KR100747601B1 - System and method for accessing RFID tag user data - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to an RFID tag user data access system and method.

2. The technical problem to be solved by the invention

The present invention manages the information required to access the user data in the external application server and the RFID reader to receive the information in a download manner, so that the RFID recognizer from the user terminal without information about the physical memory structure of the RFID tag user area from the application service perspective It is an object of the present invention to provide an RFID tag user data access system and method that enables access to RFID tag user data even if only object information is received, thereby allowing access to various types of RFID tag user data using only one RFID reader.

3. Summary of Solution to Invention

The present invention provides a method of accessing RFID tag user data, comprising: a first step of receiving information on an entire user area memory structure and information on an attribute of an object as information corresponding to a tag ID of the RFID tag; A second step of generating information on a physical storage location of an object based on information on the entire memory structure of the user area and information on attributes of an object; And a third step of performing user data access of the RFID tag by using information about the attribute of the object and information about the physical storage location of the object.

4. Important uses of the invention

The present invention is used in RFID systems and the like.

Radio Frequency Identification (RFID), RFID Tag, User Area

Description

RFID tag user data access system and method {System and method for accessing RFID tag user data}

1 is a block diagram of an RFID tag user data access system according to an embodiment of the present invention;

2 is a schematic diagram of a tag memory map, a user data logical map, a user data physical map, and mapping relationship information according to an embodiment of the present invention;

3 is a flowchart of a method for accessing RFID tag user data according to an embodiment of the present invention;

4 is a detailed flowchart illustrating a process of reading user data, which is an example of accessing user data of FIG. 3;

FIG. 5 is a detailed flowchart of a process of writing user data, which is an example of accessing user data of FIG. 3.

* Explanation of symbols on the main parts of the drawing

110: RFID tag 120: RFID recognizer

130: application server 140: directory server

The present invention relates to a radio frequency identification (RFID) technology, and more particularly, to an RFID tag user data access system and method for accessing user data of an RFID tag in an RFID system of an ultra high frequency band. It is about.

RFID is a technology for processing stored information by identifying an RFID tag attached to a thing using a radio signal, and is used for various application services (process management, logistics, payment, medical care, security, etc.). As RFID technology is developed, various RFID tags and corresponding RFID recognizers are being developed.

Meanwhile, standardization of the RFID technology in the ultra high frequency band (UHF: Ultra High Frequency) is progressing. According to the standardized ultra-high frequency RFID technology, a memory space (hereinafter, referred to as a user area) that a user can utilize is defined in a memory of an RFID tag that can be read / write, and the user area and the RFID reader are defined. A protocol for inter-radio communication (AIR protocol) is defined. Here, reading or writing data (hereinafter, referred to as user data) in the user area is referred to as user data access.

In order for the RFID reader to access the user data, the RFID reader must have information necessary for accessing the user data, that is, information about the logical / physical memory structure of the user area. However, as described above, since RFID tags are variously developed according to various application fields and developers without a unified standard, the logical / physical memory structure of the RFID tag user area to be developed also varies, and thus user data of various RFID tags. There is a problem in that it is difficult to access standardized user data, such as an RFID reader capable of accessing the RFID reader.

The present invention has been proposed to solve the above problems, by managing the information required to access the user data in the external application server and the RFID recognizer to receive the information in a download manner, the RFID reader is an RFID tag user from the user terminal RFID tag users that can access various types of RFID tag user data with only one RFID reader by accessing RFID tag user data even if only object information from an application service point of view is input without information on the physical memory structure of the area The purpose is to provide a data access system and method.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. It will also be appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

In accordance with another aspect of the present invention, there is provided an RFID tag user data access method, comprising: receiving information about an object's entire memory structure and information on an object's attributes as information corresponding to a tag ID of the RFID tag from an external source; Stage 1; A second step of generating information on a physical storage location of an object based on information on the entire memory structure of the user area and information on attributes of an object; And a third step of performing user data access of the RFID tag by using information about the attribute of the object and information about the physical storage location of the object.

The present invention also provides an RFID tag user data access system, comprising: an RFID tag storing user data in a user area of a tag memory; An application server for storing information on the entire user area memory structure of the RFID tag and information on attributes of an object; And an RFID recognizer accessing the user data of the RFID tag by generating information on the physical storage location of the object by receiving information about the entire memory structure of the user area and information on the attributes of the object from the application server.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an RFID tag user data access system according to an embodiment of the present invention.

