JP4946291B2 - Communication system and program thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To impose no function restriction on equipment even if there is no other authentication equipment by stopping authenticating operation in a predetermined place. <P>SOLUTION: A first communication device 1 is provided with a fixed-position installation detecting means of detecting installation at a predetermined position. When the fixed-position installation detecting means detects installation at the predetermined position, functions of equipment are not restricted and the fist communication device 1 transmits a transmission stop request signal 305 to a second communication device 2, so that the transmission of an authentication signal 303 from the second communication device 2 to the first communication device 1 is stopped. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention confirms the existence of each other by performing radio transmission / reception periodically or irregularly between radio transceivers, and when the distance between the radio transceivers exceeds a predetermined communication range, The present invention relates to a communication system and its program used for limiting functions or generating alarms.

  In recent years, security systems have been put into practical use in which operation locks of devices such as mobile phones or personal computers are wirelessly controlled in consideration of security.

  As one form of such a security system, in order to prevent the theft of a mobile phone, a user of the mobile phone possesses an identification signal transmitter in the form of a card, and a predetermined identification from the identification signal transmitter to the mobile phone. There is one that transmits a code at a predetermined timing, confirms the identification code with a mobile phone, and enables the use of the mobile phone when the reception level is above a certain level (see, for example, Patent Document 1).

In Patent Document 1 of such a wireless communication system, in a first communication device mounted on the main body side of a device such as a mobile phone, a signal periodically emitted from a second communication device as an identification signal transmitter is detected. The operation is continuously performed.
Japanese Patent Laid-Open No. 11-88499

  However, in the system of Patent Document 1, authentication communication is performed even in places where there is no fear of theft, such as at home or work, so always keep the second communication device close to the first communication device. In addition, wireless communication is performed and power is wasted.

  In addition, even when processing such as transmitting a transmission stop request signal is performed before the first communication device mounted on the device is turned off, the user must perform an operation to turn off the device.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a communication system that stops an authentication operation at a predetermined location and a program therefor.

  The first communication device is provided with fixed position installation detection means for detecting installation at a predetermined position, and when the installation at the predetermined position is detected by the fixed position installation detection means, the function of the device is limited. Without transmitting, the transmission stop request signal is transmitted from the first communication device to the second communication device to stop the transmission of the authentication signal from the second communication device to the first communication device.

  As a result, it is detected that the device has been installed on the installation table and the authentication communication is stopped. Therefore, wireless communication for authentication is not performed while the device is installed on the installation table, and wireless communication is wasted. This eliminates radio wave interference and further reduces power consumption.

According to the present invention, it is possible to stop the authentication operation at a predetermined place so that the function of the device is not restricted even if there is no other authentication device. Furthermore, a communication system that reduces power consumption can be provided.

  The first invention comprises a first communication device connected to a device, and a second communication device that performs wireless communication with the first communication device, and the first communication device and the second communication device. In a communication system for limiting the function of the device according to a communication state with a communication device, an authentication signal is transmitted from the second communication device to the first communication device, and the first communication device When the authentication signal is received from the second communication device, authentication communication is performed by returning an authentication response to the second communication device, and the device to which the first communication device is connected according to a communication state The first communicator is provided with a fixed position installation detecting means for detecting installation at a predetermined position, and the fixed position setting detecting means moves the predetermined position to the predetermined position. When installation is detected, the function of the device is not limited, It is intended to stop the transmission of the authentication signal to the from the second communication device by sending a transmission stop request signal wherein from one communication device to the second communication device a first communication device.

  As a result, it is detected that the device has been installed on the installation table and the authentication communication is stopped. Therefore, wireless communication for authentication is not performed while the device is installed on the installation table, and wireless communication is wasted. This eliminates radio wave interference and further reduces power consumption.

