JP6456055B2 - Cooperation system, cooperation apparatus, signal processing method - Google Patents

Description

  The present invention relates to a technology for communication between a cooperation apparatus and a mobile terminal.

  In recent years, an e-call (emergency call) system for transmitting information about a vehicle accident to a center and contacting the medical institution from the center to rescue a vehicle occupant has been spreading in Europe and the like.

  In this system, for example, an e-call unit is provided in the vehicle interior of the vehicle, and the e-call unit is electrically connected to the linkage device and the vehicle control device. The cooperation device is an in-vehicle device such as a display audio that executes various functions in cooperation with a smartphone, for example, and the vehicle control device is an ECU (Electronic Control Unit) that controls an airbag or the like, for example. When a vehicle equipped with the e-call unit collides with another vehicle or the like, the e-call unit receives emergency information from the ECU, and the received emergency information is transmitted to the center communication device via a network such as the Internet. Send to. The emergency information is, for example, information indicating that the vehicle airbag has been deployed, vehicle position information, and the like. The e-call unit establishes a call with a communication device at the center according to a wireless communication standard such as 3.9G including LTE (Long Term Evolution) or 4G including LTE-Advanced. In the center, the situation of the accident is analyzed from the emergency information received by the communication device, the information acquired by the telephone call, etc., and the analyzed information is transmitted to a medical institution or the like. As a result, the rescue of the vehicle occupant and the like is performed appropriately and promptly.

  The cooperation apparatus electrically connected to the e-call unit is wirelessly connected to a mobile terminal such as a smartphone based on a profile that standardizes a communication procedure for wireless communication. For example, based on HFP (Hands-Free Profile) which is one of the profiles of Bluetooth (registered trademark), the cooperation device and the portable terminal are wirelessly connected. For this reason, when a mobile terminal possessed by a user in the vehicle interior and a mobile terminal possessed by a user outside the vehicle interior establish a call based on a telephone line such as 4G, the user in the vehicle interior holds the mobile terminal in hand. Even if it is not possessed, it is possible to transmit and receive audio signals with a user of a portable terminal outside the vehicle compartment using a microphone and a speaker provided in the vehicle compartment. That is, the user in the vehicle interior can talk with the user outside the vehicle interior in a hands-free manner.

  In this way, when a user in the vehicle interior makes a hands-free call, the audio signal input from the microphone in the vehicle interior is transmitted to the cooperation device via the e-call unit, and the portable device in the vehicle interior is transmitted from the cooperation device based on the HFP. Sent to the terminal. The portable terminal in the vehicle interior transmits an audio signal to the portable terminal outside the vehicle cabin via a telephone line. Note that there is Patent Document 1 as a material for explaining the technology related to the present invention.

JP 2007-295577 A

  Here, when the e-call unit receives the airbag operation signal from the ECU, the e-call unit establishes a call with the communication device at the center. Therefore, the e-call unit transmits the audio signal input to the microphone to the communication device at the center without transmitting it to the cooperation device. In this way, the e-call unit changes the transmission destination of the audio signal input to the microphone from the cooperation device to the communication device of the center using the airbag operation signal as a trigger. Therefore, even when a call is established between a mobile terminal in the vehicle interior and a mobile terminal outside the vehicle interior, the voice uttered by the user in the vehicle interior is output from the speaker of the mobile terminal outside the vehicle interior. There is no.

  Further, the e-call unit transmits a mute instruction signal to the cooperation device when the airbag activation signal is received. The mute instruction signal is a signal that prohibits the output of a sound signal from a speaker in the vehicle interior that is electrically connected to the cooperation device. For this reason, even when a call is established between the portable terminal in the passenger compartment and the portable terminal outside the passenger compartment, when the cooperation device receives the mute instruction signal, the voice uttered by the user outside the passenger compartment is No output from indoor speakers.

  In this way, the user's mobile terminal in the vehicle interior and the user's mobile terminal outside the vehicle interior are in a state where the mutual audio signal is not output from the speaker even though the call is established, and the user outside the vehicle interior is confused. There was a risk of such.

  The present invention has been made in view of the above-described problems, and provides a technique for eliminating the continuation of a state in which each other's voice cannot be transmitted despite a hands-free call being established.

