JP5135547B2 - RF tag reading device, RF tag reading method, server, RF tag reading system and program - Google Patents

Description

  The present invention relates to an RF tag reading device, an RF tag reading method, a server, an RF tag reading system, and a program that read various types of RF tags.

  Currently, many types of RF tags (hereinafter referred to as RFID tags (Radio Frequency Identification tags) unless otherwise specified) are used for products handled in homes and small stores. Is also expected to increase. The RF tag reader / writer device used in homes and small stores is compatible with many types of RF tags, can easily add types of usable RF tags, and needs to read and write to many types of RF tags at once. .

  As a related technique, Patent Document 1 discloses a method for simplifying the configuration of an RF tag reader / writer. In the technique of Patent Document 1, a wireless communication device connected to a host device that outputs instruction information of an RFID recording medium has a plurality of antenna mechanisms that transmit and receive a transmission signal for the RFID recording medium and a reception signal from the RFID recording medium. It is provided for each communication specification of the recording medium. The wireless communication apparatus includes signal processing means for generating a transmission signal and analyzing a received signal based on a communication specification indicated by the instruction information, an antenna mechanism for transmitting the transmission signal, and an antenna mechanism for receiving the received signal. And a control mechanism having antenna switching means for performing selection.

  Patent Document 2 describes a wireless information processing apparatus that shortens a series of operation processing times and efficiently switches antennas. The technique of Patent Document 2 receives an antenna designation command from a host when the reader / writer device (R / W) is powered on, and the R / W stores antenna control information in a memory. When the R / W receives the power supply command, the R / W outputs an electromagnetic wave from the antenna designated to operate first with the antenna control information stored in the memory. Next, when a card read command is received, it is determined whether or not the first antenna operates based on the antenna control information in the memory, and in the case of setting to operate, a read command for the wireless card is output from the first antenna. Similarly, it is determined whether the second and third antennas operate. If the operation is set to operate, a read command is output from the second and third antennas.

  Patent Document 3 describes an RF tag signal receiving device that can recognize an RF tag even when a response from the RF tag is interrupted. The RF tag signal receiving device of Patent Document 3 includes a demodulator that demodulates a baseband signal according to a communication protocol, a remaining signal memory that stores an input signal after the signal that could not be demodulated, and data that infers the next data from the communication protocol. A determination unit; a signal pattern storage unit that stores the waveform pattern of the basic waveform in the communication protocol; and a signal comparison unit that searches the signal pattern storage unit for a basic waveform that matches the waveform pattern of the signal in the remaining signal memory. In addition, a data determination unit that determines whether the data inferred by the data determination unit matches the data of the basic waveform searched by the signal comparison unit, and the signal stored in the remaining signal memory based on the determination result of the data determination unit A signal subtracting unit that reads an original signal having the same length as the signal length of the basic waveform and retransmits the original signal to the demodulating unit.

  Patent Document 4 describes a communication device that can easily cope with update / change of a plurality of wireless tags and a plurality of host devices. In the communication device of Patent Document 4, a plurality of communication modules that communicate with an external device in a wired or wireless manner are connected to each other via a transmission path. Each of the plurality of communication modules holds its own identification information and functional information related to communication. Furthermore, at least one of the communication modules acquires identification information and function information related to the other plurality of communication modules, and selects a communication module that communicates with an external device based on the acquired identification information and function information.

Patent Document 5 describes an information storage medium and an access device that can be used in various ways. In the technique described in Patent Document 5, first, the portable reader / writer outputs an access request command as a radio wave by using a carrier wave in three types of frequency bands. The wireless IC tag receives an access request command using any one carrier wave, generates a tag type transmission command, and outputs it. The portable reader / writer determines a frequency band and a protocol based on the received tag type, and a free access protocol between the portable reader / writer and the wireless IC tag based on the determined frequency band and protocol. , Processing by a two-way authentication protocol or a one-way authentication protocol is performed. The portable reader / writer outputs an input / output response.
JP 2006-157593 A JP 2001-273467 A JP 2006-319730 A JP 2008-003822 A JP 2001-291079 A

  FIG. 18 shows a configuration of an RF communication system of a related technique described in Patent Document 1. The RF communication system of Patent Document 1 includes a host computer 100, a reader / writer 101, an RF tag 105, and a specification server 107. In the host computer 100, an application program that instructs the RF tag 105 to be detected to read and write data operates. The reader / writer 101 is a wireless communication device that reads and writes data from and to the RF tag 105 in accordance with instructions from the host computer 100. The specification server 107 stores a program 108 that describes control means for wireless communication between the RF tag 105 and the reader / writer 101.

  The reader / writer 101 includes a command interpreter 102, a tag driver interpreter 103, an antenna unit 104, and a specification download unit 106. The command interpreter 102 interprets an instruction from the host computer 100 and returns an execution result. The tag driver interpreter 103 acquires the program 108 and controls the antenna module 104 based on the interpretation of the command interpreter 102. The specification download unit 106 receives the request from the tag driver interpreter 103 and acquires the program 108 from the specification server 107. The antenna unit 104 includes an antenna or the like for performing wireless communication in each frequency band.

  The tag driver interpreter 103 includes a program memory 109, a DSP (digital signal processor) 110, and an antenna switching unit 111. The program memory 109 stores the program 108. The DSP 110 executes an acquisition request for the program 108 to the specification download unit 106 and the program 108 in accordance with an instruction from the command interpreter 102. The antenna switching unit 111 controls switching of the antenna module.

  When performing wireless communication, each time the downloaded program 108 is loaded into the program memory 109, ON / OFF control for switching the antenna modules 104A and 104B used for wireless communication is performed, so that the antenna module operates stably. A waiting time is generated until it becomes a state and communication can be started. If the number of programs increases to support multiple types of RF tags, the waiting time increases in proportion to the number of types, and the time until the target tag is detected becomes longer, resulting in a decrease in tag reading efficiency. Become prominent. In addition, downloading of the program from the specification server 107 and loading into the program memory 109 are repeated, and waiting time such as establishment of communication accompanying communication between the specification server 107 and the reader / writer 101 also occurs, and tag reading efficiency is increased. It will cause the decrease.

  In a general RF tag reader / writer system, in order to add a corresponding RF tag type, a program is downloaded and switching of an antenna module or the like is controlled. In order to control the ON / OFF of the antenna module each time one program is executed, if the number of programs to be executed increases, there is a problem that the waiting time for switching the antenna module for communication increases.

