JP2009071698A - Mobile phone with keyless entry function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a practicable mobile phone mounted with a keyless entry function. <P>SOLUTION: In the mobile phone having a main power supply, an auxiliary power supply for backing up a storage part is shared to supply power to a keyless entry part. When there is the possibility that the backup can not be performed if the auxiliary power supply is consumed, power is supplied from the main power supply to the keyless entry part. At this point, if the main power supply is off, the main power supply is automatically turned on, and the main power supply is automatically turned off when a keyless entry ends. If the main power supply is turned on during a normal operation of the cellular phone, or if the main power supply is charged, or if the auxiliary power supply is consumed when a keyless entry operation is performed, such a state is notified and the replacement of the auxiliary power supplies is urged. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a keyless entry device, and more particularly to a keyless entry system for a vehicle.

In recent years, keyless entry systems have become common, especially for vehicle keys, and even in the keyless entry system, entry codes can be exchanged by short-range wireless communication by holding the electronic key and approaching the vehicle without operating it. Accordingly, it has become widespread that the door can be unlocked with the electronic key in a pocket or the like. Furthermore, various proposals have been made for associating the keyless entry function with a mobile phone. For example, in Patent Document 1, the mobile phone and the vehicle-mounted device perform near field communication to lock and open the door lock mechanism. A keyless entry system for locking is disclosed. Patent Document 2 proposes a rental car system that allows a mobile phone having a keyless entry function to receive an entry code transmitted from a remote management server to unlock the mobile phone vehicle. Yes.
JP 2006-60683 A Japanese Patent Laid-Open No. 2003-58795

However, there are various problems to be examined in order to rationally install a keyless entry function in a mobile phone.

In view of the above, an object of the present invention is to provide a practical mobile phone equipped with a keyless entry function.

In order to solve the above problems, the present invention provides a telephone function unit fed from a main power source, a telephone communication unit fed from the main power source, a short-range communication unit fed from the main power source, and a power fed from the main power source. In addition, there is provided a mobile phone having a storage unit that stores data necessary for the telephone function unit, an auxiliary power source that supplies power to the storage unit, and a keyless entry unit that is supplied with power from the auxiliary power source. Although the main power supply of the mobile phone needs to be charged frequently, the above configuration eliminates the inconvenience that keyless entry cannot be performed due to the main power being consumed. In addition, since the power consumption of the keyless entry unit is small, even if the auxiliary power source provided for backing up the storage unit of the mobile phone is shared, there is little possibility of damaging the original backup function.

According to a specific feature of the present invention, the keyless entry unit includes a keyless entry code storage unit that stores a keyless entry code and a keyless entry communication unit that performs communication dedicated to the keyless entry. The power supply is also possible, and the short-range communication unit can be used for communication instead of the keyless entry communication unit. More specifically, with this configuration, when the auxiliary power supply is exhausted, the keyless entry unit communicates with the near field communication unit instead of the keyless entry communication unit. This makes it possible to perform keyless entry even if the original backup becomes impossible when the power of the auxiliary power source is consumed by the keyless entry unit any more. This is because the possibility that both the auxiliary power source and the main power source are consumed is small.

According to another specific feature of the present invention, when the auxiliary power is depleted when the main power is turned on, when the main power is charged, or when a keyless entry operation is performed. And a control unit is provided to encourage replacement of the auxiliary power supply. This prevents the situation where the auxiliary power source is consumed when keyless entry is required.

According to another specific feature of the present invention, when the keyless entry operation is performed, when the main power is off, the control unit turns on the keyless entry operation according to the keyless entry operation. This is particularly useful when the auxiliary power supply is exhausted when a keyless entry operation is performed and it is necessary to perform keyless entry with the main power supply. In addition, when the main power is turned on in response to the keyless entry operation as described above, it is reasonable to configure the main power to be turned off when the keyless entry is completed.

In the present invention, when the auxiliary power source is depleted when the main power source is turned on, this is notified, or when the auxiliary power source is depleted when the main power source is charged, this is informed. This configuration is useful even when the power of the auxiliary power source is not consumed by the keyless entry unit.

