JP2001134724A - Method and device for reading/writing data, and recording medium recorded with processing program therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of improving efficiency in the read/ write of data to each of plural recording media attached to an object. SOLUTION: This data reading/writing method for performing the read or write of data to specified one of plural recording media attached to the object has a step for discriminating whether a reader/writer for performing read/write to the recording medium is located within a range capable of read/write only to specified one of plural recording media or not and a step for performing read/write through the reader/writer to the relevant recording medium when that reader/writer is located within the range capable of read/write only to the specified recording medium.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data reading / writing device for reading / writing data from / to a plurality of recording media, and more particularly to a data reading / writing device for a plurality of non-contact readable / writable recording media attached to a product. The present invention relates to a technology effective when applied to a data read / write device that performs read / write of data according to the directional characteristics of a recording medium.

[0002]

2. Description of the Related Art Conventionally, products such as bar codes and I
A recording medium such as a C tag is added, and production management and sales / distribution management are performed using data indicated by the code and data on the recording medium. In order to perform such advanced production management, sales / distribution management, and other management such as maintenance, service, and recycling, add multiple bar codes and multiple IC tags to the product. Therefore, it is necessary to increase the amount of data represented by codes and recording media.

Conventionally, when a plurality of barcodes indicating different types of data are added to the same product for an optical recording system such as a barcode, necessary data is recorded. The selected one barcode is visually selected from a plurality of barcodes, and the data is read by applying a barcode reader / writer. For this reason, it was necessary to determine which bar code a person should read.

[0004] In addition, for a recording medium that performs read / write without contact, for example, an object using an IC tag,
When a plurality of IC tags each storing different types of data are attached to the same surface of the same product, a distance is provided between each IC tag, and one of the plurality of IC tags is visually checked. Had selected and read.

[0005] As still another method, when a plurality of IC tags each storing different types of data are pasted on the same surface of the same product and close to each other, the IC tag reader / writer is directed to a plurality of sheets at the same time. A method has been used in which a plurality of pieces of data are simultaneously read and identified as separate data by a logic function of the IC tag reader / writer.

[0006] A method and system for managing articles without complicated procedures by transmitting various kinds of information between each site in real time, and a simple and reusable tag used in this system are described. , JP
08-133424. The outline is that an IC tag that transmits self-contained information by the electromagnetic wave sent from the system is attached to the article, the data of the IC tag is registered in association with the article, and the article with the IC tag attached is unloaded. At the same time, the correspondence between the registered IC tag data and the article is transmitted and received, and when the article with the IC tag attached is carried in / out, the correspondence between the registered IC tag data and the article is confirmed. Is what you do.

[0007]

When a plurality of recording media are added to a product in the above-mentioned conventional method, one of the plurality of recording media is selected and read. There is a problem that it is necessary to determine whether to select a medium.

In the conventional method, when a plurality of recording media are read simultaneously, a malfunction occurs due to the transmission and reception of a plurality of signals from the plurality of recording media, and the individual data are classified and recognized. Since a complicated logical function is required, it takes time to extract necessary data when classifying and identifying, and there is a problem that high-speed processing becomes difficult.

An object of the present invention is to solve the above problem and provide a technique capable of improving the efficiency of reading / writing data from / to each of a plurality of recording media attached to an object. Is to do.

[0010]

SUMMARY OF THE INVENTION The present invention relates to a data reading / writing apparatus for reading or writing data from or to a specific recording medium among a plurality of recording media attached to an object. Read / write is performed only on a specific recording medium of the medium.

In the present invention, a plurality of recording media such as IC tags are attached to an object such as a product to be managed such as production management so that a range in which reading / writing can be performed only on each recording medium is generated. For example, for a product x,
One recording medium is attached to each of the surfaces in the y and z directions, and a plurality of recording media are arranged so that the directions indicated by the directional characteristics are orthogonal to each other. As a result, in the direction of the surface on which each recording medium is attached, the directivity of the specific recording medium attached to that surface is increased, and reading / writing on only that recording medium becomes possible.