  According to a second aspect of the present invention, the fixed position installation detecting means in the first aspect of the invention includes an RF tag, and the RF tag is operated by a radio wave from an RF tag reader / writer provided at the predetermined position. By transmitting the ID of the first communication device to the tag reader / writer and receiving a signal from the RF tag reader / writer, it is detected that the device is placed at a predetermined position.

  As a result, it is detected by the RF tag communication that the device is installed on the installation table by the fixed position detection means, and the authentication communication is stopped. Therefore, while the device is installed on the installation table, wireless communication for authentication is performed. Communication is not performed and wireless communication is not wasted. Further, since the fixed position detecting means is constituted by the RF tag, it is possible to suppress power consumption during normal time without supplying power.

  According to a third invention, the fixed position installation detecting means in the first invention comprises an RF tag reader, the RF tag reader operates the RF tag provided at the predetermined position by radio waves, and the RF tag reader By receiving the ID indicating the predetermined position from the RF tag, it is detected that the terminal is placed at the predetermined position.

  As a result, the RF tag reader detects that the device is installed on the installation table by the fixed position detecting means and stops the authentication communication. Therefore, wireless communication for authentication is performed while the device is installed on the installation table. It is not performed and wireless communication is not wasted. In addition, since the fixed position detecting means is constituted by an RF tag reader, various functional restrictions can be changed depending on the ID received from the place where it is installed.

  A fourth invention is a program for causing a computer to realize at least a part of the communication system according to any one of the first to third inventions. Since it is a program, at least a part of the present invention can be realized with simple hardware by cooperating hardware resources such as an electric / information device and a computer. In addition, the program can be distributed / updated and installed easily by recording on a recording medium or distributing the program using a communication line.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a block diagram of a wireless alarm device using a communication system according to the first embodiment of the present invention.

  In FIG. 1, the communication system 101 includes a first communication device 1 and a second communication device 2 connected to a device 4 via a function restriction unit 3. The first communication device 1 and the function restriction unit 3 may be mounted inside the device 4.

  The first communication device 1 controls the function restriction of the device 4 in which the first communication device 1 is mounted by notifying the function restriction means 3 of the communication result with the second communication device 2.

  With function restriction, for example, when the first communication device 1 is mounted on a mobile phone as the device 4, the key operation is prohibited, the electronic money function is prohibited, or the outgoing call is prohibited. This makes it impossible to use some or all of the functions of the mobile phone.

  FIG. 2 is a block configuration diagram of the first communication device 1. The transmission unit 21 modulates data to be transmitted and wirelessly transmits the data from the antenna 24 via the transmission / reception switching unit 23. The receiving means 22 demodulates data received from the antenna 24 by radio. The transmission / reception switching unit 23 switches the connection of the antenna 24 to the transmission unit 21 or the reception unit 22.

  The control unit 24 switches the transmission / reception switching unit 23 to the transmission side at the time of transmission, transfers transmission data to the transmission unit 21, and switches the transmission / reception switching unit 23 to the reception side at the time of reception to receive data received from the reception unit 22. . Further, the function restriction unit 3 is notified of the communication result with the second communication device 2.

  The fixed position installation detection means 26 detects the installation on the installation base 6 which is a fixed position by a signal from the external input terminal, and since this input is pulled up by the power source of the first communication device 1, Normally, a high level is input.

  The second communication device 2 is a key for performing authentication of the first communication device 1, and is small in size so that a person using the device 4 on which the first communication device 1 is mounted is always carried. In order to form a lightweight card, key ring, necklace, wristwatch, bracelet, ring, etc., it is driven by a small power source such as a battery.

  The second communication device 2 transmits to the first communication device 1, and when the first communication device 1 receives the authentication signal from the second communication device 2, it returns an authentication response to the second communication device 2. Thus, the authentication communication is periodically performed, and the function restriction control of the device 4 in which the first communication device 1 is mounted is performed according to the communication state.

