JP2009130622A - Information processor, radio device, setting change method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information processor capable of properly processing notifying output by the information processor with a portable radio device using a radio authentication function. <P>SOLUTION: The information processor 21 can communicate between a plurality of radio devices 11 which can perform a predetermined authentication processing. The information processor 21 includes: a radio part 201 which transmits, to the other radio device, a switch signal for switching the radio device performing the predetermined authentication processing to the other radio device; and a drive control part 40 which changes the setting of the information processor 21 based on the destination of transmission of the switch signal. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an information processing device capable of communicating with a plurality of wireless devices capable of performing predetermined authentication processing, a wireless device capable of performing predetermined authentication processing, a method for changing settings of the information processing device, and a program.

  In recent years, when it is determined that the reception intensity of a radio wave received from a wireless key, which is an example of a wireless device, is equal to or higher than a predetermined value, and authentication with the wireless key is successful based on a signal transmitted / received using the wireless communication An information processing apparatus having a wireless authentication function that unlocks when the reception strength of radio waves received from the wireless key is less than a predetermined value or when it is determined that the authentication with the wireless key has failed It has been proposed (for example, Patent Document 1). Examples of information processing devices that have been put to practical use include automobiles that perform wireless authentication with a wireless key to lock or unlock a door key, or reject or allow reception with an operation key by performing wireless authentication with a wireless key. Mobile phone, etc.

JP 2004-143806 A

  Since the wireless key is basically carried by the user when going out, the wireless authentication with the information processing apparatus is basically successful. However, for example, when the user goes home, the wireless key is always carried by the user. However, wireless authentication with the information processing apparatus may fail. In addition, if the wireless key is left in the bag or wallet, the information processing apparatus and the wireless key are separated from each other, and wireless authentication between the information processing apparatus and the wireless key may fail. . Further, it is troublesome to manually change the setting of the information processing apparatus or cancel the function each time depending on the location in order to avoid the above-described failure of the wireless authentication.

  The present invention has been made in view of the above circumstances, and an information processing device, a wireless device, and a setting capable of improving user convenience when performing wireless authentication between the wireless device and the information processing device. It is an object to provide a change method and a program.

  In order to achieve the above object, a first information processing apparatus according to the present invention is an information processing apparatus capable of communicating with a plurality of wireless devices capable of performing a predetermined authentication process, wherein the predetermined authentication process is performed. A transmission unit that transmits a switching signal for switching the wireless device that performs the switching to another wireless device, and a setting change unit that changes the setting of the information processing device based on the transmission destination of the switching signal It has composition which has.

  With this configuration, it is possible to improve user convenience when performing wireless authentication between the wireless device and the information processing device.

  Further, the second information processing apparatus of the present invention is configured to include a notification unit that notifies that the switching signal is transmitted when the transmission unit transmits the switching signal.

  With this configuration, the user can recognize that the switching signal is transmitted and the wireless device that performs the predetermined authentication process is changed by the information processing device, and the convenience of the user is improved.

  In the third information processing apparatus of the present invention, the plurality of wireless devices include an installed wireless device installed at a predetermined position and a portable portable wireless device.

  With this configuration, for example, a predetermined authentication process is performed with an installed wireless device indoors where an installed wireless device (master key) is installed, and a predetermined authentication process is performed with a portable wireless device outdoors. It is possible to ensure high safety and improve user convenience.

  According to a fourth information processing apparatus of the present invention, there is provided a receiving unit that receives a search signal indicating a response from the installed wireless device to a search request signal for searching for the wireless device, and the search signal by the receiving unit. A reception level measurement unit that measures the reception level of the wireless device that performs the predetermined authentication process from the portable wireless device to the installed wireless when the transmission unit is higher than the predetermined level. The switching signal for switching to the device is transmitted.

  With this configuration, for example, when moving from an outdoor location to an indoor location where an installed wireless device is installed, authentication with the installed wireless device is automatically performed when the signal reception level from the installed wireless device exceeds a predetermined level. It is possible to switch to processing, and convenience for the user is improved.

  According to a fifth information processing apparatus of the present invention, an installation search signal indicating a response from the installation radio apparatus to a search request signal for searching for the radio apparatus and a mobile search signal indicating a response from the portable radio apparatus. And a reception level measuring unit for measuring a reception level indicating the reception level of the installation search signal by the reception unit and a mobile reception level indicating the reception level of the mobile search signal, and When the installation reception level is lower than a predetermined level and the portable reception level is higher than the predetermined level, the transmission unit transmits a wireless device that performs the predetermined authentication process from the installation wireless device to the portable wireless device. The switching signal for switching to is transmitted.

  With this configuration, for example, when moving from the indoor where the installed wireless device is installed to the outdoors, the reception level of the signal from the installed wireless device is below a predetermined level, and the reception level of the signal from the portable wireless device is the above predetermined level. When it becomes above, it can switch to an authentication process with a portable radio | wireless apparatus automatically, and a user's convenience improves.

  The first wireless device of the present invention is a wireless device capable of performing a predetermined authentication process, wherein the wireless device that performs the predetermined authentication process with an information processing device is transferred from another wireless device to the wireless device. A receiving unit that receives a switching signal for switching to a device and a notification unit that notifies that the switching signal has been received when the switching unit receives the switching signal.

