JP2005142642A - Built-in type wireless communication apparatus, on-vehicle data access unit, and electronic mail communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology of preventing a main CPU from being unnecessarily started. <P>SOLUTION: Upon the receipt of an SMS transmission signal transmitted from an electronic mail server 11 via a base station 12, a built-in wireless communication apparatus 2 mounted on an on-vehicle data access unit 1 starts the main CPU 3 when the incoming call by the received SMS transmission signal is valid, and the built-in wireless communication apparatus 2 inhibits starting of the main CPU 3 when the incoming call by the received SMS transmission signal is invalid on the other hand. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an embedded wireless communication device configured to be mountable in an in-vehicle data access unit in which a main CPU is mounted, an in-vehicle data access unit including an embedded wireless communication device, an embedded wireless communication device, and an electronic device. The present invention relates to an electronic mail communication system for communicating electronic mail with a mail server.

  In the configuration in which the wireless communication device is installed in the in-vehicle data access unit together with the main CPU as the embedded wireless communication device, when the embedded wireless communication device arrives, an activation signal is output from the embedded wireless communication device to the main CPU, The main CPU is activated. However, in such a configuration, since the main CPU is activated every time an embedded wireless communication device arrives, there is a problem that the power consumption of the entire unit increases. In particular, the built-in wireless communication device performs a standby operation even when the accessory switch is turned off so that the parking / stopping position of the vehicle can be confirmed from a remote location for the purpose of preventing theft of the vehicle, If the built-in wireless communication device or the main CPU operates using power supplied from the battery as the operating power, the power consumption of the entire unit will increase rapidly if the embedded wireless communication device receives frequent calls. Therefore, there is a possibility that the power of the battery may be suddenly reduced without the user's knowledge.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to prevent the main CPU from starting unnecessarily and to suppress power consumption of the entire unit. An object is to provide an embedded wireless communication device, an in-vehicle data access unit, and an electronic mail communication system.

  According to the embedded wireless communication device of claim 1, when the short message service transmission signal is received by the wireless means from the electronic mail server, the control means analyzes the received short message service transmission signal. It is determined whether or not the incoming call by the short message service transmission signal is valid, and if the incoming call by the short message service transmission signal is detected, the main CPU mounted on the in-vehicle data access unit is activated. On the other hand, when it is detected that the incoming call by the short message service transmission signal is not valid, the activation of the main CPU mounted on the in-vehicle data access unit is prohibited.

  Thereby, if the incoming call by the short message service transmission signal received from the e-mail server is valid, the main CPU is activated. In contrast, the short message service transmission signal received from the e-mail server is used. If the incoming call is not valid, the activation of the main CPU is prohibited, so that the main CPU can be prevented from starting unnecessarily, and the power consumption of the entire unit can be suppressed. In this case, the short message service transmission signal is a signal defined by the short message service that enables transmission and reception of short text messages between mobile phones.

  According to the embedded wireless communication device described in claim 2, when the incoming signal transmitted from the base station is received by the wireless means, the control means transmits the calling telephone number stored in the received incoming signal. Is extracted and it is determined whether or not it is the same as the registered telephone number stored in the storage means, and if it is detected that both are the same, the main CPU mounted on the in-vehicle data access unit is activated. On the other hand, when it is detected that the two are not the same, activation of the main CPU mounted on the in-vehicle data access unit is prohibited.

  As a result, if the calling telephone number stored in the incoming signal received from the base station, that is, the telephone number assigned to the e-mail sending terminal that sent the e-mail is the same as the registered telephone number, the main telephone number On the other hand, if the telephone number assigned to the e-mail sending terminal that sent the e-mail is not the same as the registered telephone number, the activation of the main CPU is prohibited. Therefore, similarly to the above-described aspect, it is possible to prevent the main CPU from starting unnecessarily, and to reduce power consumption as a whole unit.

  According to the electronic mail communication system described in claim 4, the electronic mail server has a built-in short message service transmission signal storing encrypted data indicating whether or not the incoming call by the short message service transmission signal is valid. In the embedded wireless communication device, the control means extracts the encrypted data stored in the short message service transmission signal received from the e-mail server and decrypts it, thereby transmitting the short message service. It is determined whether or not the incoming call by the outgoing signal is valid. Thereby, since it is determined by the encrypted data whether or not the incoming call by the short message service transmission signal is valid, safety and confidentiality can be appropriately ensured.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a functional block diagram showing the configuration of an in-vehicle data access unit. The in-vehicle data access unit 1 includes an embedded wireless communication device 2, a main CPU 3, an operating power supply unit 4, a first interface unit 5, and a second interface unit 6. The built-in wireless communication device 2 includes a control unit 7 (control unit according to the present invention), a radio unit 8 (wireless unit according to the present invention), a memory 9 (storage unit according to the present invention), and an operating power supply unit. 10.

