JP2012100164A - Wireless communication device and control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save time and effort to check presence/absence of one's belongings manually, and to prevent the belongings from being left behind without fail.SOLUTION: A mobile phone 1, as a wireless communication device according to one embodiment, includes transmission means, reception means, and notification means. The transmission means wirelessly transmits an inquiry signal to an RFID tag 2 at predetermined intervals, and the reception means receives a response signal wirelessly transmitted from the RFID tag 2 in response to the inquiry signal. The notification means notifies that the response signal from the preliminary designated RFID tag 2 is not received in the reception means for a predetermined period of time.

Description

  Embodiments described herein relate generally to a wireless communication apparatus that performs wireless communication with a wireless tag attached to an article and performs various types of information processing using information obtained from the wireless tag through the wireless communication, and a control program therefor.

  It is possible to read data from the memory mounted on the wireless tag or write data to the memory by performing wireless communication using radio waves with the wireless tag existing in the communication area of this antenna. Wireless communication devices have been developed and put into practical use. A unique tag code is stored in the memory of each wireless tag, and the wireless tag can be individually identified by reading the tag code. Such a wireless tag is called RFID (Radio Frequency Identification). The wireless communication device is also called an RFID reader.

Japanese Patent Laid-Open No. 2005-216048

  In various scenes of our daily lives, we often forget to put our belongings that we carry on the day or put in bags. Such misplacement can be prevented to some extent by checking one's belongings at a predetermined timing such as when moving from a certain place. However, the confirmation work is troublesome, and there is a case where the confirmation work is forgotten or there is no time to carry out the confirmation work for an emergency. Further, even if the confirmation operation is performed, a confirmation failure may occur.

  Under these circumstances, it has been necessary to take measures to prevent the misplacement of belongings while saving the trouble of manually checking the existence of the belongings.

  The wireless communication apparatus according to one aspect includes a transmission unit, a reception unit, and a notification unit. The transmission means wirelessly transmits an inquiry signal for the wireless tag at a predetermined interval, and the reception means receives a response signal wirelessly transmitted from the wireless tag in response to the inquiry signal. Then, the notifying means notifies that in response to a response signal from a wireless tag designated in advance being not received by the receiving means for a predetermined time.

The figure which shows the system configuration | structure in one Embodiment. The figure which shows the RFID tag in the embodiment. The figure which shows the RFID tag in the embodiment. The block diagram which shows the control circuit of the mobile telephone in the same embodiment. The schematic diagram which shows the data structural example of the registration tag table in the embodiment. The flowchart which shows the flow of the registration process in the embodiment. The schematic diagram which shows an example of the registration screen in the embodiment. The schematic diagram which shows an example of the designation | designated screen in the embodiment. The flowchart which shows the flow of the forgotten thing warning process in the embodiment. The schematic diagram which shows the example of a data structure of the designation | designated tag table in the embodiment.

Hereinafter, an embodiment will be described with reference to the drawings.
In this embodiment, as an example of a wireless communication device, a mobile phone having a communication function with a base station for telephone calls and packet communication is illustrated.

(First embodiment)
[System configuration]
A system configuration in the present embodiment is shown in FIG. This system includes a mobile phone 1 that functions as a wireless communication device in the present embodiment, and a plurality of RFID tags 2 that are wireless tags attached to articles.

  The casing of the mobile phone 1 includes, for example, a display 12 which is an LCD (Liquid Crystal Display), an input unit 13 including a plurality of operation buttons and a touch panel provided on the display surface of the display 12, and the base A mobile phone antenna 17 for communication with a station is provided. The mobile phone 1 includes a reader unit 16 that transmits an inquiry signal to the RFID tag 2 and receives a response signal from the RFID tag 2 (see FIG. 4). The inquiry signal from the reader unit 16 is transmitted toward the periphery of the mobile phone 1 to form a communication area that is large enough to cover the user who has the mobile phone 1.

  The RFID tag 2 before being attached to an article is configured, for example, by providing an inlet having an IC 21 and a pair of antennas 22 on a tag base 20 formed of a resin material or the like as shown in FIG. In the memory in the IC 21, a tag code that is not duplicated in each RFID tag 2, for example, SGTIN (serial number + JAN code) of the seller of the RFID tag 2 is stored.

