JP5963108B2 - Systems and tools - Google Patents

Description

The present invention relates to systems and tools .

  Smart key systems are widely used in automobile vehicles. In the smart key system, for example, a request signal is transmitted from the in-vehicle device when an occupant contacts the door handle, etc., and an authentication process is executed on the in-vehicle device side for the signal returned from the electronic key that received the request signal. If the key is authenticated, door unlocking is permitted (executed).

  In the smart key system, communication failure occurs due to the influence of jamming waves and illegal radio waves, and the smart key system may not operate normally. Japanese Patent Application Laid-Open No. 2004-228561 discloses a technique for performing wireless communication on a channel that is not affected by noise among a plurality of channels between a vehicle and a portable device in a smart key system or a wireless keyless system.

JP 2009-239710 A

  For example, when a smart key system is inoperable and a request for inspection is received from a user, the cause of the inoperability cannot be reliably grasped at present, and an in-vehicle ECU (Electronic Control Unit) or electronic key May be replaced by mistake. Therefore, it is highly desirable to establish a method for identifying the cause of malfunction.

  The cause of malfunction is, for example, communication failure due to interference waves, illegal radio waves, etc. in the communication band between the in-vehicle communication device and the electronic key. It is useful information if it is known whether the communication is poor in the band) or in the communication (frequency band) from the key to the vehicle. However, in the prior art, there is no method or equipment for obtaining such information.

Therefore, in view of the above, the problem to be solved by the present invention is to provide a system and a tool having a function for identifying the cause of malfunction of the smart key system.

In order to achieve the above object, a system according to the present invention provides:
A nonvolatile storage unit, is wirelessly transmitted from the vehicle, a signal for requesting the transmission of the signals used for the portable device authentication first receiving a request signal is a signal including information corresponding to the current date and time The information corresponding to the current date and time included in the request signal received by the first receiving means, the storage control means for storing the information in the nonvolatile storage section, and the storage control means stored in the nonvolatile storage section. and a first output means for outputting a first signal including information corresponding to a time outside of the portable device currently a mobile machine having a
Creation means for creating a request signal, transmission means provided in the vehicle for wirelessly transmitting the request signal created by the creation means, and portable device provided in the vehicle for receiving the request signal transmitted by the transmission means A second receiving means for receiving a signal used for authentication of the portable device sent back wirelessly, an authentication means for executing an authentication process for the portable device using the signal received by the second receiving means, and authentication When the processing confirms that the portable device is an authorized portable device of the vehicle, the permission means for permitting a predetermined operation on the vehicle and the date and time when the transmission means transmits the request signal wirelessly provided in the vehicle are stored. a storage unit, a second output unit for outputting a second signal to the outside of the vehicle including the corresponding information to the date and time sent the stored request signal to the storage means, a communication device provided with,
Corresponding to the current date and time included in the first signal received by the third receiving means, the third receiving means for receiving the first signal output by the first output means, the second signal output by the second output means, First display means for displaying the current date and time based on information, and second display means for displaying the date and time based on information corresponding to the date and time when the request signal included in the second signal received by the third receiving means is transmitted A tool comprising
It is characterized by providing. Thereby, the information on the transmission date and time, which is useful information for identifying the communication failure, can be stored on the portable device side.

The block diagram in one Example of the communication system of this invention. The flowchart which shows the example of the process sequence by the side of the vehicle in a smart key system. The flowchart which shows the example of the process procedure by the side of the key in a smart key system. The figure which shows the example of the log | history of the reception date memorize | stored in a key. The figure which shows the structural example of the system which acquires transmission date and reception date. The flowchart which shows the example of the process sequence by the side of a tool at the time of acquiring a transmission date. The flowchart which shows the example of the process sequence by the side of the vehicle at the time of acquiring a transmission date. The flowchart which shows the example of the process sequence by the side of a tool at the time of acquiring a reception date. The flowchart which shows the example of the process procedure by the side of the key at the time of acquiring a reception date.

  Embodiments of the present invention will be described below with reference to the drawings. First, FIG. 1 is a schematic diagram of an apparatus configuration in an embodiment of a vehicle communication system 1 (hereinafter, system) according to the present invention. The system 1 includes a vehicle 2 and an electronic key 3 (key, portable device).