In order to solve the above-described problem, the invention of claim 1 connects a cooperation device and a portable terminal by wireless communication, and the cooperation device and the portable terminal operate in cooperation based on the wireless communication profile. In the cooperation system, the cooperation device releases the cooperation based on the profile with the mobile terminal when the prohibition signal instructing the output prohibition of the acoustic information from the speaker is acquired, and the mobile terminal Before terminating the establishment of the call with the other portable terminal after the termination of the cooperation with the cooperation apparatus and ending the establishment of the call with the other portable terminal, information on the position of the vehicle on which the cooperation apparatus is provided Including information regarding the termination of the establishment of the call, to the other portable terminal .

The invention of claim 2 is a cooperation device that operates in cooperation with a portable terminal based on a wireless communication profile, and obtains a prohibition signal for instructing prohibition of output of acoustic information from a speaker; A communication means for transmitting a command signal for ending establishment of a call between the portable terminal and another portable terminal to the portable terminal; and a releasing means for releasing the cooperation based on the profile with the portable terminal. When the acquisition unit acquires the prohibition signal, the means includes the command signal and information on the position of the vehicle provided with the cooperation device that is transmitted from the mobile terminal to the other mobile terminal and information about the establishment completion, transmitted to the portable terminal, wherein the releasing means, after the command signal is transmitted, based on the profile of said mobile terminal To release the Ku cooperation.

The invention of claim 3 is a signal processing method of a cooperation apparatus that operates in cooperation with a portable terminal based on a wireless communication profile, and (a) a prohibition signal for instructing prohibition of output of acoustic information from a speaker. And (b) a command signal that terminates establishment of a call between the mobile terminal and another mobile terminal when the prohibition signal is acquired, and is transmitted from the mobile terminal to the other mobile terminal. that the said linkage device information about the completion of the establishment of the call, including information about the position of the vehicle is provided, and transmitting to the mobile terminal, after the command signal has been transmitted (c), the mobile terminal And releasing the cooperation based on the profile.

  According to the present invention, by canceling the cooperation between the cooperation device and the mobile terminal and ending the establishment of the call with the other mobile terminal, the voice connection is established even though the connection between the mobile terminals is established. It is possible to end a state where information cannot be transmitted and received, and to solve the problem of the other party. In addition, call charges can be reduced.

Further, according to the present invention, the other party can know that an emergency has occurred in the user of the vehicle by transmitting the reason for the end of establishment of the call to another portable terminal.
Further, according to the present invention, by transmitting information on the position of the vehicle, the other party of the call can request the medical institution or the like to rescue the vehicle user.

FIG. 1 is a diagram showing an outline of the emergency call system according to the first embodiment. FIG. 2 is a block diagram illustrating the configuration of the cooperation apparatus. FIG. 3 is a block diagram showing the configuration of the mobile terminal. FIG. 4 is a block diagram showing the configuration of the unit. FIG. 5 is a block diagram illustrating a configuration of the communication apparatus. FIG. 6 is a diagram for explaining processing for establishing a connection in the cooperation system. FIG. 7 is a diagram illustrating input / output of audio signals between the mobile terminal and another mobile terminal after establishment of a wireless connection based on HFP. FIG. 8 is a diagram illustrating a connection release process in the cooperation system. FIG. 9 is a diagram for explaining transmission / reception of signals of each device when the unit receives an airbag operation signal from the ECU. FIG. 10 is a diagram for explaining transmission / reception of signals of each device when the unit receives an airbag operation signal from the ECU.

  Embodiments of the present invention will be described below with reference to the drawings.

<1. First Embodiment>
<1-1. System overview>
FIG. 1 is a diagram showing an overview of an emergency call system 100 according to the first embodiment. The emergency call system 100 includes a linkage device 2 and an e-call unit 4 (hereinafter referred to as “unit 4”) provided in the vehicle interior of the vehicle 1, a portable terminal 3 brought into the vehicle interior of the vehicle 1, The ECU 5 includes an ECU 5 that controls an airbag or the like provided at the front of the vehicle body of the vehicle 1 and a communication device 6 of the center 16 that performs wireless communication with the unit 4.

  The cooperation device 2 is an electronic device provided in the vehicle interior of the vehicle 1. The cooperation device 2 operates in cooperation with the mobile terminal 3 such as a smartphone, and reproduces a navigation function that guides a route to a destination or a music piece. This is display audio that performs various functions such as an audio function. The cooperation device 2 is connected to the portable terminal 3 by, for example, wireless communication (for example, Bluetooth (registered trademark)) (hereinafter referred to as “BT”), and operates in cooperation with the portable terminal 3 based on the set profile. The profile is, for example, HFP or AVRCP (Audio / Video Remote Control Profile). As described above, the cooperation device 2 and the mobile terminal 3 operate as the cooperation system 200.