Next, a specific recording medium among a plurality of recording media attached to the product is selected as a read / write processing target, and a reader / writer for reading / writing to / from the recording medium is selected. Is moved within a range in which reading / writing to only the recording medium is possible.

[0013] Then, the reader / writer is set within a range in which reading / writing to / from only the selected specific recording medium is possible.
It is determined whether or not there is a writer, and as a result of the determination, when there is a reader / writer within a range where reading / writing is possible only for the specific recording medium, reading / writing to the recording medium via the reader / writer is performed. I do.

As described above, according to the data reading / writing device of the present invention, reading / writing is performed only on a specific recording medium among a plurality of recording media. It is possible to improve the efficiency of reading / writing data from / to each of the recording media.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Data reading / reading from / to an IC tag as a plurality of recording media attached to a product will be described below.
A data read / write device according to an embodiment for performing writing will be described.

FIG. 1 is a diagram showing a schematic configuration of a data read / write device 100 of the present embodiment. As shown in FIG. 1, the data read / write device 100 of the present embodiment
Are a CPU 101, a memory 102, a magnetic disk device 103, an input device 104, and a display device 10.
5, CD-ROM device 106, reader / writer 10
7, IC tag position information 108, and read / write data 109.

The CPU 101 is a device for controlling the operation of the data read / write device 100 as a whole. The memory 102 is a storage device for loading various processing programs for reading / writing data from / to a plurality of IC tags attached to a product.

The magnetic disk device 103 is a storage device for storing the various processing programs and various data used for reading and writing. The input device 104 is a device for inputting an operation instruction to the data read / write device 100.

The display device 105 is a device for displaying the operation status of the data read / write device 100. The CD-ROM device 106 is a device that reads the contents of a CD-ROM in which the various processing programs are recorded.

The reader / writer 107 is a device for transmitting / receiving signals to / from a specific IC tag among a plurality of IC tags attached to a product to read / write data in a non-contact manner. The IC tag position information 108 represents coordinates indicating a mounting position of each IC tag on a product, a mounting surface indicating a surface mounted on the product, and numerical data indicating a range in which reading / writing can be performed on only the IC tag. Information. The read / write data 109 is data obtained from the IC tag as a result of reading or data to be written to the IC tag.

The data read / write device 100
Has a position determination processing unit 110 and a read / write processing unit 111.

The position determination processing unit 110 includes a reader / writer 107 that reads / writes data from / to an IC tag.
This is a processing unit that determines whether or not reading / writing of only a specific IC tag among a plurality of IC tags is possible.

When the reader / writer 107 is within a range in which reading / writing to only a specific IC tag is possible, the reading / writing processing unit 111 reads / writes to the IC tag via the reader / writer 107. Is a processing unit that performs

The data read / write device 100 is connected to a position determination processor 110 and a read / write processor 11.
After the program for functioning as 1 is recorded on a recording medium such as a CD-ROM and stored on a magnetic disk or the like,
It shall be loaded into memory and executed. The recording medium for recording the program may be a recording medium other than the CD-ROM.

FIG. 2 is a diagram showing the directivity characteristics of the sensitivity of the IC tag of this embodiment. FIG. 2 shows the directivity characteristic of the sensitivity related to reading / writing of the normal IC tag 11, and shows that data can be read / written to / from the IC tag 11 from the inner range surrounded by the curve. .

As shown in FIG. 2, assuming that the X axis is parallel to the plane of the IC tag 11 and the Y axis is vertical,
It can be seen that the sensitivity is maximum in the Y-axis direction perpendicular to the plane of the C tag 11, and is minimum in the X-axis direction. The sensitivity in the back direction differs depending on the structure of the IC tag. However, in the present embodiment, a case where the sensitivity does not have the back direction will be described. Note that the case of an IC tag also having sensitivity in the back direction can be inferred from the description of the present embodiment, and a description thereof will be omitted.