  The vehicle 2 includes an ECU 4 (Electronic Control Unit, electronic control unit, communication device) that controls the smart entry system. The ECU 4 has the same structure as a known computer and controls the LF transmitter 40 and the RF receiver 41. The ECU 4 includes a nonvolatile memory 42. The memory 42 stores data and programs related to the processing of this system. Further, the memory 42 also stores a conversion routine 43 related to the authentication of the key 3, a transmission date / time 44 from the LF transmission unit 40, and an encryption routine 45 for encrypting the transmission date / time (described later).

  The LF transmitter 40 transmits a radio signal in the LF (long wave) band. The RF receiver 41 receives an RF (radio frequency) signal. The LF transmitter 40 includes an antenna for each transmission area (an antenna for the vehicle interior, an antenna for the vehicle exterior, more specifically, an antenna for each door of the vehicle 2 and a trunk (outside of the back door) antenna), and a transmission assigned to each antenna. The LF signal may be transmitted within the range.

  The vehicle 2 further includes a door 50 as a configuration related to the present system, and the door 50 includes a door lock mechanism 51, a lock button 52, and a touch sensor 53. The door is locked (locked) or unlocked (unlocked) by the door lock mechanism 51.

  The lock button 52 is a button for locking the door in the smart key system, and is provided near the door handle. When the door is unlocked and the user presses and authentication is successful, the door is locked. Button. The touch sensor 53 is provided for unlocking the door in the smart key system, and the door is unlocked when the user touches the door while the door is locked and the authentication is successful.

  The door 50 refers to a plurality of doors (driver's seat side door, passenger seat side door, rear seat right side, left side door, etc.) equipped on the vehicle 2, and each of the doors has a door lock mechanism 51 and a lock button. 52 and the touch sensor 53 may be provided.

  The vehicle 2 further includes an engine switch 60 as a configuration related to the present system. The engine switch 60 is provided for starting the engine 61 (or motor, drive unit of the vehicle 2) by the smart key system. For example, when vehicle interior authentication is successful by user operation, for example, ignition on, accessory on, ignition off, etc. The three states are switched. In the present system, the drive unit of the vehicle 2 is not limited in any way, and may be, for example, an internal combustion engine (engine), an electric motor (motor), or a combination thereof.

  Next, the key 3 is an electronic key related to the smart key system, which can be carried by the user, and includes an LF receiver 30, an RF transmitter 31, a controller 32, and a memory 33.

  The LF receiver 30 receives the request signal transmitted from the LF transmitter 40 of the vehicle 2. Upon receiving the request signal, the RF transmission unit 31 transmits a signal necessary for the vehicle to authenticate the key 3 as an RF signal. The control unit 32 has a structure similar to that of a known computer, controls the above-described units mounted on the key 3, and manages various information processing necessary for the key 3. The memory 33 is a nonvolatile storage unit (for example, an EEPROM) that stores data, programs, and the like necessary for information processing in the control unit 32. In this embodiment, the memory 33 stores a conversion routine 34 related to the authentication of the key 3 and a random number 35 included in the request signal transmitted from the vehicle 2 (details will be described later).

  This system includes a smart key system as a wireless communication system using the electronic key 3.

  In the conventional smart key system, for example, when the touch sensor 53 detects a user's contact, a request signal (an LF wave requesting a response of a signal necessary for key authentication from the LF transmitter 40 to the key 3 outside the vehicle compartment) Request signal). A predetermined plurality of digits (bits) in the request signal includes a random number for key authentication. When the key 3 receives the request signal, the key 3 extracts a random number in the request signal and converts the random number into another data by a conversion routine 34 specific to the key.

  The key 3 returns the converted data as an RF wave signal from the RF transmitter 31. The ECU 4 determines whether or not the signal received by the RF receiver 41 is converted by the regular key 3, and determines that the authentication is successful if the signal is converted by the regular key 3. If the vehicle door is locked and the authentication is successful, the door lock mechanism 51 of the door is unlocked.

  If a user operation (pressing) on the lock button is detected when the vehicle door is unlocked, a request signal is transmitted from the vehicle 2 in the same manner as described above. Similarly, the key 3 also extracts a random number, converts it, and sends it back. If the vehicle side determines that the authentication is successful, the door 50 is locked.