As shown in FIG. 1, an RFID tag user data access system according to an embodiment of the present invention includes an RFID tag 110, an RFID recognizer 120, an application server 130, and a directory server 140. The various RFID tags 110 are recognized by a single RFID recognizer 120.

The RFID tag 110 stores information of the article to which the tag is attached in a memory and transmits the information of the article to the RFID recognizer 120 using radio frequency propagation. The RFID tag 110 is identified by a unique identification number (hereinafter, tag ID). RFID tag according to an embodiment of the present invention is a tag of the ultra-high frequency band, the user region is included in the tag memory. User data is stored in the user area, and the RFID tag 110 transmits previously stored user data to the RFID recognizer 120 or transmits user data transmitted from the RFID recognizer 120 according to a request of the RFID recognizer 120. Save it.

The RFID recognizer 120 recognizes the information stored in the memory of the RFID tag 110 and provides the information to a predetermined user terminal (eg, a PC). The RFID reader 120 according to the embodiment of the present invention is particularly capable of accessing user data. The RFID recognizer 120 receives information necessary for accessing user data of various RFID tags from an external application server 130 in a download manner. The information necessary for accessing the user data includes information on the entire memory structure of the user area and information on the attributes of the object. In the present specification, as an example, information on the entire memory structure of the user area is represented by a tag memory map, and information on the attributes of the object is represented by a user data logical map.

The RFID recognizer 120 generates information on the physical storage location of the object based on the information on the entire memory structure of the user area and the information on the attributes of the object provided in a download manner from the application server 130 (FIG. 2). Reference). In the present specification, as an example, information about a physical storage location of the object is represented by a user data physical map. When the user data physical map is generated, mapping relationship information for mapping the user data logical map and the user data physical map is also generated. Therefore, the RFID recognizer 120 may access the user data of the RFID tag 120 by using the information about the attribute of the object and the information about the physical storage location of the object (see FIGS. 4 and 5). Here, in the user data access, the RFID reader 120 acquires user data pre-stored in the user area of the RFID tag 110 and outputs the user data to the user terminal and reads predetermined user data input from the user terminal through the RFID tag. It is divided into a process of writing user data stored in 110. The reading / writing of the user data includes obtaining user data previously stored in the RFID tag 110 or acquiring physical location information of the user data in order to store predetermined user data in the RFID tag 110. In addition, the method includes converting user data between user data stored in the RFID tag 110 and user data input / output to the user terminal.

The application server 130 may provide information for accessing user data of the RFID tag 110, that is, information on the entire memory structure of the user area (eg, tag memory map) and information on attributes of the object (eg For example, it stores the user data logical map) and provides this information to the RFID reader 120.

The directory server 140 stores address information indicating the location of the application server 130 corresponding to the tag ID of the RFID tag 110 and provides the address information to the RFID recognizer 120.

FIG. 2 is a diagram illustrating a tag memory map representing information about an entire memory structure of a user area, a user data logical map representing information about attributes of an object, and information about a physical storage location of an object, according to an embodiment of the present invention. A schematic diagram of mapping relationship information that maps a user data physical map to represent and the user data logical map / physical map. As described above, the tag memory map and the user data logical map are stored in the application server 130, and the user data physical map is generated / managed by the RFID recognizer 120 using the tag memory map and the user data logical map. do.

As shown in FIG. 2, the tag memory map is a map representing the structure of the entire memory of the RFID tag 110 and, in particular, information about the entire memory structure of the user area. The tag memory map according to an embodiment of the present invention includes information about a bank number of a tag memory, a start address for each bank of the tag memory, a memory size, and a data storage method. Here, the data storage method can be largely divided into a directory method and a sequential method. From the tag memory map information, each bank number, physical start position, memory size, and user data storage method of the user area, which is information on the entire memory structure of the user area, can be known.

The user data logical map represents information about the attributes of the object. Here, an object is defined as user data in terms of an application service, and user data is stored and managed in units of objects. In the user data logical map, information about an object that can be stored in a user area in a certain application field is represented. The user data logical map according to an embodiment of the present invention includes each object name, size of object data, type and conversion information. Here, the conversion information is for converting data of a type (hereinafter, input / output data) that can be output to or received from the user terminal and data of a type (hereinafter, stored data) stored and managed in the RFID tag 110. Information. That is, the object data is represented in the form of stored data in the RFID tag 110 and in the form of input / output data in the user terminal, and the stored data is based on the type of the object data. The conversion information includes a conversion equation and a conversion parameter. Herein, the conversion equation may be expressed as <input / output data = f (stored data, a, b, ...)>, and a, b, ..., etc. expressed in the conversion equation are conversion parameters. The conversion information is defined according to the properties of each object.