  FIG. 1 is a block diagram showing an example of a keyless entry system according to an embodiment of the present invention. The embodiment constitutes a system including a plurality of mobile phones, and FIG. 1 shows a first mobile phone 1 and a second mobile phone 2. In FIG. 1, the internal configuration of the second mobile phone 2 is illustrated in a simplified manner, but the content is basically the same as that of the first mobile phone 1. In FIG. 1, only two mobile phones are shown for simplicity, but a third and more unspecified number of mobile phones having the same configuration may be included. The keyless entry system according to the embodiment of the present invention further includes a vehicle 3 and a parking lot 4.

The first mobile phone 1 has a first mobile control unit 6 composed of a computer that controls the entire mobile phone, and controls the first telephone function unit 10 and the like according to the operation of the telephone operation unit 8. The function of the first portable control unit 6 is executed by software stored in the storage unit 12. The storage unit 12 also temporarily stores various data necessary for controlling the entire first mobile phone 1. The first portable control unit 6 further controls the display unit 14 to perform GUI display in cooperation with the operation of the telephone operation unit 8 and display the control result.

The GPS unit 16 obtains information on the latitude, longitude, and altitude, which are absolute position information of the first mobile phone 1, from the satellite or the nearest broadcasting station based on the GPS system and sends the information to the first mobile control unit 6. This absolute position information is displayed on the display unit 14 together with the map under the control of the first portable control unit 6 and provided as navigation information.

The first mobile phone 1 can perform wireless communication via a telephone line including a normal call by the first telephone function unit 10 and the first telephone communication unit 18. The first mobile phone 1 is further provided with a first mobile short-range communication unit 20 using a wireless LAN or the like, and wireless communication with other mobile phones or the like existing in the short-range communication range is possible. Yes. The first portable short-range communication unit 20 is based on a standard that is not problematic in terms of laws and regulations, and has a limited communication area but does not incur charges like a telephone line.

The first portable short-range communication unit 20 transmits the absolute position information acquired by the GPS unit 16 to the GPS unit of the other device in addition to the communication of the entry code described later, and the other device is the GPS unit. The acquired absolute position information can be received. As a result, not only the own position but also the positions of other devices can be displayed on the same map on the display unit 14, and the relative relationship between them can be confirmed on the map. Details thereof are described in Japanese Patent Application No. 2007-28393 by the same applicant. As will be described later, according to this function, for example, the relationship between the current position of the vehicle 3 stopped in the vast parking lot 4 and the first mobile phone 1 can be known, and it is easy to reach the vehicle 3. . The first mobile phone 1 also has a camera unit 22 and can store the captured image in the storage unit 12 and can transmit the image to another mobile phone by the first telephone communication unit 18. Can do.

The first mobile phone 1 is powered by a rechargeable main power supply 24, and the storage unit 12 is further backed up by an auxiliary power supply 26 made of a lithium battery or the like. This prevents volatilization of information stored in the storage unit 12 when the main power supply 24 is discharged or replaced. The first mobile phone 1 further includes a keyless entry communication unit 28 and a keyless entry code storage unit 30 that cooperates therewith. These are supplied with power from the auxiliary power source 26 and basically function regardless of the state of charge of the main power source 24 and its on / off state. Since the power consumption of the keyless entry communication unit 28 is weaker than that of the first short-range communication unit 20, the auxiliary power supply 26 of the storage unit 12 is shared in this way.

Because of this function, the first mobile control unit 6 is in a state where it is determined that charging of the main power supply 24 is insufficient for normal mobile phone functions even when the main power supply 24 is turned off. However, it is activated in the low-speed power saving mode so as to perform the minimum function for detecting the entry operation in the vehicle 3 received by the operation of the telephone operation unit 8 for the keyless entry operation or the keyless entry communication unit 28. ing. The keyless entry code storage unit 30 is also connected to the first portable control unit 6, and the locking and unlocking of the vehicle 3 based on the entry code stored in the keyless entry code storage unit 30 is performed by the keyless entry communication unit. This is possible not only by 28 but also by the first portable short-range communication unit 20. However, as will be described later, basically, the keyless entry communication unit 28 locks and unlocks the vehicle 3.