  Further, when an operation on the engine switch 60 by the user is detected, a request signal is transmitted from the vehicle 2 as described above. Similarly, the key 3 also extracts a random number, converts it, and sends it back. When it is determined that the authentication is successful on the vehicle side, switching of ignition on, accessory on, and ignition off is permitted in accordance with a user operation.

  Under the configuration of FIG. 1, the system 1 executes processing related to the smart key system, and also executes processing related to identification of communication failure in the smart key system in the series of processing. FIG. 2 shows an example of processing on the vehicle 2 side in the smart key system. The processing procedure of FIG. 2 may be programmed in advance and stored in, for example, the memory 42 and automatically called by the ECU 4 and executed.

  In the process of FIG. 2, first, in S10, the ECU 4 determines whether or not a user operation related to the smart key system is detected. Specific examples of the corresponding user operation include contact with the touch sensor 53 (that is, a command for unlocking the vehicle door), depression of the lock button 52 (that is, a command for locking the vehicle door), and operation of the engine switch 60 (drive of the vehicle). Part start command). When a user operation is detected (S10: YES), the process proceeds to S20. When an operation is not detected (S10: NO), S10 is repeated to wait for a user operation.

  After proceeding to S20, the ECU 4 acquires the current date and time. Specifically, the ECU 4 is provided with a timer function, and the current date and time may be acquired from the ECU 4, or another equipment (another ECU) of the vehicle 2 may be provided with a timer and the current date and time may be obtained through in-vehicle communication. You may get it.

  Subsequently, in S30, the ECU 4 stores the current date and time acquired in S20 in the memory 42. As will be described later, since the LF signal transmission is performed immediately after in S50, this current date and time is regarded as the same as the transmission date and time in S50. That is, in S30, the transmission date and time of the LF signal in the smart key system is stored on the vehicle 2 side. By repeating the storage process at S30 for each user operation at S10, the history of transmission date and time is stored in the memory. The memory 42 may store, for example, a history of transmission (reception) dates and times within a predetermined period up to the present (or in a past predetermined number of transmissions).

  Subsequently, in S40, the ECU 4 encrypts the information of the current date and time acquired in S20 and stored in S30. In this encryption process, the ECU 4 calls the encryption routine 45 stored in the memory 42, and executes the encryption using it. By the calculation by the encryption routine 45, the data of the current date and time is converted into another data. The encryption in S40 may use a known encryption method.

  Subsequently, in S50, the ECU 4 creates a request signal (request signal) partially including data obtained as a result of the encryption in S40. The request signal is a signal that requests the key 3 to transmit a signal necessary for key authentication in the smart key system. In S40, at least a part of the request signal (predetermined plural digits (bits)) is converted into data obtained as a result of the encryption in S40.

  As described above, in the conventional smart key system, there is a case where a random number is included in a part of the request signal and the random number is used for key authentication. In this embodiment, the random number part in the request signal in the prior art is used. Is replaced with data obtained as a result of encryption. Thus, the present invention can be realized without significantly changing the prior art. In this embodiment, the data obtained as a result of the encryption in S40 by taking over the conventional designation is called a random number.

  Subsequently, in S60, the ECU 4 transmits the request signal created in S50 from the LF transmitter 40 as an LF signal. After the process of S60, the ECU 4 waits for a reply from the key 3. In S70, the ECU 4 determines whether or not the RF receiver 41 has received any RF signal. If an RF signal is received (S70: YES), the process proceeds to S80, and if not received (S70: NO), S70 is repeated to wait for reception.

  After proceeding to S80, the ECU 4 executes an authentication process for determining whether the key is a proper key using the RF signal confirmed to be received in S70, and determines whether the authentication is successful. When the authentication is successful (S80: YES), the process proceeds to S90, and when the authentication is unsuccessful (S80: NO), the process of FIG.