  The first communication device 1 and the second communication device 2 have at least two modes, a search mode and an authentication mode, and the first communication on the device 4 side with respect to the signal from the second communication device 2 in the search mode. When a response is received from the communication device 1, the function restriction of the device is released by shifting to the authentication mode and periodically performing authentication confirmation communication, and the function of the device 4 is restricted in the search mode.

  1 will be described with reference to FIG. 3 showing a transmission / reception signal sequence.

  As shown in the transmission / reception signal sequence of FIG. 3, the search signal 307 is periodically transmitted from the second communication device 2 in the search mode. When the first communication device 1 receives the search signal 301 and confirms that it is a signal from the second communication device 1, the first communication device 1 transmits a search response 302 to the second communication device 2, and the authentication mode Migrate to

  When the second communication device 2 receives the search response 302, the second communication device 2 shifts to an authentication mode, and continues to perform authentication by periodically performing authentication confirmation communication with the first communication device 1.

  When receiving the authentication signal 303 from the second communication device 2, the first communication device 1 transmits an authentication response 304 after confirming that the communication partner ID is to be communicated.

  While the authentication signal 303 is normally exchanged in the authentication mode, the function of the device 4 on which the first communication device 1 is mounted is not limited.

  In the second communication device 2, the reception of the authentication response 304 is started. If the authentication response 304 is not received before the expiration of the predetermined response wait timer, the second communication device 2 shifts to the search mode and transmits the search signal 301.

  If the first communication device 1 does not receive the authentication signal 303 until the reception waiting timer expires, the first communication device 1 enters the reception state of the search signal 301.

  The reception waiting timer of the first communication device 1 and the response waiting timer 305 of the second communication device 2 expire at the same timing, and both the first communication device 1 and the second communication device 2 enter the search mode. Thus, transmission / reception of the search signal 301 is made possible immediately.

  The reason why the authentication signal 303 is not received before the expiration of the reception waiting timer and shifts to the search mode is that the timer is set when the distance between the first communication device 1 and the second communication device 2 is too long to receive the radio wave. However, when the mode is changed to the search mode, the function of the device 4 on which the first communication device 1 is mounted is limited. Perform operation restrictions such as inability to input, no screen display, no audio output.

  The second communication device 2 starts the search response waiting timer after transmitting the search signal 301, and transmits the search signal 301 again if no search response is received before the search response waiting timer expires.

  The reception waiting for the search signal 301 on the first communication device 1 side may wait continuously, or power consumption can be further reduced by intermittently waiting using a timer.

  Next, regarding the operation at the time of installation at a predetermined position, the configuration example (A) of the fixed position installation detection means 26 of the first communication device 1 in FIG. And a transmission / reception signal sequence diagram at the time of installation at a predetermined position in FIG.

  During normal times, the first communication device 1 and the second communication device 2 perform authentication communication by exchanging an authentication signal 303 and an authentication response 304, so that the function of the device 4 is not limited.

When returning home and installing the device 4 at a predetermined position on the installation table 6 at home, the installation detection terminal 401 and the ground terminal 402 which are contacts to the installation table 6 of the first communication device 1 are connected to the terminals of the installation table 6. Is done. Since the installation detection terminal 401 and the ground terminal 402 on the installation base 6 side are connected, the installation detection terminal 401 is connected to the ground terminal 402 connected to the ground point of the first communication device 1 and becomes a low level. .

  In the control means 25, when the signal from the fixed position detection means 26 changes from the high level to the low level, a transmission stop request signal is sent via the transmission means 21 instead of the authentication response 304 transmitted to the second communication device 2. 305 is transmitted.

  In the second communication device 2, when the transmission stop request signal 305 is received as a response to the authentication signal 303, the authentication signal 303 is not transmitted thereafter, and enters the authentication suspension state (pause mode) and enters the reception state.

  In the first communication device 1, authentication communication is not performed while the device 4 is installed at a predetermined position on the installation table 6, but the function restriction request is not sent to the function restriction unit 3, and the device 4 There are no functional restrictions.

