JP2000036137A - Optical memory card and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical memory card and its manufacture, a card low in cost, impossible to alter and capable of storing a large amount of information. SOLUTION: The optical memory card 1 is provided with an optical storage surface 3 consisting of a prescribed planar base material 2 and a light absorbing or a light reflecting material applied to the surface of the base material 2; and the card is designed to stored information on the optical storage surface 3 by means of an element 4 that causes difference in light reflection on the surface 3. In addition, the optical storage surface 3 can be protected by coating it with a protective film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an optical memory card in which information is stored on an optical storage surface by an element causing a difference in reflection on the optical storage surface, and an optical memory card manufactured by this method. Things.

[0002]

2. Description of the Related Art Conventionally, this type of memory card has a desired processing by applying or printing a magnetic recording medium on a card base material, recording information on the magnetic recording medium, and reading the information. It is well known that the information is used by a method such as erasing or updating the information after that. This memory card is used in various fields because of the low price of the card itself, the ease of writing and reading, the relatively low cost of the device therefor, and the ease of carrying in size. As for optical memories, laser disks (LD), compact disks (CD) and the like are provided in the field of audiovisual, and compact disks and magneto-optical disks are provided in the field of information processing. . The optical memory is often used because it has a disk shape and can store a large amount of information for a relatively small size, and is relatively easy to handle. Further, with respect to the IC card, a processing device capable of processing predetermined information, a storage area for storing information, and the like are arranged in the card, and management is easy based on information processing by an internal processing device and a recitation number. Therefore, it is said that practical application is approaching.

[0003]

However, the memory card provided with the conventional magnetic recording medium has the following disadvantages. (1) Since rewriting is easy, forgery and falsification are easy to occur, and illegal use frequently occurs. (2) The storage capacity is small and a large amount of information cannot be stored. (3) Stored information is easily lost by approaching a magnetic product or the like. In the case of conventional optical memories such as LDs and CDs,
Since the outer shape is disk-shaped, it is easy to synchronize and position information writing / reading timing. However, when this is applied to a card type, the following disadvantages occur.

(1) Timing for writing and reading information cannot be synchronized, and positioning is difficult. (2) Synchronization signals for reading information and the like are complicated and errors are likely to occur. (3) If the written information has a defect or the reading surface of the information is dirty, the information cannot be read accurately.

[0005] Furthermore, the IC card currently under development has the following disadvantages. (1) When used with a recite number, the use becomes impossible due to forgetting of the recite number, or the usability becomes difficult due to the large number of digits of the recite number. (2) Basically, reading and writing are possible, and the recite number can be broken by a hacker, so that forgery and falsification can be performed relatively easily. Also,
In order to protect against hackers and the like, the time required for data change work and the personnel required for the work are required, which is expensive. (3) The price of the IC card itself is high, and a device for reading and writing these is also expensive. (4) Since a large amount of personal information is stored in the IC card, leakage of the personal information and infringement of privacy cannot be avoided.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method of manufacturing an optical memory card and an optical memory card which can solve the above-mentioned drawbacks, can be easily manufactured, cannot be altered, and can store a large amount of information.

[0007]

According to a first aspect of the present invention, there is provided a method of manufacturing an optical memory card, comprising the steps of: providing a predetermined flat base material and a light-absorbing or light-absorbing light on the surface of the base material; The optical storage surface of a card having an optical storage surface made of a material having good reflectivity, a linear or a plurality of points on the orthogonal coordinate system of the optical storage surface with an element that causes a difference in light reflection. Recording the desired information and storing the desired information;
Coating the protective film after optically storing in the above step.

Therefore, according to the first aspect of the present invention, an element that causes a difference in light reflection on the optical storage surface is recorded linearly or as a plurality of dots on the orthogonal coordinate system of the optical storage surface. Therefore, a large amount of information can be stored with a simple structure. Further, since the writing device can be simple, it can be provided at low cost. Furthermore, once stored, update storage is impossible, so that an optical memory card that cannot be altered can be obtained.

According to a second aspect of the present invention, there is provided a method for manufacturing an optical memory card, comprising the steps of: forming a predetermined flat base material on a surface of the base material; A step of obtaining a card having the configured optical storage surface and a protective film for protecting the optical storage surface, and orthogonalizing the optical storage surface with an element that causes a difference in light reflection on the optical storage surface of the card. Recording the information in a linear manner or a plurality of points on the coordinate system and storing desired information.