In the embodiment of FIG. 1, as described above, the keyless entry communication section 28 is controlled by the first portable control section 6, but as a modified embodiment, the keyless entry communication section is completely the first. A configuration independent of the portable control unit 6 is also possible. In this case, it is necessary to provide a dedicated operation unit for detecting a keyless entry operation. Note that a part of the operation keys of the telephone operation unit 8 may also be used as such a keyless entry operation unit, and the keyless entry communication unit 28 may directly detect the operation of this operation key.

The second mobile phone 2 has the same configuration as the first mobile phone 1 as already described, and the description thereof is omitted unless necessary to avoid duplication. As already described, in FIG. 1, the configuration of the second mobile phone 2 is omitted except for the second mobile control unit 32, the second telephone communication unit 34, and the second mobile short-range communication unit 36. ing. Further, in FIG. 1, the first mobile phone 1 and the second mobile phone 2 are illustrated as performing direct communication, but as is well known, the mobile phone is based on infrastructure communication of a communication line. The first telephone communication unit 18 and the second telephone communication unit 34 communicate with each other via a base station. On the other hand, in FIG. 1, the first mobile phone 1 and the second mobile phone 2 can perform direct ad hoc communication by the first mobile short-range communication unit 20 and the second mobile short-range communication unit 36.

The vehicle 3 includes a vehicle control unit 38 including a computer that controls the entire vehicle, and controls the vehicle function unit 42 and the like according to the operation of the vehicle operation unit 40. The function of the vehicle control unit 38 is executed by software stored in the storage unit 44. The storage unit 44 also temporarily stores various data necessary for controlling the vehicle 3.

The GPS unit 46 is the same as the GPS unit 16 in the first mobile phone 1, and based on the GPS system, information on latitude, longitude, and altitude, which is absolute position information of the vehicle 3, from a satellite or the nearest broadcasting station. Obtained and sent to the vehicle control unit 38. The absolute position information is displayed together with the map under the control of the vehicle control unit 38, and car navigation is performed. The vehicle 3 is also provided with a vehicle short-range communication unit 48 using a wireless LAN or the like, and wireless communication with the first portable short-range communication unit 20 or the like existing in the short-range communication range is possible. Of course, the vehicle short-range communication unit 48 is based on the same standard as the first portable short-range communication unit 20 and has a limited communication area, but does not incur charges like a telephone line.

The vehicle 3 further has a keyless entry communication unit 50, and communicates an entry code with the keyless entry communication unit 28 of the first mobile phone 1. Then, the entry code transmitted from the keyless entry code storage unit 30 through the keyless entry communication unit 28 is received by the keyless entry communication unit 50, and when it is authenticated by the keyless entry code management unit 52, the result is obtained. Is notified to the vehicle control unit 38. As a result, the vehicle control unit 38 instructs the door lock unit 54 to lock and unlock. Furthermore, even when the holder of the first mobile phone 1 performs an engine start operation with the vehicle operation unit 40, the engine lock is released by communication between the keyless entry communication units, and the engine can be started. That is, in this case, since the holder of the first mobile phone 1 is in the driver's seat of the vehicle 3, communication between the keyless entry communication unit 28 and the keyless entry communication unit 50 is possible. Then, communication between the two is performed according to the engine start operation, and when the keyless entry code management unit 52 authenticates that the entry code in the keyless entry code storage unit 30 is correct, the result is the vehicle control unit. 38 is notified. In response to this, the vehicle control unit 38 releases the lock of the engine lock unit 56 and enables the engine to start.