  In addition, since the program is downloaded every time the program is changed and executed, increasing the number of programs increases the communication overhead time for downloading the program and increases the time until the RF tag is detected. It was necessary to place a limit on the types of RF tags that could be detected at one time.

  The present invention has been made in view of the above-described circumstances, and the number of types of RF tags has increased by efficiently executing a program for controlling a large number of radios necessary to support various types of RF tags. Even in such a case, an object is to provide an RF tag reading device, an RF tag reading method, an RF tag reading program, a server, and an RF tag reading system that suppress an increase in RF tag detection time.

An RF tag reading device according to a first aspect of the present invention includes:
An RF tag reader capable of reading RF tags of two or more different communication standards,
Storage means for storing an RF tag reading processing program of two or more communication standards;
From the server holding the reading processing program corresponding to each of a plurality of communication standards for reading an RF tag, the number of reading processing programs that can be stored in the storage unit are acquired in a lump and stored in the storage unit. Receiving means;
A reading unit that performs the reading process of the RF tag by executing the reading processing program stored in the storage unit;
It is characterized by providing.

The server according to the second aspect of the present invention is:
Holding means for holding a reading processing program corresponding to each of a plurality of communication standards for reading an RF tag;
Of the read processing programs held in the holding means, the number of the read processing programs that can be stored in the RF tag reading device is collectively collected into an RF tag reading device capable of reading RF tags of two or more different communication standards. A transmission means for transmitting;
It is characterized by providing.

An RF tag reading system according to a third aspect of the present invention is:
An RF tag reader according to a first aspect of the present invention;
A server according to a second aspect of the present invention;
A communication network for communicatively connecting the RF tag reader and the server;
It is characterized by providing.

An RF tag reading method according to a fourth aspect of the present invention includes:
An RF tag reading method of an RF tag reading apparatus capable of storing a program for performing an operation of reading RF tags of two or more different communication standards,
A receiving step of collectively acquiring and storing a number of reading processing programs that can be stored in the RF tag reading device from a server holding a plurality of reading processing programs;
A reading step of executing a reading process of the RF tag by executing the reading processing program stored in the receiving step;
It is characterized by providing.

A program according to the fifth aspect of the present invention is:
Computer
Storage means for storing an RF tag reading processing program of two or more communication standards;
From the server holding the reading processing program corresponding to each of a plurality of communication standards for reading an RF tag, the number of reading processing programs that can be stored in the storage unit are acquired in a lump and stored in the storage unit. Receiving means;
A reading means for executing a reading process of the RF tag by executing the reading processing program stored in the storage means;
It is made to function as.

  According to the RF tag reading device, RF tag reading method, RF tag reading program, server, and RF tag reading system of the present invention, it is possible to efficiently execute a large number of programs necessary for supporting various types of RF tags. Even when the types of RF tags increase, it is possible to prevent the RF tag detection time from becoming long.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or equivalent part in a figure, and the description is not repeated. Note that although an RF tag read / write system is described in the embodiment, the present invention can also be applied to an apparatus having only a function of reading an RF tag. Note that when information is written to the RF tag, reading processing is often performed in order to confirm information before writing or written information.

(Embodiment 1)
FIG. 1 is a block diagram showing a configuration example of the entire RF tag read / write system according to Embodiment 1 of the present invention. The RF tag read / write system includes a host computer 1, a reader / writer 2, an RF tag 3, and a specification server 4. The reader / writer 2 includes a controller 6 and an antenna unit 7. The controller 6 includes a specification download unit 8, a command interpreter 9, and a tag driver interpreter 10. The antenna unit 7 includes antenna modules 7A, 7B, etc. corresponding to RF tags 3A, 3B, etc. in a plurality of frequency bands. The specification server 4 has a large number of programs describing a procedure in which the reader / writer 2 detects the RF tag 3 and performs wireless communication. The specification server 4 includes a program group 5 and a priority order information acquisition unit 11. A number of programs included in the specification server 4 are referred to as a program group 5. Note that in the following description, a program for controlling wireless communication with the RF tag 3 is simply referred to as a program unless a program function is particularly mentioned.

  The host computer 1 operates by an application program that reads / writes data from / to the RF tag 3 and controls the entire RF tag read / write system. The host computer 1 instructs the reader / writer 2 to read data from the RF tag 3 and write data to the RF tag 3 via a network such as a WAN (Wide Area Network), a LAN (Local Area Network), or a communication line. . The host computer 1 can execute an application program such as an RF tag dedicated computer, a personal computer, a portable terminal, a cellular phone, and the like, and can perform information transmission / reception with the reader / writer 2 or one piece of information including the reader / writer 2. Any processing device may be used.

  Based on an instruction from the host computer 1, the reader / writer 2 acquires a program for controlling wireless communication corresponding to various RF tags 3 from the specification server 4, reads data from the various RF tags 3, and stores data in the RF tags 3. Write. The reader / writer 2 includes a controller 6 and an antenna unit 7.

  FIG. 2 is a block diagram illustrating a configuration example of the controller according to the first embodiment. The controller 6 controls the reader / writer 2. The controller 6 includes a specification download unit 8, a command interpreter 9, and a tag driver interpreter 10. The controller 6 downloads the program 25 of the target RF tag 3 from the specification server 4 according to an instruction from the host computer 1, and converts the antenna unit 7 into an antenna module having a frequency capable of wireless communication with the target RF tag 3. Switch to read data from the RF tag 3 and write data to the RF tag 3.

  The specification download unit 8 receives and stores a program 25 describing a control procedure for performing wireless communication with the RF tag 3 from the specification server 4. The specification download unit 8 includes a download table 20 and a program group storage unit 21. The download table 20 holds information for selecting a program 25 to be used from the program group 5 stored in the specification server 4. The program group storage unit 21 downloads and stores the selected programs 25 in a batch. Although the number of programs 25 stored in the program group storage unit 21 is five, the number of programs stored is not particularly limited.

  FIG. 3 shows an example of a program configuration. The program 25 includes a program main body 31, a frequency band type 32, and a priority order 33. The program main body 31 describes a control procedure for performing wireless communication executed by the DSP 23. The frequency band type 32 is information for identifying the type of the antenna modules 7A and 7B used when the program main body 31 is executed. The priority 33 represents the order in which each program is executed. The priority 33 is higher (executed first) and lower as the value increases (after the execution order). FIG. 4 shows an example of the configuration of the program group stored in the program group storage unit 21. The program group 41 is a collection of programs 25. Each program 25 is given a priority in the program group 41.