  With this configuration, it is possible to improve user convenience when performing wireless authentication between the wireless device and the information processing device.

  The first setting change method of the present invention is a setting change method for the information processing apparatus in the case where communication is performed between a plurality of wireless apparatuses capable of performing predetermined authentication processing and the information processing apparatus. Transmitting a switching signal for switching the wireless device that performs the predetermined authentication process with the information processing device to another wireless device from the information processing device to the other wireless device; and transmission of the switching signal And changing the setting of the information processing apparatus based on the above.

  With this method, it is possible to improve user convenience when performing wireless authentication between the wireless device and the information processing device.

  The first program of the present invention is a program for causing a computer to execute each step of the setting changing method.

  This program can improve user convenience when wireless authentication is performed between the wireless device and the information processing device.

  ADVANTAGE OF THE INVENTION According to this invention, when performing wireless authentication between a radio | wireless apparatus and information processing apparatus, it is possible to improve a user's convenience.

  Hereinafter, an information processing device, a wireless device, a setting change method, and a program according to an embodiment of the present invention will be described in detail.

  In the information processing apparatus according to the embodiment of the present invention, at least a part of the functions of the information processing apparatus is restricted from the viewpoint of improving security. Between the wireless device and the information processing device according to the embodiment of the present invention, a predetermined authentication process is performed by a communication authentication sequence described later in order to release this restriction. The communication authentication sequence includes a search mode for searching for a wireless device for performing a predetermined authentication process as a communication mode between the wireless device and the information processing device, and between the searched wireless device and the information processing device. There is an authentication mode for performing predetermined authentication processing and releasing the function restriction of the information processing apparatus.

  As a wireless device according to an embodiment of the present invention, there are a portable wireless device carried by a user and an installed wireless device disposed at a predetermined position indoors, for example. There may be a plurality of portable wireless devices and installed wireless devices.

[Positional relationship between wireless device and information processing device]
FIG. 5 is a diagram illustrating an example of a positional relationship between the wireless device and the information processing device according to the embodiment of this invention. In FIG. 5, it is assumed that the user uses the information processing apparatus 21 indoors. The installed wireless device 11B (corresponding to the master key 11B in FIG. 5) is disposed at a predetermined indoor position. In many cases, the user does not carry the portable wireless device 11A (corresponding to the sub-key 11A in FIG. 5) indoors. Even in this case, if the authentication process with the installed wireless apparatus 11B is successful when a predetermined condition is satisfied and the use authority is given, the function restriction of the information processing apparatus 21 can be released.

  FIG. 6 is a diagram illustrating an example of a positional relationship between the wireless device and the information processing device according to the embodiment of this invention. In FIG. 6, it is assumed that the user uses the information processing apparatus outdoors. The installed wireless device 11B (corresponding to the master key 11B in FIG. 6) is disposed at a predetermined position indoors. In many outdoors, the user carries the portable wireless device 11A (corresponding to the sub-key 11A in FIG. 6). Further, authentication processing cannot be performed with the installed wireless device 11B. Even in this case, if the authentication process with the portable wireless device 11A is successful when a predetermined condition is satisfied and the use authority is given, the function restriction of the information processing device 21 can be released.

  When the user carries the information processing device 21 and moves from the outdoor to the indoor or from the outdoor to the indoor, the information processing device 21 performs an authentication process from the portable wireless device 11A to the installed wireless device 11B. The communication partner of the authentication process may be switched from the installed wireless device B to the portable wireless device 11A. Such switching is performed by a communication authentication sequence described later.

  In the following description, when only the wireless device 11 is described, the description is common to the portable wireless device 11A and the installed wireless device 11B.

[Wireless authentication sequence between wireless device and information processing device]
Next, processing by the wireless device and the information processing device that has not started wireless authentication and a series of processing by the wireless device and information processing device that starts wireless authentication with the counterpart device and continues wireless authentication will be described.

  FIG. 1 shows a sequence in the search mode by the radio apparatus and the information processing apparatus according to the embodiment of the present invention. FIG. 1 shows an example in which the search for the portable wireless device 11A is successful first, and then the search for the installed wireless device 11B is successful.

  The portable wireless device 11A (subkey in FIG. 1) and the installed wireless device 11B (master KEY in FIG. 1), which are examples of the wireless device 11, repeat the carrier sense of the search channel at a certain period T (the portable wireless device 11A and the installed wireless device 11A). (The wireless device 11B performs carrier sense of the search channel at the time indicated by “◯” in FIG. 1).

  On the other hand, the information processing device 21 transmits a search request signal at least for a period equal to or longer than the carrier sense cycle T of the wireless device 11 (when the width of the thick arrow indicating the search request signal in FIG. Correspondence). The information processing device 21 transmits the search request signal for a period equal to or longer than the carrier sense T of the wireless device 11 so that the wireless device 11 can receive the search request signal. If the information processing device 21 transmits the search request signal a predetermined number of times without receiving the search signal transmitted from the wireless device 11, the information processing device 21 stops transmitting the search request signal or transmits the search request signal. The information processing apparatus 21 may be configured to save power by increasing the period for performing the process.