As described above, the entry code in the keyless entry code storage unit 30 of the first mobile phone 1 is transmitted from the first mobile short-range communication unit 20 to the vehicle short-range communication of the vehicle 3 via the first mobile control unit 6. Can be transmitted to the unit 48. This is effective when the auxiliary power supply 26 is exhausted. In this case, the vehicle control unit 38 sends the entry code received by the vehicle short-range communication unit 48 to the keyless entry code management unit 52, and authenticates whether this is correct. Based on the result, the vehicle control unit 38 instructs the door lock unit 54 to lock and unlock. In the above case, even when the engine start operation is performed, the entry code in the keyless entry code storage unit 30 is transmitted from the first portable short-range communication unit 20 to the vehicle short-range communication unit of the vehicle 3 via the first portable control unit 6. 48. When the keyless entry code management unit 52 authenticates that the entry code is correct, the vehicle control unit 38 is notified of the result. In response to this, the vehicle control unit 38 releases the lock of the engine lock unit 56 and enables the engine to start.

The above is a case where the owner of the first mobile phone 1 is also the owner of the vehicle 3. Next, the owner of the second mobile phone 2 owns the vehicle 3 and the first mobile phone The case where the telephone 1 is the property of the driving agent will be described. As already described, although not shown in FIG. 1, the second mobile phone 2 is the same as the first mobile phone 1, and includes a keyless entry code storage unit, a keyless entry communication unit, and the like. It has all configurations. The situation as described above occurs, for example, when the owner of the vehicle 3 is in a drinking state and requests a driving agent to forward the vehicle 3 and perform a driving operation to the home. At this time, the owner of the second mobile phone 2 who is the owner of the vehicle 3 passes the temporary entry code of the vehicle 3 from the second telephone communication unit 34 to the first telephone communication unit 18 of the driving agent through the telephone line. Send. As a result, the temporary entry code received is stored in the keyless entry code storage unit 30 of the first mobile phone. Hereinafter, the door lock unlocking of the vehicle 3 by the first mobile phone 1 and the first mobile phone 1 are performed in the same manner as described above. Engine lock can be released. Therefore, the driving agent can forward the vehicle 3 to a banquet hall where the vehicle owner is located, and can pick up the vehicle owner and drive the vehicle 3 to his home. The temporary entry code is limited to the requested proxy operation and is invalid after that. Details of the temporary entry code transmission and the like will be described later.

The parking lot 4 has a parking lot control unit 58 formed of a computer that controls the entire parking lot, and executes control by software stored in the storage unit 60. The storage unit 60 also temporarily stores various data necessary for controlling the parking lot 4. The parking lot 4 further includes a parking lot first short-range communication unit 62 and a parking lot second short-range communication unit 64 which are installed at different places in the parking lot. In addition, in the parking lot 4, in order to ensure the communication area in a parking lot, the 3rd and more short distance communication part is provided as needed. In FIG. 1, two short-range communication units are illustrated for simplicity.

The plurality of short-range communication units in these parking lots share and secure the communication area, and the first portable short-range communication unit 20 detects the short-range communication unit with which the first portable short-range communication unit 20 can communicate. The parking lot control unit 58 determines where the telephone 1 is in the parking lot 4. Furthermore, when the first portable short-range communication unit 62 and the second portable short-range communication unit 64 simultaneously receive the radio waves of the first portable short-range communication unit, for example, the parking lot control unit 58 is based on the triangle point communication. The position of the mobile phone can be determined more accurately. This makes it possible to detect the position of the first mobile phone 1 even if the first mobile phone 1 is outside the satellite radio wave area such as the parking lot 4 and the GPS 16 does not function. Note that the position of the first mobile phone 1 determined by the parking lot control unit 58 is transmitted from the nearest parking lot short-range communication unit to the first portable short-range communication unit 20. Similarly, for the parking position of the vehicle 3, when the GPS unit 46 of the vehicle 3 does not function, the parking lot control unit detects the communication between the vehicle short-range communication unit 48 and the second near-field communication unit 64. And transmitted to the first portable short-range communication unit 20.