  The control unit 7 includes a CPU, a RAM, a ROM, an I / O bus, and the like, and controls the overall operation of the embedded wireless communication device 2 by executing a control program. The wireless unit 8 performs wireless processing based on a control signal input from the control unit 7. In this case, a short message service (hereinafter referred to as SMS) transmission signal transmitted from the electronic mail server 11 is transmitted to the base station. When received through the station 12, the SMS reception response signal is transmitted to the e-mail server 11 through the base station 12, or when the incoming signal transmitted from the base station 12 is received, the incoming response signal is transmitted to the base station 12. To do. In this case, the SMS transmission signal, the SMS reception response signal, and the SMS transfer signal, which will be described later, are signals defined by SMS that enable transmission and reception of short text messages between mobile phones.

  The memory 9 stores the telephone number input by the user in a database as a registered telephone number. In this case, if the user has a configuration in which a car navigation device is connected to the vehicular data access unit 1, a touch panel key displayed on a mechanical key provided on the car navigation device or a display of the car navigation device. It is possible to register an arbitrary telephone number in the memory 9 as a registered telephone number. The operating power supply unit 10 supplies power supplied from a battery (not shown) mounted on the vehicle 13 (see FIG. 2) to the control unit 7 as operating power.

  The main CPU 3 is configured to start when a start signal is input from the control unit 7 and to stop starting when a start stop signal is input from the control unit 7. A control program is executed to control the overall operation of the in-vehicle data access unit 1. The operating power supply unit 4 receives power supplied from the control unit 7 and supplies power supplied from a battery (not shown) mounted on the vehicle 13 to the main CPU 3 as operating power. When the power supply stop signal is input from the control unit 7, the supply of operating power from the battery to the main CPU 3 is stopped.

  The first interface unit 5 has an interface function with a car navigation device mounted on the vehicle 13 and controls data transfer performed between the main CPU 3 and the car navigation device. The second interface unit 6 has an interface function with a vehicle alarm device mounted on the vehicle 13 and controls data transfer performed between the main CPU 3 and the vehicle alarm device.

  FIG. 2 schematically shows the overall configuration of the system. In this case, the e-mail server 14 receives a transmission signal from the e-mail transmission terminal 15 under its management (registered location) through the base station 16, and the e-mail is transmitted from the e-mail transmission terminal 15 to the base station 16. When the electronic mail server 11 is received, the electronic mail server 11 managing the embedded wireless device 2 to which the transmission destination address is assigned is identified by decoding the transmission destination address of the electronic mail, and the identified electronic A transmission signal is transmitted to the mail server 11.

  When the e-mail server 11 receives the outgoing signal from the e-mail server 14 that manages the e-mail sending terminal 15 that is the e-mail transmission source, the e-mail server 11 sends the SMS outgoing signal to the embedded wireless communication device 2 through the base station 12. Or transmit a connection request signal to the base station 12. In the above-described configuration, the e-mail transmission terminal 15 is configured by, for example, a mobile phone, a portable information terminal, a notebook computer terminal, or a stationary computer terminal.

Next, the operation of the above configuration will be described with reference to FIGS. here,
(1) Activation process of main CPU 3 by SMS transmission signal (2) Activation process of main CPU 3 by incoming signal will be described sequentially.

(1) Start-up process of main CPU 3 by SMS transmission signal First, "start-up process of main CPU 3 by SMS transmission signal" will be described with reference to FIG. 3 and FIG. This process corresponds to that described in claim 1 in the present invention.

  In this case, when the e-mail server 11 receives the transmission signal transmitted from the e-mail server 14 in response to the e-mail transmission terminal 15 transmitting the e-mail, the e-mail server 11 transmits the SMS transmission signal through the base station 12. Transmit to the embedded wireless communication device 2. Here, in the embedded wireless communication device 2, the control unit 7 thereafter executes the processing shown as a flowchart in FIG. 4.