Since the practical direction of the reader / writer 107 does not always coincide with the Y axis, for example, when reading from the direction of the read / write direction 12, the range of sensitivity in which reading or writing can be performed is shown in FIG. OA showing
That is, it corresponds to the length of a. That is, data is read from a certain point on the line segment a.

At this time, the range of sensitivity in which reading or writing can be performed as viewed from the reading / writing direction 13 perpendicular to the reading / writing direction 12 corresponds to the length of OB, that is, the length b in the drawing. That is, data cannot be read from this direction unless it is from a certain point on the line segment b.

At this time, since a> b, the reader / writer 107 is installed at an intermediate distance between the lengths of a and b, and if the characteristics of the reader / writer 107 are properly selected, reading / writing is performed. Reading and writing can be performed from the direction 12 and reading cannot be performed from the reading / writing direction 13.

FIG. 3 is a view showing the appearance of a product to which the recording medium of the present embodiment is attached. FIG. 3 shows a case in which IC tags 21 to 23 are pasted as one recording medium on a surface in the x, y, and z directions for a certain product.

As shown in FIG. 3, by attaching the IC tags 21 to 23 to the surface of the product in the x, y, and z directions, the directions indicating the directional characteristics are orthogonal to each other, and the readout from the IC tags 21 to 23 is performed. The IC tags 21 to 23 can be arranged so that the writable ranges do not overlap as much as possible. In this manner, by attaching each recording medium in a direction in which the directions indicated by the directional characteristics are orthogonal to each other, it is possible to secure a range in which reading / writing can be performed only on a specific recording medium. In addition, IC
Tags 21 to 23 read / write only from each recording medium.
What is necessary is just to arrange | position on a product so that the range in which writing is possible may be sufficient, and you may arrange | position so that the direction which each directional characteristic shows may form another angle.

Here, the contents of the data described in the IC tags 21 to 23 include, for example, the data mainly for production control, the IC tag 21 attached so as to be read in the x direction, and the data in the y direction. The IC tag 22 attached so that it can be read includes data mainly for maintenance, service, and recycling, and the IC tag 2 that is attached so that it can be read from the z direction.
Example 3 is a usage example of recording data mainly for sales and distribution management.

Considering the case where the life cycle management of a product is performed by using the data recorded in the IC tags 21 to 23 in the manufacturing industry, the maintenance / service industry, and the distribution / sales industry, the types of data mainly used are as follows. In contrast, usually, it is often sufficient to read at least one of these three recording media. FIG. 4, FIG. 5, and FIG. 6 schematically illustrate the structure of data recorded on these recording media.

FIG. 4 is a diagram showing an example of the data contents of the IC tag 21 on the x-plane according to the present embodiment. That is, the data content of the IC tag 21 is as shown in FIG. 4 and is composed of a “product ID” for specifying the product type, the product name, the serial number, and the like, and “production management data”.

FIG. 5 is a diagram showing an example of the data content of the IC tag 22 on the y-side according to the present embodiment. The data content of the IC tag 22 includes a “product ID” for specifying a product type, a product name, a serial number, and the like, and “maintenance / service / recycling management data”.
It consists of.

FIG. 6 is a diagram showing an example of the data content of the IC tag 23 on the z-plane according to this embodiment. The data content of the IC tag 23 is composed of “product ID” for specifying the product type, product name, serial number, and the like, and “sales / distribution management data”. Here, it is assumed that the same ID is given to the product ID of the IC tags 21 to 23 so as to recognize that they are the same individual.

FIG. 7 is a flowchart showing a processing procedure of the data read / write device 100 of this embodiment. In step 701, the data read / write device 1
The position determination processing unit 110 moves the product to which a plurality of recording media are attached to a predetermined position where reading / writing is performed.

In step 702, a specific recording medium of the plurality of recording media is selected as a read / write processing target. For example, when performing production control, the IC tag 2
1 is selected as a processing target, and its IC tag position information 10 is selected.
From 8, the coordinates indicating the mounting position of the IC tag 21, the mounting surface, and a and b are read.