As described above, the first mobile phone 1 knows its own position by its own GPS unit 16, and the position information of the vehicle 3 detected by the GPS unit 46 of the vehicle 3 is transmitted by the first mobile short-range communication unit 20. Therefore, even if the substitute driver does not know the position of the vehicle 3, the vehicle 3 can be reached by displaying the positional relationship between the two on the display unit 14. Furthermore, even when the GPS unit does not function, the first portable short-range communication unit 20 can receive information on its own position and the position of the vehicle 3 from the parking lot control unit 58, so that the positional relationship between the two is similarly displayed. It is displayed on the part 14 and can reach the vehicle 3 easily. The position information of the vehicle 3 is transmitted as long as the first portable short-range communication is performed unless the keyless entry code storage unit of the first mobile phone stores its own entry code or the temporary entry code received from the owner of the vehicle. Cannot be received by unit 20. Therefore, the position of the vehicle 3 is not transmitted to an unnecessary third party.

FIG. 2 is a basic flowchart of the function of the first portable control unit 6 in the embodiment of FIG. 1, in which the main power supply 24 is attached to the first mobile phone 1, charging starts to the main power supply 24, or the auxiliary power supply 26. Start by installing. When the flow starts, it is first checked in step S2 whether the auxiliary power supply 26 is OK. The level at which it is determined that “auxiliary power is not OK” is a limit that the backup of the storage unit 12 and the keyless entry code storage unit cannot be guaranteed if the auxiliary power source 26 is consumed and power is supplied to the keyless entry communication unit. Set to the previous level. In other words, as long as power is not supplied to the keyless entry communication unit, even at this level, the backup itself is at a level that is possible for the time being. If the auxiliary power supply is not OK in step S2, the process proceeds to step S4 to check whether the main power supply 24 is charged. The level that should be judged that “the main power supply is not charged” is the minimum operation of the first mobile control unit itself, but the mobile phone function is forcibly stopped because of insufficient charge for normal mobile phone operation It is a level that should be made. If charging of the main power source is OK in step S4, the process proceeds to step S6, and a warning display for prompting replacement of the auxiliary power source 26 is performed. Then, the process proceeds to step S8 while continuing this display.

In step S8, in order to prevent further consumption of the auxiliary power supply 26, the function of the keyless entry communication unit 28 is stopped proactively to disable communication. Corresponding to this, keyless entry communication by the first portable short-range communication unit 20 is enabled in step S10. The keyless entry communication by the first portable short-range communication unit 20 is not normally performed, but this is performed only when the process proceeds from step S2 to step S8 as described above. This is because the first portable short-range communication unit 20 is powered by the main power supply 24. The main power supply 24 needs to be charged frequently to supply power to the normal mobile phone function. If the main power supply 24 is neglected, the entire mobile phone 1 will not function. Does not work. Therefore, if the first portable short-range communication unit 20 is regularly used for the keyless entry function, the operation of the vehicle 3 including the keyless entry becomes impossible due to the battery running out of the cellular phone 1 which may occur frequently. This is inconvenient and in some cases dangerous. Therefore, normally, the keyless entry is performed by the keyless entry communication unit 28 that is powered by the auxiliary power supply 26 and functions regardless of the charging state of the main power supply 24 and on / off thereof, and the keyless entry code storage unit 30 that cooperates with the keyless entry communication unit 28. Do. However, since the auxiliary power supply 26 may be consumed due to long-term use, a flow from step S2 to step S10 is prepared as an emergency means at that time. This is based on the premise that when the auxiliary power supply 26 is consumed, the main power supply 24 is unlikely to be under charged.

When the keyless entry communication by the first portable short-range communication unit 20 is enabled in step S10, the process proceeds to step S12, and the keyless entry interrupt as the first portable control unit 6 is enabled. This interruption is applied when a keyless entry operation is performed by the telephone operation unit 8. In addition, the vehicle control unit 38 detects that an unlock button outside the vehicle, which is a part of the vehicle operation unit 40 of the vehicle 3, is operated, and the vehicle short-range communication unit 48 changes the first portable short-range communication unit 20. This interrupt is also applied when this is notified. Step S12 enables these interruptions, but normally, interruption to the first portable control unit 6 based on these operations is prohibited, and the keyless entry function based on these operations is keyless. It is executed by the entry communication unit 28.