  When the mobile wireless device 11 </ b> A receives a search request signal from the information processing device 21 that is in the wireless communication range during carrier sense execution, the mobile wireless device 11 </ b> A transmits the search signal to the information processing device 21. Then, the information processing device 21 receives the search signal and transmits a search response to the portable wireless device 11A.

  11 A of portable radio | wireless apparatuses which received the search response transmit the key ID signal containing the identification code which identifies an own machine (mobile radio | wireless apparatus 11A) to the information processing apparatus 21. FIG. The information processing apparatus 21 that has received the key ID signal receives the identification code included in the key ID signal and the identification code stored in advance as data in the own apparatus (information processing apparatus 21). Is the identification code of the portable wireless device 11A that is paired with the information processing device 21), and if it matches, the own device (information processing device 21) is identified. The terminal ID signal including the identification code to be transmitted is transmitted to the portable radio apparatus 11A. Note that the portable wireless device 11A and the information processing device 21 perform pairing processing to exchange each other's identification code before starting wireless authentication, and pair the identification code of the own device with the identification code of the counterpart device. Registered as a thing.

  11 A of portable radio | wireless apparatuses which received the terminal ID signal perform transmission / reception of the signal using a challenge and response system between the information processing apparatuses 21 after that. That is, the mobile wireless device 11 </ b> A that has received the terminal ID signal transmits a challenge request signal to the information processing device 21. The information processing apparatus 21 that has received the challenge request signal transmits a challenge signal generated by generating a random number to the portable radio apparatus 11A, and encrypts the challenge signal by an encryption process common to the portable radio apparatus 11A. Store the digitized signal. 11 A of portable radio | wireless apparatuses which received the challenge signal transmit the response signal produced | generated by performing an encryption process common to the information processing apparatus 21 with respect to this challenge signal to the information processing apparatus 21. FIG. The information processing apparatus 21 that has received the response signal compares and compares the response signal with the encrypted signal stored when the challenge signal is transmitted to the portable radio apparatus 11A. If these signals match, the information processing device 21 determines that the authentication with the portable wireless device 11A is successful, and transmits an ACK signal notifying that the authentication is successful to the portable wireless device 11A. The portable wireless device 11A receives the ACK signal.

  In the sequence described above, the period from when the information processing device 21 starts transmitting the search request signal to when the portable wireless device 11A receives the ACK signal is the sub-key communication mode (the information processing device 21 and the portable wireless device 11A). The communication period between the information processing apparatus 21 and the mobile radio apparatus 11A receives the terminal ID signal after the information processing apparatus 21 starts transmitting the search request signal. During the period when the communication mode is the search mode, the subkey communication mode is the initial (pre) authentication mode during the period from when the portable radio apparatus 11A transmits the challenge request signal to when the portable radio apparatus 11A receives the ACK signal. Sometimes referred to as the period.) In addition, after transmitting or receiving the ACK signal, the information processing device 21 and the portable wireless device 11A transition the sub-KEY communication mode to an authentication mode described later.

  Even if the sub-KEY communication mode transitions to the authentication mode, the information processing apparatus 21 continues to transmit a search request signal to the wireless apparatus 11 at a certain cycle. In addition, the mobile wireless device 11A periodically repeats the carrier sense of the search channel. When receiving the search request signal from the information processing device 21, the portable wireless device 11 </ b> A transmits an ACK signal indicating a response to the search request signal to the information processing device 21.

  On the other hand, even if the sub-KEY communication mode transitions to the authentication mode, the installed wireless device 11B periodically repeats the carrier sense of the search channel, similarly to the portable wireless device 11A. The installed wireless device 11 </ b> B transmits a search signal to the information processing device 21 when receiving the search request signal from the information processing device 21. Then, the information processing device 21 receives the search signal. Then, the information processing apparatus 21 determines whether the reception level of the search signal is equal to or higher than a predetermined level. When the information processing device 21 determines that the reception level of the search signal is equal to or higher than the predetermined level, the information processing device 21 transmits a search response to the installation wireless device 11B. As shown in FIG. 1, the information processing apparatus 21 may receive an ACK signal from the portable radio apparatus 11A for the search request signal and a search signal from the installed radio apparatus 11B for the search request signal in a short period of time. However, by referring to the transmission source of the ACK signal and the search signal, it can be identified that the signal is from the installed wireless device 11B. This transmission source information may be an identification code, or other identification information indicating the transmission source may be included in the message.

  The installed wireless device 11B that has received the search response transmits a key ID signal including an identification code for identifying the own device (installed wireless device 11B) to the information processing device 21. The information processing apparatus 21 that has received the key ID signal receives the identification code included in the key ID signal and the identification code stored in advance as data in the own apparatus (information processing apparatus 21). Is the identification code of the installed wireless device 11B that is paired with the information processing device 21.) If the two match, the own device (information processing device 21) is identified. The terminal ID signal including the identification code to be transmitted is transmitted to the installed radio apparatus 11B. The installed wireless device 11B and the information processing device 21 perform pairing processing to exchange each other's identification code before starting the wireless authentication, and pair the identification code of the own device with the identification code of the counterpart device. Registered as a thing.