  The RFID tag 2 having such a configuration is stored in a state where an adhesive layer is formed on the back surface of the tag base 20 and a plurality of sheets are attached to the release paper 3 in a line. Then, when the user peels off the RFID tag 2 from the release paper 3 and affixes it to a desired article, it is attached to the article.

  For example, as shown in FIG. 3, the RFID tag 2 is a key holder type in which an inlet having an IC 21 and an antenna 22 is embedded in a thick tag base 23 and a ring 24 for attachment to an article is provided on the base 23. It may be. In this way, the RFID tag 2 can be easily attached to an article that is difficult to attach, for example, the key 25 as shown. In addition, various methods can be employed for attaching the RFID tag 2 such as attaching the RFID tag 2 to an article with a clip.

[Control circuit]
FIG. 4 shows a control circuit of the mobile phone 1. The mobile phone 1 includes a main control unit 10 mainly composed of a CPU (Central Processing Unit). The memory 11, the display 12, the input unit 13, the communication unit 14, the voice input / output unit 15, and the reader unit 16 are connected to the main control unit 10, the antenna 17 is connected to the communication unit 14, and the voice input is performed. A speaker 18 and a microphone 19 are connected to the output unit 15 to constitute a control circuit of the mobile phone 1. In addition, each part which comprises the said control circuit operate | moves by receiving the power supply from the battery 100 attached to the housing | casing of the mobile telephone 1, for example.

  The memory 11 is configured by a ROM (Read Only Memory) or a RAM (Random Access Memory), and stores a control program executed by the main control unit 10, a registration tag table 111 (see FIG. 5) described later, and the like.

  The communication unit 14 controls mutual communication with the mobile phone base station performed via the antenna 17.

  The microphone 19 collects sound around the mobile phone 1 to generate a sound signal, and outputs the sound signal to the sound input / output unit 15. The voice input / output unit 15 performs A / D conversion on the voice signal input from the microphone 19 and outputs it to the main control unit 10. In addition, the voice input / output unit 15 generates a voice signal according to a command from the main control unit 10 and outputs the voice signal to the speaker 18. The speaker 18 generates actual sound according to the sound signal input from the sound input / output unit 15.

The reader unit 16 includes a reader control unit 160, a transmission unit 161, the antenna 162, a reception unit 163, and an AGC (Automatic Gain Control) circuit 164.
The transmission unit 161 modulates a predetermined carrier wave with the analog transmission data signal supplied from the reader control unit 160, amplifies the modulated signal, and supplies the amplified signal to the antenna 162. The antenna 162 radiates the signal supplied from the transmission unit 161 as a radio wave (inquiry signal) and receives the radio wave (response signal) transmitted from the RFID tag 2 existing in its own communication area to receive analog signals. Generate a data signal. This received data signal is supplied to the receiving unit 163. The receiving unit 163 amplifies the reception data signal supplied from the antenna 162, performs demodulation to remove a predetermined carrier component from the amplified signal, and outputs a signal in a predetermined low frequency band among the demodulated signals to an LPF (Low Pass). Perform the extraction process in (Filter). The extracted signal is supplied to the AGC circuit 164. The AGC circuit 164 amplifies the signal supplied from the receiving unit 163 and adjusts the gain so that the amplified signal level becomes a constant appropriate level. An output signal of the AGC circuit 164 is supplied to the reader controller 160.

The main control unit 10 functions as a selection unit 101, a registration unit 102, a designation unit 103, and a warning unit 104 (notification means) by executing a control program stored in the memory 11. The main control unit 10 also includes a timer 105 that functions as a time measuring means.
The selection unit 101 accepts selection of processing to be executed from the registration processing of the RFID tag 2 and the forgotten item warning processing (notification processing).
The registration unit 102 executes the registration process when the selection unit 101 selects the registration process, and registers the RFID tag 2 identified by the response signal received by the reception unit 163 in the registration tag table 111. Details of the registration process will be described later with reference to FIGS.
The designation unit 103 accepts designation of the RFID tag 2 to be monitored in the forgotten object warning process from among the RFID tags 2 registered in the registration tag table 111. Details of the operation of the designation unit 103 will be described later with reference to FIG.
The warning unit 104 issues a warning when the response signal from the RFID tag 2 to be monitored that has been designated by the designation unit 103 is not received by the reader unit 16 for a predetermined time. Details of the operation of the warning unit 104 will be described later with reference to FIG.