Next, in step S14, the mobile phone function is initialized, and the flow ends. When it is determined in step S2 that the auxiliary power supply 26 is OK, the first mobile phone control unit 6 does not need to respond to the keyless entry operation, so the process proceeds to step S16 and the normal operation by the keyless entry communication unit 28 is performed. The keyless entry state is confirmed and the process proceeds to step S14. In step S16, the keyless entry communication unit 28 functions normally every time there is an opportunity such as the attachment of the main power supply 24 to the first mobile phone 1, the start of charging of the main power supply 24, or the attachment of the auxiliary power supply 26. This is provided to check whether or not to perform the keyless entry interrupt to the first portable control unit when it is possible.

If the main power supply 24 is not OK in step S4, the process proceeds to step S18 to check whether charging is in progress. Since the mobile phone 1 is capable of functioning during charging, the process proceeds to step S6, and the operations in step S6 and subsequent steps are performed by the power supplied from the charger. Such an operation is possible, for example, when the mobile phone 1 is charged in the vehicle. On the other hand, if it is not charging in step S18, the function of the mobile phone 1 is impossible, and the flow is immediately terminated. For example, in this case, the main power supply 24 is not charged when the worn auxiliary power supply 26 is erroneously attached, or the uncharged main power supply 24 is attached when the auxiliary power supply 26 is consumed. It corresponds to. Naturally, if no power is supplied to the first portable control unit 6, the flow of FIG. 2 itself does not start.

FIG. 3 is a flowchart showing a function when a keyless entry operation is performed in the first portable control unit 6 of the embodiment of FIG. In the flow, the vehicle control unit 38 detects that a keyless entry operation is performed by the telephone operation unit 8 or that a lock release button outside the vehicle which is a part of the vehicle operation unit 40 of the vehicle 3 is operated. When this is notified from the keyless entry communication unit 50 of the vehicle 3 to the keyless entry communication unit 28 of the first mobile phone 1, or an unlock button outside the vehicle that is part of the vehicle operation unit 40 of the vehicle 3 is operated. The vehicle control unit 38 detects that this has been done, and the vehicle short-distance communication unit 48 is notified of this by the first portable short-distance communication unit 20. Even when the engine starting operation by the vehicle operation unit 40 is detected by the vehicle control unit 38, the flow of FIG. 3 starts in the same manner as the operation detection of the unlock button.

When the flow starts, it is checked in step S22 whether the auxiliary power source 26 is OK. If not OK, the process proceeds to step S24 to check whether the main power supply 24 is charged. If charging of the main power source is OK in step S24, the process proceeds to step S26, and a warning display for prompting replacement of the auxiliary power source 26 is performed. Then, the process proceeds to step S28 while continuing this display. In step S28, the function of the keyless entry communication unit 28 is stopped, communication is disabled, and the process proceeds to step S30. In step S30, if the main power supply 24 is not on, it is turned on in step S32 and the process proceeds to step S32. This is because if the main power supply 24 is turned off, the first portable short-range communication unit 20 is not energized and keyless entry cannot be performed. On the other hand, if the main power supply is already on in step S30, the process directly proceeds to step S34.

In step S34, keyless entry such as locking / unlocking of the door lock unit 54 and release of the engine lock is executed based on communication by the first portable short-range communication unit 20. Next, in step S36, it is checked whether or not there is a history in which the main power supply is automatically turned on in step S32. If there is a history, the process proceeds to step S38, where the main power supply is automatically turned off and the flow ends. This is to restore the main power supply of the mobile phone that is automatically turned on for execution of keyless entry. On the other hand, if there is no history of main power supply automatic ON in step S36, it means that the main power supply of the mobile phone was originally turned on before the detection of the keyless entry operation. .