  FIG. 5 shows an example of the configuration of the download table. The download table 20 includes a downloadable number 51 and a corresponding frequency band list 52. The downloadable number 51 is the number information of the programs 25 that can be stored in the program group storage unit 21, and can be updated in accordance with the addition of the memory in the program group storage unit 21. The downloadable number 51 may be expressed by a storage capacity (such as kilobytes). The corresponding frequency band list 52 is information that lists frequency bands that can be supported by the antenna unit 7, and also holds information on the priority order of the frequency bands of the programs executed by the reader / writer 2. The information of the corresponding frequency band list 52 can be updated according to the addition of an antenna module or the like.

  Please refer to FIG. The command interpreter 9 interprets an instruction from the host computer 1 and returns an execution result of the reader / writer 2. The command interpreter 9 interprets an instruction from the host computer 1 and transmits the instruction to the tag driver interpreter 10, particularly the DSP 23. Further, the command interpreter 9 takes out data to be written to the RF tag 3 from the contents of interpreting the instruction and transmits it to the DSP 23. Further, the command interpreter 9 responds to the host computer 1 with information read by the DSP 23 from the RF tag 3, an execution result of the DSP 23 communicating with the RF tag 3, and the like.

  The tag driver interpreter 10 controls the antenna unit 7, switches the antenna module to be used, and drives the antenna. The tag driver interpreter 10 includes a program load table 22, a DSP 23, a program memory 24, and an antenna switching unit 28. The tag driver interpreter 10 instructs the specification download unit 8 to collectively download the program 25 from the specification server 4 to the program group storage unit 21 in accordance with an instruction from the command interpreter 9. The tag driver interpreter 10 loads the program 25 from the program group storage unit 21 into the program memory 24. Further, when the DSP 23 finishes executing the program 26 stored in the program memory 24 by the DSP 23, the tag driver interpreter 10 erases the executed program 26 and loads a new program 25 from the program group storage unit 21. 24. Further, the tag driver interpreter 10 informs the specification server 4 of the information of the program 25 used for the detection of the RF tag 3 and the information of the detection result.

  The program load table 22 stores the order in which the tag driver interpreter 10 loads the program 25 from the program group storage unit 21. FIG. 6 is a diagram illustrating an example of the configuration of the program load table. The program load table 22 has a frequency band priority order 61 describing the priority order for each frequency of the program executed by the reader / writer 2. When the tag driver interpreter 10 loads a program from the program group storage unit 21, the tag driver interpreter 10 may change the priority of the program to be executed based on the information of the frequency band priority 61. Note that the contents of the frequency band priorities do not need to be fixed, and can be arbitrarily changed depending on the usage status and function expansion of the reader / writer 2.

  The DSP 23 loads the program 26 from the program memory 24 and executes it according to the instruction of the command interpreter 9. The DSP 23 issues an instruction to switch to the antenna module to be used for the antenna switching unit 28 according to the program 26, communicates with the RF tag 3 through the antenna unit 7, reads information on the RF tag 3, and sends information to the RF tag 3. Write. The DSP 23 sends the information read from the RF tag 3 and the execution result communicated with the RF 3 to the command interpreter 9 and records it as a history in the storage device in the reader / writer 2.

  The program memory 24 stores a plurality of programs 25 loaded from the program group storage unit 21 by the tag driver interpreter 10. Note that the tag driver interpreter 10 may change the priority of the program 26 to be loaded based on the information of the frequency band priority 61 of the program load table 22. The DSP 23 reads and executes the programs 26 from the program memory 24 in order according to the priority order. Although the number of programs 26 stored in the program memory 24 is five, the number of programs stored is not particularly limited.

  The antenna switching unit 28 switches to an antenna module that uses the antenna unit 7 according to the program 26 executed by the DSP 23. Further, each antenna module 7A, 7B, etc. of the antenna unit 7 transmits to the DSP 23 radio wave signals transmitted / received to / from the RF tags 3A, 3B, etc.

  The antenna unit 7 includes antenna modules 7A and 7B that perform wireless communication with tags in each frequency band, and a device that has a signal conversion function. The antenna unit 7 includes antenna modules 7A and 7B corresponding to each frequency band. The antenna modules 7A, 7B, etc. transmit and receive radio waves in carrier frequency bands such as 13.56 MHz band, 953 MHz band, 2.45 GHz band, and UHF band, for example. The antenna unit 7 includes a transmission circuit, a filter circuit, a modulation / demodulation circuit, an encoding / decoding circuit, an A / D converter (Analog to Digital Converter) / DA converter (Digital to Analog Converter). ) Etc. are provided for conversion functions required for signal transmission. The antenna unit 7 converts the radio signal received from the RF tag 3 into a digital signal for processing by the DSP 23, and converts the signal processed by the DSP 23 into an analog signal for transmission by radio waves.

  The specification server 4 includes a program group 5 and a priority order information acquisition unit 11. The program group 5 stored in the specification server 4 is a large number of programs describing a procedure in which the reader / writer 2 controls wireless communication with various RF tags 3. Based on the request from the specification download unit 8, the specification server 4 collectively supplies the frequency band programs that can be handled by the reader / writer 2 in the number that can be received from the higher priority order. At that time, the priority order information acquisition unit 11 may receive priority order information for each reader / writer 2 and change the order in which the programs are downloaded. Further, the priority order of the program group 5 itself may be updated / changed. The specification server 4 transmits / receives data to / from the reader / writer 2 via a network such as WAN, LAN, or communication line.

  The specification server 4 can assign priorities to the stored programs and change the priorities. The priority order may be, for example, the order in which the use probability is high in the program, or the order in which the frequency bands are continuous in order to shorten the overhead time at the time of antenna switching. Further, the priority order may be changed in accordance with changes in the types of RF tags 3 on the market in consideration of the time and region. Further, in correspondence with the reader / writer 2, the type of the RF tag 3 that can receive the response signal and can communicate is stored as a history, and may be taken into account when changing the priority order. In the first embodiment, the priority order of the programs is given an order that extends over different frequency bands of a plurality of communication standards, and in the second embodiment, the order is given for each frequency band.

  FIG. 7A shows a case where programs are rearranged in order of priority over all frequencies. FIG. 7A (a) is an example of the program group 5 stored in the specification server 4, and holds the frequency band type and priority information together. FIG. 7A (b) is an example in which 125 kHz not supported by the reader / writer 2 is removed from FIG. 7A (a). FIG. 7A (c) shows an example in which the program group 5 of FIG. 7A (b) is arranged in descending order of priority.