Therefore, according to the second aspect of the present invention, an element which causes a difference in light reflection on the optical storage surface is recorded linearly or as a plurality of dots on the orthogonal coordinate system of the optical storage surface. Since desired information is stored in the memory card, a large amount of information can be stored in a simple structure, and once stored, update storage is impossible, so that an optical memory card that cannot be altered can be obtained.

According to a third aspect of the present invention, there is provided a method for manufacturing an optical memory card, comprising a sheet-like substrate and a material having good light-absorbing or light-reflecting properties on the surface of the substrate. With a predetermined section on the sheet provided with the optical storage surface, the desired information is recorded linearly or as a plurality of dots on the orthogonal coordinate system of the optical storage surface with an element that causes a difference in light reflection. It is characterized by comprising a writing step, a step of coating a protective film after optically storing in the step, and a step of cutting the sheet into a card shape.

Therefore, according to the third aspect of the present invention, an element which causes a difference in light reflection on the optical storage surface is recorded linearly or as a plurality of dots on the orthogonal coordinate system of the optical storage surface. Since desired information is stored in the memory card, a large amount of information can be stored in a simple structure, and once stored, an update memory cannot be stored. . Further, since cutting is performed after being stored in a sheet-like material, it is convenient when obtaining a card or the like having the same storage content.

According to a fourth aspect of the present invention, there is provided a method of manufacturing an optical memory card, comprising a sheet-like base material, and a surface of the base material made of a material having good light absorbency or light reflectivity. With a predetermined section on the optical storage surface and a sheet provided with a protective film for protecting the optical storage surface, a linear or a plurality of optical storage surfaces on an orthogonal coordinate system of the optical storage surface with an element causing a difference in light reflection. It is characterized by comprising a step of writing desired information by recording in a dot form, and a step of cutting the sheet into a card form.

Therefore, according to the fourth aspect of the present invention, an element for causing a difference in light reflection on the optical storage surface is recorded linearly or as a plurality of dots on the orthogonal coordinate system of the optical storage surface. Since desired information is stored in the memory card, a large amount of information can be stored in a simple structure, and once stored, an update memory cannot be stored. . Further, since cutting is performed after being stored in a sheet-like material, it is convenient when obtaining a card or the like having the same storage content.

According to a fifth aspect of the present invention, there is provided an optical memory card comprising: a predetermined flat base material;
An optical storage surface made of a material having good light absorption or light reflectivity is provided on the surface of the base material, and information is stored on the optical storage surface with an element that causes a difference in light reflection on the optical storage surface. Characterized in that:

Therefore, according to the fifth aspect of the present invention, since the optical memory card stores information on the optical storage surface by an element that causes a difference in light reflection on the optical storage surface, writing and reading can be easily performed by light. It can be performed, and forgery and falsification are impossible because the element causing the reflection is minute.

According to a sixth aspect of the present invention, in the fifth aspect, when the optical storage surface is made of a light absorbing material, the element is made of a material having good light reflectivity. It is characterized by being written as a line or a plurality of points on the orthogonal coordinate system of the surface.

According to the sixth aspect of the present invention, the element stores information by providing a linear material or a plurality of dot-like materials on the optical storage surface with a good material made of light reflection.
It is possible to read information by using reflected light of a linear object or a plurality of ceiling objects.

According to a seventh aspect of the present invention, in the fifth aspect of the present invention, when the optical storage surface is made of a light-reflective material, the element includes the light-reflective material and the light storage surface. A line or a plurality of points erased on the rectangular coordinate system of the above, or written by a line or a plurality of points on the rectangular coordinate system of the optical storage surface with a light-absorbing substance. It is characterized by.

In the invention according to claim 7, when the element is constituted by eliminating the light-reflective substance linearly or a plurality of points on the orthogonal coordinate system of the optical storage surface,
Due to the absence of reflection of the erased portion, or in the case of writing with a light-absorbing substance on a line or a plurality of points on the rectangular coordinate system of the optical storage surface, the light from the written portion is Due to the absence of reflection, information can be read.

[0021]

Embodiments of the present invention will be described below with reference to the drawings.