  As will be described later, the key 3 that has received the request signal transmitted in S60 performs a conversion process specific to the key 3 on the random number in the request signal, and then returns it to the vehicle. The ECU 4 of the vehicle 2 stores the same conversion routine 43 as the conversion routine 34 of the regular key 3 of the vehicle 2. Therefore, in the authentication process in S80, for example, the converted data performed by the regular key 3 for the random number in the request signal transmitted in S60 is calculated using the conversion routine 43 and received in S70. What is necessary is just to discriminate | determine whether data match.

  After proceeding to S90, the ECU 4 executes an operation related to the smart key system. Specifically, when the operation detected in S10 is contact with the touch sensor 53, the door 50 is unlocked, and when the operation detected in S10 is pressing the lock button 52, the door 50 is locked, and detected in S10. When the operated operation is an operation of the engine switch 60, the ignition (on / off) of the engine (motor) 61 or the accessory switch is turned on. The above is the processing procedure of FIG. The processing in FIG. 2 may be repeatedly executed at a predetermined cycle, for example.

  If the user makes contact with the door handle detected multiple times in S10, a large number of transmission dates and times at the same time are stored in S30, but this is obviously an unnecessary storage process. Since it is not desirable from the viewpoint of capacity, it is sufficient to store only one transmission date and time for a plurality of transmissions within a predetermined period in S30.

  Next, FIG. 3 shows a processing procedure on the key 3 side in the smart key system according to the present invention. The processing procedure of FIG. 3 may be programmed in advance and stored in the memory 32, for example, and the control unit 32 may automatically call and execute the processing procedure.

  In the process of FIG. 3, first, in S100, the control unit 32 of the key 3 determines whether or not the request signal transmitted in S50 described above has been received. When the request signal is received (S100: YES), the process proceeds to S110, and when the request signal is not received (S100: NO), S100 is repeated to wait for reception.

  After proceeding to S110, the control unit 32 extracts the random number 35 from the request signal confirmed to be received in S100 and stores it in the memory 33. As described above, the random number 35 transmitted from the vehicle 2 in S50 includes the transmission date and time information in an encrypted form. Therefore, by the process of S110, the transmission date / time of the signal received by the key 3 among the request signals transmitted from the vehicle 2 is considered to be the same as the reception date / time since transmission to reception is instantaneous. It will be memorized.

  Note that a history of the transmission date / time (reception date / time) of the signal received by the key 3 may be created in the memory 33 of the key 3 by the storage process of S110. That is, not only the transmission date and time (reception date and time) in this reception, but also the transmission date and time (reception date and time) until a predetermined number of past receptions are stored. Specific examples thereof will be described later.

  Subsequently, in S120, the control unit 32 performs a conversion process on the random numbers extracted in S110. Specifically, the random number is converted into another data using the conversion routine 34 stored in the memory 33. The conversion routine 34 is a unique routine for each key 3. As a result, it is possible to execute authentication as to whether the key is a proper key on the vehicle side that has received the converted data.

  Subsequently, in S130, the ECU 4 transmits the data created by the conversion process in S120 from the RF transmission unit 31 as an RF signal. The signal transmitted in S130 is received in S70 described above and used for authentication processing on the vehicle 2 side. The above is the processing procedure of FIG.

  An example of random numbers in the processing of FIGS. 2 and 3 will be described with reference to FIG. FIG. 4 shows an example where the current date and time acquired in S20 is 13:15 on January 1, for example. In step S40, encryption is performed on 01011315 obtained by simply converting the data into data. In this example, it is converted to AB12D778 (hexadecimal number). This AB12D778 is an example of a random number in the above description.

  This AB12D778 is incorporated in a predetermined digit in the entire request signal in S50, and transmitted to the key 3 in S60. If there is no communication failure and this request signal is received by the key 3, a random number (AB12D778 in the above example) is extracted from the received request signal and stored in the nonvolatile memory 33 in S110. In the example of FIG. 4, the history of random numbers received in the memory 33 is stored for the past three received times. FIG. 4 is merely an example, and the history of random numbers stored on the key 3 side may be set for any number of times in the past.

  As described above, in the processing of FIGS. 2 and 3, information corresponding to the transmission date / time (reception date / time) of the signal received on the key 3 side among the request signals transmitted from the vehicle 2 side is stored on the key 3 side. The Therefore, information regarding communication failure between the key 3 and the vehicle 2 can be stored in the key 3. Examples of processing relating to communication failure identification using this information are shown in FIGS.