  FIG. 7B shows a case where the priorities are rearranged and rearranged based on FIG. 7A (c) so that the frequency bands of the programs are continuous in consideration of the priority order and overhead time such as frequency switching. In FIG. 7B, the priority is determined in the order of (d), (e), and (f) in consideration of the continuity of the frequency band rather than the original priority, assuming that the overhead time is larger. The antenna switching unit 28 switches the antenna module every time the frequency band to be transmitted / received changes. The number of times the antenna module is switched is 10 times in FIG. 7A (c), 5 times in FIG. 7B (d), 4 times in FIG. 7B (e), and 3 times in FIG. 7B (f).

  FIG. 8A shows a case where the priority order of programs is changed based on the usage history. FIG. 8A (a) is an example of the program group 5 stored in the specification server 4, and holds both the frequency band type and priority order information. FIG. 8A (b) is an example in which the priority order of FIG. 8A (a) is updated. As a method of determining the priority order, the distribution amount for each type of the RF tag 3 in the area where the reader / writer 2 is located, the distribution amount at the time when the reader / writer 2 detects the RF tag 3, and the RF tag that the reader / writer 2 was able to detect It may be possible to consider information such as the three types. The priority order may include a priority order common to the reading device group and a priority order for each reading device. FIG. 8A (c) is an example in which 125 kHz not supported by the reader / writer 2 is removed from FIG. 8A (b).

  FIG. 8B shows a case where, after the priority order is updated, the priorities are rearranged and rearranged so that the frequency bands of the programs continue in consideration of overhead time such as frequency switching. FIG. 8B (d) is an example in which the program group 5 of FIG. 8A (c) is arranged in descending order of priority. 8B (e) and 8 (f) are examples in which priorities are assigned by rearranging the frequency bands so that the overhead time is taken into consideration based on the information of the program group 5 in FIG. 8B (d). It is. In the order of FIGS. 8E and 8F, assuming that the overhead time is large, the priorities are reset in consideration of the continuity of the frequency band rather than the original priorities. The number of times the antenna module is switched is 9 in FIG. 8B (d), 6 in FIG. 8B (e), and 4 in FIG. 8B (f). Actually, for example, the expected value of the time from the start of the reading process to the reading of the RF tag 3 in consideration of the overhead such as the switching time of the antenna module and the hit rate for each program (RF tag standard) The priority order is determined so that is minimized.

  FIG. 9 is a flowchart illustrating an example of the operation of the RF tag read / write system. FIG. 10 is a flowchart showing an example of an operation for executing a program group, and corresponds to step S7 in the flowchart shown in FIG. When the tag driver interpreter 10 receives a tag detection request from the command interpreter 9, the tag driver interpreter 10 transmits a program acquisition request to the specification download unit 8. When the specification download unit 8 receives a program acquisition request from the tag driver interpreter 10, the specification download unit 8 sends a program acquisition request to the specification server 4, the downloadable number 51 held in the download table 20, and a corresponding frequency band. The list 52 is transmitted (step S1).

  The specification server 4 searches the program group 5 and detects a program corresponding to the frequency band type 32 included in the received corresponding frequency band list 52 (step S2). The specification server 4 determines from the search result of the program group 5 whether a program in the corresponding frequency band exists (step S3). If there is no corresponding frequency program (step S3; NO), the process is terminated.

  If there is a program in the corresponding frequency band (step S3; YES), the searched programs are rearranged in descending order of priority (step S4). The specification server 4 delimits the received downloadable number 51 in order from the highest priority, and downloads the divided programs together as a program group 41 to the specification download unit 8 (step) S5). When the downloadable number 51 is represented by a storage capacity, the program group 41 is divided into program groups 41 so that the sum of the data capacities of the programs included in the program group 41 is the maximum number. Download all at once.

  The specification download unit 8 stores the program group 41 downloaded together in the program group storage unit 21 (step S6). The tag driver interpreter 10 loads the program 25 stored in the program group storage unit 21 into the program memory 24, and detects the RF tag 3 (step S7). Step S7 will be described later in detail with reference to FIG. The tag driver interpreter 10 sequentially executes the program 26 on the DSP 23 to determine whether tag detection is successful (step S8). If the tag detection is successful (step S8; YES), the tag detection process is terminated.

  If tag detection fails (step S8; NO), the tag driver interpreter 10 inquires about the presence or absence of the next-order program group 41 via the specification download unit 8 (step S9). If there is no next-order program group 41 in the specification server 4 (step S9; NO), the tag detection process is terminated without detecting the tag. When the specification server 4 has the next-order program group 41 (step S9; YES), the specification server 4 downloads the next-order program group 41 to the specification download unit 8 in a lump, and the steps subsequent to step S6. Repeat the process.

  FIG. 10 is a flowchart illustrating an example of the operation of the wireless control program group. The DSP 23 rearranges the programs 25 in the program group storage unit 21 in order of priority according to the situation of each individual reader / writer 2 (step S11). At that time, the DSP 23 may rearrange the priorities with reference to the frequency band priorities 61 of the program load table 22. However, when the order in which the specification download unit 8 downloads from the specification server 4 has a priority order suitable for the reader / writer 2, this processing need not be performed.

  The DSP 23 converts the program 25 into an execution format and loads the program 26 into the program memory 24 (step S12). The DSP 23 sequentially loads the program 26 to be executed, and determines whether the frequency band type 32 of the program 26 to be executed does not match the frequency band type set in the antenna unit 7 (step S13).

  If they do not match (step S13; YES), the DSP 23 instructs the antenna switching unit 28 to switch the antenna modules 7A, 7B, etc. of the antenna unit 7 to the matching frequency band antenna modules (step S14). When the frequency bands match (step S13; NO), or after performing the antenna module switching process (step S14), the DSP 23 executes the program 26 (step S15).

  The DSP 23 determines whether the tag has been successfully detected as a result of executing the program 26 (step S16). If tag detection fails (step S16; NO), the DSP 23 determines whether there is an unexecuted program 26 in the program memory 24 (step S17). If there is an unexecuted program 26 (step S17; YES), the process returns to step S13, and the DSP 23 determines whether it is necessary to switch antennas.