  The installed wireless device 11B that has received the terminal ID signal thereafter transmits / receives a signal to / from the information processing device 21 using a challenge and response method. That is, the installed wireless device 11 </ b> B that has received the terminal ID signal transmits a challenge request signal to the information processing device 21. The information processing device 21 that has received the challenge request signal transmits a challenge signal generated by generating a random number to the installed wireless device 11B, and encrypts the challenge signal by an encryption process common to the installed wireless device 11B. Store the digitized signal. The installed wireless device 11B that has received the challenge signal transmits to the information processing device 21 a response signal generated by performing an encryption process common to the information processing device 21 on the challenge signal. The information processing apparatus 21 that has received the response signal compares and compares the response signal with the encrypted signal stored when the challenge signal is transmitted to the installed wireless apparatus 11B. If these signals match, the information processing device 21 determines that the authentication with the installed wireless device 11B is successful, and transmits an ACK signal notifying that the authentication is successful to the installed wireless device 11B. The installed wireless device 11B receives the ACK signal.

  In the sequence described above, the period from when the information processing device 21 starts transmitting the search request signal to when the installed wireless device 11B receives the ACK signal is the master KEY communication mode (the information processing device 21 and the installed wireless device). The communication mode between the apparatuses 11B) is referred to as a period during which the search mode is set (note that the period from when the information processing apparatus 21 starts transmitting the search request signal to when the installed wireless apparatus 11B receives the terminal ID signal is a master. During the period in which the KEY communication mode is the search mode, the period from the time when the installed wireless device 11B transmits the challenge request signal to the time when the installed wireless device 11B receives the ACK signal is the initial (pre) authentication mode of the master KEY communication mode. Are sometimes referred to as periods of time). In addition, after transmitting or receiving the ACK signal, the information processing device 21 and the installed wireless device 11B transition the master KEY communication mode to an authentication mode described later.

  When the communication mode of the master KEY transitions to the authentication mode by transmitting an ACK signal, the information processing device 21 transmits a switching signal for switching the communication mode of the sub KEY from the authentication mode to the search mode to the portable wireless device 11A. . The switching signal includes a power saving signal for saving power of the portable wireless device 11A. The portable wireless device 11A receives the switching signal, switches the sub-KEY communication mode to the search mode, and saves power. In power saving, for example, the carrier sense interval of the portable radio apparatus 11A is increased. Further, by setting the operation state of the CPU to the low power consumption mode, unnecessary power consumption is suppressed and the battery life is extended.

  By the way, the information processing device 21 transmits and receives various signals shown in the above-described sequence, and measures the reception intensity of some signals (or all signals) among the various signals received from the wireless device 11. Alternatively, the reception strength is notified from the wireless device 11 that measures the reception strength of the signal received from the information processing device 21.

  If the information processing device 21 that has received the response signal determines that the authentication with the wireless device 11 has been successful, and if the received intensity of the signal measured or notified before receiving the response signal is less than a predetermined value, Although the ACK signal is transmitted to the wireless device 11 and the mode is changed to the authentication mode, the restriction on at least a part of the functions provided in the information processing device 21 is continued. On the other hand, if the received strength of the signal measured or notified before receiving the response signal is equal to or greater than a predetermined value, the information processing device 21 transmits an ACK signal to the wireless device 11 and transitions to the authentication mode. The restriction on at least a part of the functions provided in the information processing apparatus 21 is released.

  Note that FIG. 1 illustrates an example in which the portable wireless device 11A first enters the authentication mode and the installed wireless device 11B later enters the authentication mode. However, when the installed wireless device 11B first enters the authentication mode, the installed wireless device 11B first enters the authentication mode. Search signal and search response signal transmission / reception processing between the device 11B and the information processing device 21 is the same as search signal and search response signal transmission / reception processing between the portable wireless device 11A and the information processing device 21.

  Next, a sequence when the communication mode of the master key is the authentication mode will be described. 2 and 3 show a sequence when the communication mode of the master KEY by the wireless device and the information processing device according to the embodiment of the present invention is the authentication mode. The installed wireless device 11B and the information processing device 21 start timing from the time when the installed wireless device 11B transmits a response signal to the information processing device 21 in order to synchronize with the counterpart device. Assume that the device 21 starts timing from the time when the response signal is received from the installed wireless device 11B. In addition, although it demonstrated that the installation radio | wireless apparatus 11B and the information processing apparatus 21 started time counting from the time of transmitting and receiving a response signal, you may use another signal for a synchronizing signal. In addition, the information processing device 21 corrects the timekeeping time in accordance with the frame synchronization of various signals received from the installed wireless device 11B.

  The installed wireless device 11B repeats the carrier sense of the authentication channel and the search channel at a cycle of 2T after the start of time measurement in order to receive the signal transmitted from the information processing device 21. The information processing apparatus 21 in which the communication mode of the master KEY has changed to the authentication mode is set to an arbitrary period of 2T from the time when the installation wireless apparatus 11B synchronizes with the timing of carrier sensing of the authentication channel and the search channel. At this time, the search request signal is transmitted to the portable radio apparatus 11A and the installation radio apparatus 11B. The operation of the wireless device 11 after receiving this search request signal will be described later. Note that this search request signal can be transmitted for a predetermined period to such an extent that the portable wireless device 11A can receive when the carrier sense interval is increased.