For clarity, specific examples of such user data logical maps are shown herein. That is, it is assumed that there are three objects that can be stored in the user area in a predetermined application field. It is assumed that each object name of the user data logical map is name-1, name-2, name-3, the size of object data is 30 bytes, 20 bytes, 10 bytes, and the type of object data is char (1 byte). If the object data corresponding to name-1 is temperature data, if the conversion equation is expressed as <temperature = 10 * (receive PCM code) +90>, the conversion parameters are 10 and 90, the temperature is the input / output data, and the receiving PCM. The code becomes the stored data with the data type of char. That is, the RFID recognizer 120 converts user data by using the conversion information and object data type information.

The user data physical map represents information about the physical storage location of the object. A user data physical map is generated based on the tag memory map and the user data logical map, and among the objects that can be stored in the user area in the predetermined application field of the user data logical map, the user data physical map is currently stored in the user area of the RFID tag 110. The user data physical map is created only for the stored objects. The pre-storing may be determined based on the entire memory structure of the user area shown in the tag memory map and the attribute information of the object shown in the user data logical map.

Subsequently, when a new object is to be stored in the user area, a user data physical map for the new object is generated and stored and managed by the RFID recognizer 120. The user data physical map according to an embodiment of the present invention includes each object ID, memory start position information, memory end position information, and mask information of the object (including the previously stored object and the new object). do.

Here, the object ID may be determined corresponding to the object name according to the data storage method of the tag memory map. The memory start position information and the memory end position information of the object may include physical start positions, memory sizes, and user data storage methods for each bank of the user region derived from the tag memory map, and object data type information derived from the user data logical map. May be determined based on the like. In addition, the mask information may be determined based on object data size information of the user data logical map.

For clarity, specific examples of user data physical maps generated in correspondence with the specific examples of the user data logical map are shown herein. As described above, the RFID recognizer 120 is based on the entire memory structure of the user area shown in the tag memory map and attribute information of the object shown in the user data logical map, and the like. You can determine whether it is already stored. As a result of the determination, the object currently pre-stored in the user area of the RFID tag 110 may be named among three objects (that is, objects corresponding to name-1, name-2, and name-3) that can be stored in the user area. Assume two objects corresponding to -1 and name-3. Therefore, the user data physical map is generated only for the objects corresponding to name-1 and name-3. Hereinafter, objects corresponding to name-1, name-2 and name-3 are referred to as object 1, object 2 and object 3, respectively. For example, when the objects 1 and 3 are stored in the user area of the RFID tag 110 in a sequential manner, the IDs (Oid-1 and Oid−) of the objects 1 and 3 are sequentially corresponding to the object names. 3) is determined. Also, the actual memory start position information and end position information of the object 1 and the object 3 are determined. Herein, it is assumed that object 1, which is stored first in the user area, is stored from the physical start position of the user area, and assuming that the physical start position of the user area is 0xE000, the memory start position of the object 1 will be 0xE000. At this time, the memory end location of the object 1 will be OxE001 because the data type of the object 1 is char (1byte). Also, mask information, which is the maximum memory size allocated when objects 1 and 3 are stored in the user area, is determined based on the object data size. That is, since the data size of object 1 is 30 bytes, object 1 can be stored up to 0xE01E, so 0xE01E will be the mask value of object 1. Next, the memory start position of object 3 is 0xE01E, which is the memory end position of object 1, and in the same way, the memory end position is OxE01F because the object data type is char (1byte), and the mask value is 0xE028 because the object data size is 20 bytes. Will be decided.

That is, a user data physical map is generated using the entire memory structure of the user area shown in the tag memory map and attribute information of each object shown in the user data logical map. In addition, when the user data physical map is generated, mapping relationship information indicating a correspondence relationship between an object ID and an object name is also generated to correspond to the user data logical map and the user data physical map.

3 is a flowchart of a method of accessing RFID tag user data according to an embodiment of the present invention.

First, the RFID recognizer 120 obtains a tag ID from the RFID tag 110 (s301).

Next, the RFID recognizer 120 obtains the address of the application server 130 corresponding to the tag ID from the directory server 140 (S302).

