JP5169977B2 - Information portable terminal - Google Patents

Description

The present invention relates to an information portable terminal having an RFID tag read / write function for performing wireless communication with an RFID tag.

An RFID (Radio Frequency IDentification) system includes an RFID tag for registering ID and information data, and an RFID reader / writer device (information portable terminal) for recognizing and controlling the RFID tag. An RFID tag (passive tag) without a built-in battery includes a built-in antenna and an IC chip, and receives power and communication data with the built-in antenna via radio waves and magnetic fields output from the antenna of the RFID reader / writer device. Data is registered (encoded), and data from the IC chip is returned to the RFID reader / writer device.

Patent Document 1 discloses an RFID device in which an RF antenna is shared between a reader / writer and an RFID tag by switching a connection with a connection switching unit.

JP 2005-148820 A

In an RFID reader / writer device having a wireless LAN communication device, wireless LAN standards (radio law regulations: output power, frequency, protocol) differ from country to country. For this reason, until now, after setting the country code to the wireless LAN communication device (or wireless LAN driver) according to the wireless LAN standard of the destination, it is packed and shipped, or shipped to each sales office. The packaged product was once taken out and the country code was set according to the destination, which was troublesome.

In an RFID system, many abnormalities and errors occur in wireless communication between an RFID reader / writer device and an RFID tag. The cause of the abnormality is on the side of the RFID reader / writer device such as failure of the RFID reader / writer device, on the side of the RFID tag such as failure of the RFID tag, there is a problem in usage on the user side such as a long communication distance There are various cases. When an abnormality occurs, it is necessary for the user to identify the cause. However, it is difficult to identify the cause, and it is difficult to use an RFID reader / writer device that uses radio waves that cannot be seen by a user who is used to an optical information reading device that can confirm operation by reading light but is not used to an RFID reader / writer device. It was uncomfortable.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an information portable terminal that can read and write information for control in a packed state.

In order to achieve the above object, the invention of claim 1 is an information portable terminal 10 having an RFID tag read / write function for performing wireless communication with the RFID tag 80 via the RF antenna 58, and is connectable to the RF antenna 58. RFID tag chip 56 arranged in
First switching means 57A for switching connection / disconnection between the RF antenna 58 and the chip of the RFID tag 56;
When connected to the RF antenna 58 side, it communicates with an external RFID tag 80, and when connected to the RFID tag chip 56 side, it communicates with the RFID tag chip 56. A communication circuit 52;
A second switching means 57B for switching the connection of the communication circuit 52 between the RF antenna 58 side and the RFID tag chip 56 side;
Control means 40 for performing control based on information read from the chip 56 of the RFID tag,
Before the information portable terminal is turned on (S10: No), the first switching means 57A connects the RF antenna 58 and the RFID tag chip 56 (S6), and the RFID tag chip from the outside. Enables read / write to
The first switching means 57A disconnects the RF antenna 58 from the RFID tag chip 56 after the information portable terminal is turned on and before wireless communication with the external RFID tag is started (S10: Yes). (S12), the second switching means 57B connects the communication circuit 52 to the RFID tag chip 56 side (S14), reads information held in the RFID tag chip 56, and the control means 40 Control is performed based on the read information (S100),
At the start of wireless communication with the external RFID tag (S20: Yes), the second switching unit 57B connects the communication circuit 52 to the RF antenna 58 side to enable read / write to the external RFID tag (S22). ) Is a technical feature.

In the portable information terminal according to the first aspect, the RF antenna and the RFID tag chip are connected to each other before the power is turned on, thereby enabling reading and writing to the RFID tag chip from the outside. For this reason, information held in the RFID tag chip of the information portable terminal can be read and information can be written in a packed state where the power is not turned on. Then, by writing control information in the RFID tag chip, when the packaging is unpacked and the portable information terminal is turned on, the RF antenna and the RFID tag chip are started before wireless communication with the external RFID tag is started. Are connected, the communication circuit is connected to the chip side of the RFID tag, information held in the chip of the RFID tag is read, and control is performed based on the read information. That is, information for control can be written in the portable information terminal in a packed state where the power is not turned on.

In the portable information terminal according to the second aspect, the control means causes the LAN communication circuit to correspond to the radio wave output and frequency in the country of use from the information of the country of use read out from the RFID tag chip. For this reason, wireless LAN communication can be adapted to the radio wave output and frequency in the country of use by writing the country of use in the portable information terminal in the packaged state. As a result, it is possible to ship the LAN communication circuit (wireless LAN communication device or wireless LAN driver) with a specific country code set at the manufacturing stage, and the product number (inventory number) and man-hours can be reduced. By setting the country of use without unpacking at each base, it is possible to set the LAN standard (radio wave regulation) in the country of use before the LAN communication circuit operates.