  When the device 4 is removed from a predetermined position of the installation table 6, the installation detection terminal 401 and the ground terminal 402 of the first communication device 1 are removed from the terminals of the installation table 6. Since the installation detection terminal 401 is pulled up, it is at a high level.

  When the signal from the fixed position detection unit 26 changes from the low level to the high level, the control unit 25 transmits a transmission start signal 306 to the second communication device 2 via the transmission unit 21.

  When the second communication device 2 receives the transmission start signal 306, the second communication device 2 enters the search mode and periodically transmits the search signal 301.

  When the first communication device 1 once limits the function of the device 4 and receives the search signal 301 and confirms that the signal is from the second communication device 1, the search response 302 is sent to the second communication device 2. The function restriction of the device 4 is released by shifting to the authentication mode.

  Thereafter, the authentication signal 303 is transmitted, and the authentication communication is resumed.

  In the above description, the search mode is entered when the device 4 is removed from the predetermined position of the installation base 6. However, if each communication device enters the authentication mode by transmission and reception of the transmission start signal 306. The time required for function restriction can be eliminated by performing authentication communication that performs transmission and reception of the authentication signal 303 and the authentication response 304 by synchronizing with the transmission and reception timings of the transmission start signal 306.

  As described above, according to the present embodiment, when the device 4 is installed at a predetermined position on the installation table 6, the device 4 is installed on the installation table 6 only by the contact terminals between the fixed position detecting means 26 and the installation table 6. When the device 4 is installed on the installation base 6, the wireless communication for authentication is not performed and the wireless communication is uselessly caused to cause radio wave interference. Power consumption can be further reduced.

  In the present embodiment, the first communication device 1 enters the reception state after receiving the transmission stop request signal 305. However, if the first communication device 1 performs intermittent reception instead of the continuous reception state, the first communication device 1 is further in the reception state. Power consumption can be reduced.

Further, in the present embodiment, the mere installation base 6 has been described as a predetermined position. However, when the device 4 connected to the first communication device 1 is a device that operates using a secondary battery, FIG. 6 is connected to the power supply terminal 601 and the grounding terminal 402, which are contacts to the charging base 7 of the first communication device 1, with the charging base 7 as shown in FIG. If the installation is detected, unnecessary power consumption can be reduced by not performing authentication communication during charging.

  In addition, the detection of the connection to the charging base 7 by the fixed position installation detecting means 26 is a method for detecting a change in the voltage of the power supply terminal 601 due to the installation on the charging base 7 as shown in FIG. There is a way to do it.

(Embodiment 2)
A communication system 101 according to the second embodiment of the present invention is the same as that of the first embodiment.

  Further, the fixed position installation detection means 26 of the first communication device 1 is provided with an RF tag 71, and an RF tag reader / writer 72 that reads and rewrites data of the RF tag 71 is provided on the installation base 6 at a predetermined position. It is provided.

  Hereinafter, the operation of the present system will be described with reference to FIG. 7 showing a procedure for detecting installation on the installation base 6 which is a predetermined position.

  Since the installation base 6 is equipped with the RF tag reader / writer 72 and can communicate with the RF tag 71, the first communication device 1 and the installation base 6 do not have to be in direct contact with each other. For example, the installation base 6 may be in the form of a table, chair, shelf, etc., and the installation location of the device 4 may be any distance that allows wireless communication between the RF tag reader / writer 72 and the RF tag 71 even if a mat is laid on the table. Can be free.

  When the device 4 is installed on the installation table 6, the RF tag 71 operates by the radio wave (701) from the RF tag reader / writer 72 and transmits the ID signal (702) of the first communication device 1 to the RF tag reader / writer 72. . The ID of the first communication device 1 is an identification code that can uniquely identify the first communication device 1, and even if the information included in the authentication signal 303 used for communication with the second communication device 2 is used. Good.