  In the above embodiment, when storing information corresponding to the date and time received on the key 3 side, the key 3 can be stored without a timer. Therefore, the present invention does not complicate the equipment and can be realized mainly by only changing the software. The key 3 simply stores the received random number as it is, so that simple processing is sufficient.

  Next, in the present invention, the transmission date and time information stored on the vehicle 2 side by the processing of FIGS. 2 and 3 and the random number information stored on the key 3 side (that is, the LF signal received on the key 3 side) (Send date information) is acquired and checked. By comparing the two pieces of information, it can be confirmed which date / time transmission from the vehicle is received or not received by the key 3 side.

  In the example described below, it is assumed that the user has noticed the malfunction of the smart key system and has requested a dealer or the like for inspection. In this example, information stored in the vehicle 2 or the key 3 is taken out by a dealer or factory and displayed on a predetermined display unit.

  An example of the system configuration is shown in FIG. In the configuration of FIG. 5, information is acquired from the vehicle 2 and the key 3 and displayed using the tool 7 (dealer tool, factory tool). The tool 7 includes a CPU 70, a memory 71, a display unit 72, and a communication unit 73.

  The CPU 70 governs overall information processing in the tool 7. The memory 71 includes a RAM as a work area of the CPU 71 and a non-volatile storage unit that stores data and programs required for information processing by the tool 7. The display unit 72 is formed of, for example, a liquid crystal display, and displays display contents received from the CPU 70.

  The communication unit 73 has a function of wireless communication (transmission and reception) between the tool 7 and the outside thereof. The memory 71 stores an encryption routine 71a. This encryption routine 71 a is the same as the encryption routine 45 stored in the vehicle 2.

  In the configuration of FIG. 5, the vehicle 2, the key 3, and the tool 7 communicate with each other wirelessly. However, the present invention is not limited to this, and for example, communication with the vehicle 2 is connected to a predetermined connection terminal of the vehicle 2. Wired communication may be used. Although the display unit 7 of the tool 7 is used in FIG. 5, another display device and the tool 7 may be connected and displayed on the display device. 6 shows a processing procedure on the tool 7 side, and FIG. 7 shows a processing procedure on the vehicle 2 side corresponding to FIG. FIG. 8 shows a processing procedure on the tool 7 side, and FIG. 9 shows a processing procedure on the key 3 side corresponding to FIG.

  In the processing procedure of FIG. 6, first, in S <b> 200, the CPU 70 sends a command signal (hereinafter referred to as command signal 1) that instructs the tool 7 to wirelessly transmit the transmission date and time stored in the memory 42 toward the vehicle 2. Send using. Subsequently, in S <b> 210, the CPU 70 receives the transmission date and time returned from the vehicle 2 by the communication unit 73. In S220, the CPU 70 displays the transmission date and time acquired in S210 on the display unit 73. The above is the processing procedure of FIG.

  Next, in the processing procedure of FIG. 7, the ECU 4 of the vehicle 2 first receives the command signal 1 transmitted from the tool 7 in S200 in S300. Subsequently, in S <b> 310, the ECU 4 transmits the transmission date / time (history) 44 stored in the memory 42 using, for example, the LF transmission unit 40. Through the processes in FIGS. 6 and 7, the history of the transmission date and time stored in the vehicle 2 is sent to the tool 7 and displayed.

  Next, in the processing procedure of FIG. 8, first, in S <b> 400, the CPU 70 sends a command signal (hereinafter referred to as command signal 2) for instructing to wirelessly transmit the random number (history) 35 stored in the memory 33 to the tool 7. 3 using the communication unit 73. Subsequently, in S410, the CPU 70 receives the random number 35 returned from the key 3 by the communication unit 73. In step S420, the CPU 70 executes a decoding process on the random number 44 acquired in step S410. In this decryption processing, processing reverse to the encryption is performed using the encryption routine 71a.

  Since the encryption routine 71a and the encryption routine 45 are the same as described above, the decryption process decrypts the date / time data before encryption in S40 (that is, the date / time data acquired in S20). In S430, the CPU 70 displays the information on the transmission date and time of the signal received by the key 3 obtained in the decryption process in S410 on the display unit 73. The above is the processing procedure of FIG.