In the information portable terminal of claim 3, before starting wireless communication with the RFID tag, it communicates with the chip side of the built-in RFID tag, determines whether the data read from the chip is normal, and is normal. When it is determined that there is, wireless communication with the RFID tag is started via the RF antenna. Only when communication with the chip side of the built-in RFID tag can be performed appropriately, wireless communication with the RFID tag is started via the RF antenna, so wireless communication with the RFID tag is not started in an abnormal state.

In the information portable terminal according to the fourth aspect, when it is determined that the data read from the chip is not normal, or when communication with the chip is not possible, the failure of the communication circuit is notified. For this reason, the occurrence of a failure can be detected before the start of reading, and this can be notified to the user.

In the information portable terminal according to claim 5, when it is determined that the data read from the chip is normal and the wireless communication with the RFID tag cannot be performed via the RF antenna, the communication circuit has no failure. Notice. For this reason, the user can be informed of the failure location.

In the information portable terminal according to claim 6, when it is determined that the data read from the chip is normal and wireless communication with the RFID tag is started via the RF antenna, there is an abnormality in reading the RFID tag. The communication with the chip side is performed again, it is determined whether or not the data read from the chip is normal, and if it is normal, the communication circuit is notified that there is no failure. For this reason, when a failure occurs in a circuit other than the communication circuit during use, this can be notified to the user.

FIG. 1A is a side view of an information code reader according to an embodiment of the present invention, and FIG. 1B is a perspective view of a packing container in which the information code reader is packed. It is a block diagram which shows the circuit structure of the information code reader which concerns on embodiment. It is explanatory drawing of connection switching of a 1st changeover switch and a 2nd changeover switch. It is a functional block diagram which shows the electrical structure inside a RFID tag. It is a graph which shows the example of the content of the information set to a RFID tag chip. It is a flowchart which shows the process in the information code reader of embodiment. It is a flowchart which shows the subroutine process of the initial setting in FIG.

Hereinafter, an embodiment in which an information portable terminal of the present invention is applied to an information code reader will be described with reference to FIGS.
The information code reader according to the embodiment is a handy type that a user holds and operates by hand, and reads optical information such as a barcode and a two-dimensional code attached to a product, and performs wireless communication with an RFID tag. It can be done.

FIG. 1A is a side view of the information code reader, and FIG. 1B is a perspective view of a packing container 70 packed with the information code reader.
The information code reader 10 includes an operation unit 12 that also serves as a grip, a liquid crystal display device 46, and the like. The operation unit 12 is provided with, for example, a plurality of key switches 41, and the operation contents are instructed by these key switches 41. In addition to the key switch 41, the operation unit 12 is provided with a trigger switch 42 for instructing start of reading. An optical system unit, which will be described later, is disposed in a substantially rectangular opening (reading opening) 18 formed at the front end of the casing 59 of the information code reader 10, and an RF antenna is disposed around the optical system unit.

The circuit configuration of the information code reader 10 will be described with reference to the block diagram of FIG.
The information code reader 10 is configured to be capable of reading optical information such as a barcode and a two-dimensional code, and reading and writing information of an RFID tag by wireless communication. The information code reader 10 is provided with a circuit unit 20. The circuit unit 20 mainly includes an optical system such as a light emitting diode 21, a condensing lens 24, a light receiving sensor 23, and an imaging lens 27, a wireless system including an RF antenna 58 and an RF communication circuit 52, a memory 35, and a control circuit. 40, a key switch 41, a trigger switch 42, a liquid crystal display device 46, and other microcomputer (hereinafter referred to as "microcomputer") systems.

The information code reader 10 of the embodiment further incorporates a one-chip IC tag chip 56 that constitutes an RFID tag. That is, the IC tag chip 56 is configured in the same manner as an IC tag chip in an RFID tag described later. The IC tag chip 56 is provided so that connection between the RF antenna 58 side and connection with the RF communication circuit 52 side can be switched by the first changeover switch 57A and the second changeover switch 57B. The first changeover switch 57A and the second changeover switch 57B are controlled by the control circuit 40 via the changeover control circuit 54. The IC tag chip 56, the first changeover switch 57A, the second changeover switch 57B, and the changeover control circuit 54 constitute an initial setting system of the information code reader.