  In addition, the installed radio apparatus 11B may perform carrier sense of the search channel at a period of T after starting the timing. The carrier sense of the search channel by the installed wireless device 11B is information processing in which a plurality of information processing devices set as a pair with the installed wireless device 11 are registered in the installed wireless device 11B and no wireless authentication is performed. When there is a device, it is performed in order to receive a signal transmitted from an information processing device that is not performing wireless authentication. The installed wireless device 11B may overlap the timing for performing carrier sense for the authentication channel and the timing for performing carrier sense for the search channel. In such a case, the carrier sense for the authentication channel is performed first. This corresponds to the processing of performing carrier sense of the search channel when radio waves from the information processing apparatus cannot be detected.

  In the information processing device 21 and the installed wireless device 11B, the search request carrier and the ACK signal indicating a response to the search request signal are detected in the carrier sense of the search channel, and the challenge signal and the response signal are detected in the carrier sense of the authentication channel. Detected.

  When the time 2T elapses after the response signal immediately before the master KEY communication mode transitions to the authentication mode, the information processing device 21 generates a challenge signal generated by generating a random number up to that point. While transmitting to the installation radio | wireless apparatus 11B, the challenge signal and the encryption signal which encrypted the challenge signal by the encryption process common to the portable radio | wireless apparatus 11 are memorize | stored. The installed wireless device 11B that has received the challenge signal stores the challenge signal and a response signal generated by performing an encryption process in common with the information processing device 21 on the challenge signal, and stores the response signal. It transmits to the information processing device 21. The information processing apparatus 21 that has received the response signal compares and compares the response signal with the encrypted signal stored when the challenge signal is transmitted to the installed wireless apparatus 11B. If the signals match, the information processing device 21 determines that the authentication with the installed wireless device 11B is successful. The information processing apparatus 11 transmits a challenge signal every time 16T elapses from the transmission of the previous challenge signal to the installation wireless apparatus 11B (excluding retransmission described later) in order to periodically authenticate. .

  When the information processing device 21 determines that the authentication with the installed wireless device 11B has failed (not succeeded), when the time 2T elapses from the transmission of the challenge signal, the information processing device 21 transmits the challenge signal to the installed wireless device. Retransmit to 11B. If the authentication fails even in the comparison and collation based on the response signal to the retransmitted challenge signal, the challenge signal is retransmitted to the installed radio apparatus 11B when the time 2T elapses from the transmission of the retransmitted challenge signal. If the authentication with the installed wireless device 11B fails for a predetermined number of times or more, the information processing device 21 can change the communication mode of the master key from the authentication mode to the search mode.

  Here, although not shown, when the communication mode of the master KEY is the authentication mode, a specific case where the information processing device 21 fails to authenticate with the installed wireless device 11B (for example, when a response signal cannot be received). The sequence will be described. Here, the predetermined number of times is three.

  The information processing device 21 transmits a challenge signal at a cycle of 16T, but if it cannot receive a response signal from the installed wireless device 11B for the challenge signal, the same challenge signal is transmitted 2T after the challenge signal is transmitted. resend. If the information processing device 21 can receive a response signal from the portable wireless device 11 with respect to the challenge signal retransmission 1, the challenge signal (excluding retransmission) is transmitted to the installed wireless device 11B when 16T elapses. The signal is transmitted to the installed wireless device 11B.

  On the other hand, if the information processing apparatus 21 cannot receive the response signal from the installed wireless apparatus 11B for the challenge signal after transmitting the challenge signal retransmission 1, the information processing apparatus 21 receives the same challenge signal 2T after the time when the challenge signal retransmission 1 is transmitted. resend. If the information processing apparatus 21 can receive a response signal from the installed wireless apparatus 11B in response to the challenge signal retransmission 2, when 16T has elapsed since the previous challenge signal (excluding retransmission) was transmitted to the portable wireless apparatus 11. The challenge signal is transmitted to the installed wireless device 11B.

  Furthermore, after transmitting the challenge signal, after transmitting the challenge signal retransmission 1 and after transmitting the challenge signal retransmission 2, the information processing device 21 responds to any challenge signal from the installed wireless device 11B. Cannot be received, transmission of the search request signal is started, and the communication mode of the master key shifts to the search mode. Then, the information processing device 21 adds a restriction on at least a part of the functions provided in the information processing device 21, or continues the restriction if the restriction is already applied. On the other hand, the installed wireless device 11B has passed 4T from the time when it should receive a challenge signal (excluding retransmission) from the information processing device 21 (that is, the time elapsed for the information processing device 21 to transmit a series of three challenge signals). Then, the carrier sense of the authentication channel for the information processing apparatus 21 at 2T intervals is stopped, and only the carrier sense of the search channel is performed at the same time. Here, the sequence in which the information processing apparatus 21 transmits the retransmission of the challenge signal twice at maximum has been described, but the number of retransmissions may be any number (no retransmission may be performed).

  The installed wireless device 11B may receive the challenge signal from the information processing device 21, but the information processing device 21 may not receive the response signal transmitted from the installed wireless device 11B. If the installed wireless device 11B receives the challenge signal retransmission 1 and the retransmission 2 from the information processing device 21 after transmitting the response signal, the installed wireless device 11B retransmits the response signal.