From the application server 130 corresponding to the tag ID, the RFID recognizer 120 obtains information on the entire memory structure of the user area and information on the property of the object (S303). According to one embodiment of the invention, the tag memory map and the user data logical map may be obtained in a download manner.

Next, the RFID recognizer 120 acquires information about the entire memory structure of the user area (eg, a tag memory map) obtained in step S303 and information about attributes of an object (eg, a user data logical map). (S304) to generate information (eg, user data physical map) on the physical storage location of the object. In addition, mapping relationship information for mapping the user data logical map and the user data physical map is also generated and stored. As a result, the RFID recognizer 120 stores a user data logical map, a user data physical map, and the mapping relationship information.

The RFID recognizer 120 performs user data access of the RFID tag by using the stored user data logical map and the user data physical map (S305) (see FIGS. 4 and 5). As described above, in the user data access, the RFID reader 120 acquires user data pre-stored in the user area of the RFID tag 110 and outputs the user data to the user terminal and predetermined user data input from the user terminal. Is divided into a user data writing process for storing the RFID tag 110.

As a result, when the user data is stored in the RFID tag 110, the RFID recognizer 120 may apply the information about the entire memory structure of the user area of the RFID tag 110 and information about the attributes of the object to the application server 130. By generating information about the physical storage location of the object by receiving from), the user data of the RFID tag 110 can be accessed even with one RFID reader 120.

4 is a detailed flowchart of a process of reading user data, which is an example of accessing user data of FIG. 3.

First, when a read command for a predetermined object (user data) previously stored in the RFID tag user area is transmitted to the RFID recognizer 120 through the user terminal, the RFID recognizer 120 recognizes an object ID corresponding to the read command. (s401).

The RFID recognizer 120 obtains memory start / end location information of the object corresponding to the object ID from the user data physical map generated and stored in step S304 (S402).

Next, the RFID recognizer 120 converts the read command into a command by an AIR protocol based on the memory start / end location information of the object obtained in step s402, and converts the converted command into an RFID tag 110. It passes to (s403).

Based on the command transmitted in step S403, the RFID recognizer 120 obtains object data (stored data) from the RFID tag 110 (S404).

Next, the RFID recognizer 120 obtains the object data type and conversion information corresponding to the object name from the user data logical map downloaded and stored in S303 (S405).

Next, the RFID recognizer 120 may output the stored data acquired from the RFID tag 110 in step s404 to the user terminal using the object data type and the conversion information obtained in step s405. (S406) (see FIG. 3).

The input / output data converted in step s406 is output to the user terminal (s407).

That is, the RFID recognizer 120 obtains location information of an object from the user data physical map, obtains object data corresponding to the location information of the object from the RFID tag 110, and then stores the user data logical map information. The process of reading user data previously stored in the RFID tag 110 is terminated by converting the object data (stored data) obtained from the RFID tag 110 into input / output data.

FIG. 5 is a detailed flowchart of a process of writing user data, which is an example of accessing user data of FIG. 3.

First, when predetermined object data (input / output data, which is data that can be input from a user terminal) and a write command for the predetermined object are transmitted to the RFID recognizer 120 through the user terminal, The RFID recognizer 120 recognizes an object name corresponding to the write command (s501).

The RFID recognizer 120 obtains an object data type and conversion information corresponding to the object name from the user data logical map downloaded and stored in step S303 (S502).

The input / output data transmitted in step s501 is converted into data (stored data) in a form that can be stored in the RFID tag 110 using the object data type and conversion information obtained in step s502 (s503) (FIG. 3). Reference).

The RFID recognizer 120 recognizes the object ID corresponding to the object name, and determines whether the object information corresponding to the object ID exists in the user data physical map (S504). In the case where the user data logical map includes three object information and only two of the objects are actually stored in the user area of the RFID tag 110 as in the above-described example, the user may receive data corresponding to the object 2. In the case where the user data physical map information corresponding to the object ID (Oid-2) does not exist, the user wants to store the data corresponding to the object 1 in the object ID (Oid-1). This is the case where corresponding user data physical map information exists.