The registration tag table 111 stored in the memory 11 will be described.
FIG. 5 is a schematic diagram illustrating a data structure example of the registration tag table 111. The table 111 includes a record in which a tag code read from the RFID tag 2 by the reader unit 16 in the registration process and a character string such as a registration name input via the input unit 13 are associated with each other. FIG. 5 shows a state in which several records have already been generated, but there is no record in the table 111 after the registration tag table 111 is cleared at the beginning of shipment of the mobile phone 1 or by a predetermined process. It becomes a state.

Next, the operation of the mobile phone 1 will be described.
When the cellular phone 1 is idle, the selection unit 101 accepts selection of either tag code registration processing or forgotten item warning processing. At this time, when the registration process is selected by the operation of the input unit 13, the registration process by the registration unit 102 is executed, and when the forgotten item warning process is selected by the operation of the input unit 13, the forgotten item by the designation unit 103 and the warning unit 104. Warning processing is executed.
Hereinafter, each process will be described.

[registration process]
The registration process is a process for newly registering a predetermined RFID tag 2 in the registration tag table 111. Specifically, a record in which a tag code of the RFID tag 2 to be registered and a registered name that can identify an article to be managed by attaching the RFID tag 2 is newly registered in the registration tag table. 111.

  FIG. 6 is a flowchart showing the flow of registration processing. When the user operates the input unit 13 to instruct the start of the registration process, the registration unit 102 displays the registration screen 5 shown in FIG. 7A on the display 12 (step S101). The registration screen 5 includes a message for prompting reading of the RFID tag 2, an area 51 for displaying the read tag code, an area 52 for displaying the input registered name, a menu button 53, and a return button. Button 54 is arranged.

  After displaying the registration screen 5, the registration unit 102 outputs a read command to the reader unit 16 (step S102) and waits for a response from the RFID tag 2 (No in step S103). Upon receiving the read command, a transmission data signal is output from the reader control unit 160 to the transmission unit 161, and an inquiry signal is wirelessly transmitted from the antenna 162. At this time, if at least one RFID tag 2 exists in the communication area of the antenna 162, a response signal is wirelessly transmitted from the RFID tag 2.

  When the user puts the RFID tag 2 within the communication area of the antenna 162, a response signal wirelessly transmitted from the RFID tag 2 is received by the antenna 162 and input to the reader control unit 160 via the reception unit 163 and the AGC circuit 164. Is done. The reader controller 160 outputs the input response signal to the main controller 10. At this time, the registration unit 102 determines whether or not the RFID tag 2 identified by the response signal input to the main control unit 10 has been registered in the registration tag table 111 (step S104). Specifically, the tag code indicated by the response signal input to the main control unit 10 is compared with the tag code of each record in the registered tag table 111. If there is a matching record, the RFID tag 2 If it is determined that the RFID tag 2 has been registered, and if there is no matching record, it is determined that the RFID tag 2 has not been registered.

  When it is determined that the RFID tag 2 identified by the response signal has not been registered (No in step S104), the registration unit 102 registers the tag code indicated by the response signal on the registration screen 5 as illustrated in FIG. 7B. Are displayed in the area 51. And in the state which receives the input of a registration name (step S105), the completion of the input is waited (No of step S106). At this time, when the user operates the input unit 13 to input a registered name, the input name is displayed in the area 52.

  Further, when the user operates the input unit 13 and operates the OK button 55 arranged on the registration screen 5b, the registration unit 102 determines that the input of the registered name is completed (Yes in step S106). At this time, the registration unit 102 refers to the registration tag table 111 and determines whether or not the input registration name is used (step S107). If it is determined that the tag is not used (Yes in step S107), the registration unit 102 generates a record in which the tag code displayed in the area 51 is associated with the registered name displayed in the area 52. It adds to the registration tag table 111 (step S108). Thus, the RFID tag 2 is newly registered in the registration tag table 111, and the registration process ends.