  That is, when in the standby state, the control unit 7 monitors whether the SMS transmission signal transmitted from the e-mail server 11 is received by the wireless unit 8 through the base station 12 (step S1). When it is detected that the transmission signal is received by the wireless unit 8 (“YES” in step S1), an SMS reception response signal is transmitted from the wireless unit 8 to the electronic mail server 11 through the base station 12 (step S2). The received SMS transmission signal is analyzed (step S3), and it is determined whether the incoming call by the SMS transmission signal is valid (step S4).

  In this case, whether or not the incoming call by the SMS outgoing signal is valid is determined by, for example, transmitting an SMS outgoing signal in which the e-mail server 11 adds an identifier indicating whether or not the incoming call by the SMS outgoing signal is valid as a header. Then, the control unit 7 decodes the identifier added as a header to the SMS transmission signal received from the e-mail server 11. In this case, the identifier may be expressed by encrypted data that is encrypted.

  Here, when the control unit 7 detects that the incoming call by the SMS transmission signal is valid (“YES” in step S4), the control unit 7 outputs an activation signal to the main CPU 3 and outputs a power supply signal to the operating power supply unit 4. The operating power is supplied from the operating power supply unit 4 to the main CPU 3, and the main CPU 3 is activated (step S5). When the control unit 7 detects that the activation response signal is input from the main CPU 3 (“YES” in step S6), the control unit 7 outputs an SMS transfer signal to the main CPU 3 (step S7). Is detected ("YES" in step S8), a transmission signal is transmitted from the wireless unit 8 to the base station 12 (step S9).

  On the other hand, when the control unit 7 detects that the incoming call by the SMS transmission signal is not valid (“NO” in step S4), the control unit 7 returns to the above-described step S1 without activating the main CPU 3, and the e-mail server. 11 again monitors whether or not the SMS transmission signal transmitted from 11 is received by the wireless unit 8 through the base station 12.

  When the base station 12 receives the transmission signal transmitted from the embedded wireless communication device 2, the base station 12 transmits a connection signal to the electronic mail server 11, and the electronic mail server 11 receives the connection signal transmitted from the base station 12. When received, the base station 12 transmits a connection response signal to the base station 12. When the base station 12 receives the connection response signal transmitted from the electronic mail server 11, the base station 12 transmits a connection completion signal to the embedded wireless communication device 2. To do.

  In the embedded wireless communication device 2, when the control unit 7 detects that the connection completion signal transmitted from the base station 12 is received by the wireless unit 8 (“YES” in step S <b> 10), the control unit 7 outputs the connection completion signal as the main signal. The data is output to the CPU 3 (step S11), and thereafter data communication is executed based on an instruction from the main CPU 3 (step S12). When the control unit 7 detects that a disconnection signal has been input from the main CPU 3 (“YES” in step S13), the control unit 7 transmits the disconnection signal from the wireless unit 8 to the electronic mail server 11 through the base station 12 (step S13). S14).

  When the disconnection signal transmitted from the embedded wireless communication device 2 is received through the base station 12, the electronic mail server 11 transmits a disconnection response signal to the embedded wireless communication device 2 through the base station 12.

  In the embedded wireless communication device 2, when the control unit 7 detects that the disconnection response signal transmitted from the e-mail server 11 is received by the wireless unit 8 through the base station 12 ("YES" in step S15), A start / stop signal is output to the main CPU 3, and a power supply stop signal is output to the operating power supply unit 4 to stop the supply of operating power from the operating power supply unit 4 to the main CPU 3, thereby stopping the starting of the main CPU 3. (Step S16).

  In the above-described processing, the control unit 7 waits for a signal that is transmitted from the electronic mail server 11 or the base station 12 or a signal that is input from the main CPU 3 for a predetermined time, and the signal is defined. If it is not received or input in time, the process returns to the above step S1 without performing the subsequent processing, and the SMS transmission signal transmitted from the e-mail server 11 is transmitted to the wireless unit through the base station 12. 8 will be monitored again.

  By the series of processes described above, the embedded wireless communication device 2 can receive the SMS transmission signal transmitted from the e-mail server 11 and if the incoming call by the received SMS transmission signal is valid, The main CPU 3 is activated. On the other hand, if the incoming call by the received SMS transmission signal is not valid, the activation of the main CPU 3 is prohibited.

(2) Start-up process of main CPU 3 by incoming signal Next, “start-up process of main CPU 3 by incoming signal” will be described with reference to FIG. 5 and FIG. This process corresponds to that described in claim 2 in the present invention.

