JPH06243304A - Information recording medium with individual information - Google Patents

Abstract

PURPOSE:To surely prevent data from being altered or copied by recording the composite signal of a signal, which is provided by reading a base material with a microwave sensor, and a signal provided by reading a mug shot part with a photosensor. CONSTITUTION:Concerning an information recording medium 1 formed in the shape of a rectangular card, a magnetic track 4 extended parallelly to a long side and a mug shot 5 are provided on one side of a sheet-shaped base material 3 mixing metallic fibers 2 at random. In addition to the various kinds of information such as the kind, issuing person and validity of this information recording medium 1, personal information for deciding truth/false is recorded in the magnetic track 4. In this case, when issuing the information recording medium 1, the personal information is recorded by moving the information recording medium 1 in a prescribed direction toward a personal information preparing/ recording device. At such a time, the output signal of the microwave sensor is inputted to a synthesizing circuit together with the output of the photosensor and in this circuit, both of outputs are synthesized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording medium such as a prepaid card having metal fibers randomly mixed in a base material as individual information.

[0002]

2. Description of the Related Art Credit cards, cash cards,
In order to prevent unauthorized use, forgery, and falsification of information recording media, such as ID cards and telephone cards, it is necessary to recognize that the information recording medium is a genuine information recording medium. Individual information is provided.

As an information recording medium suitable for such a purpose, one in which fine metal fibers are randomly dispersed in a base material of an information recording medium made of paper, synthetic paper or synthetic resin, or a composite of two sheets is used. It is known that a resin sheet is colored in the same color as this synthetic resin sheet and is bonded with an adhesive containing a metal fiber (for example, JP-A-50).
-69999, JP-A-56-108172, JP-A-3-27489).

According to this conventional technique, the information recording medium is identified by irradiating a predetermined area with microwaves at the time of use and detecting the reflected wave with a microwave sensor to individually obtain information corresponding to the distribution of the metal fibers. Information is read, and the read information is compared with the information previously read in the same area by the microwave sensor when the medium is issued and recorded on the magnetic track. When these two pieces of information match Then, the medium is judged to be authentic and the information recording medium is identified.

Alternatively, as the individual information, a face photograph is formed on a part of the information recording medium, and the information obtained by reading the face photograph with an optical sensor and the same area in advance when the medium is issued are read by the optical sensor. A system has also been proposed in which this medium is compared with the information recorded on a magnetic track to collate the medium with its legitimate owner (for example, Japanese Patent Laid-Open Nos. 58-195281 and 58-195281). 3-42791 gazette).

[0006]

It is possible to judge whether the medium is a counterfeit one or not in the above-mentioned information recording medium using the randomly arranged metal fibers as the individual information. It is not possible to judge whether the user used for is a true owner.

On the other hand, in the case of an information recording medium with a face photograph attached, it is possible to verify the authentic owner and the actual user without the trouble of managing the personal identification number and the memory. However, since the information itself obtained by optically reading a facial photograph is quite difficult to clearly distinguish from the information read from another person's facial photograph, the accuracy of authenticity determination of the medium is relatively low. .

An object of the present invention is to determine whether or not the information recording medium itself is a genuine medium which is not forged, and also determines whether or not the user is a genuine owner. It is to provide a possible information recording medium.

[0009]

According to the present invention, in an information recording medium using a base material in which randomly distributed metal fibers are mixed, a magnetic track and a face photograph provided on the base material are provided, An information recording medium in which a composite signal of a signal obtained by reading the base material with a microwave sensor and a signal obtained by reading the facial photograph portion with an optical sensor is recorded on the magnetic track. Provided.

That is, in the information recording medium of the present invention,
At the time of issuing this medium, the output signal obtained by reading the distribution of the metal fibers mixed in the base material of the information recording medium by the microwave sensor and the face photograph of the true owner provided on this medium are read by the optical sensor. The read output signal is recorded as individual information on the magnetic track of the medium, and the read output signal can be combined with or subtracted from the read output signal (analog or digital signal) or one read output signal It is used as a key for synthesizing the other output signal, and the synthesized signal is recorded on the magnetic track of the medium as individual information.

The authenticity of this information recording medium is determined by synthesizing an output signal obtained by reading a metal fiber distribution with a microwave sensor and an output signal obtained by reading a facial photograph with an optical sensor, and the synthesized signal is used as a magnetic track. It is determined that the medium is authentic when the two signals are compared with each other. Also, by comparing the user of the medium with the facial photograph, it is easy to determine whether or not this is the true owner.

Therefore, the authenticity of the information recording medium can be determined with extremely high accuracy, and the unauthorized use by another person can be surely prevented without the trouble of managing and storing the personal identification number.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An information recording medium according to an embodiment of the present invention will be described below with reference to the drawings.

The rectangular card-shaped information recording medium 1 shown in FIG. 1 has a magnetic track 4 extending parallel to its long side on one surface of a sheet-shaped substrate 3 in which metal fibers 2 are randomly mixed. , And a facial photograph 5 are provided. The magnetic track 4 has a type of the information recording medium 1,
In addition to various information including the issuer, the valid period, etc., individual information for authenticity determination is recorded.

The individual information recorded on the magnetic track 4 is
It is created using the individual information creation / recording device shown in FIG. In FIG. 2, reference numeral 11 is a microwave sensor including a microwave irradiation / reception head 11a, and 12
Is a light source that emits light toward the surface of the information recording medium 1, 1
3 is an optical sensor for detecting the reflected light from the information recording medium 1,
Reference numerals 14 denote magnetic heads for writing predetermined magnetic data on the magnetic track 4.