  When receiving the registered ID signal (702) of the first communication device 1, the RF tag reader / writer 72 transmits a response signal (703) to the RF tag 71.

  When the RF tag 71 receives the response signal (703) from the RF tag reader / writer 72, the RF tag 71 detects that the RF tag 71 is placed at a predetermined position. Switch from low to low.

  The reception of the response signal (703) from the RF tag reader / writer 72 in the RF tag 71 is performed, for example, by rewriting a part of the data of the RF tag 71. When the data is rewritten, the control unit 25 is notified of the fixed position installation detection. Do. For example, the signal is switched from a high level to a low level.

  When the control unit 25 receives the notification of the fixed position installation detection from the fixed position detection unit 26, the transmission stop request signal 305 is transmitted via the transmission unit 21 instead of the authentication response 304 transmitted to the second communication device 2. Send.

  In the second communication device 2, when the transmission stop request signal 305 is received as a response to the authentication signal 303, the authentication signal 303 is not transmitted thereafter, and the reception state is set.

  In the first communication device 1, authentication communication is not performed while the device 4 is installed at a predetermined position on the installation table 6, but the function restriction request is not sent to the function restriction unit 3, and the device 4 There are no functional restrictions.

  When the device 4 is removed from a predetermined position of the installation base 6, the RF tag 71 does not operate because the radio wave from the RF tag reader / writer 72 becomes weak, and the fixed position installation from the fixed position detection means 26 to the control means 25 is performed. Stop notification of detection. For example, the signal is switched from a low level to a high level.

  When the signal from the fixed position detection unit 26 changes from the low level to the high level, the control unit 25 transmits a transmission start signal 306 to the second communication device 2 via the transmission unit 21.

  When receiving the transmission start signal 306, the second communication device 2 resumes the authentication communication via the search mode.

  As described above, according to the present embodiment, when the device 4 is installed at a predetermined position on the installation table 6, the RF tag 71 communicates that the device 4 has been installed on the installation table 6 by the fixed position detection means 26. And the authentication communication is stopped, so that the wireless communication for authentication is not performed while the device 4 is installed on the installation base 6, and the wireless communication is not wasted. Further, since the fixed position detecting means 26 is constituted by the RF tag 71, it is possible to suppress power consumption during normal time without supplying power.

(Embodiment 3)
A communication system 101 according to the third embodiment of the present invention is the same as that of the first embodiment.

  Further, the fixed position installation detection means 26 of the first communication device 1 is provided with an RF tag reader 81, and the installation table 6 at a predetermined position is provided with an RF tag 71.

  The operation of the present system will be described below with reference to FIG. 8 showing the procedure for detecting the installation on the installation base 6 which is a predetermined position.

  When the device 4 is installed on the installation table 6, the RF tag 71 operates by the radio wave (801) from the RF tag reader 81 and transmits the ID signal (802) of the installation table 6 that is a predetermined position to the RF tag reader 81. To do. The ID of the installation table 6 is an identification code that can uniquely identify the installation table 6.

  When the RF tag reader 81 receives the ID signal (802) of the registered installation table 6, it detects that the RF tag reader 81 has been placed at a predetermined position. Switch from high level to low level.

  When the control unit 25 receives the notification of the fixed position installation detection from the fixed position detection unit 26, the transmission stop request signal 305 is transmitted via the transmission unit 21 instead of the authentication response 304 transmitted to the second communication device 2. Send.

  In the second communication device 2, when the transmission stop request signal 305 is received as a response to the authentication signal 303, the authentication signal 303 is not transmitted thereafter, and the reception state is set.

In the first communication device 1, authentication communication is not performed while the device 4 is installed at a predetermined position on the installation table 6, but the function restriction request is not sent to the function restriction unit 3, and the device 4 There are no functional restrictions.