  Next, in the processing procedure of FIG. 9, first, in S500, the control unit 32 of the key 3 receives the command signal 2 transmitted from the tool 7 in S400 described above, for example, by the LF receiving unit 30. In response to this command signal 2, the control unit 32 transmits the random number 35 stored in the memory 33 in subsequent S 510 using, for example, the RF transmission unit 31. 8 and 9, the history of the reception date and time stored in the key 3 (the transmission date and time of the signal received by the key 3 among the request signals transmitted from the vehicle 2) is sent to the tool 7. Displayed.

  6 to 9, the history of the transmission date / time of the request signal transmitted from the vehicle 2 and the history of the reception date / time of the request signal received by the key 3 are displayed on the display unit 72 (for example, in parallel). Or individually). By comparing them, it is possible to make a determination regarding poor communication between the vehicle 2 and the key 3.

  For example, if there is a date / time not stored in the key 3 in the history of transmission date / time from the vehicle 2 side (if another date / time is stored), one possibility is a communication function between the vehicle and the key. Is not defective, and it is presumed that there was a communication failure due to jamming radio waves in the frequency band (LF band) in which communication from the vehicle 2 to the key 3 was made at that date and time. Also, for example, when all the transmission date / time histories from the vehicle 2 side are also stored in the key 3, the communication from the vehicle 2 to the key 3 was normal, but one possibility is that the key 3 to the vehicle 2 It is presumed that there was a communication failure in the frequency band in which communication is performed.

  In addition, information on time zones in which frequent communication failures occur may be obtained. That is, in the history of the transmission date and time from the vehicle 2 side, if the date and time not stored in the key 3 are concentrated in a certain time zone, communication from the vehicle 2 to the key 3 is performed in that time zone. It is estimated that communication failure is likely to occur in the frequency band (LF band). In addition, when the history of the transmission date / time from the vehicle 2 side is also stored in the key 3 and the user has stored the time zone when the smart key system has failed, the key 3 It is estimated that communication failure is likely to occur in a frequency band in which communication with the vehicle 2 is performed.

  As described above, in brief, in the present invention, output means for outputting information corresponding to the current date and time stored in the nonvolatile storage unit by the storage control means to the portable device. May be provided. Thereby, since the transmission date and time memorize | stored in the portable apparatus can be output and confirmed outside a portable apparatus, the process regarding identification of a communication failure can be performed, for example.

  In addition, the output unit may include a wireless output unit that wirelessly outputs information corresponding to the current date and time using a wireless transmission unit used to transmit a signal used for authentication of the portable device. Good. Thereby, the transmission date and time memorize | stored in the portable device can be output to the exterior of a portable device using the equipment of the wireless communication already equipped with the portable device, and can be confirmed.

  In addition, the communication device of the present invention creates a request signal for requesting the portable device to transmit a signal used for authentication of the portable device as information including information corresponding to the current date and time. Provided, the transmission means for wirelessly transmitting the request signal created by the creation means, and the vehicle, which is wirelessly returned from the portable device that has received the request signal transmitted by the transmission means, Receiving means for receiving a signal used for authentication of the portable device, authentication means for executing authentication processing of the portable device using the signal received by the receiving means, and the portable device by the authentication processing of the vehicle If the mobile device is authenticated as a legitimate portable device, it may be provided with permission means for permitting a predetermined operation on the vehicle. Thereby, in wireless communication with the portable device related to the authentication of the portable device, information corresponding to the current date and time is transmitted from the communication device side of the vehicle. Can be obtained on the mobile device side.

  In addition, the vehicle may include a storage unit that stores the date and time when the transmission unit transmits the request signal wirelessly. Thereby, since the transmission date is memorize | stored by the vehicle side, it can be used, for example for identification of a communication failure.

  The above embodiments may be appropriately changed within the scope of the gist of the claims. For example, the process of encrypting the current date data into a random number may be omitted. The electronic key may be a dedicated electronic key, but may be any portable communication device (for example, a mobile phone) in which the function of the electronic key is installed as software.