First, the optical system will be described. The light emitting diode 21 functions as a light irradiator capable of irradiating the illumination light Lf, and is condensed by a condensing lens 24 in which a diffusion lens and a convex lens are combined. The light receiving sensor 23 includes an image sensor configured to be able to receive the reflected light Lr irradiated and reflected on the reading object R and the barcode B through the imaging lens 27. The imaging lens 27 functions as an imaging optical system capable of condensing incident light incident from the outside and forming an image on the light receiving surface 23 a of the light receiving sensor 23.

Next, a configuration outline of the microcomputer system will be described. The microcomputer system includes an amplification circuit 31, an A / D conversion circuit 33, a memory 35, an address generation circuit 36, a synchronization signal generation circuit 38, a control circuit 40, a key switch 41, a trigger switch 42, an LED 43, a buzzer 44, and a liquid crystal display device 46. The LAN communication circuit 48 and the like. As the name suggests, this microcomputer system is composed mainly of a control circuit 40 and a memory 35 that can function as a microcomputer (information processing device). The signal can be processed by software. The control circuit 40 also performs control related to the entire system of the information code reader 10.

An image signal (analog signal) output from the light receiving sensor 23 of the optical system is input to the amplification circuit 31 and amplified by a predetermined gain, and then input to the A / D conversion circuit 33. Converted into a digital signal. The digitized image signal, that is, image data is input to the memory 35 and stored. The synchronization signal generation circuit 38 is configured to generate a synchronization signal for the light receiving sensor 23 and the address generation circuit 36. The address generation circuit 36 is based on the synchronization signal supplied from the synchronization signal generation circuit 38. Thus, the storage address of the image data stored in the memory 35 can be generated.

The control circuit 40 is a microcomputer capable of controlling the entire information code reading device 10 and includes a CPU, a system bus, an input / output interface, and the like. The control circuit 40 can constitute an information processing device together with the memory 35 and has an information processing function. The control circuit 40 is configured to be connectable to various input / output devices (peripheral devices) via a built-in input / output interface. In this embodiment, the key switch 41, the trigger switch 42, the LED 43, A buzzer 44, a liquid crystal display device 46, a LAN communication circuit 48, and the like are connected. The control circuit 40 is configured to output the result of reading optical information such as a barcode and a two-dimensional code to the terminal management apparatus (not shown) side by wireless LAN communication via the LAN communication circuit 48.

The wireless system 50 including the RF antenna 58 and the RF communication circuit 52 is for performing wireless communication using radio waves with, for example, an RFID tag to supply power and read data. Here, not only reading data but also writing data to the RFID tag.

The RF communication circuit 52 constituting the wireless system 50 is controlled by the control circuit 40. The control circuit 40 outputs a power signal to the RF antenna 58 via the RF communication circuit 52, and demodulates the received signal received by the RF antenna 58 via the RF communication circuit 52 and extracts it as data. As a result, in the state where the RFID tag to be read is brought close to the RF antenna 58, power is supplied to the RFID tag by radio waves and wireless communication (writing and reading) of data is performed. Yes. The control circuit 40 outputs the information read from the RFID tag to the terminal management device (not shown) side by LAN communication via the LAN communication circuit 48 in the same manner as the processing with the optical information described above. Is sent to the RFID tag by the LAN communication.

FIG. 3 is an explanatory diagram of switching of connection between the first changeover switch 57A and the second changeover switch 57B. An IC tag chip 56 constituting the RFID tag chip of the present invention, a changeover switch 57B constituting the first changeover means of the invention, a second changeover switch 57B constituting the second changeover means of the invention, and a changeover control circuit 54. In the initial setting system, as shown in FIG. 3A, the first changeover switch 57A connects the RF antenna 58 and the IC tag chip 56, and the second changeover switch 57B Connect to the selector switch 57A side. That is, the RF antenna 58 and the IC tag chip 56 are disconnected from the RF communication circuit 52, and the RF antenna 58 and the IC tag chip 56 are connected. As a result, the information code reading device 10 is read by the external RFID reader / writer device to the IC tag chip 56 of the information code reading device 10 before being shipped in the packaging container 70 shown in FIG.・ Lighting is possible.