When it is determined in step S22 that the auxiliary power supply 26 is OK, the first mobile phone control unit 6 does not need to respond to the keyless entry operation, so the process proceeds to step S40, and the normal operation by the keyless entry communication unit 28 is performed. Confirm the keyless entry status and end the flow. This step S40 checks whether or not the keyless entry communication unit 28 functions normally every time there is an opportunity for a keyless entry operation, and enables a keyless entry interrupt to the first portable control unit. It is provided to make this impossible in some cases. If the main power supply is not charged in step S24, neither the auxiliary power supply nor the main power supply can execute the keyless entry, and the flow is immediately terminated.

FIG. 4 is a flowchart showing the function of the first mobile control unit 6 when the main power supply of the mobile phone is turned on in the embodiment of FIG. When the flow starts, it is checked in step S52 whether or not charging of the main power source is OK. If the charging is OK, the process proceeds to step S54 to check whether the auxiliary power supply 26 is OK. If the auxiliary power supply is not OK, the process proceeds to step S56, and a warning display for urging replacement of the auxiliary power supply 26 is performed. Then, the process proceeds to step S58 while continuing this display.

In step S58, in order to prevent further consumption of the auxiliary power supply 26, the function of the keyless entry communication unit 28 is stopped proactively to disable communication. Correspondingly, keyless entry communication by the first portable short-range communication unit 20 is enabled in step S60, and the process proceeds to normal cellular phone function processing in step S62. When the normal telephone function process is stopped, the flow is terminated. When it is determined in step S54 that the auxiliary power supply 26 is OK, the first mobile phone control unit 6 does not need to respond to the keyless entry operation, and the process directly proceeds to step S62. If it is not detected in step S52 that the main power supply is charged, the flow is immediately terminated. As described above, by checking whether or not the auxiliary power source is OK every time the main power source of the mobile phone is turned on, a situation in which keyless entry by the auxiliary power source cannot be performed is detected. If the auxiliary power supply is not OK, the keyless entry function is automatically switched from the keyless entry communication unit to the short-range communication unit, and the auxiliary power supply is further consumed, making it impossible to back up the storage unit 12. To prevent.

FIG. 5 is a flowchart illustrating the function of the first portable control unit 6 when a telephone call operation to a pre-registered substitute driver is performed by the telephone operation unit 8 in the embodiment of FIG. . When the flow starts, a call is made to the telephone number of the substitute driver registered in step S72, and it is checked whether or not the line is connected in step S74. When the connection is confirmed, the process proceeds to step S76, and it is checked whether or not an operation for transmitting the entry code is performed by the telephone operation unit 8. If it is confirmed that this operation has been performed, the process proceeds to step S78, a signal requesting authentication is superimposed on the voice signal of the telephone, and the process proceeds to step S80. In step S80, it is checked whether or not a predetermined time has passed after the transmission of the authentication request signal. If not, the process proceeds to step S82, and an authentication signal that is superposed on the audio signal according to the request has been extracted. Check it out.

When the authentication reply signal is extracted from the voice signal in step S82, the process proceeds to step S84, where it is checked against the reference data, and it is checked whether the authentication result is OK. If the authentication result is OK, the process proceeds to step S86. On the other hand, if an authentication reply signal is not extracted in step S82, or if authentication is not OK in step S84, the process returns to step S80, and thereafter, steps S80 to S84 are repeated until a predetermined time elapses, and authentication is OK. Wait for. If the authentication is successful, in step S86, the temporary keyless entry code is read out, and in step S88, this is superimposed on the audio signal and transmitted to the substitute driver's phone. In step S90, it is checked whether or not a predetermined time has elapsed after transmission. If not, whether a confirmation signal indicating that the temporary keyless entry code has been received in step S92 has been extracted from the voice signal from the substitute driver's telephone. Check it out. If this extraction can be performed, the process proceeds to step S94. If the extraction cannot be performed, the process returns to step S88, and the temporary keyless entry code is transmitted again. Thereafter, steps S88 to S92 are repeated until a predetermined time elapses, and extraction of a reception confirmation signal is awaited.