  The RF tag 71 continues to notify the RF tag reader 81 of the continuation of installation on the installation table 6 by transmitting the ID signal (802) of the installation table 6 to the RF tag reader 81 periodically (for example, every 10 seconds).

  The RF tag reader 81 may partially restrict the function depending on the ID of the installation base 6. For example, when the device 4 is installed as a mobile phone on the installation base 6 having Mr. A's ID, it is not possible to display Mr. A's mail screen or protected area even if the mobile phone is operated. However, other operations such as sending and receiving calls can be made unrestricted.

  When the device 4 is removed from a predetermined position of the installation table 6, the RF tag 71 does not operate because the radio wave from the RF tag reader 81 becomes weak, and the ID of the installation table 6 that the RF tag reader 81 has periodically received is received. Since the signal (802) is not received, the signal from the fixed position detecting means 26 to the control means 25 is switched from the low level to the high level.

  When the signal from the fixed position detection unit 26 changes from the low level to the high level, the control unit 25 transmits a transmission start signal 306 to the second communication device 2 via the transmission unit 21.

  When the second communication device 2 receives the transmission start signal 306, the second communication device 2 transmits an authentication signal 303 and resumes the authentication communication.

  As described above, according to the present embodiment, when the device 4 is installed at a predetermined position on the installation table 6, the RF tag reader 81 detects that the device 4 is installed on the installation table 6 by the fixed position detection means 26. Then, since the authentication communication is stopped, the wireless communication for authentication is not performed while the device 4 is installed on the installation base 6, and the wireless communication is not wasted. In addition, since the fixed position detecting means 26 is constituted by the RF tag reader 81, various function restrictions can be changed depending on the ID received from the place where it is installed.

  In the second and third embodiments, when the device 4 is installed on the installation base 6, it is not necessary to directly contact the device 4, and the RF tag may be as close as possible to the communication.

  Further, in the second and third embodiments, the installation detection on the installation table 6 is performed by the RF tag, the RF reader / writer, and the RF reader. However, near-field communication such as infrared communication or Bluetooth (registered trademark) is used. It is good also as performing installation detection by the communication means which can communicate only and can authenticate ID.

  In the second and third embodiments, the authentication communication is resumed when the device 4 is removed from a predetermined position of the installation base 6. First, the function of the device 4 is temporarily performed by the first communication device 1. When the search signal 301 is received and it is confirmed that the signal is from the second communication device 1, the search response 302 is transmitted to the second communication device 2 to shift to the authentication mode. If the function restriction of the device 4 is canceled, the synchronization for authentication communication can be reestablished by exchanging search signals in the search mode, so that the same operation timing as the authentication mode can be set from the normal search mode. it can.

Further, although the function restriction is applied according to the communication state between the first communication device 1 and the second communication device 2 in the embodiment described so far, the first communication device 1 transmits the authentication signal 303. If the reception level is confirmed and the function restriction request is made to the function restriction means 3 when the reception level is below a predetermined threshold value, the first communication device 1 and the second communication device 2 are selected by selecting the threshold value. The function restriction can be controlled at a desired distance.

  Moreover, in embodiment described so far, if the apparatus 4 is installed in predetermined positions, such as the installation stand 6 and the charging stand 7, authentication communication of the 1st communication apparatus 1 connected to the apparatus 4 will be stopped, and it will release | separate. However, when the device 4 is installed at a predetermined position, the authentication communication is stopped, and at the same time, the first communication device 1 connected to the device 4 starts a timer and a predetermined time elapses. Then, if the authentication communication is started again when the timer expires, even if the device 4 is left at a predetermined position, the authentication communication fails if the second communication device 2 is not located nearby. However, it can be prevented from being used by others. For example, if the expiration time of the timer can be changed to 8 hours from returning home to leaving the house, it can be changed according to the use.

  In addition, if the wireless communication used in the embodiments described so far is a specific low power wireless, it is possible to communicate at a distance of about one house with low power, so by adjusting the antenna and the transmission level It is relatively easy to change functions such as using functions that are restricted by a few meters, and function restrictions for each house.