<Description of Optical Memory Card> FIG. 1 is a perspective view showing a configuration example of an optical memory card according to an embodiment of the present invention. In FIG. 1, an optical memory card 1 includes a predetermined flat (card-shaped) base material 2 and an optical storage surface 3 formed on the surface of the base material 2 with a material having good light absorption or light reflection properties. Have. Also, this optical memory card 1
Information is stored on the optical storage surface by an element 4 that causes a difference in light reflection on the optical storage surface 3. In the optical memory card 1, a protective film 5 is coated on the optical storage surface 3 to protect the optical storage surface 3 from dirt and the like.

FIG. 2 is an enlarged explanatory view showing the storage elements stored on the optical storage surface of the optical memory card. In FIG. 2, when the optical storage surface 3 of the optical memory card 1 is made of a light-reflective material, the element 4 has the following structure. That is, by removing the light-reflective substance of the optical storage surface 3 into a plurality of pits 4p, 4p,... On the orthogonal coordinate system (X-Y orthogonal coordinates) of the optical storage surface 3, Element 4 is configured.
Then, for example, a plurality of pits 4p, 4p,.
, And a row 4 of pits 4P, 4P,.
Information is stored according to the presence or absence of L, 4L,....

FIG. 3 is a partial cross-sectional view of the optical memory card of FIG. 2 along the line AA. In this figure, the optical memory card 1 shows the X-axis direction and the thickness (Z-axis) direction. In such an optical memory card 1, the element 4 forms a depression (hole) by removing the light-reflective substance of the optical storage surface 3 with a plurality of pits 4 p, 4 p,. Pits 4p, 4
The set of p,... is configured as one column 4L.
The row 4L is simply a set of pits 4p, 4p,..., And a set of the pits 4p, 4p,.
Operate as one bit, and the pits 4p, 4p,... Do not constitute any bit layout.

FIG. 4 is a partial sectional view of the optical memory card of FIG. 2 along the line BB. In this figure, the optical memory card 1 shows the Y-axis direction and the thickness (Z-axis) direction. In the figure, the element 4 is provided with rows 4L1, 4L2, 4L3,... Of pits 4P in the Y-axis direction according to information, and information is stored depending on the presence or absence of the rows 4L,. Become. For example, in FIG. 4, “column 4L1”, “no column”, “column 4L2”, “no column”, “column 4L1”
L3 "," no column "," column 4L4 "," no column "," no column "," column 4L5 "," column 4L6 "," no column ", ... are stored. Depending on the presence or absence of these columns 4,..., Predetermined information is stored.

In the above embodiment, the pit 4P
Is very small, and the row 4L is also a set of a plurality of pits 4P (four points in the figure) and is very small, so that a large amount of information can be stored.

Also, by moving the optical memory card 1 to store information on the optical storage surface 3 and read information from the optical storage surface 3, it is difficult to synchronize and read information. Therefore, the difficulty is overcome by providing a plurality of pits 4P (four points in the figure) as the same bit in the X-axis direction.

Further, in this embodiment, the optical storage surface 3
Since the information is stored by providing the pits 4P, information can be written using laser light. Therefore, in this case, it is possible to coat the protective film 5 before storing information. Also, the card
Since the existing one can be used, the card manufacturing cost is low. In addition, once the writing is completed, it cannot be erased (it is not possible to newly write after erasing), so that the security is excellent. Also, a photo or other image can be printed on the opposite side of the optical memory card from the optical storage surface.

[Modification 1 of Element] In the above embodiment,
The information is stored depending on the presence or absence of a row 4L,... Formed by a set of pits 4P formed in a hole shape on the optical storage surface 3. However, the information is not limited to the pits 4P, and may be deleted linearly. In the first modification, on the orthogonal coordinate system of the optical storage surface, the light reflecting material of the optical storage surface is linearly erased to form the element, so that there is no reflection at the erased portion; By the reflection of the part that does not disappear,
Information can be extracted.