When the reception confirmation signal is extracted in step S92, the temporary keyless entry code is surely transmitted to the substitute driver. Therefore, the process proceeds to step S94, and it is checked whether the line disconnection operation has been performed. When the line is disconnected, the flow is terminated. On the other hand, if a line disconnection operation is not detected in step S94, the process returns to step S76, and thereafter steps S76 to S94 are repeated. When a predetermined time has elapsed in step S80 or step S90, the process proceeds to step S94, where it is checked whether an operation for disconnecting the line and ending the flow has been performed. If the line disconnection is not detected in step S94, the process returns to step S76, so that the entry code transmission operation can be performed again.

It is a block diagram which shows the Example of the keyless entry system which concerns on embodiment of this invention. . It is a basic flowchart of the function of the portable control part in the Example of FIG. It is a flowchart which shows a function when there is keyless entry operation in the portable control part of the Example of FIG. 2 is a flowchart illustrating functions of a mobile control unit when a main power supply of a mobile phone is turned on in the embodiment of FIG. 2 is a flowchart illustrating functions of a portable control unit when a telephone call operation to a substitute driver is performed in the embodiment of FIG.

Explanation of symbols

24 Main power supply 10 Telephone function section 20 Short-range communication section 12 Storage section 26 Auxiliary power supply 28, 30 Keyless entry section

Claims (12)

A main power source, a telephone function unit fed from the main power source, a telephone communication unit fed from the main power source, a near field communication unit fed from the main power source, and fed from the main power source and the A cellular phone comprising: a storage unit that stores data necessary for the telephone function unit; an auxiliary power source that supplies power to the storage unit; and a keyless entry unit that is supplied with power from the auxiliary power source. 2. The mobile phone according to claim 1, wherein the keyless entry unit includes a keyless entry code storage unit that stores a keyless entry code and a keyless entry communication unit that performs communication dedicated to the keyless entry. 3. The mobile phone according to claim 2, wherein the keyless entry unit can be powered by the main power source and can communicate by the short-range communication unit instead of the keyless entry communication unit. 4. The mobile phone according to claim 3, further comprising a control unit that causes the short-range communication unit to perform communication of the keyless entry unit instead of the keyless entry communication unit when the auxiliary power is consumed. 5. The mobile phone according to claim 1, further comprising a control unit that notifies when the auxiliary power is consumed when the main power is turned on. 6. The mobile phone according to any one of claims 1 to 5, further comprising a control unit that notifies when the auxiliary power source is exhausted when the main power source is charged. The mobile phone according to any one of claims 1 to 6, further comprising a control unit for notifying when the auxiliary power source is consumed when a keyless entry operation is performed. The mobile phone according to any one of claims 1 to 7, further comprising a control unit that turns on the main power supply when the keyless entry operation is performed, in response to the keyless entry operation. 9. The controller according to claim 8, wherein when the keyless entry operation is performed, the auxiliary power supply is incomplete and the main power supply is turned on in response to the keyless entry operation when the main power supply is off. The listed mobile phone. 10. The mobile phone according to claim 8, wherein when the main power is turned on in response to a keyless entry operation, the control unit turns off the main power upon completion of the keyless entry. A main power source, a telephone function unit fed from the main power source, a telephone communication unit fed from the main power source, a near field communication unit fed from the main power source, and fed from the main power source and the A storage unit that stores data necessary for the telephone function unit, an auxiliary power source that supplies power to the storage unit, and a control unit that notifies when the auxiliary power source is consumed when the main power source is turned on And a mobile phone. A main power source, a telephone function unit fed from the main power source, a telephone communication unit fed from the main power source, a near field communication unit fed from the main power source, and fed from the main power source and the A storage unit for storing data necessary for the telephone function unit, an auxiliary power source for supplying power to the storage unit, and a control for notifying the auxiliary power source when the main power source is exhausted when the main power source is charged And a mobile phone.