As a result of the determination, if the user data physical map information corresponding to the object ID does not exist, the user data physical map information corresponding to the object ID is generated (S505). For example, when new data corresponding to the object 2 is to be stored, the data corresponding to the object 2 may be stored at a next position of the data corresponding to the object 3 according to the sequential storage method. The object ID (Oid-2) corresponding to the object 2 is generated, the object memory start position information is 0xE028, the object memory end position information is 0xE029, and a mask value corresponding to 20 bytes is generated, respectively. Physical maps are created and stored. Therefore, while the user data physical map information is generated, the memory start / end location information where the data corresponding to the object 2 is to be stored can be known.

On the other hand, if the user data physical map information corresponding to the object ID exists as a result of the determination, the user data physical map information corresponding to the object ID is updated (S506). For example, if the user wants to store data corresponding to object 1, assuming that the memory end position OxE001 is stored by 1 byte, the memory start position of the object data to be stored is changed to 0xE001 and the memory end position is 0xE002. This allows the user data physical map information to be updated. Accordingly, the user data physical map information is updated and the memory start / end location information at which data corresponding to the object 1 is to be stored can be known.

Next, the RFID recognizer 120 generates the write command and the stored data converted in step S503 based on the memory start / end location information of the object that is generated from the user data physical map generated in step S505 or updated in step S506. The storage data is stored in the memory start / end position of the object of the RFID tag 110 by converting the command into an AIR protocol and transferring the converted command to the RFID tag 110 (S507).

That is, the RFID recognizer 120 converts the input / output data input from the user terminal into the stored data using the user data logical map, and is generated or updated according to the presence or absence of user data physical map information corresponding to the object. The user data writing process is terminated by storing the object data in the RFID tag 110 based on the object position information known from the data physical map.

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawing.

As described above, the present invention manages information required for accessing user data in an external application server and enables the RFID reader to receive the information in a download manner, thereby allowing the RFID reader to access the physical memory structure of the RFID tag user area. Even if only the object information from the application service point of view is input without any information, the RFID tag user data can be accessed, so that only one RFID recognizer can access various types of RFID tag user data.

Claims (17)