  On the other hand, if it is determined in step S104 that the RFID tag 2 has already been registered in the registration tag table 111 (Yes in step S104), and the registration name input in step S107 is used. If it is determined (No in Step S107), the registration unit 102 notifies that the RFID tag 2 has been registered and that the registered name has already been used (Step S109). This notification is performed, for example, by displaying a message “This tag has already been registered” on the registration screen 5 as shown in FIG. After this notification, the registration unit 102 executes processing according to the operation. For example, if the return button 54 is operated, the tag code and the registered name displayed in the areas 51 and 52 are discarded, the process returns to the process of step S102, and reading of the RFID tag 2 is tried again. If the menu button 53 is operated, an “edit” button and a “delete” button are displayed on the registration screen 5 as shown in FIG. In this registration screen 5, if the “edit” button is operated, the tag code and the registered name displayed in the areas 51 and 52 are edited, and if the “delete” button is operated, the tags 51 and 52 are displayed. The tag code and registered name therein are discarded, and the process returns to step S102 to try reading the RFID tag 2 again.

  With such a flow registration process, the user can register a desired RFID tag 2 as a management target by the mobile phone 1.

[Forgotten Items Warning Processing]
The forgotten item warning process issues a warning when the RFID tag 2 registered in the registered tag table 111 (that is, the article to which the RFID tag 2 is attached) is left somewhere designated by the designation unit 103. It is a process to emit.
First, the starting procedure of the forgotten item warning process will be described.
When the selection unit 101 accepts selection of the forgotten item warning process by operating the input unit 13 when the cellular phone 1 is idle, the designation unit 103 causes the display 12 to display the monitoring target designation screen 6 shown in FIG. . On the designation screen 6, a list of registered names of each record in the registered tag table 111 is displayed together with a check box. Further, a menu button 61 and a return button 62 are arranged below each registered name displayed in a list, and a scroll bar 63 is arranged to the right of each registered name. When any registered name is designated by the input unit 13, a check box adjacent to the registered name is checked. When a large number of records are registered in the registration tag table 111 and not all registered names can be displayed at once on the designation screen 6, only a part of them are displayed and a scrolling operation using the scroll bar 63 is performed. The registered name displayed at the time is switched. When the return button 62 is operated, the designation screen 6 is deleted, and the selection of the processing by the selection unit 101 is performed again.

  When the menu button 61 is operated by the input unit 13, as shown in FIG. 8B, a process to be executed is selected from “Forgetthing Warning”, “List Management”, “Refine Search”, and “Delete”. A list for this purpose and an OK button 64 are displayed. When the OK button 64 is operated in a state where “list management” is selected by the operation of the input unit 13, editing processing of each record in the registration tag table 111 is started. In addition, when the OK button 64 is operated in a state where “search refinement” is selected by the operation of the input unit 13, for example, a registration name that matches all or part of a character string input by the input unit 13 is designated. A search process is started in which the search result is notified by searching from the list display of 6 and changing the display color of the found registered name. Further, when the OK button 64 is operated with “Delete” selected by the operation of the input unit 13, the record corresponding to the registered name whose check box is checked is deleted from the registered tag table 111.

  When at least one check box is checked by the operation of the input unit 13, the “forgotten item warning” is selected, and when the OK button 64 is operated, the warning unit 104 starts the forgotten item warning process. This process continues to operate as a back process even while each function of the mobile phone 1 is in use, such as making and sending / receiving a call or email.