When the information code reader 10 is unpacked and the power is turned on, before the RFID tag is read / written, as shown in FIG. 3B, the first changeover switch 57A is on the second changeover switch 57B side. And the second changeover switch 57B connects the IC tag chip 56 to the RF communication circuit 52 side. Thereby, the information written in the IC tag chip 56 is read and the operation of the RF communication circuit 52 is confirmed. That is, at the time of activation, the control circuit 40 constituting the control means switches the second changeover switch 57B to the IC tag chip 56 side via the switching control circuit 54, communicates with the IC tag chip 56 side, and transfers data from the IC tag chip 56. Based on the read data, initialization is performed as described later based on the data, and it is determined whether the read data is normal.

When the data can be normally read from the IC tag chip 56, the RF communication circuit 52 is operating normally. Therefore, as shown in FIG. 3C, the first changeover switch 57A is connected to the RF antenna 58 side. The second changeover switch 57B disconnects the connection with the IC tag chip 56 and connects the RF communication circuit 52 to the first changeover switch 57A, that is, the RF antenna 58 side. As a result, wireless communication for reading and writing can be started with respect to the external RFID tag via the RF antenna 58.

FIG. 4 is a functional block diagram showing an electrical configuration inside the RFID tag 80 to be read / written by the information code reader 10. The RFID tag 80 includes an antenna (LC resonance circuit coil) 82 and one IC chip 90. The IC chip 90 includes a rectification unit 92, a clock extraction unit 98, a CPU 94, a memory 96, and a modulation unit 99. The IC chip 90 has the same configuration as the IC tag chip 56 built in the information code reader 10 described above.

When the antenna 82 receives the radio wave signal transmitted from the information code reader 10, the rectifier 92 of the IC chip 90 rectifies and smoothes the received signal and supplies the operating power to the CPU 94 and the received signal. The demodulated demodulated data is output to the CPU 94. The clock extraction unit 98 supplies a clock signal extracted from the signal received by the antenna 82 to the CPU 94. The CPU 94 reads / writes data from / to the nonvolatile memory 96.

Further, the CPU 94 serially outputs transmission data to the modulation unit 99. The modulation unit 99 is connected to the antenna 82. The memory 96 of the RFID tag 80 stores ID data of the RFID tag 80, a code used for authentication processing at the time of communication, data on the user of the RFID tag 80 that is originally intended to be read by the information code reader 10 and the like. ing.

In the embodiment, the IC tag chip 56 built in the information code reading device 10 holds initial setting information for operating the information code reading device. The data held in the IC tag chip 56 will be described with reference to the chart of FIG. The IC tag chip 56 includes, for example, a country-specific setting (country code) for identifying the country in which the RFID tag is used, an adjustment value of output power at the time of shipment of the information code reader, and a product of the information code reader A serial number which is a number is stored. On the other hand, on the memory 35 side, the wireless LAN standard (output frequency, output power, wireless communication protocol) corresponding to the country setting and the standard (output frequency, output power, wireless) corresponding to the RFID tag country setting are provided. As described later, a wireless LAN standard (output frequency, output power, wireless communication protocol) corresponding to the country-specific setting is set in the LAN communication circuit 48, and the country of the RFID tag is set. The RF communication circuit 52 is initialized to another standard (output frequency, output power, wireless communication protocol).

Next, read / write processing to the RFID tag by the information code reader 10 will be described with reference to the flowchart of FIG. 6 showing the processing.
As shown in FIG. 1B, the information code reader 10 is packed in the packing container 70, that is, before the power is turned on (S10: No), with reference to FIG. As described above, the first changeover switch 57A connects the RF antenna 58 and the IC tag chip 56 (S6), and the second changeover switch 57B is connected to the first changeover switch 57A side (S8). . As a result, the information code reading device 10 is read by the external RFID reader / writer device to the IC tag chip 56 of the information code reading device 10 before being shipped in the packaging container 70 shown in FIG.・ Lighting is possible. For example, in the manufacturing stage of the information code reader 10, the LAN communication circuit 48 and the RF communication circuit 52 are shipped from the factory with a specific country code (US) set, and are not unpacked at each site. The country of use (country setting: UK) is written in the IC tag chip 56 as described above with reference to FIG.