  If the tag detection is successful (step S16; YES), or if there is no unexecuted program 26 (step S17; NO), the DSP 23 performs a setting to stop the operation of the antenna module (step S18). The process is terminated.

  As described above, according to the RF tag read / write system according to the first embodiment, the tags 26 are sequentially transmitted from the program 26 having a high priority, and the tag detection processing is sequentially performed. By transmitting the program 26 in a batch, it is possible to reduce the transmission time for establishing communication when transmitting the program. In addition, since the program 26 is executed from the high priority program 26, the average time until the RF tag is read can be shortened. Furthermore, by making the programs 26 in the same frequency band continue, the number of switching of the antenna unit 7 can be reduced, and the average reading time can be shortened by taking overhead time such as antenna switching into consideration. Therefore, even if the types of RF tags 3 to be detected increase, it is possible to prevent the time for detecting the RF tag 3 from being proportionally increased as the number of types increases, and the RF tag as a whole RF tag read / write system can be prevented. The time for detecting 3 can be shortened.

  Further, the priority order for executing the program 26 can be detected by the reader / writer 2 in terms of the distribution amount for each type of the RF tag 3 in the area where the reader / writer 2 is located, the distribution amount when the reader / writer 2 detects the RF tag 3, and the reader / writer 2. By determining the information such as the type of the RF tag 3 in consideration of the method, the time for the reader / writer 2 to detect the RF tag 3 can be shortened flexibly. At that time, the priority order may be determined so that the RF tag detection time expected value (the sum of the product of the RF tag detection rate and the time until detection) is minimized.

  Furthermore, by making it possible to update the information of the frequency band that can be executed by the reader / writer 2, it is possible to cope with the case where an antenna module of a different frequency band is mounted on the antenna unit 7, so that the function can be easily expanded. .

(Modification of Embodiment 1)
The modification of the first embodiment is provided with a priority order update unit 27 in the specification server 4 and has a function of learning the execution result of the reader / writer 2 and updating the priority order. Other configurations are the same as those in the first embodiment. FIG. 11 shows an example of the configuration of a modification of the first embodiment.

  The priority order updating unit 27 receives information on a program in which the reader / writer 2 has successfully detected the RF tag 3, and increases the priority order of the successful program. The program group 5 may be determined so that the priority order is different for each reader / writer 2 by updating based on the information of the individual reader / writer 2. Further, the priority of the program group 5 may be updated by collecting information for each group in which the reader / writer 2 such as a certain region, business type, or home environment is installed. Furthermore, when the individual reader / writer 2 downloads, the priority information for each reader / writer 2 acquired by the priority information acquisition unit 11 is also taken into consideration, and the priority corresponding to each reader / writer 2 is determined. Information may be updated or changed.

  FIG. 12 is a flowchart illustrating an example of the operation of the RF tag read / write system including the priority order changing process. 9 is different from the flowchart of FIG. 9 in that priority order update (step S21) is added.

  FIG. 13 is a flowchart illustrating an example of the operation of the priority order update process. The priority update unit 27 receives information on the program that has successfully detected the RF tag 3 from the reader / writer 2 (step S31). The priority order update unit 27 searches the program group 5 for a program that has successfully detected received information, and confirms the priority order. It is determined whether the priority value of the successful detection program is equal to 0 (highest) (step S32). If the priority is higher than 0 (step S32;> 0), the priority of the successful detection program is increased (step S33). That is, the priority update unit 27 subtracts 1 from the priority of the successful detection program.

  When the priority is 0 (the highest) (step S32; = 0), or after performing the process of increasing the priority of the successfully detected program (step S33), the priority update unit 27 detects in the program group 5 It is determined whether there is a program having the same priority as the new priority of the successful program (step S34). If there is no program with the same priority (Step S34; No), the process is terminated. If there is a program with the same priority (step S34; yes), the priority update unit 27 lowers the priority of the program with the same priority (step S35). That is, the priority order update unit 27 adds 1 to the priority order of the program that lowers the priority order.

  As described above, according to the RF tag read / write system according to the modification of the first embodiment, it is possible to immediately change the priority order in accordance with the usage status of the reader / writer 2 and shorten the tag detection time. be able to. In the above description, the reader / writer 2 and the specification server 4 correspond to each other on a one-to-one basis. However, the priority order may be determined by collecting information for each group in which the reader / writer 2 is installed.

  In the modification of the first embodiment, an example of a method for increasing the priority of a program that has successfully detected the RF tag 3 has been described. However, the time period during which the reader / writer 2 is used and the time until the RF tag 3 is detected. Etc., the priority order may be updated. In addition, the specification server 4 aggregates not only the results of individual reader / writers 2 reading the RF tags 3 but also the results of reading of other reader / writers 2 and the distribution of the sales volume of products with the RF tags 3 attached. The priority order may be updated in consideration of the amount and the like. Furthermore, the priority order may be updated so that the RF tag detection time expected value is minimized as the detection rate changes.

  Note that the reader / writer 2 holds the priority order information and transmits the priority order information to the specification server 4 when requesting a program to the specification server 4. That is, instead of the corresponding frequency band list 52 or in addition to the corresponding frequency band list 52, the priority order information is transmitted to the specification server 4. In this case, the specification server 4 acquires priority order information from the reader / writer 2 by the priority order information acquisition unit 11, selects the program group 41 in accordance with the order, and downloads the downloadable number 51 at a time. .

(Embodiment 2)
The second embodiment is a case where the RF tag 3 is detected using the program 26 to which the priority is assigned for each frequency band. In the second embodiment, by assigning priorities to each frequency band, the reader / writer 2 can change the priorities for each frequency band in the case of the same configuration as in the first embodiment. Also, in the case of a configuration in which radio communication is performed simultaneously on one RF tag 3 in a plurality of frequency bands and the RF tag 3 is detected, the RF tag 3 detection processing can be performed in the most efficient order for each frequency band.

  The configuration of the second embodiment can be the same as that of the first embodiment. In addition, a configuration in which a plurality of DSPs 23 and the like are provided, and a plurality of antenna modules can be simultaneously used to perform wireless communication in a plurality of frequency bands simultaneously. FIG. 14 is a diagram illustrating an example of the configuration of the tag driver interpreter 10 that can execute multiple frequency bands simultaneously. The tag driver interpreter 10 shown in FIG. 14 includes DSPs 23A, 23B, and 23C, unlike the first embodiment. Since the tag driver interpreter 10 of FIG. 14 includes a plurality of DSPs that are connected to antenna modules of different frequency bands and operate independently, wireless communication is performed simultaneously with one RF tag 3 in three frequency bands. The RF tag 3 can be detected.