In step 703, the reader / writer 107 is moved to a range where only the IC tag 21 can be read / written. For example, the distance from the IC tag 21 on a line passing through the IC tag 21 perpendicular to a mounting surface indicating a plane on the product to which the IC tag 21 is mounted is a> b.
The reader / writer 107 is moved to a position within the range.

In step 704, the read / write processing unit 111 compares the position of the reader / writer 107 for reading / writing to the IC tag 21 with the range in which reading / writing to the IC tag 21 alone is possible. It is determined whether or not the reader / writer 107 is within a range in which reading / writing can be performed on only 21.

If the result of the determination in step 704 is that the reader / writer 107 that reads / writes from / to the IC tag 21 is within the range in which reading / writing from / to only the IC tag 21 is possible, the process proceeds to step 705, where the IC tag 21 is read. If it is not within the range in which reading / writing to only 21 is possible, wait until the reader / writer 107 is moved into that range.

In step 705, the reader / writer 10
7, the read / write to / from the IC tag 21 is performed, and the read “product ID” and “production management data” data are displayed on the display device 105 and stored in the read / write data 109 of the magnetic disk device 103. , Execute processing associated with production management. When performing maintenance / service / recycling management or sales / distribution management after the production management processing, the IC tag 22 or the IC tag 23 is selected as a processing target and the same processing as described above is performed.

In step 706, it is determined whether reading / writing has been completed for all products. If reading / writing has not been completed for all products, the process returns to step 701 to read all products. When the writing is completed, the process is terminated.

As described above, in this embodiment, since reading / writing is performed only on a specific recording medium among a plurality of recording media, a plurality of data read simultaneously from a plurality of recording media are separately recognized. It does not require complicated logical functions such as.

In the above-described processing, the reader / writer 107 is moved by the data read / write device 100 within a range where reading / writing to only a specific recording medium is possible.
May be moved.

In this case, if the data contents of the IC tags 21 to 23 are as shown in FIGS. 4 to 6, if the data read by chance is not the desired data, necessary data can be obtained. Absent. Therefore, in order to avoid this, the locations of other data items may be clearly indicated as location information in each of the IC tags 21 to 23. FIG. 8, FIG. 9, and FIG. 10 schematically illustrate the recorded data in this case.

FIG. 8 is a diagram showing an example of data contents (including items described on other surfaces) of the IC tag 21 on the x surface according to the present embodiment. FIG. 9 is a diagram illustrating an example of the data content of the IC tag 22 on the y-side (including the description items on other sides) according to the present embodiment. FIG.
FIG. 9 is a diagram illustrating an example of data contents of the z-plane IC tag 23 (including items described on other planes) according to the present embodiment. Regarding the IC tag 21 attached so as to be read from the x direction, the “product ID” and the “production management data” are the same, but this data is “x-plane data” as “the data of the other-side IC tag”. It is written that there is data of “maintenance / service / recycling” on the y-plane and that of “sales / distribution management” on the z-plane. The same applies to the data contents of the IC tags 22 and 23.

When such a recording medium is used, in step 705, after reading / writing to / from the specific recording medium via the reader / writer 107, the specific recording medium from which the reading / writing has been performed is read out. The location information indicating the recording medium on which each data is recorded is read and displayed on the display device 105 to assist the operator.

By doing so, if the data read by chance is not the desired data, it is possible to display the contents of the previously read data and the location of other data items on the display device 105. Can immediately proceed to the process of reading the required desired data.

In mounting the recording medium used in the data read / write device 100 of this embodiment,
In order to reduce a work error when reading / writing data, an IC tag which records location information of each data in the IC tags 21 to 23 may be attached to the product.