When the information code reader 10 is taken out of the packaging container 70 and connected to a power source (not shown), control is performed as described above with reference to FIG. 3B before starting wireless communication (S10: Yes). The circuit 40 connects the first changeover switch 57A to the second changeover switch 57B side via the changeover control circuit 54 and disconnects it from the RF antenna 58 (S12), and the second changeover switch 57B causes the IC tag chip 56 to RF. Connect to the communication circuit 52 side (S14). Then, after setting 3 as the communication confirmation count n (S16), the communication is performed with the IC tag chip 56 side, and the data described above with reference to FIG. 5 held in the IC tag chip 56 is read (S18). The communication confirmation count n can be set to any number by operating the key switch 41 (see FIG. 1) of the information code reader. Next, it is determined whether or not the data read from the IC tag chip 56 is normal (S20). Here, the control circuit 40 holds the serial number of the information code reader 10 and determines whether it matches the serial number read from the IC tag chip 56. If the data cannot be read or if the data is incorrect (S20: No), the data is read again after waiting for the set time (for example, 1 second) (S40). Here, the set time can be set by operating the key switch 41 (see FIG. 1) of the information code reader. When the set time has elapsed (S40: Yes), 1 is subtracted from the communication confirmation number n (S42), and it is determined whether the communication confirmation number n is 0, that is, the set three communication confirmations have been completed (S44). Before the communication confirmation is performed three times (S44: No), the process returns to S18 and tries to read data from the IC tag chip again. On the other hand, if the communication confirmation is performed three times and proper data cannot be read (S44: Yes), the abnormality of the RF communication circuit is displayed on the liquid crystal display device 46 (see FIGS. 1 and 2) (S46).

On the other hand, if the data (serial number) read from the RFID tag is appropriate (S20: Yes), this is used as log data, and is stored as self-diagnosis data when diagnosing subsequent normal / abnormality, and the switching control circuit The second changeover switch 57B is switched to the RF antenna 58 side via 54, and the RF antenna 58 and the RF communication circuit 52 are connected to prepare for reading / writing of the external RFID tag (S22). Then, initial setting is performed using the information {country setting (country code), output power adjustment value} described above with reference to FIG. 5 held in the IC tag chip 56 read at the time of the communication confirmation. (S100).

The initial setting process in S100 will be described with reference to FIG. 7 which is a subroutine of the process. The country code held in the IC tag chip 56 and the adjustment value of the output power at the time of shipment are acquired (S102), and the country code set in the information code reader is acquired from the memory 35 (S104). Then, it is determined whether or not the country codes match (S106). If the country codes match (S106: Yes), the initialization process has been completed since the initialization has already been completed at the shipping stage.

On the other hand, if the country codes do not match (S106: No), the wireless LAN standard (output frequency, output power, wireless communication protocol) corresponding to the country code set on the IC tag chip 56 side is read from the memory 35, and the LAN The standard is set in the communication circuit 48 (S108). Further, the RFID tag corresponding to the country code (standard output frequency, output power, wireless communication protocol) corresponding to the country-specific setting is read out, and the adjusted value of the output power at the time of shipment is used, and the RF communication circuit 52 is The standard is set (S110), and the initialization process is terminated.

If there is an RFID tag read / write command after completion of the initial setting in S100 (S26: Yes), read / write to the RFID tag is performed (S28). Then, it is determined whether communication can be performed normally and reading / writing can be performed properly (S30). If communication can be properly performed (S30: Yes), the process returns to S26 and reading / writing to the RFID tag is repeated until the power is turned off (S34: No).

Here, when there is an abnormality in communication (S30: No), it communicates with the IC tag chip again to confirm whether or not the RF communication circuit is normal. That is, the second changeover switch 57B is switched to the IC tag chip 56 side via the changeover control circuit 54 (S52). Then, it communicates with the IC tag chip 56 side and reads data held in the IC tag chip 56 (S54). It is determined whether the data read from the IC tag chip 56 is normal (S56). If the data cannot be read or if the data is incorrect (S56: No), the liquid crystal display device 46 (FIGS. 1 and 2) indicates that there are abnormal factors in the RF communication circuit and other normalities. Display) (S58).

In the information code reader 10 according to the embodiment, it is determined that the data read from the IC tag chip 56 is normal, wireless communication with the RFID tag is started via the RF antenna, and then there is an abnormality in reading the RFID tag. (S30: No), it communicates with the IC tag chip 56 again (S54), and determines whether the data read from the IC tag chip 56 is normal (S56). The normality of the communication circuit and other abnormal factors are displayed (S58). For this reason, when a failure such as a failure of an RF antenna other than the RF communication circuit occurs during use, for example, a failure is notified to the user and the fact that the information code reader is unusable. Can do.