[Modification 2 of Element] In the above embodiment,
The elements 4 are composed of rows 4L,... Formed by a collection of pits 4P formed in a hole shape on the optical storage surface 3. However, on the optical storage surface 3 made of a light reflective material, for example, The element 4a may be formed by printing a line or a plurality of points with the above substance. In this case, the protective film 5
Must be performed after the printing of the element 4a is completed. In this modified example 2, on the orthogonal coordinate system of the optical storage surface, the light reflecting surface made of a light reflecting material is printed in a line or a plurality of dots with a light absorbing material, thereby achieving the above element. Since 4a is configured, information can be extracted by the absence of reflection from the line or point portion and the reflection of the line or pointless portion.

[Modification 3 of Element] In the above embodiment, the optical storage surface 3 uses a light-reflective material.
In the above, when the optical storage surface 3a is made of a light-absorbing material, for example, a line or a plurality of points are printed on the orthogonal coordinate system of the optical storage surface 3 with a material having good light reflectivity. May constitute the element 4b. Also in this case, the protective film 5 needs to be formed after the printing of the element 4b is completed. In the third modification, on the orthogonal coordinate system of the optical storage surface, the light reflecting surface made of a light absorbing material is printed in a line shape or a plurality of dot shapes with a light reflecting material. Since the element 4b is configured, information can be extracted by the fact that there is reflection from the line or point portion and that there is no reflection from the line or pointless portion.

<Manufacture of Optical Memory Card> FIG.
FIG. 4 is an explanatory view showing an example of a method for manufacturing the optical memory card. In FIG. 5, first, the card 7 is cut from the sheet 6 provided with the optical storage surface 3 on the base material 2 (step 101). Thereby, the card 7 can be obtained. Next, the optical storage surface 3 of the card 7 having the optical storage surface 3 is linearly or a plurality of dot-shaped on the orthogonal coordinate system of the optical storage surface 3 by an element 4 that causes a difference in light reflection. And the desired information is stored (step 102). Thus, a card 7 'in which information is stored on the optical storage surface 3 is obtained. The protective film 5 is provided on the card 7 'optically stored in the above step.
(Step 103). As a result, the above-described optical memory card 1 can be obtained.

As described above, according to the manufacturing method, the optical storage surface 3
Since the desired information is stored in the form of a line or a plurality of points on the rectangular coordinate system of the optical storage surface by the element 4 that causes a difference in light reflection, a simple structure can be achieved. Can store a large amount of information. In the above step 102,
Since a device for writing information may be simple, it can be provided at low cost. Further, on the optical storage surface 3 of the optical memory card 1,
Once the information is stored, update storage is impossible, so that an optical memory card that cannot be altered can be obtained.

In the above-mentioned manufacturing method, after storing information on the optical storage surface 3, the protective film 5 is coated.
In the manufacturing method, a card provided with a predetermined flat base material, a storage surface and a protective film for protecting the optical storage surface in advance is obtained, and then the light of the card is overlaid on the optical protective film. Desired information is stored on the storage surface in a linear or multiple points on the orthogonal coordinate system of the optical storage surface with an element that causes a difference in light reflection.

Specifically, such a device may use a laser disk writing device. Further, the optical memory card 1 can also be obtained by such a second manufacturing method.

Further, in the third manufacturing method, the substrate having the optical storage surface on the surface of the substrate and the substrate is provided with a predetermined partition, and the optical storage surface is provided with an element for causing a difference in light reflection. Desired information is written by recording linearly or in a plurality of points on the rectangular coordinate system. Further, after the writing of this information is completed, the protective film is coated. Finally, the sheet is cut into a card. The optical memory card 1 can also be obtained by the third manufacturing method described above. Further, since cutting is performed after being stored in a sheet-like material, it is convenient to obtain a card or the like having the same storage content.

Further, in the fourth manufacturing method, the sheet provided with the base material, the optical storage surface and the protective film is divided into predetermined sections, and
Write desired information by recording linearly or in a plurality of points on the orthogonal coordinate system of the optical storage surface with an element causing a difference in light reflection, and then cutting the sheet into a card shape. Thus, the optical memory card 1 is obtained. Also in this manufacturing method, the cutting is performed after being stored in a sheet-like material, which is convenient when obtaining a card or the like having the same stored content.

[0038]

As described above, the method for manufacturing an optical memory card according to the present invention has the following advantages. (1) Since the elements formed on the optical storage surface are very small, an optical memory card capable of storing a large amount of information can be obtained. (2) Since an existing card material can be used, an optical memory card having a low production cost can be obtained. (3) Further, it is possible to obtain an optical memory card on which a photograph or another image can be printed on the side opposite to the optical storage surface.