  The information processing apparatus 21 that has transmitted the challenge signal (including retransmission) then measures the reception strength of the response signal received from the installation radio apparatus 11B, or measures the reception intensity of the signal received from the information processing apparatus 21. The reception intensity is notified from the apparatus 11B using a response signal. If the information processing apparatus 21 that has received the response signal determines that the authentication with the installed wireless apparatus 11B has been successful, and if the received intensity of the signal measured or notified from the response signal is less than a predetermined value, the authentication mode However, the restriction on at least a part of the functions provided in the information processing apparatus 21 is continued. On the other hand, if the received intensity of the signal measured or notified from the response signal is equal to or higher than a predetermined value, the information processing apparatus 21 maintains the authentication mode and restricts at least a part of the functions provided in the information processing apparatus 21. To release.

  For example, when the challenge signal and the response signal are 8-byte signals, the challenge signal may be divided into eight 1-byte units, and 1-byte challenge signal and response signal may be transmitted / received in sequence every time 16T.

  Further, the information processing apparatus 21 may comprehensively determine whether the reception intensity is greater than or less than a predetermined value based on the reception intensity of a plurality of signals measured or notified at each time 16T. In addition, when the information processing apparatus 21 has a function of measuring the reception intensity of the response signal and a function of acquiring the reception intensity using the response signal from the portable wireless apparatus 11, You may make it determine whether the large (or small) received intensity obtained from the function is more than or less than a predetermined value.

  By the way, when the mobile radio apparatus 11A receives a search request signal when the communication mode of the master key is the authentication mode, the mobile radio apparatus 11A transmits a search signal to the information processing apparatus 21. In addition, when the installation radio apparatus 11B receives a search request signal when the communication mode of the master key is the authentication mode, the installation radio apparatus 11B transmits an ACK signal indicating a response to the search request signal to the information processing apparatus 21. These search request signal and ACK signal include information indicating a transmission source and a transmission destination. Note that when the communication mode of the master KEY is the authentication mode, the sub KEY communication mode is basically the search mode.

  When the information processing apparatus 21 receives the search signal from the portable radio apparatus 11A and the ACK signal from the installation radio apparatus 11B, the information processing apparatus 21 determines the reception level for each signal. When the reception level of the ACK signal is equal to or higher than the predetermined level, or when the reception level of the search signal is equal to or lower than the predetermined level, the information processing apparatus 21 continues to set the communication mode of the master KEY as shown in FIG. Processing in the authentication mode is continued as the authentication mode.

  Similarly, as described above, when the information processing apparatus 21 has not failed to authenticate with the installed wireless apparatus 11B a predetermined number of times or more, or when the reception level of the search signal is equal to or lower than the predetermined level. As shown in FIG. 2, the processing in the authentication mode is continued with the communication mode of the master key as the authentication mode.

  On the other hand, when the reception level of the ACK signal is equal to or lower than the predetermined level and the reception level of the search signal is equal to or higher than the predetermined level, the information processing apparatus 21 performs a search response to the search signal as shown in FIG. Is transmitted to the portable radio apparatus 11A.

  Similarly, as described above, when the information processing apparatus 21 fails to authenticate with the installed wireless apparatus 11B for a predetermined number of times or more, and the reception level of the search signal is equal to or higher than the predetermined level, the information processing apparatus 21 As shown in FIG. 3, a search response to the search signal is transmitted to the portable radio apparatus 11A.

  When receiving the search response, the portable wireless device 11A cancels the power saving state. For example, the carrier sense interval is returned to the normal state. After the search response is received by the portable wireless device 11A, the key ID signal, the terminal ID signal, the challenge request signal, the challenge signal, the response signal, and the ACK signal are transmitted and received between the information processing device 21 and the portable wireless device 11A. Is done. The method for transmitting and receiving these signals is the same as the method described for transmitting and receiving the ACK signal from the search response described in FIG.

  When the sub-KEY communication mode transitions to the authentication mode by transmitting an ACK signal, the information processing device 21 transmits a switching signal for switching the master KEY communication mode from the authentication mode to the search mode to the installed wireless device 11B. . The installed wireless device 11B receives the switching signal and switches the communication mode of the master key to the search mode.

  In addition, when the time 2T has elapsed since the information processing device 21 received the response signal immediately before the communication mode of the master key changes to the authentication mode, the challenge generated by generating a random number up to that point As described above, the signal is transmitted to the installed wireless device 11B. Similarly, when the time 2T elapses after receiving the response signal immediately before the sub-KEY communication mode transitions to the authentication mode, A challenge signal generated by generating a random number up to the time is transmitted to the portable radio apparatus 11A.

  Regarding the transmission / reception processing (including retransmission) of the challenge signal and the request signal of the information processing device 21 and the portable wireless device 11A when the communication mode of the sub KEY is the authentication mode (including FIG. 1), the communication mode of the master KEY Is the same as the transmission / reception processing (including retransmission) of the challenge signal and the request signal of the information processing device 21 and the installed wireless device 11B in the case of the authentication mode.

  By the way, the information processing apparatus 21 depends on which wireless device 11 the above-described switching signal is sent to (the portable wireless device 11A or the installed wireless device 11B), that is, according to the transmission destination of the switching signal. Change various settings. The various settings include various settings for the information processing apparatus 21 such as a screen saver, wallpaper, standby screen, ringtone, manner mode, usage authority, and other settings. In addition, although not shown, various setting changes are not made until the reception intensity of the response signal from the wireless apparatus 11 becomes equal to or higher than a predetermined value after the switching signal is transmitted (that is, the function restriction of the information processing apparatus 21 is released). At any timing.

