a card-shaped substrate is provided with a recording area for recording information by various methods, and at least one surface of the substrate is optically recorded with information. A card-shaped information recording medium provided with an information recording area, a laser beam emitting device for irradiating the information recording area of the card-shaped information recording medium with a laser beam for altering a part of the information recording area, and the card-shaped information. The optical reader / writer device is provided with an optical pickup device for reading the information recorded in the information recording area of the recording medium.

Further, in the above invention, the laser beam emitted from the laser beam emitting device focuses on the surface of the information recording area of the card-shaped information recording medium, and changes the quality of the information recording area at the focused position. It is characterized by

Further, the laser light emitting device is characterized in that the information recording area is altered into a predetermined number or shape according to the use of the card-shaped information recording medium.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway perspective view showing a card-shaped information recording medium used in an information recording system of a card-shaped information recording medium according to an embodiment of the present invention. As shown in the figure, the card-shaped information recording medium 1 used in this embodiment includes a recording area 11 and an information recording area 20 provided on a part of the surface of the substrate 10, and a substrate 1 including the recording area 11 and the information recording area 20.
0, and a protective layer 30 covering the entire surface.

The substrate 10 is no different from the conventional card-shaped information recording medium and is formed of PET or the like.
The recording area 11 is formed of a magnetic layer or a metal layer according to a means for recording information (magnetic means, optical means, etc.), and is different from the recording area of the conventional card-shaped information recording medium. is not. In this recording area 11, money data is
Various data such as data and ID data are recorded according to the purpose of use of the card-shaped information recording medium. The information recording area 20 is
It is formed of a metal such as aluminum. As will be described later, it is preferable to use a material that is easily deteriorated by laser light irradiation. Further, in the present embodiment, it is provided only on a part of the surface of the substrate 10 as shown, but it may be provided on the entire surface of the substrate 10. Further, it may be provided on both sides of the substrate 10. The protective layer 30 protects the information recording area 20 from a shock and also serves as a concealing layer for concealing the information recording area 20. However, when the protective layer 30 is used as a concealing layer, it is necessary that only visible light is not transmitted and laser light described later is transmitted.

FIG. 2 is a block diagram showing the arrangement of an optical reader / writer device for reading / writing information from / to the card-shaped information recording medium 1 shown in FIG. The illustrated optical reader / writer device 2 includes an information recording area 2 of a card-shaped information recording medium 1.
A laser beam emitting device 3 for irradiating a laser beam for writing information to 0, and an optical pickup device for irradiating the information recording region 20 with a laser beam and reading the information recorded in the information recording region 20 by the reflected light. And a CPU 6 that processes data read by the optical pickup device.

The laser beam emitting device 3 is positioned so that the emitted laser beam is focused on the information recording area 20 of the card-shaped information recording medium 1, and the information recording area 20 is altered by the laser beam. As a result, data is written. Therefore, by appropriately selecting the wavelength of the laser light and the information recording area 20, it becomes easy to write data and the influence of other light can be eliminated.

The optical pickup device comprises a light emitting section 4 for irradiating the information recording area 20 with light and a light detecting section 5 for detecting the light reflected by the information recording area 20. The light emitted from the light emitting portion 4 is different from the laser light of the laser light emitting device 3 and has a wavelength that does not affect the information recording area 20.
The optical reader / writer device 2 may be used by being mounted on a reader / writer device for reading / writing data from / in the recording area 11 of the card-shaped information recording medium 1. Alternatively, they may be used alone.

Next, the operation of this embodiment will be described.
In this embodiment, data is always written in the information recording area 20 as a write-once. In the case of writing data that simply increases or decreases in only one direction, such as frequency data of a prepaid card, as shown in FIGS. 3 to 5, depending on the frequency of use, the laser light of the laser light emitting device 3 is used. Information recording area 2
You can hit a dot at 0.

FIG. 3 shows a case where the frequency 1 is written in the information recording area 20, and FIG. 4 shows a case where the frequency 3 is additionally written. In FIG. 4, additional recording is from the second dot from the left to the rightmost dot.

As shown in FIG. 5, when the information recording area 20 is full, additional recording cannot be performed.
The use of the card-shaped information recording medium 1 is finished. In this case, specific dots or marks for discarding the card-shaped information recording medium 1 may be written in the information recording area 20. If it is necessary to record the increase or decrease of the monetary value according to the use, the dot array or mark shape indicating the monetary value increase, the dot array or the mark shape indicating the monetary value decrease is predetermined. , Writing may be used properly.

[0010]

As described above, the information recording system of the card-shaped information recording medium of the present invention adopts the information recording system by the optical means, and the data recording is performed by additionally writing the data. Since the information written in the record remains as a history and the information cannot be rewritten unlike the case of using magnetic means, there is an effect that the information can be prevented from forgery and falsification.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing a configuration of a card-shaped information recording medium used in an information recording system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of an optical reader / writer device for reading and writing information on the card-shaped information recording medium of FIG.

FIG. 3 is a diagram showing a state in which frequency data is written in the information recording area of FIG.

FIG. 4 is a diagram showing a state in which frequency data is written in the information recording area of FIG.

5 is a diagram showing a state in which frequency data is written in the information recording area of FIG.

[Explanation of symbols]

 1 card-shaped information recording medium 2 optical reader / writer device 3 laser beam emitting device 10 substrate 20 information recording area

Claims (3)

[Claims] 1. A card-shaped information recording device comprising a card-shaped substrate provided with a recording region for recording information by various methods and at least an information recording region for optically recording information provided on one side of the substrate. A medium, a laser light emitting device for irradiating the information recording area of the card-shaped information recording medium with a laser beam for altering a part of the information recording area, and the information recorded in the information recording area of the card-shaped information recording medium. An information recording system for a card-shaped information recording medium, comprising: an optical reader / writer device having an optical pickup device for reading. 2. The laser beam emitted by the laser beam emitting device focuses on the surface of the information recording area of the card-shaped information recording medium, and alters the information recording area at the focused position. An information recording system for a card-shaped information recording medium according to claim 1. 3. The laser light emitting device according to claim 1, wherein the information recording area is altered into a predetermined number or shape according to the use of the card-shaped information recording medium. Information recording method for card-shaped information recording medium.