  FIG. 9 is a flowchart showing the flow of the lost item warning process. At the beginning of the process, the warning unit 104 first inputs the tag code of the RFID tag 2 to be monitored designated by the designation unit 103, that is, the tag code corresponding to the registered name whose check box is checked on the designation screen 6. It extracts from 111 (step S201). Thereafter, the warning unit 104 generates the designated tag table 112 shown in FIG. 10 in the memory 11 using the extracted tag code (step S202). The table 112 is configured by providing an area for describing the presence / absence of a response from the RFID tag 2 identified by each tag code for each of the extracted tag codes. In each area, the presence / absence of a response to the last three inquiry signal transmissions is described as either “1 (response present)” or “0 (response absent)”. In the example shown in the figure, the designation generated when the forgotten object warning process is started in a state in which “key case”, “USB memory”, and “work mobile phone” are designated on the designation screen 6 in FIG. A tag table 112 is shown. That is, for the tag codes “code C1”, “code C4”, and “code C5” respectively corresponding to “key case”, “USB memory”, and “work mobile phone” in the registered tag table 111 shown in FIG. An area for describing the presence or absence of the response is provided.

  After generating the designated tag table 112 having such a configuration, the warning unit 104 outputs a read command to the reader unit 16 (step S203) and causes the timer 105 to start time counting (step S204).

  Upon receiving the read command, a transmission data signal is output from the reader control unit 160 to the transmission unit 161, and an inquiry signal is wirelessly transmitted from the antenna 162. At this time, a response signal is wirelessly transmitted from each RFID tag 2 existing in the communication area of the antenna 162, and these response signals are received by the antenna 162 and input to the reader control unit 160 via the reception unit 163 and the AGC circuit 164. The The reader controller 160 outputs each input response signal to the main controller 10.

  After the processing of steps S203 and 204, the warning unit 104 collates the tag code indicated by the response signal input from the reader control unit 160 to the main control unit 10 with the tag code of the RFID tag 2 to be monitored, The presence or absence of a response from the RFID tag 2 to be monitored is determined (step S205). The presence / absence of the determined response is described in the designated tag table 112 (step S206). Since it is now determined whether or not there is a response to the first read command output after the forgotten item warning process is started, the presence or absence of a response is described in the “current” area in the process of step S206. When no RFID tag 2 exists in the communication area of the antenna 162, no response signal is output from the reader control unit 160 to the main control unit 10. In this case, “0 (no response)” is described in the “current” area for all tag codes.

  After describing the presence / absence of a response in the designated tag table 112, the warning unit 104 refers to the designated tag table 112 and determines whether or not there is an RFID tag 2 for which there is no response three times in succession (step S207). Since this is the process for the first read command output after the forgotten item warning process is started, the presence / absence of response is described only in the “current” area, and the presence / absence of response is described in the “previous” and “previous” areas. Not. Therefore, it is determined that there is no RFID tag 2 that has not been responded three times in succession (No in step S207), and the warning unit 104 determines whether or not an instruction to end a series of processes has been issued (step S208). If the user has not instructed the end of the process (No in step S208), the warning unit 104 waits until the time count of the timer 105 reaches a predetermined waiting time T (T> 0) (step S209). No). Eventually, when the time count of the timer 105 reaches the waiting time T (Yes in step S209), the warning unit 104 outputs a read command again (step S203), and resets the time count of the timer 105 (step S204). The waiting time T is a time for adjusting the output interval of the read command, and is set to 2 seconds, for example. In this case, read commands are output at intervals of approximately 2 seconds.

  In the process of step S206 after the second read command output, the warning unit 104 shifts the presence / absence of the response described in the “current” area of the designated tag table 112 to the “previous” area, and the “current” area. Describes the presence / absence of the response determined in the immediately preceding step S205. After that, in the process of step S207, it is determined that there is no RFID tag 2 that has not been responded three times since the presence / absence of a response is not described in the “previous” area (No in step S207), and step S208. Proceed to the process.

  In the processing of step S206 after the third and subsequent read command outputs, the warning unit 104 determines whether or not there are responses described in the “current” and “previous” areas of the designated tag table 112 as “previous” and “previous”, respectively. In the “current” area, the presence / absence of the response determined in the immediately preceding step S205 is described. Thereafter, in the processing of step S207, whether or not there is a tag code in which “0 (no response)” is described in all of “current”, “previous”, and “previous” for each tag code in the designated tag table 112. Determine. If there is no such tag code, the process proceeds to step S208.