  In addition, the switching signal can include a signal for requesting notification to a wireless device 11 (not shown) provided with a notification function. In this notification, for example, an LED provided on the wireless device 11 is turned on, a voice or music is output from a speaker provided on the wireless device 11, or a character string or an image is displayed on a display unit provided on the wireless device 11. Or is displayed. Therefore, the wireless device 11 that has received the switching signal can notify that the switching signal has been received by various methods. Thereby, the user can confirm the timing when the search mode and the authentication mode are switched in each mode by the wireless device 11.

  Further, when transmitting the above switching signal to the wireless device 11, the information processing device 21 provided with the notification function may notify that the switching signal is transmitted. Thereby, the user can confirm the timing at which the search mode and the authentication mode are switched in each mode by the information processing apparatus 21.

[Configuration of Wireless Device and Information Processing Device According to Embodiment of Present Invention]
Next, configurations of the portable wireless device and the information processing device according to the embodiment of the present invention will be described. FIG. 4 shows a functional block diagram of the portable radio apparatus and the information processing apparatus according to the embodiment of the present invention. The wireless device 11 according to the embodiment of the present invention includes a wireless authentication unit 10 and various interfaces 104. The information processing apparatus 21 according to the embodiment of the present invention includes a wireless authentication unit 20, a drive unit 30, a drive control unit 40, a display 50, an operation unit 60, and a notification unit 70. The wireless authentication unit 10 includes a wireless unit 101, a timer 102, and a wireless control unit 103. The wireless authentication unit 20 includes a wireless unit 201, a timer 202, and a wireless control unit 203.

  In the wireless authentication unit 10 of the wireless device 11, the wireless unit 101 transmits a radio wave for short-distance communication or UWB (UWB) used for 400 MHz band specific low power radio, RFID (Radio Frequency Identification) via an antenna. (Ultra Wide Band) is used to transmit and receive radio waves including the identification code of the information processing device 21 set as a pair with the wireless device 11 by pairing processing.

  The wireless control unit 103 controls a signal to be transmitted / received to / from the wireless unit 101 based on a predetermined communication protocol (that is, the communication protocol described in [Wireless Authentication Sequence Between Wireless Device and Information Processing Device]). The wireless control unit 103 includes circuits such as an amplifier circuit, a modulation circuit, a demodulation circuit, an encoding circuit, and a decoding circuit. Further, the radio control unit 103 is based on the reception intensity of radio waves used in radio communication (for example, the voltage level and S / N ratio of radio waves input to the demodulation circuit, the error rate of data decoded by the decode circuit, etc.). And the received intensity is determined to be greater than or less than a preset threshold.

  The timer 102 starts timing from the time when the wireless unit 101 transmits a response signal to the information processing apparatus 21.

  The interface 104 is, for example, an operation button, and includes a device that appropriately outputs a signal input from the outside of the wireless device 11 to the wireless control unit 103.

  In the wireless authentication unit 20 of the information processing apparatus 21, the wireless unit 201 transmits a radio wave for short-range communication or UWB used for 400 MHz band specific low power radio, RFID (Radio Frequency Identification) via an antenna. (Ultra Wide Band) is used to transmit and receive radio waves including the identification code signal of the wireless device 11 set as a pair with the information processing device 21 by pairing processing. The wireless unit 201 functions as a transmission unit and a reception unit.

  The wireless control unit 203 controls a signal to be transmitted / received to / from the wireless unit 201 based on a predetermined communication protocol (that is, the communication protocol described in [Wireless authentication sequence between wireless device and information processing device]). The wireless control unit 203 includes circuits such as an amplifier circuit, a modulation circuit, a demodulation circuit, an encoding circuit, and a decoding circuit. Further, the radio control unit 203 is based on the reception intensity of radio waves used in radio communication (for example, the voltage of the radio wave level input to the demodulation circuit, the S / N ratio, the error rate of the data decoded by the decode circuit, etc.). And the received intensity is determined to be greater than or less than a preset threshold. The wireless control unit 203 outputs a use restriction request signal to the drive control unit 40 when the authentication with the wireless device 11 fails or when the reception intensity of the radio wave received from the wireless device 11 is less than a predetermined value. Further, at least a part of the functions provided in the information processing apparatus 21 is restricted. On the other hand, the wireless control unit 203 outputs a use restriction release signal to the drive control unit 40 when the authentication with the wireless device 11 is successful and the reception intensity of the radio wave received from the wireless device 11 is a predetermined value or more. Then, the restriction applied to the function provided in the information processing apparatus 21 is released. Note that the wireless control unit 203 has a function as a reception level measurement unit.

  The timer 202 starts measuring time when the wireless unit 201 receives a response signal from the wireless device 11. In addition, the timer 202 corrects the time measured according to the time of the wireless device 11 in accordance with the frame synchronization of various signals received from the wireless device 11.