  In this case, when the e-mail server 11 receives the transmission signal transmitted from the e-mail server 14 in response to the e-mail transmission terminal 15 transmitting the e-mail, the e-mail server 11 sends a connection request signal to the base station 12. When the connection request signal transmitted from the electronic mail server 11 is received, the base station 12 transmits an incoming signal to the embedded wireless communication device 2. Here, in the embedded wireless communication device 2, the control unit 7 thereafter executes the processing shown as a flowchart in FIG. 6.

  That is, when in the standby state, the control unit 7 monitors whether the incoming signal transmitted from the base station 12 is received by the wireless unit 8 (step S21), and the incoming signal is transmitted to the wireless unit 8. When it is detected that it has been received (“YES” in step S21), the outgoing telephone number stored in the received incoming signal is extracted (step S22), and the extracted outgoing telephone number and the memory 9 are extracted. It is determined whether or not the stored outgoing telephone number is the same (step S23).

  Here, when the control unit 7 detects that they are the same (“YES” in step S23), the control unit 7 outputs an activation signal to the main CPU 3 and outputs a power supply signal to the operating power supply unit 4. The operating power is supplied from the operating power supply unit 4 to the main CPU 3, and the main CPU 3 is activated (step S24). When detecting that the activation response signal is input from the main CPU 3 (“YES” in step S25), the control unit 7 causes the wireless unit 8 to transmit the incoming response signal to the base station 12 (step S26).

  On the other hand, when the control unit 7 detects that they are not the same ("NO" in step S23), the control unit 7 returns to the above step S21 without activating the main CPU 3, and returns to the above step S21. Whether or not the incoming signal transmitted from the base station 12 is received by the wireless unit 8 is monitored again.

  When the base station 12 receives the incoming response signal transmitted from the embedded wireless communication device 2, the base station 12 transmits a connection response signal to the e-mail server 11, and the e-mail server 11 transmits the connection response signal transmitted from the base station 12. When the signal is received, data communication is performed. Accordingly, in the embedded wireless communication device 2, the control unit 7 thereafter performs data communication based on an instruction from the main CPU 3 (step S27).

  When the e-mail server 11 finishes the data communication, the e-mail server 11 transmits a disconnection request signal to the base station 12, and when the base station 12 receives the disconnection request signal transmitted from the e-mail server 11, the disconnection signal is embedded. Transmit to the wireless communication device 2.

  In the embedded wireless communication device 2, when the control unit 7 detects that the disconnection signal transmitted from the base station 12 is received by the wireless unit 8 (“YES” in step S <b> 28), the control unit 7 sends a start / stop signal to the main CPU 3. And the power supply stop signal is output to the operating power supply unit 4, the supply of the operating power from the operating power supply unit 4 to the main CPU 3 is stopped, the activation of the main CPU 3 is stopped (step S29), and the disconnection is performed. A response signal is transmitted from the wireless unit 8 to the electronic mail server 11 through the base station 12 (step S30).

  In the above-described processing, the control unit 7 also waits for a signal that is transmitted from the base station 12 or a signal that is input from the main CPU 3 for a specified time in advance. If the received signal is not received or input, the process returns to step S21 without performing the subsequent processing, and whether or not the incoming signal transmitted from the base station 12 has been received by the radio unit 8 or not. Will be monitored again.

  Through the series of processes described above, when the embedded wireless communication device 2 receives the incoming signal transmitted from the base station 12, the outgoing telephone number and the registered telephone number extracted from the received incoming signal. Are activated, the main CPU 3 is activated. On the other hand, if the outgoing telephone number extracted from the received incoming signal and the registered telephone number are not identical, the main CPU 3 is activated. It will be prohibited.

  By the way, in the configuration described above, the embedded wireless communication device 2 has both a function of executing the startup process of the main CPU 3 by the SMS transmission signal and a function of executing the startup process of the main CPU 3 by the incoming signal. There is no need to have such a configuration, and any configuration having one of the functions may be used. In the configuration in which the embedded wireless communication device 2 has one of a function of executing the startup process of the main CPU 3 by the SMS transmission signal and a function of executing the startup process of the main CPU 3 by the incoming signal, the electronic mail server 11 Determines whether to transmit the SMS transmission signal to the embedded wireless communication device 2 through the base station 12 or to transmit the connection request signal to the base station 12 according to the function of the embedded wireless communication device 2 Just do it.