  On the other hand, if there is a tag code in which “0 (no response)” is described in all of “current”, “previous”, and “previous” (Yes in step S207), the warning unit 104 indicates that the mobile phone 1 is currently It is determined whether or not a call is being made by the communication unit 14 (step S210). When the call is not in progress (No in Step S210), the warning unit 104 causes the speaker 18 to generate a warning sound such as a beep (Step S211). In accordance with this, the registered name of the tag code in which “0 (no response)” is described in all of “current”, “previous”, and “previous” is extracted from the registered tag table 111, and the extracted registered name is It is displayed on the display 12 together with a warning message that there is something left behind. Thus, it is notified that there are some designated RFID tags 2 for which a response signal cannot be obtained three times in succession. The warning process in step S211 is continuously executed until a warning cancellation is instructed by an operation of the input unit 13.

  When the warning cancellation is instructed (Yes in step S212), the warning unit 104 stops the generation of the warning sound and deletes the warning message on the display 12 and the like. Thereafter, the process proceeds to step S208. Note that a snooze function may be employed so that a warning is issued at regular intervals even after a warning cancellation is instructed. When such a snooze function is employed, ON / OFF of the snooze function may be switched by setting.

  In the process of step S210, when the mobile phone 1 is in a call by the communication unit 14 (Yes in step S210), the warning unit 104 proceeds to the process of step S208. In other words, no warning is given even if a response signal is not obtained three times in succession from any RFID tag 2 to be monitored during a call.

  After the forgotten item warning process is started, when the user operates the input unit 13 to instruct the end of the forgotten item warning process (step S208), the warning unit 104 ends the series of processes shown in FIG.

  In this way, the warning unit 104 issues a warning in response to the fact that a response signal from the RFID tag 2 to be monitored cannot be obtained for a predetermined time (about waiting time T × 3), and notifies that fact. Further, when a plurality of RFID tags 2 are designated on the designation screen 6, if any one of the designated RFID tags 2 cannot receive a response signal for a predetermined time, a warning is issued. Inform the effect.

[Action]
The operation of this embodiment will be described.
The user of the mobile phone 1 attaches the RFID tag 2 to the mobile phone 1 in order to manage items and the like that are easily left behind on the go, etc., and executes registration processing to register the attached RFID tag 2 in the registration tag table 111. Register with.

  Thereafter, for example, when the user goes out, the RFID tag 2 attached to his / her belongings on that day is designated as a monitoring target on the designation screen 6 and the forgotten object warning process is started. At this time, when an article to which the RFID tag 2 to be monitored is attached is put in a bag or the like carried by the user, a response signal is obtained from the RFID tag 2, and no warning is issued.

  When the user goes out and uses the article to which the RFID tag 2 to be monitored is attached and leaves the mobile phone 1 with the mobile phone 1 forgotten, the RFID tag 2 communicates with the reader unit 16. Out of the area, the response signal from the RFID tag 2 cannot be obtained. In this case, a warning sound is emitted from the speaker 18 when the response signal from the RFID tag 2 cannot be obtained three times in succession, so that the user can recognize that there is something left behind.

  Further, a method of using the key holder type RFID tag 2 shown in FIG. 3 in a belt through hole of jeans or the like and starting the forgotten object warning process with the RFID tag 2 as a monitoring target can be assumed. In this case, if the user leaves the place with the mobile phone 1 placed somewhere, the RFID tag 2 to be monitored is removed from the communication area of the reader unit 16, and the response signal from the RFID tag 2 cannot be obtained. A warning sound is emitted from the speaker 18 and the user can detect that the mobile phone 1 has been left behind.

As described above, the cellular phone 1 according to the present embodiment can easily and surely detect the presence or absence of forgotten items by wireless communication using the reader unit 16 by utilizing the forgotten item warning process by the warning unit 104.
In addition, when the mobile phone 1 is busy, no forgotten warning is given. Therefore, when the user is temporarily away for a call during a gathering of a plurality of people, a warning sound is not generated and the call is not disturbed.

(Modification)
The configuration disclosed in the above embodiment can be variously modified. Specific examples of modifications are as follows.

(1) In the above embodiment, the case where the mobile phone 1 is provided with the reader unit 16 and the mobile phone 1 executes the registration process and the left-behind item warning process is exemplified. However, the reader unit 16 may be externally attached to the external connection terminal of the mobile phone 1. In addition, a reader unit 16 may be provided in a terminal other than a mobile phone, for example, a handy terminal used for article management in a warehouse or a store, and the handy terminal may execute a registration process or a lost article warning process.