  The drive control unit 40 limits the execution of the functions of the various drive units 30 that can be executed by the information processing apparatus 21 during a period when the use restriction request signal is notified from the wireless control unit 203. Further, the drive control unit 40 controls the notification output by the notification unit 70. Further, the drive control unit 40 changes various settings in the information processing apparatus 21. The drive control unit 40 has a function as a setting change unit.

  Note that a wireless key can be considered as an embodiment of the wireless device of the present invention, but the wireless key is not limited to the wireless key, and the electronic device such as a mobile phone, a PDA, or a wireless card functions as a function of the portable wireless device of the present invention. It may be in a form including.

  Further, as an embodiment of the information processing apparatus of the present invention, a PC, a mobile phone, a PDA, and other electronic devices can be considered.

  As described above, according to the wireless device and the information processing device of the embodiment of the present invention, it is possible to improve user convenience when performing wireless authentication between the wireless device and the information processing device. For example, when a user carries an information processing device, he / she carries the portable wireless device outdoors when the installed wireless device is not installed, and leaves the portable wireless device indoors where the installed wireless device is installed. Even if it is in a place, it is possible to continue communication by being located within the communicable area with the installed wireless device. In addition, in order to avoid a failure in authentication, it is not necessary to manually change the setting of the information processing apparatus or cancel the function each time depending on the location, so that convenience for the user is improved. Further, various settings (such as wallpaper and screen saver) of the information processing apparatus can be automatically changed depending on whether communication is performed with the portable wireless apparatus or the installed wireless apparatus. Furthermore, the user can recognize the switching timing by notifying the timing for switching the communication with the portable wireless device and the installed wireless device.

  According to the information processing device, the wireless device, the setting change method, and the program of the present invention, it is possible to improve user convenience when performing wireless authentication between the wireless device and the information processing device. This is effective and is useful in the fields of wireless devices and information processing devices that perform authentication using wireless communication.

Sequence when master KEY communication mode is search mode by radio apparatus and information processing apparatus of embodiment of present invention Sequence when Master KEY Communication Mode is Authentication Mode by Wireless Device and Information Processing Device of Embodiment of Present Invention Other examples of sequence when master KEY communication mode is authentication mode by wireless device and information processing device of embodiment of present invention Functional block diagram of radio apparatus and information processing apparatus according to an embodiment of the present invention The figure which shows the positional relationship of the radio | wireless apparatus and information processing apparatus of embodiment of this invention Other examples of a diagram showing a positional relationship between a wireless device and an information processing device according to an embodiment of the present invention

Explanation of symbols

11 wireless device 11A portable wireless device 11B installed wireless device 10 wireless authentication unit 101 wireless unit 102 timer 103 wireless control unit 104 interface 21 information processing device 20 wireless authentication unit 201 wireless unit 202 timer 203 wireless control unit 30 drive unit 40 drive control unit 50 Display 60 Operation unit 70 Notification unit

Claims (8)

An information processing device capable of communicating with a plurality of wireless devices capable of performing a predetermined authentication process,
A transmission unit that transmits a switching signal for switching the wireless device that performs the predetermined authentication process to another wireless device; and
An information processing apparatus comprising: a setting changing unit that changes the setting of the information processing apparatus based on a transmission destination of the switching signal. The information processing apparatus according to claim 1, further comprising:
An information processing apparatus comprising: a notification unit that notifies that the switching signal is transmitted when the transmission unit transmits the switching signal. The information processing apparatus according to claim 1, wherein:
The information processing apparatus, wherein the plurality of wireless devices include an installed wireless device installed at a predetermined position and a portable portable wireless device. The information processing apparatus according to claim 3, further comprising:
A receiver for receiving a search signal indicating a response from the installed wireless device to a search request signal for searching for the wireless device;
A reception level measurement unit for measuring a reception level of the search signal by the reception unit;
Have
The information processing apparatus that transmits the switching signal for switching the wireless device that performs the predetermined authentication process from the portable wireless device to the installed wireless device when the reception level is higher than a predetermined level. The information processing apparatus according to claim 3, further comprising:
A receiver for receiving an installation search signal indicating a response from the installation radio apparatus to a search request signal for searching for the radio apparatus and a mobile search signal indicating a response from the portable radio apparatus;
A reception level measuring unit for measuring an installation reception level indicating a reception level of the installation search signal by the reception unit and a mobile reception level indicating a reception level of the mobile search signal;
Have
When the installation reception level is lower than a predetermined level and the portable reception level is higher than the predetermined level, the transmission unit transmits a wireless device that performs the predetermined authentication process from the installation wireless device to the portable radio. An information processing apparatus that transmits the switching signal for switching to an apparatus. A wireless device capable of performing a predetermined authentication process,
A receiving unit that receives a switching signal for switching the wireless device that performs the predetermined authentication process with the information processing device from another wireless device to the wireless device;
And a notification unit that notifies that the switching signal has been received when the receiving unit receives the switching signal. A method for changing the setting of the information processing apparatus when communication is performed between a plurality of wireless apparatuses capable of performing predetermined authentication processing and the information processing apparatus,
Transmitting a switching signal for switching a wireless device that performs the predetermined authentication process with the information processing device to another wireless device from the information processing device to the other wireless device;
Changing the setting of the information processing apparatus based on the transmission destination of the switching signal.   The program for making a computer perform each step of the setting change method of Claim 7.

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