  FIG. 15 is a chart showing an example when a program is selected by the specification server. In the example of FIG. 15A, priorities from 0 to a maximum of 5 are assigned to each frequency band. The program group 5 stores 15 programs, and each program has information of four frequency band types of 125 kHz, 13 MHz, 953 MHz, and 2.4 GHz, and priority order for each frequency band.

  The second embodiment is different from the first embodiment in the configuration of the reader / writer 2 or the method of assigning the program priority, but basically the operation of the RF tag read / write system in FIG. 9 and the wireless control in FIG. Since the same processing as the operation of the program group is performed, description will be made with reference to these. In addition, the part which overlaps with Embodiment 1 is demonstrated easily.

  The tag driver interpreter 10 transmits a program acquisition request to the specification download unit 8. The specification download unit 8 transmits a program acquisition request, the downloadable number 51, and the corresponding frequency band list 52 to the specification server 4 (step S1). The specification server 4 searches the program group 5 and detects a program in which the corresponding frequency band list 52 matches the frequency band type 32 (step S2). For example, in the example of FIG. 15, 15 programs stored in the specification server 4 are searched, and 13 programs are detected except for non-corresponding 125 kHz.

  The specification server 4 determines from the search of the program group 5 whether there is a program in the corresponding frequency band (step S3). If there is no corresponding frequency program (step S3; NO), the process is terminated. If there is a program in the corresponding frequency band (step S3; YES), the searched programs are rearranged in descending order of priority (step S4). For example, FIG. 15B is a chart showing an example in which programs that can be used by the reader / writer 2 are arranged in descending order of priority. In FIG. 15 (b), the 13 programs selected in step S2 are arranged in order of priority.

  The specification server 4 downloads the program group 41, which is divided into predetermined numbers in order from the highest priority, to the specification download unit 8 (step S5). FIG. 15C is a chart showing an example of a case in which a group of programs that can be used by the reader / writer 2 are collectively downloaded from the higher priority order. FIG. 15C shows an example in which the program group of FIG. 15B is downloaded in batches of 5 programs from the highest priority. The specification download unit 8 stores the program group 41 downloaded together in the program group storage unit 21 (step S6). The tag driver interpreter 10 loads the program 25 stored in the program group storage unit 21 into the program memory 24, and detects the RF tag 3 (step S7).

  The DSP 23 rearranges the programs 25 in the program group storage unit 21 (step S11). FIG. 16 is a chart showing an example of a case where the programs are arranged so that the frequencies are continuous when the programs are sequentially executed for each frequency band. In FIG. 16, the programs 26 (FIG. 15C) stored in the program memory 24 are arranged so that the frequencies are continuous according to the frequency band priority 61 of the program load table 22.

  In the case of the reader / writer 2 that sequentially executes the program 26 for each frequency band, the processing after step S12 is the same as that described in the first embodiment, and thus the description thereof is omitted.

  In the reader / writer 2 that sequentially executes the program 26 one frequency band at a time, the antenna module must be switched 12 times if the reader / writer 2 does not rearrange the programs and remains in the order shown in FIG. However, in the case of the order of FIG. 16 in which the rearrangement is performed, the implementation is eight times, and the time for detecting the RF tag 3 can be shortened.

  In the case of the reader / writer 2 that executes three programs 26 in parallel, the processing after step S12 is performed in parallel by the DSPs 23A, 23B, and 23C for each frequency band. For example, in the first transfer data of FIG. 15C, the DSP 23A executes the program 26 of 2.4 GHz, the DSP 23B executes the program 26 of 953 MHz, and the DSP 23C executes the program 26 of 13 MHz. The other processes are the same as those described in the first embodiment, and a description thereof will be omitted.

  FIG. 17 is a chart showing an example of the operation of the reader / writer 2 that executes a program simultaneously in parallel. In order to detect one RF tag 3, by executing a program for controlling the radio for each frequency band in parallel, the time for overhead such as antenna switching becomes unnecessary, and the processing time for reading the RF tag 3 is reduced. Can be shortened. And since the program is downloaded from the one with the highest priority for each frequency band and the read / write processing is executed in parallel, the time until reading can be greatly shortened.

  As described above, according to the RF tag read / write system according to the second embodiment, the priority order of programs is assigned to each frequency band, so that the priority order can be assigned and updated in the specification server 4 easily for each frequency band. . Then, by rearranging and executing a plurality of programs so that the frequency bands are continuous, the number of accesses between the controller 6 and the antenna unit 7 can be reduced, and the time for detecting the RF tag 3 can be shortened.

  In the RF tag read / write system of the second embodiment, the number of accesses between the reader / writer 2 and the specification server 4 can be reduced by downloading a plurality of programs from the specification server 4 at a time. The detection time can be shortened. As in the first embodiment, the information on the frequency band that can be executed by the reader / writer 2 can be updated, so that it is possible to cope with the case where an antenna module of a different frequency band is mounted on the antenna unit 7. Expansion is easy and compatibility can be increased.

  Further, since the order of programs executed by the reader / writer 2 as well as the specification server 4 can be changed, the load on the specification server 4 can be reduced, and optimization can be achieved for each reader / writer 2.

  Furthermore, in the reader / writer 2 that can execute a program of a plurality of frequency bands in parallel, the antenna switching process is not required, and the program is downloaded from the higher priority for each frequency band, and the read / write process is performed in parallel. As a result, the time until reading can be greatly reduced.

(Modification of Embodiment 2)
Further, in the second embodiment, similarly to the first embodiment, a priority order updating unit 27 is provided in the specification server 4 to change the priority order of the timely program. The modification of the second embodiment can be realized by the same specification server 4 and the same flowchart as those of the modification of the first embodiment, except that the program group 5 is assigned priority for each frequency band.

  According to the RF tag read / write system according to the modification of the second embodiment, the priority order for each frequency band can be changed immediately in accordance with the usage status of the reader / writer 2, and the tag detection time can be shortened. Can do. In addition, the RF tag read / write system may determine not only the case where the reader / writer 2 and the specification server 4 correspond one-to-one but also the information for each group in which the reader / writer 2 is installed to determine the priority order.