(2) In the above embodiment, the registration process is performed by the mobile phone 1 and the tag data of the RFID tag 2 to be managed is registered in the registration tag table 111. However, the registration tag table 111 is created using a terminal such as a personal computer, the created table 111 is transmitted to the mobile phone 1 via the Internet or the like, and the mobile phone 1 is transmitted using the transmitted table 111. It is good also as a structure by which a thing left behind warning process is performed.

(3) In the above embodiment, the forgotten object warning process is executed with the RFID tag 2 designated on the designation screen 6 as a monitoring target. However, a file specifying the RFID tag 2 to be monitored is created in advance using a terminal such as a mobile phone 1 or a personal computer, and the file to be monitored is read out by a predetermined operation to be monitored in the lost-item warning process. Tag 2 may be set.

(4) In the above embodiment, the warning is performed on the condition that the response signal from the RFID tag 2 to be monitored cannot be obtained three times in succession. However, instead of this condition, a warning may be issued on the condition that a response signal from the RFID tag 2 to be monitored cannot be obtained for a predetermined number of times set once, twice, or four times or more. Good.

(5) In the above embodiment, even if a response signal from the RFID tag 2 to be monitored cannot be obtained three times in succession, no warning is given if a call is in progress. However, whether or not a warning is possible during a call may be changed by setting. If the warning during the call is permitted, the process of step S210 is omitted. Further, in the process of step S210, it is not assumed that a warning is given on the condition that a call is in progress, but that an e-mail is being created, transmitted / received, or another application is being executed, etc. The warning may not be performed on the condition.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Mobile phone, 2 ... RFID tag, 10 ... Main control part, 11 ... Memory, 12 ... Display, 13 ... Input part, 16 ... Reader unit, 160 ... Reader control part, 161 ... Transmission part, 162 ... RFID antenna 163: Reception unit, 164: AGC circuit, 101: Selection unit, 102 ... Registration unit, 103 ... Designation unit, 104 ... Notification unit, 105 ... Timer, 111 ... Registration tag table, 112 ... Designation tag table

Claims (6)

Transmitting means for wirelessly transmitting an inquiry signal for the wireless tag at a predetermined interval;
Receiving means for receiving a response signal wirelessly transmitted from the wireless tag in response to an inquiry signal wirelessly transmitted from the transmission means;
A notifying means for notifying that a response signal from a predesignated wireless tag is not received by the receiving means for a predetermined time; and
A wireless communication apparatus comprising: Storage means in which one or more wireless tags are registered;
Designation means for accepting designation of an arbitrary wireless tag from among the wireless tags registered in the storage means;
Further comprising
2. The wireless communication apparatus according to claim 1, wherein the notifying means notifies that in response to a response signal from the wireless tag specified by the specifying means not being received by the receiving means for a predetermined time. . A selection unit that selects one of a registration process of a wireless tag and a notification process by the notification unit;
When the registration process is selected by the selection means, a registration means for registering the wireless tag in which the response signal is received by the reception means in the storage means;
Further comprising
The notification means notifies the fact that a response signal from the wireless tag designated by the designation means is not received by the reception means for a predetermined time when the notification processing is selected by the selection means. The wireless communication apparatus according to claim 2.   The informing means informs that when a plurality of wireless tags are designated, if at least one of the designated wireless tags does not receive a response signal for a predetermined time by the receiving means. The wireless communication apparatus according to any one of claims 1 to 3.   The wireless communication apparatus according to claim 1, wherein the notification unit does not perform notification while a predetermined process is being executed by the wireless communication apparatus. A computer comprising: transmission means for wirelessly transmitting an inquiry signal for a wireless tag at predetermined intervals; and reception means for receiving a response signal wirelessly transmitted from the wireless tag for an inquiry signal wirelessly transmitted from the transmission means. ,
A control program for realizing a notification function for notifying that a response signal from a wireless tag specified in advance is not received by the receiving unit for a predetermined time.

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