Recording of the individual information at the time of issuing the information recording medium 1 is performed by moving the information recording medium 1 in a predetermined direction with respect to the individual information creating / recording device.
The output signal of the microwave sensor 11 is input to the synthesizing circuit 15 together with the output of the optical sensor 13, and the synthesizing of the both is performed here. There are various synthesizing methods, but the simplest is to add or subtract two signals (analog or digital signals). The synthesized signal obtained here is quantized by the next quantization circuit 16, modulated by the modulation circuit 17 into a form suitable for magnetic recording, and then recorded on the magnetic track 4 of the information recording medium 1 by the magnetic head 14. It is recorded as a magnetic signal.

On the other hand, when the information recording medium 1 is used, the authenticity determination device shown in FIG. 3, for example, moves the information recording medium 1 in a predetermined direction with respect to the device to determine the authenticity. The authenticity determination device is a microwave sensor 1 including a microwave irradiation / reception head 11a.
1. Light source 1 for irradiating the surface of the information recording medium 1 with light
2 and an optical sensor 13 for detecting the reflected light from the information recording medium 1, a synthesizing circuit 15, and a quantizing circuit 16. These elements are substantially the same as those of the individual information creating / recording apparatus shown in FIG. 2, corresponding elements are designated by the same reference numerals, and detailed description thereof will be omitted.

A magnetic head 21 for reading a magnetic signal recorded on the magnetic track 4 of the information recording medium 1.
Is provided, and the read signal is demodulated by the demodulation circuit 22 and then is output together with the output of the quantization circuit 16 to the comparison circuit 2.
3 and the signal waveforms of the two are compared. As a result of this comparison, when the output signal of the quantization circuit 16 and the output signal of the demodulation circuit 22 match within the range of the defined correlation coefficient, the information recording medium is determined to be true and they do not match. If so, the information recording medium is determined to be false.

FIG. 4 shows the configuration of another authenticity determination device suitable for authenticity determination of the information recording medium of the present invention. Information recording medium 1
The signal read by the magnetic head 21 from the magnetic track 4 is digitized by the magnetic data digitizer 31, the unique pattern characteristic value extractor 32 extracts the unique pattern characteristic value, and then the unique pattern characteristic value determination is performed. Is supplied to the container 33.

On the other hand, the output signals of the microwave sensor 11 and the optical sensor 13 are combined by the combiner 34 into a signal as shown in FIG. 5A, for example. This signal waveform has a unique waveform according to the arrangement of the metal fibers mixed in the base material of the information recording medium 1 and the optical pattern appearing in the facial photograph 5. The combined signal is amplified by the amplifier 35, and then the AC component is extracted in the next AC coupler 36. An example of the output signal waveform of the AC coupler 36 is shown in FIG.

The output signal of the AC coupler 36 is separated into a positive component and a negative component by a positive / negative component separator 37, the positive component remains as it is and the negative component is a negative component inverter 38. After being sign-inverted by, the signal is input to the signal synthesizer 39. By this signal synthesis, the signal shown in FIG.
The signal has a waveform as shown in FIG. The output signal of the signal synthesizer 39 having such a waveform is input to both the wave number counter 41 and the intensity measuring instrument 42 via the signal normalizer 40.

The wave number counter 41 counts the number (n) of peaks of the signal shown in FIG. 5 (c), and the intensity measuring device 42 measures the intensity (h1, h2, h3 ... hn) of each peak. Digitize. Then, the measured value obtained here is supplied to the above-mentioned peculiar pattern characteristic value judging device 33, the coincidence with the output signal of the peculiar pattern characteristic value extracting device 32 is judged, and the judgment result is stored in the information recording medium 1. It is output as the authenticity determination result.

[0023]

As described above, according to the present invention, in an information recording medium in which metal fibers are randomly mixed, randomly distributed metal fibers and a facial photograph formed on this information recording medium are provided. Both are used as identification information of the information recording medium, and the authenticity of the information recording medium is determined by comparing with a signal recorded in advance on the magnetic track of the information recording medium. It is possible to reliably prevent duplication and the like. Further, by comparing the facial photographs, it is possible to visually judge whether the actual user is the true owner or not, so that the unauthorized use by a third party can be prevented. Therefore, the safety and reliability of the information recording medium are significantly improved.

[Brief description of drawings]

1A is a front view of an information recording medium according to an embodiment of the present invention, and FIG. 1B is a partial sectional view of an information recording medium according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of an apparatus for recording a genuine / counterfeit determination identification signal on a magnetic track of the information recording medium of the present invention.

FIG. 3 is a block diagram showing the configuration of an apparatus for making a genuine / counterfeit determination of the information recording medium of the present invention.

FIG. 4 is a block diagram showing the configuration of another device for making a genuine / counterfeit determination of the information recording medium of the present invention.

5A to 5C are waveform charts showing signal waveforms in respective parts of the apparatus of FIG.

[Explanation of symbols]

 1 Information Recording Medium 2 Metal Fiber 3 Base Material 4 Magnetic Track 5 Face Photo 6 Adhesive Layer

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Claims (3)

[Claims] 1. An information recording medium using a base material in which randomly distributed metal fibers are mixed, wherein a magnetic track and a facial photograph provided on the base material are provided, and the base material is attached to the magnetic track. An information recording medium provided with individual information in which a composite signal of a signal obtained by reading with a microwave sensor and a signal obtained by reading the face photograph with an optical sensor is recorded. 2. The composite signal recorded on the magnetic track according to claim 1, wherein the composite signal is between a signal obtained by reading the base material by the microwave sensor and a signal obtained by reading the facial photograph by the optical signal. A magnetic recording medium provided with individual information, which is a signal obtained by addition or subtraction by. 3. The magnetic recording medium according to claim 2, wherein the read signal is a digital signal or an analog signal.