FIG. 11 is a view showing the appearance of a product to which a recording medium on which data location information of this embodiment is recorded is affixed. As shown in FIG. 11, when a plurality of IC tags 92 to 94 are used, an IC tag 91 is attached to a predetermined specific part, and the same data as the above-described IC tags 21 to 23 is written on the IC tag 91. Attachment information of the recorded IC tags 92 to 94 and information of data items are recorded.

FIG. 12 is a diagram showing an example of the data contents of the IC tag 91 of this embodiment. When reading / writing the IC tags 92 to 94, if the data of the IC tag 91 is first read, the location of each data can be known in advance, so that the data read by chance happens to be the desired data. It is possible to prevent a work error of not being. The contents of the data of the IC tags 92 to 94 are the same as those in FIGS. 4, 5, 6 or 8, 9, and 10, respectively, and the description is omitted.

Also, IC tags 21 to 2 on the x, y and z planes
3, the location information of the data of the other IC tags 22 and 23 on the y and z planes is additionally described in a specific one of the IC tags 21 on the x side, for example. It may be used for the same purpose as the IC tag 91 described above. In this case, it is possible to prevent a work error that the data read by chance is not the desired data without increasing the number of recording media.

In addition, when the recording medium used in the read / write device of the present embodiment is attached, the recording medium may be added to the other side of the product in consideration of the workability when reading / writing data. good.

FIG. 13 is a diagram showing the appearance of a product having a recording medium adhered to six surfaces of the present embodiment. As shown in FIG. 13, when the present embodiment is applied to a product having a large shape, IC tags 111 to 113 and x ′, which can be read / written from x, y, and z directions, are provided at locations separated from each other.
IC tags 114 to 116 that can be read / written from the y ′ and z ′ directions may be attached.

As described above, in the present embodiment, the reader / writer 107 is used as a set, and the reader / writer 107 or the product is sequentially moved in the x, y, and z directions to read sequentially. Although data can be read or written only from a specific recording medium among a plurality of recording media, a plurality of readers / writers can be used.

FIG. 14 shows the x plane, y plane, z plane,
FIG. 2 is a diagram illustrating a configuration of a reader / writer that can simultaneously read and write. As shown in FIG. 14, reader / writers 121 to 12
3 is fixed to the structure in advance in the x, y, and z directions, and the reader / writers 121 to 123 having logically desired data are selected and read based on the read result. good.

Since the IC tag is capable of reading / writing data, the present embodiment is not limited to reading, and can be implemented in common for reading / writing. In this example, x, y and z of 3
Was explained in terms of the surface, for example, by six IC tags,
In addition to x, y, z, -x, -y, and -z, the total can be extended to six surfaces. Further, the present invention can be applied to arbitrary plural surfaces out of the six surfaces. Even when the IC tag has a structure that allows reading / writing on both sides, its function can be inferred from this description, and a detailed description is omitted.

As described above, in the present embodiment, when a plurality of recording media are attached and the recorded contents are used in a divided manner, reading / writing is performed only on a specific recording medium to meet the purpose. Data read / write can be performed in a short time, the read / write time can be reduced, and workability can be improved.

Also, since the capacity of data that can be recorded on one recording medium is limited, it is possible to increase the total data capacity by recording data on a plurality of recording media separately for each data group. It is. Furthermore, even if one of the recording media is damaged, at least the data described in common may be replaced by another recording medium, and the reliability can be improved.

As described above, according to the data reading / writing device of the present embodiment, reading / writing is performed only on a specific recording medium among a plurality of recording media. It is possible to improve the efficiency of reading / writing data from / to each of the recording media.

[0062]

According to the present invention, since reading / writing is performed only on a specific recording medium among a plurality of recording media, it is possible to transfer to individual recording media among a plurality of recording media attached to an object. It is possible to improve the efficiency of reading / writing data.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a schematic configuration of a data read / write device according to an embodiment.

FIG. 2 is a diagram illustrating a directional characteristic of sensitivity of the IC tag according to the embodiment;

FIG. 3 is a diagram illustrating an appearance of a product to which the recording medium according to the embodiment is attached.