The information code reader 10 of the embodiment communicates with the built-in IC tag chip 56 side before starting wireless communication with the RFID tag (S18), and determines whether or not the data read from the chip 56 is normal. When it is determined that it is normal (S20: Yes), read / write wireless communication is started with respect to the RFID tag via the RF antenna 58 (S22, S28). Only when communication with the built-in IC tag chip 56 can be properly performed, wireless communication with the RFID tag is started in an abnormal state in order to start reading and writing wireless communication with the RFID tag via the RF antenna. There is no.

Furthermore, in the information code reader of the embodiment, the adjustment value of the output power at the time of shipment, which is unique information of each information code reader, is held on the IC tag chip 56 side, so that the output power of the information code reader can be increased. It can be adjusted and operated properly.

In the information code reader 10 of the embodiment, the control circuit 40 causes the LAN communication circuit 48 to correspond to the radio wave output and frequency in the use country from the information (country code) of the use country read from the IC tag chip 56. (S100). For this reason, wireless LAN communication can be adapted to the radio wave output and frequency in the country of use by writing the country of use in the information code reader 10 in the packed state. As a result, it is possible to ship the LAN communication circuit 48 in a state where a specific country code is set in the manufacturing stage, and the product number (inventory number) and man-hours can be reduced. By setting the country of use without unpacking at each base, the LAN standard (radio wave regulation) in the country of use can be set before the LAN communication circuit 48 operates.

In the embodiment described above, the universal type information code reader capable of reading the optical information and reading / writing the RFID tag is exemplified as the information portable terminal. However, the portable information terminal that only reads / writes the RFID tag is exemplified. Needless to say, it is applicable. Moreover, in the example mentioned above, although the handy type was illustrated, it is applicable also to a stationary type.

DESCRIPTION OF SYMBOLS 10 Information code reader 40 Control circuit 48 LAN communication circuit 52 RF communication circuit 54 Switching control circuit 56 IC tag chip 57A 1st switching switch 57B 2nd switching switch 58 RF antenna

Claims (6)

An information portable terminal having an RFID tag read / write function for performing wireless communication with an RFID tag via an RF antenna,
An RFID tag chip arranged to be connectable to the RF antenna;
First switching means for switching connection / disconnection between the RF antenna and the RFID tag chip;
A communication circuit that communicates with an external RFID tag when connected to the RF antenna side, and a communication circuit that communicates with the chip of the RFID tag when connected to the chip side of the RFID tag;
A second switching means for switching the connection of the communication circuit between the RF antenna side and the RFID tag chip side;
Control means for performing control based on information read from the chip of the RFID tag,
Before the information portable terminal is turned on, the first switching unit connects the RF antenna and the RFID tag chip, enabling reading / writing to the RFID tag chip from the outside,
After the information portable terminal is turned on and before the start of wireless communication with an external RFID tag, the first switching means disconnects the RF antenna and the RFID tag chip, and the second switching means Connect the communication circuit to the chip side of the RFID tag, read the information held in the chip of the RFID tag, perform control based on the read information, and start wireless communication with the external RFID tag Sometimes, the second switching means connects the communication circuit to the RF antenna side to enable read / write to an external RFID tag. A LAN communication circuit for performing wireless LAN communication;
2. The information portable terminal according to claim 1, wherein the control means associates the LAN communication circuit with the radio wave output and frequency in the use country based on the information on the use country read from the chip of the RFID tag. . Before starting the wireless communication with the external RFID tag, the control means reads the information held in the chip of the RFID tag, determines whether the data read from the chip is normal, and is normal 2. The portable information terminal according to claim 1, wherein the communication circuit is connected to the RF antenna side by the second switching unit to enable read / write to an external RFID tag. 4. A communication circuit failure notification means for notifying the failure of the communication circuit when it is determined that data read from the chip is not normal or when communication with the chip is not possible. Information mobile devices. When it is determined that the data read from the chip is normal, the log data is stored and self-diagnosis means is provided so that the data can be confirmed, and wireless communication with the RFID tag cannot be performed via the RF antenna. 5. The information portable terminal according to claim 3, wherein the self-diagnosis means notifies that there is no failure in the communication circuit. When it is determined that the data read from the chip is normal and the second switching means starts wireless communication with the RFID tag via the RF antenna, then there is an abnormality in wireless communication with the RFID tag. A communication circuit that communicates with the chip side of the RFID tag again by the second switching means, determines whether or not the data read from the chip is normal, and notifies that there is no failure in the communication circuit if it is normal The information portable terminal according to claim 3, further comprising a normal notification means.

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