  In the modification of the second embodiment, as in the modification of the first embodiment, in addition to the method of raising the priority of the program that has successfully detected the RF tag 3, the time zone in which the reader / writer 2 is used, The priority order may be updated in consideration of the time until the RF tag 3 is detected. In addition to the result of each reader / writer 2 reading the RF tag 3, the specification server 4 also counts the reading results of other reader / writers 2 and distributes the sales volume of the products with the RF tag 3 attached. The priority order may be updated in consideration of the amount and the like.

  As described above, the reader / writer 2 includes the specification download unit 8 that collectively receives and stores the program 25 describing the control procedure for performing wireless communication with the RF tag 3 from the specification server 4, and downloads the specification. The program 25 stored in the program group storage unit 21 of the unit 8 is executed to read the RF tag 3. Since the programs can be downloaded in a batch and acquired in a batch, there is no need to perform processing such as establishment of a communication network each time an individual program is downloaded, and the time for reading the RF tag 3 as a whole is shortened. be able to.

  Since the reader / writer 2 includes priority order acquisition means for acquiring the order in which the reading process is executed, the programs can be executed in the descending order of priority from among the programs received in a batch. Since the reader / writer 2 executes the programs in order from the highest priority, the time for reading the RF tag 3 as a whole is shortened. The priority order acquisition means assigns priorities to the priority order information acquisition unit 11 and the priority order update unit 27 of the specification server 4, and when the reader / writer 2 downloads them in that order, the order of download is directly programmed. May be given priority. Further, the priority order acquisition unit may change the order of executing the downloaded programs according to the order of the frequency band priority order 61 of the program load table 22 and set the priority order.

  The priority order of programs executed by the reader / writer 2 is preferably arranged so that reading processing programs of communication standards in the same frequency band among a plurality of communication standards are at least partially continuous. Since the frequency band of the program to be executed is continuous, it is possible to reduce the overhead time for the antenna module switching process associated with the change of the frequency band to be executed.

  The reader / writer 2 can be configured to store the history of receiving the response signal of the RF tag 3 by executing the program and change the priority order. The reader / writer 2 may change the order of the frequency band priority 61 of the program load table 22 based on the history. The reader / writer 2 retains information on the priority order of programs to be executed for each reader / writer 2, changes the priority order of the programs retained by the specification server 4 based on the history, and downloads the information periodically or as a download. The priority information updated at this time may be transmitted to the priority information acquisition unit 11 of the specification server 4.

  As another RF tag read / write system that learns the order from the history, the specification server 4 receives the success / failure of the detection of the RF tag 3 from the reader / writer 2, creates and stores the history, and changes the priority order. You can also. The priority order update unit 27 of the specification server 4 may update the priority order of the program based on the history of each reader / writer 2. Further, the priority order update unit 27 is a priority order common to all reader / writers 2 in a predetermined region and time zone based on history information such as the region where the reader / writer 2 is installed and the time zone in which the reader / writer 2 is used. May be changed.

  When the priority order for each individual reader / writer 2 is updated by the reader / writer 2 that learns the order based on the history, the expected time for detecting the RF tag 3 for each individual reader / writer 2 can be shortened. . In addition, when a priority order common to all reader / writers 2 is assigned and updated for each predetermined region or time zone, the reader / writer 2 as a whole in the predetermined region or time zone detects the RF tag 3. The expected time can be shortened.

  By making the order executed by the reader / writer 2 one order across different frequency bands of a plurality of communication standards, the program can be executed in consideration of frequency band switching, use frequency, history of successful detection, distribution amount, etc. Therefore, the time for detecting the RF tag 3 is shortened.

  By setting the execution order of the reader / writer 2 to the order set for each frequency band of a plurality of communication standards, the programs can be executed in descending order of priority for each frequency band. In particular, in the reader / writer 2 that can detect the RF tag 3 using radio waves in a plurality of frequency bands simultaneously, the time for detecting the RF tag 3 can be shortened.

  By providing the reader / writer 2 with priority order acquisition means for acquiring the order in which the reading processing is executed, priority reader information can be held for each reader / writer 2. Since the priority of executing the program for each individual reader / writer 2 can be optimized, the time for the individual reader / writer 2 to detect the RF tag 3 can be shortened.

  The specification server 4 includes means for collectively transmitting a plurality of programs 25 held within a range that can be received by the reader / writer 2. Since a plurality of programs 25 can be transmitted at a time, it is not necessary to perform processing such as establishment of a communication network necessary for transmitting the programs 25 one by one, and the time for reading the RF tag 3 as a whole is reduced. Can be shortened.

  The specification server 4 includes priority order acquisition means for the order in which the reader / writer 2 executes the programs, so that the programs to be transmitted in a batch can be transmitted in descending order of priority, so that the RF tag 3 is read as a whole. Can be shortened.

  The priority order acquisition means of the specification server 4 acquires the priority order information for each reader / writer 2 so that an optimum priority order is assigned to each reader / writer 2 and the program is transmitted in a batch. it can. Since the priority order is optimized for each reader / writer 2, the time for the reader / writer 2 to detect the RF tag 3 can be shortened.

  Other suitable modifications of the present invention include the following configurations.

About the RRF tag reader according to the first aspect of the present invention,
Preferably, the apparatus includes a priority order acquisition unit that acquires the order in which the reading process is performed.
The receiving means collectively receives a number of the read processing programs that can be stored in the storage means in order from the execution order acquired by the priority order acquisition means.
The reading means sequentially performs reading processing according to the execution order.

  Preferably, the reading process is executed in such a manner that the reading processing programs of the communication standard of the same frequency band among the reading processing programs of the plurality of communication standards are arranged at least partially continuous. And

  Preferably, the learning apparatus includes a learning unit that determines an order in which the reading process is executed based on a history of reception of a response signal by the reading process executed by the reading unit.

  Preferably, the order in which the reading process is executed is one order across different frequency bands of the plurality of communication standards.

  Preferably, the order of executing the reading process is an order set for each frequency band of the plurality of communication standards.

  Preferably, the priority order acquisition unit acquires the execution order set corresponding to the reading device.

About the server according to the second aspect of the present invention,
Preferably, the RF tag reader includes priority order acquisition means for acquiring the order in which the reading processing program is executed,
The transmission means collectively transmits the number of reading processing programs that can be stored in the RF tag reading device in order from the first execution order acquired by the priority order acquisition means.

  Preferably, the priority order acquisition unit acquires an execution order set for each of the RF tag readers.

  In addition, the hardware configuration and the flowchart described above are merely examples, and can be arbitrarily changed and modified.