  Further, an embodiment in which the process of storing the transmission date and time on the vehicle 2 side may be omitted (in this case, the processes in FIGS. 6 and 7 are also omitted). In this embodiment, the configuration is simpler and it may be possible to identify a communication failure. That is, for example, when the user asks the user to check the malfunction of the smart key system, if the date and time of the malfunction stored by the user is not stored in the key 3, the communication from the vehicle to the key is performed at that date and time. It can be inferred that it was defective.

1 Communication System 2 Vehicle 3 Electronic Key (Portable Machine)
4 ECU (communication device)

Claims (3)

A non-volatile storage unit (33);
First receiving means (S100) for receiving a request signal that is a signal that is transmitted wirelessly from a vehicle and that is a signal that requests transmission of a signal that is used for authentication of a portable device and that includes information corresponding to the current date and time;
Storage control means (S110) for storing information corresponding to the current date and time included in the request signal received by the first reception means in the nonvolatile storage unit;
First output means (S510) for outputting a first signal including information corresponding to the current date and time stored in the nonvolatile storage unit by the storage control means to the outside of the portable device;
Said portable device comprising:
Creating means (S50) for creating the request signal;
A transmission means (40, S60) provided in the vehicle for wirelessly transmitting the request signal created by the creation means;
Second receiving means (41) provided in the vehicle for receiving a signal used for authentication of the portable device, which is wirelessly returned from the portable device which has received the request signal transmitted by the transmitting means. , S70)
Authentication means (4, S80) for executing authentication processing of the portable device using a signal received by the second receiving means;
When the portable device is authenticated by the authentication process as a regular portable device of the vehicle, permission means (S90) for allowing a predetermined operation on the vehicle;
A storage unit (42, S30) that is provided in the vehicle and stores the date and time when the transmission unit wirelessly transmits the request signal;
Second output means for outputting a second signal including information corresponding to the date and time when the request signal stored in the storage means is transmitted to the outside of the vehicle;
A communication device comprising:
Third receiving means for receiving the first signal output by the first output means and the second signal output by the second output means;
First display means for displaying the current date and time based on information corresponding to the current date and time included in the first signal received by the third receiving means;
Second display means for displaying the date and time based on information corresponding to the date and time when the request signal included in the second signal received by the third receiving means is transmitted;
A tool comprising
A system comprising: It said first output means, using said radio transmission unit used for transmitting a signal used for authentication of the portable device, the wireless output means for outputting information corresponding to the current date by radio (S510) The system of claim 1 comprising: A non-volatile storage unit (33);
First receiving means (S100) for receiving a request signal that is a signal that is transmitted wirelessly from a vehicle and that is a signal that requests transmission of a signal that is used for authentication of a portable device and that includes information corresponding to the current date and time;
Storage control means (S110) for storing information corresponding to the current date and time included in the request signal received by the first reception means in the nonvolatile storage unit;
First output means (S510) for outputting a first signal including information corresponding to the current date and time stored in the nonvolatile storage unit by the storage control means to the outside of the portable device;
Wherein the first signal is outputted from the portable device equipped with,
Creating means (S50) for creating the request signal;
A transmission means (40, S60) provided in the vehicle for wirelessly transmitting the request signal created by the creation means;
Second receiving means (41) provided in the vehicle for receiving a signal used for authentication of the portable device, which is wirelessly returned from the portable device which has received the request signal transmitted by the transmitting means. , S70)
Authentication means (4, S80) for executing authentication processing of the portable device using a signal received by the second receiving means;
When the portable device is authenticated by the authentication process as a regular portable device of the vehicle, permission means (S90) for allowing a predetermined operation on the vehicle;
A storage unit (42, S30) that is provided in the vehicle and stores the date and time when the transmission unit wirelessly transmits the request signal;
Second output means for outputting a second signal including information corresponding to the date and time when the request signal stored in the storage means is transmitted to the outside of the vehicle;
A tool for outputting the second signal from a communication device comprising:
Third receiving means for receiving the first signal output by the first output means and the second signal output by the second output means;
First display means for displaying the current date and time based on information corresponding to the current date and time included in the first signal received by the third receiving means;
Second display means for displaying the date and time based on information corresponding to the date and time when the request signal included in the second signal received by the third receiving means is transmitted;
A tool characterized by comprising.

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