As described above, the optical memory card according to the present invention has the following advantages. (1) Since the optical memory card is configured using the existing card material, the cost is low. (2) Once information is stored, it is impossible to erase and newly store information, so that forgery or falsification is impossible, and security is excellent. (3) Since reading is performed by light, reading is performed without contact, and the optical storage surface is not worn. (4) Since the elements are stored in the form of a plurality of linear points on the optical storage surface of the card and the information is stored, it is possible to reliably prevent the loss of synchronization and the inability to read due to the movement or displacement of the card. Synchronization and information retrieval are reliable. (5) Since elements can be stored on the optical storage surface of the optical memory card by various methods, it is possible to use an optical memory card appropriate for a system using the optical memory card.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration example of an optical memory card according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing, in an enlarged manner, storage elements stored on an optical storage surface of the optical memory card according to the embodiment.

FIG. 3 is a partial cross-sectional view of the optical memory card of FIG. 2 along the line AA in the embodiment;

FIG. 4 is a partial cross-sectional view of the optical memory card of FIG. 2 along the line BB in the same embodiment;

FIG. 5 is an explanatory diagram showing an example of a method for manufacturing the optical memory card in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical memory card 2 Base material 3 Optical storage surface 4 Element 4P, 4P1, 4P2, ... Bit 4L, 4L1, 4L2, ... Row 5 Protective film 6 Sheet 7, 7 'card

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yoichi Kato 5-1-1 Fukuta term, 5-1-2 Akasaka, Minato-ku, Tokyo 5B035 AA01 AA04 AA07 AA15 BB00 BB03 BB11 5D029 TA04 TA06 TA12 TA16 5D121 AA01 AA04 AA12 EE21 GG21

Claims (7)

[Claims] An optical storage surface of a card having a predetermined flat base material and an optical storage surface made of a material having good light absorbency or light reflectivity on the surface of the base material has a light reflection surface. A step of recording desired information by recording linearly or a plurality of points on the orthogonal coordinate system of the optical storage surface with an element causing a difference, and coating the protective film after optically storing in the step. And a method of manufacturing an optical memory card. 2. A card comprising a predetermined flat base material, an optical storage surface made of a material having good light absorption or light reflection properties on a surface of the base material, and a protective film for protecting the optical storage surface. Obtaining and recording the desired information by recording linearly or a plurality of points on the orthogonal coordinate system of the optical storage surface with an element that causes a difference in light reflection on the optical storage surface of the card. Storing the optical memory card. 3. A sheet having a sheet-like substrate and a sheet having an optical storage surface made of a material having good light-absorbing or light-reflecting properties on the surface of the substrate is provided with a predetermined section to generate a difference in light reflection. A step of writing desired information by recording linearly or a plurality of points on the orthogonal coordinate system of the optical storage surface with the element to be written, and coating the protective film after optically storing in the step; Cutting the sheet into a card-like form. 4. A sheet-shaped base material, an optical storage surface made of a material having good light-absorbing or light-reflecting properties on a surface of the base material, and a sheet provided with a protective film for protecting the optical storage surface. With a delimiter, a step of writing desired information by recording linearly or a plurality of points on the orthogonal coordinate system of the optical storage surface with an element causing a difference in light reflection, and writing the sheet in a card shape A method of manufacturing an optical memory card, comprising: a step of cutting. 5. A predetermined flat base material, and a light storage surface made of a material having good light absorption or light reflection properties on a surface of the base material, wherein the light storage surface has a difference in light reflection. An optical memory card characterized in that information is stored in the optical storage surface by an element that causes 6. The element according to claim 1, wherein the optical storage surface is made of a light-absorbing material, and a line or a plurality of points are formed on the orthogonal coordinate system of the optical storage surface by a material having good light reflectivity. 6. The optical memory card according to claim 5, wherein the data is written in the optical memory card. 7. The element, when the optical storage surface is made of a light-reflective material, linearly or multiple light-reflective substances on a rectangular coordinate system of the optical storage surface. 6. The optical memory card according to claim 5, wherein the data is erased in a point-like manner, or is written with a line or a plurality of points on a rectangular coordinate system of the optical storage surface with a light-absorbing substance.