  The central part of the host computer 1, specification server 4, controller 6, and the like that performs read / write processing of the RF tag can be realized using a normal computer system, not a dedicated system. For example, a computer program for executing the above operation is stored and distributed in a computer-readable recording medium (flexible disk, CD-ROM, DVD-ROM, etc.), and the computer program is installed in the computer. Thus, an RF tag read / write system that executes the above-described processing may be configured. Alternatively, the RF tag read / write system may be configured by storing the computer program in a storage device included in a server device on a communication network such as the Internet and downloading the computer program from a normal computer system.

  Further, when the RF tag read / write system is realized by sharing of the OS (operating system) and application programs, or by cooperation between the OS and application programs, only the application program portion is stored in a recording medium or a storage device. Also good.

  It is also possible to superimpose a computer program on a carrier wave and distribute it via a communication network. For example, the computer program may be posted on a bulletin board (BBS, Bulletin Board System) on a communication network, and the computer program distributed via the network. The computer program may be started and executed in the same manner as other application programs under the control of the OS, so that the above-described processing may be executed.

It is a block diagram which shows the structural example of the whole RF tag reading / writing system which concerns on Embodiment 1 of this invention. 3 is a block diagram illustrating a configuration example of a controller according to Embodiment 1. FIG. It is a figure which shows an example of a structure of a program. It is a figure which shows an example of a structure of a program group. It is a figure which shows an example of a structure of a download table. It is a figure which shows an example of a structure of a program load table. It is a graph which shows an example at the time of rearranging the program in the order of the priority order over all frequencies. It is a chart of an example at the time of rearranging and rearranging a priority so that the frequency band of a program may continue. It is a chart which shows an example at the time of changing the priority of a program based on a use history. It is a chart of an example at the time of rearranging a priority order so that the frequency band of a program may continue after use history updating. 3 is a flowchart illustrating an example of the operation of the RF tag read / write system according to the first embodiment. 4 is a flowchart illustrating an example of an operation for executing a program group according to the first embodiment. 6 is a diagram illustrating an example of a configuration of a modification of the first embodiment. FIG. 10 is a flowchart showing an example of operation of the RF tag read / write system including priority order change processing according to a modification of the first embodiment. 10 is a flowchart illustrating an example of operation of priority order update processing according to a modification of the first embodiment. It is a figure which shows an example of a structure of the tag driver interpreter which can perform multiple frequency bands simultaneously. It is a chart which shows an example at the time of selecting a program with a specification server. It is a chart which shows an example at the time of rearranging a program with DSP. It is a graph which shows an example of operation | movement of the reader / writer which performs a program simultaneously in parallel. It is a figure which shows the structure of the RF communication system of related technology.

Explanation of symbols

1 Host computer
2 Reader / Writer
3, 3A, 3B RF tag
4 specification server
5 programs
6 Controller
7 Antenna unit
7A, 7B antenna module
8 Specification Download Department
9 Command interpreter
10 Tag driver interpreter
11 Priority information acquisition unit
20 Download table
21 Program group storage
22 Program load table 23, 23A, 23B, 23C DSP
24 program memory
25, 26 programs
27 Priority Update Unit
28 Antenna switching part
31 Program itself
32 Frequency band type
33 Priority
41 programs
51 downloadable number
52 List of supported frequency bands
61 Frequency band priority

Claims (13)

An RF tag reader capable of reading RF tags of two or more different communication standards,
Storage means for storing an RF tag reading processing program of two or more communication standards;
Receiving means for collectively acquiring a number of read processing programs that can be stored in the storage means from a server that holds read processing programs corresponding to each of a plurality of communication standards for reading RF tags, and storing them in the storage means When,
A reading unit that performs the reading process of the RF tag by executing the reading processing program stored in the storage unit;
An RF tag reader comprising: Priority order acquisition means for acquiring the order of executing the reading process,
The receiving means collectively receives a number of the read processing programs that can be stored in the storage means in order from the execution order acquired by the priority order acquisition means.
The RF tag reading apparatus according to claim 1, wherein the reading unit sequentially performs a reading process according to the execution order.   The order of executing the reading process is such that the reading processing programs of the communication standard of the same frequency band among the reading processing programs of the plurality of communication standards are arranged at least partially continuous. Item 3. The RF tag reader according to Item 2.   4. The RF tag reading according to claim 2, further comprising a learning unit that determines an order in which the reading process is executed based on a history of reception of a response signal by the reading process executed by the reading unit. 5. apparatus.   5. The RF tag reading apparatus according to claim 2, wherein the reading process is performed in one order across different frequency bands of the plurality of communication standards. 6.   5. The RF tag reader according to claim 2, wherein the reading process is executed in an order set for each frequency band of the plurality of communication standards. 6.   The RF tag reader according to any one of claims 2 to 6, wherein the priority order acquisition unit acquires the execution order set corresponding to the reader. Holding means for holding a reading processing program corresponding to each of a plurality of communication standards for reading an RF tag;
Of the read processing programs held in the holding means, the number of read processing programs that can be stored in the RF tag reading device is sent to an RF tag reading device that can read RF tags of two or more different communication standards in a batch. Sending means to
A server comprising: A priority order acquisition means for acquiring an order in which the RF tag reader executes the reading processing program;
9. The transmission unit collectively transmits the number of reading processing programs that can be stored in the RF tag reading device in order from the execution order acquired by the priority order acquisition unit. Server described in.   The server according to claim 8 or 9, wherein the priority order acquisition unit acquires an execution order set for each of the RF tag readers. An RF tag reader according to any one of claims 1 to 7,
A server according to any one of claims 8 to 10,
A communication network for communicatively connecting the RF tag reader and the server;
An RF tag reading system comprising: An RF tag reading method of an RF tag reading apparatus capable of storing a program for performing an operation of reading RF tags of two or more different communication standards,
A receiving step of collectively acquiring and storing a number of read processing programs that can be stored in the RF tag reader from a server holding a plurality of read processing programs;
A reading step of executing a reading process of the RF tag by executing the reading processing program stored in the receiving step;
An RF tag reading method comprising: Computer
Storage means for storing an RF tag reading processing program of two or more communication standards;
From the server holding the reading processing program corresponding to each of a plurality of communication standards for reading an RF tag, the number of reading processing programs that can be stored in the storage unit are acquired in a lump and stored in the storage unit. Receiving means;
A reading means for executing a reading process of the RF tag by executing the reading processing program stored in the storage means;
A program characterized by functioning as

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