FIG. 4 is a diagram illustrating an example of data content of an IC tag 21 on an x-plane according to the present embodiment.

FIG. 5 is a diagram illustrating an example of data contents of a y-side IC tag 22 according to the present embodiment.

FIG. 6 is a diagram illustrating an example of data contents of a z-plane IC tag 23 according to the present embodiment.

FIG. 7 is a flowchart showing a processing procedure of the data read / write device of the embodiment.

FIG. 8 is a diagram illustrating an example of data contents (including items described on other surfaces) of the IC tag 21 on the x-plane according to the present embodiment.

FIG. 9 is a diagram illustrating an example of data contents (including items described on other surfaces) of the IC tag 22 on the y surface according to the present embodiment.

FIG. 10 is a diagram illustrating an example of data contents of a z-plane IC tag 23 (including items described on other planes) according to the present embodiment.

FIG. 11 is a diagram illustrating an appearance of a product to which a recording medium on which data location information of the present embodiment is recorded is attached.

FIG. 12 is a diagram illustrating an example of data content of an IC tag 91 according to the present embodiment.

FIG. 13 is a diagram illustrating an appearance of a product having a recording medium adhered to six surfaces according to the embodiment.

FIG. 14 is a diagram illustrating a configuration of a reader / writer capable of simultaneously reading and writing data on an x-plane, a y-plane, and a z-plane according to the embodiment.

[Explanation of symbols]

100 data read / write device, 101 CP
U, 102: memory, 103: magnetic disk drive, 10
4 input device, 105 display device, 106 C
D-ROM device, 107 ... reader / writer, 108 ... I
C tag position information, 109 read / write data,
110: position determination processing unit, 111: read / write processing unit, 11: IC tag, 12: read / write direction, 13: read / write direction, 21 to 23: IC
Tags, 91: IC tag, 92 to 94: IC tag, 111
... 113 ... IC tag, 114-116 ... IC tag, 12
1-123: Reader / writer.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shuji Soga 890 Kashimada, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture Inside Hitachi, Ltd.System Development Division (72) Hirotaka Obata 890 Kashimada, Sayuki-ku, Kawasaki-shi, Kanagawa Hitachi, Ltd. F-term in the system development headquarters (reference) 5B035 BB09 BC04 CA23 5B058 CA15 KA06 KA24 YA01

Claims (5)

[Claims] 1. A data read / write method for reading / writing data from / to a specific recording medium among a plurality of recording media attached to an object, wherein the reader / writer reads / writes to / from the recording medium. Determining whether the read / write operation is performed only in a specific recording medium of a plurality of recording media; and determining whether the read / write operation is performed only in the specific recording medium. Reading / writing to / from the recording medium via the reader / writer when there is a data writer / writer. 2. The data read / write method according to claim 1, wherein the plurality of recording media are mounted so that directions indicated by directional characteristics thereof are orthogonal to each other. 3. The method according to claim 1, further comprising the step of reading and displaying location information indicating a recording medium on which each data is recorded from the read / written recording medium. A data read / write method described in 4. A data reader / writer for reading / writing data from / to a specific recording medium among a plurality of recording media attached to an object, wherein the reader / writer reads / writes to / from the recording medium. A position determination processing unit that determines whether the read / write operation is within a range in which reading / writing can be performed only on a specific recording medium among a plurality of recording media; And a read / write processing unit for reading / writing to / from the recording medium via the reader / writer when there is a reader / writer therein. 5. A computer-readable recording device that records a program for causing a computer to function as a data read / write device that reads or writes data from or to a specific recording medium among a plurality of recording media attached to an object. In a possible recording medium, a position determination process for determining whether or not a reader / writer that reads / writes to / from a recording medium is within a range where reading / writing to only a specific recording medium among a plurality of recording media is possible. And a read / write processing unit that reads / writes to / from the recording medium via the reader / writer when the reader / writer is in a range where reading / writing is possible only for the specific recording medium. That you have recorded a program to make Recording medium characterized.