RFID tag user data access method, A first step of receiving information on an entire user area memory structure and information on an attribute of an object from outside as information corresponding to a tag ID of the RFID tag; A second step of generating information on a physical storage location of an object based on information on the entire memory structure of the user area and information on attributes of an object; And A third step of performing user data access of the RFID tag by using information on the property of the object and information on the physical storage location of the object RFID tag user data access method comprising a. The method of claim 1, Information about the entire memory structure of the user area is Represented by a tag memory map, The tag memory map, Contains the bank number of the tag memory, the start address for each tag memory bank, the memory size and the data storage method. RFID tag user data access method. The method of claim 2, Information about the property of the object, Represented by a user data logical map, The user data logical map is, Including object name, size, type and conversion information of object data RFID tag user data access method. The method of claim 3, wherein Information about the physical storage location of the object, Represented by a user data physical map, The user data physical map is Including object ID, object memory start location information, object memory end location information and mask information RFID tag user data access method. The method of claim 4, wherein The second step, Generating mapping relationship information that is corresponding information between the object ID of the user data physical map and the object name of the user data logical map. RFID tag user data access method. The method of claim 5, The second step, The user data physical map is generated only for the objects that are actually stored in the RFID tag among the objects that can be stored in the user area in a certain application field. The actual storage is determined based on the entire memory structure of the user area shown in the tag memory map and the attribute information of the object shown in the user data logical map. Information included in the user data physical map, wherein the object ID is determined corresponding to an object name according to a data storage method of the tag memory map, and memory start position information and memory end position information of the object are the tag memory map. It is determined based on the physical start position, memory size and data storage method for each bank of the user area derived from and object data type information derived from the user data logical map, wherein the mask information is object data of the user data logical map. Determined based on size information RFID User Data Access Method. The method of claim 6, The reading of user data, which is an example of accessing user data in the third step, Receiving a read command for a predetermined object (user data) previously stored in an RFID tag user area from a user terminal, and recognizing an object ID corresponding to the read command; A fifth step of obtaining memory start / end location information of an object corresponding to the object ID from the user data physical map created in the second step; Transmitting a read command to an RFID tag based on memory start / end location information of the object to obtain object data from the RFID tag; A seventh step of obtaining object data type and conversion information corresponding to the object name in mapping relation with the object ID from the user data logical map provided in the first step; And An eighth step of converting the object data obtained in the sixth step using the object data type and the conversion information obtained in the seventh step and outputting the same to the user terminal; RFID user data access method comprising a. The method of claim 6, The writing of user data, which is an example of accessing user data of the third step, A ninth step of receiving predetermined object data to be stored in an RFID tag user area and a write command for the predetermined object from a user terminal to recognize an object name corresponding to the write command; A tenth step of obtaining object data type and conversion information corresponding to the object name from the user data logical map provided in the first step; An eleventh step of converting the object data received in the ninth step using the object data type and the conversion information obtained in the tenth step; A twelfth step of determining whether user data physical map information corresponding to the object ID in the mapping relationship with the object name exists; As a result of the determination, if user data physical map information corresponding to the object ID does not exist, user data physical map information corresponding to the object ID is generated, and if user data physical map information corresponding to the object ID exists, A thirteenth step of updating user data physical map information corresponding to the object ID; And RFID tag by transmitting the write command and the object data converted in the eleventh step to the RFID tag based on the memory start / end location information of the object known from the user data physical map created or updated in the thirteenth step. Fourteenth step of storing the converted object data in RFID user data access method comprising a. RFID tag user data access system, An RFID tag storing user data in a user area of the tag memory; An application server for storing information on the entire user area memory structure of the RFID tag and information on attributes of an object; And An RFID recognizer that accesses user data stored in the user area of the RFID tag by generating information on the physical storage location of the object by receiving information on the entire memory structure of the user area and information on the attributes of the object from the application server. RFID tag user data access system comprising a. The method of claim 9, Further comprising a directory server for storing address information indicating the location of the application server, When the RFID recognizer obtains a tag ID from an RFID tag and provides the tag ID to the directory server, the directory server provides the RFID recognizer with the address information of an application server corresponding to the tag ID. RFID tag user data access system. The method of claim 10, Information about the entire memory structure of the user area is Represented by a tag memory map, The tag memory map, Contains the bank number of the tag memory, the start address for each tag memory bank, the memory size and the data storage method. RFID tag user data access system. The method of claim 11, Information about the property of the object, Represented by a user data logical map, The user data logical map is, Including object name, size, type and conversion information of object data RFID tag user data access system. The method of claim 12, Information about the physical storage location of the object, Represented by a user data physical map, The user data physical map is Including object ID, object memory start location information, object memory end location information and mask information RFID tag user data access system. The method of claim 13, The RFID recognizer, Generating mapping relationship information that is corresponding information between the object ID of the user data physical map and the object name of the user data logical map. RFID tag user data access system. The method of claim 14, The RFID recognizer, In a certain application field, a user data physical map is generated only for an object that is actually stored in an RFID tag among objects that can be stored in a user area. The actual storage is determined based on the entire memory structure of the user area shown in the tag memory map and the attribute information of the object shown in the user data logical map. As the information included in the user data physical map, the object ID is determined corresponding to an object name according to a data storage method of the tag memory map, and memory start position information and memory end position information of the object are the tag memory map. The physical start position of each bank of the user area, a memory size, and a data storage method derived from and determined based on the object data type information derived from the user data logical map, the mask information is the object data of the user data logical map By determining based on the size information, To generate the user data physical map RFID user data access system. The method of claim 15, The RFID recognizer, Receive a read command for a predetermined object (user data) previously stored in the RFID tag user area from the user terminal to recognize the object ID corresponding to the read command,  Obtaining memory start / end location information of an object corresponding to the object ID from the user data physical map, Transmitting the read command to the RFID tag based on the memory start / end location information of the object to obtain object data from the RFID tag, Obtains an object data type and conversion information corresponding to an object name mapped to the object ID from the user data logical map; By converting the object data obtained from the RFID tag by using the object data type and conversion information and output it to the user terminal Performing user data reads RFID user data access system. The method of claim 15, The RFID recognizer, Receives a predetermined object data to be stored in the RFID tag user area and a write command for the predetermined object from the user terminal to recognize the object name corresponding to the write command, Obtain object data type and conversion information corresponding to the object name from the user data logical map, Converts the object data received from the user terminal using the object data type and the conversion information, It is determined whether user data physical map information corresponding to the object ID in the mapping relationship with the object name exists. As a result of the determination, if user data physical map information corresponding to the object ID does not exist, user data physical map information corresponding to the object ID is generated, and if user data physical map information corresponding to the object ID exists, the Update the user data physical map information corresponding to the object ID, Transmitting the write command and the converted object data to an RFID tag based on the memory start / end location information of the object known from the generated or updated user data physical map, and storing the converted object data in the RFID tag. Performing user data writes RFID user data access system.

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