  The means used in the embodiments described so far cooperate with hardware resources such as a CPU (or microcomputer), a RAM, a ROM, a storage / recording device, an electrical / information device including an I / O, a computer, a server, and the like. You may implement in the form of the program to work. In the form of a program, new functions can be easily distributed / updated and installed by recording them on a recording medium such as magnetic media or optical media or distributing them via a communication line such as the Internet.

  As described above, the present invention is intended to limit the operation of portable electronic devices such as mobile phones, cameras, video cameras, notebook computers, PDAs, and portable audio devices, and automobiles and motorcycles whose functions are to be restricted unless the owner is nearby. It is possible to provide a device that can be used for a vehicle such as a vehicle to quickly apply an alarm action and a function restriction when left misplaced or stolen, and to release the function restriction in a safe place.

The block diagram of the radio | wireless alarm apparatus using the communication system in the 1st Embodiment of this invention The block diagram of the 1st communication apparatus of the 1st Embodiment of this invention Sequence diagram of transmission / reception between the first communication device and the second communication device according to the first embodiment of this invention (A) The figure which shows the structural example of the fixed position installation detection means of the 1st communication apparatus of the 1st Embodiment of this invention (B) The figure which shows a mode at the time of a connection with an installation stand Transmission / reception signal sequence diagram when the device according to the first embodiment of the present invention is installed at a predetermined position The figure which shows the structural example of the fixed position installation detection means in the case of installing in the charging stand of the apparatus of the 1st Embodiment of this invention The figure which shows the procedure of the installation detection to the installation stand which is a predetermined position in the 2nd Embodiment of this invention. The figure which shows the procedure of the installation detection to the installation stand which is a predetermined position in the 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st communication apparatus 2 2nd communication apparatus 3 Function restriction | limiting means 4 Apparatus 6 Installation stand 7 Charging stand 71 RF tag 72 RF tag reader / writer 81 RF tag reader 101 Communication system 206 Fixed position installation detection means 303 Authentication signal 304 Authentication response 305 Transmission stop request signal 401 Installation detection terminal (contact)
402 Grounding terminal (contact)
601 Power supply terminal (contact)

Claims (4)

A communication between the first communication device and the second communication device, comprising a first communication device connected to the device and a second communication device that performs wireless communication with the first communication device. In a communication system for limiting the function of the device according to the state,
An authentication signal is transmitted from the second communication device to the first communication device, and when the first communication device receives the authentication signal from the second communication device, the first communication device transmits the authentication signal to the second communication device. An authentication communication is performed by returning an authentication response, and a function restriction control of the device to which the first communication device is connected is performed according to the communication state.
The first communication device is provided with a fixed position installation detection means for detecting installation on a charging stand for charging a secondary battery mounted on the first communication device by a change in voltage of a power supply terminal , When installation at the predetermined position is detected by the fixed position installation detection means, a transmission stop request signal is transmitted from the first communication device to the second communication device without limiting the function of the device. A communication system that stops the transmission of the authentication signal from the second communication device to the first communication device. The home position detection means includes an RF tag, and the RF tag is operated by a radio wave from the RF tag reader / writer provided at the predetermined position, and the ID of the first communication device is assigned to the RF tag reader / writer. The communication system according to claim 1, wherein the communication system detects that the signal is placed at a predetermined position by transmitting and receiving a signal from the RF tag reader / writer. The fixed position installation detecting means includes an RF tag reader, and the RF tag reader is operated at a predetermined position from the RF tag by the RF tag reader by operating an RF tag provided at the predetermined position by radio waves. 2. The communication system according to claim 1, wherein the communication system detects that the mobile phone is placed at a predetermined position by receiving an ID indicating. The program for making a computer implement | achieve at least one part of the communication system of any one of Claims 1-3.

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