  As described above, according to the present embodiment, in the embedded wireless communication device 2 mounted on the in-vehicle data access unit 1, when the activation process of the main CPU 3 by the SMS transmission signal is executed, an e-mail When the SMS transmission signal transmitted from the server 11 is received through the base station 12, if the incoming call by the received SMS transmission signal is valid, the main CPU 3 is activated, and the received SMS is received. Since the activation of the main CPU 3 is prohibited if the incoming call by the outgoing signal is not valid, it is possible to prevent the main CPU 3 from starting unnecessarily, and the power consumption of the entire unit is suppressed. be able to.

  Further, in the embedded wireless communication device 2, when the activation process of the main CPU 3 by the incoming signal is executed, when the incoming signal transmitted from the base station 12 is received, it is extracted from the received incoming signal. If the outgoing telephone number and the registered telephone number stored in the memory 9 are the same, the main CPU 3 is activated, and the outgoing telephone number extracted from the received incoming call signal is stored in the memory 9. If the registered telephone number is not the same, the activation of the main CPU 3 is prohibited, so that in this case as well, it is possible to prevent the main CPU 3 from being activated unnecessarily. The power consumption as a whole can be suppressed.

  Further, in the case where the activation process of the main CPU 3 by the SMS transmission signal is executed, the identifier indicating whether or not the incoming call by the SMS transmission signal is valid is expressed by encrypted encrypted data, thereby ensuring safety and concealment. Sex can be secured appropriately. Further, in the case of executing the activation process of the main CPU 3 by the SMS transmission signal, when the SMS transmission signal transmitted from the e-mail server 11 is received by the embedded wireless communication device 2 through the base station 12, the embedded wireless communication device 2 immediately transmits the SMS reception response signal to the e-mail server 11 through the base station 12, so that the embedded wireless communication device 2 sends the activation signal to the main CPU 3 as compared with the case where the activation process of the main CPU 3 is performed by the incoming signal. It is possible to avoid the influence due to the size of the startup time required until the main CPU 3 is started after being output to.

The present invention is not limited to the above-described embodiment, and can be modified or expanded as follows.
Not only the configuration in which the control unit and the main CPU operate using the power supplied from the battery mounted on the vehicle as the operating power, but also the power that the control unit and the main CPU supply from a unique power supply source (for example, a battery). May be configured to operate as the operating power, and if such a configuration is used, even if a failure occurs in the battery mounted on the vehicle for some reason, the operation of the control unit and the main CPU can be ensured. Can improve safety.

Functional block diagram showing an embodiment of the present invention Diagram showing the overall system configuration Sequence Diagram flowchart 3 equivalent diagram 4 equivalent diagram

Explanation of symbols

In the drawings, 1 is an in-vehicle data access unit, 2 is a built-in wireless communication device, 3 is a main CPU, 7 is a control unit (control unit), 8 is a radio unit (wireless unit), and 9 is a memory (storage unit). is there.

Claims (4)

An embedded wireless communication device configured to be mountable on an in-vehicle data access unit equipped with a main CPU,
A wireless means for receiving a short message service transmission signal transmitted from an e-mail server;
Analyzing the short message service outgoing signal received by the wireless means to determine whether the incoming call by the short message service outgoing signal is valid, and detecting that the incoming call by the short message service outgoing signal is valid And a control unit that activates the main CPU in the event of a failure, and prohibits activation of the main CPU when it is detected that the incoming call by the short message service transmission signal is not valid. Communication machine. An embedded wireless communication device configured to be mountable on an in-vehicle data access unit equipped with a main CPU,
A wireless means for receiving an incoming signal transmitted from the base station;
Storage means for storing a registered telephone number;
The outgoing telephone number stored in the incoming signal received by the wireless means is extracted to determine whether or not it is the same as the registered telephone number stored in the storage means, and that both are the same A built-in wireless communication device comprising: a control unit that activates the main CPU when detected, and prohibits activation of the main CPU when it is detected that they are not the same. An embedded wireless communication device according to claim 1 or 2,
An in-vehicle data access unit comprising a main CPU activated by the control means. An embedded wireless communication device according to claim 1;
An e-mail server that transmits a short message service transmission signal to an embedded wireless communication device,
The e-mail server transmits a short message service transmission signal storing encrypted data indicating whether or not the incoming call by the short message service transmission signal is valid, to the embedded wireless communication device,
The control means determines whether or not the incoming call by the short message service transmission signal is valid by extracting and decrypting the encrypted data stored in the short message service transmission signal received from the e-mail server. An electronic mail communication system.

Images