  The portable terminal 3 is a portable electronic device possessed by a user, and is, for example, a smartphone, a tablet, a mobile phone, a PDA (Personal Digital Assistant) or the like.

  The unit 4 is an electronic device provided in the passenger compartment of the vehicle 1 and is a device that performs wireless communication with the communication device 6 of the center 16 when an emergency such as an accident occurs in the vehicle 1. The unit 4 is electrically connected to the linkage device 2 and the ECU 5, and receives an airbag operation signal indicating that the airbag has been deployed from the ECU 5. When the unit 4 receives the airbag activation signal, the unit 4 connects a communication line with the communication device 6 and transmits emergency information indicating the state of the vehicle 1 to the communication device 6 through a line such as 4G. A call with (center 16) is established.

  The ECU 5 is a control device that controls the vehicle, for example, a vehicle control device that controls an airbag. The ECU 5 acquires the deceleration of the vehicle 1 from a front sensor (not shown) provided at the front part of the vehicle 1. When the deceleration exceeds a predetermined threshold, the ECU 5 determines that an accident has occurred, and deploys an airbag (not shown) that absorbs an impact on the user who is a passenger of the vehicle 1. The ECU 5 transmits an airbag activation signal to the unit 4 when the airbag is deployed.

  The communication device 6 is a device that transmits and receives data to and from the unit 4. Specifically, the communication device 6 connects a communication line with the unit 4, receives emergency information transmitted from the unit 4, and establishes a call with the unit 4. The communication device 6 is provided in the center 16. The operator of the center 16 contacts the medical institution etc. from the contents of the call with the vehicle occupant and supports the rescue operation of the user of the vehicle 1.

  Next, detailed configurations of the cooperation device 2, the portable terminal 3, the unit 4, and the communication device 6 included in the emergency call system 100 will be described.

<1-2. Configuration of Cooperation Device and Mobile Terminal>
FIG. 2 is a block diagram illustrating a configuration of the cooperation device 2. The cooperation device 2 mainly includes a display unit 21, an operation unit 22, a first communication unit 23, a GPS signal reception unit 24, a unit connection unit 25, a memory 26, and a control unit 27. The linkage device 2 is electrically connected to the speaker 28. For example, the speakers 28 are provided on the left and right sides of the instrument panel in the vehicle 1.

  The display unit 21 displays an operation image of various functions of the cooperation device 2 or an operation image of various functions of the portable terminal 3 when the cooperation device 2 and the portable terminal 3 operate in cooperation. It is. As the display unit 21, for example, a liquid crystal display or an organic EL display is used.

  The operation unit 22 is an information input device including mechanical buttons and a touch panel. The user operates various functions of the cooperation apparatus 2 by operating the operation unit 22. Moreover, when the cooperation apparatus 2 and the portable terminal 3 operate | move in cooperation, operation, such as execution of a telephone call function of the portable terminal 3, cancellation, etc. becomes possible because the user of the vehicle 1 operates the operation part 22. FIG. .

  The first communication unit 23 is a BT communication device that complies with the standard specifications of IEEE802.15.1, and performs wireless communication with the mobile terminal 3 based on various profiles that standardize wireless communication procedures. Below, based on HFP which is one of the profiles of BT, the case where the cooperation apparatus 2 and the portable terminal 3 operate | move in cooperation is demonstrated to an example.

  The GPS (Global Positioning System) signal receiving unit 24 is a device that receives radio waves transmitted from GPS satellites. GPS is a system that measures the position of a vehicle based on radio waves from at least three or more GPS satellites that orbit the earth.

  The unit connection unit 25 is an interface used when the cooperation device 2 and the unit 4 are connected by wire. The cooperation apparatus 2 acquires a signal (for example, a mute instruction signal) output from the unit 4 via the unit connection unit 25.

  The memory 26 stores various programs to be calculated. This program is read by the control unit 27 and executed by the control unit 27 to perform various controls. Note that the memory 26 in the present embodiment is a nonvolatile semiconductor memory that can electrically read and write data and does not erase data even when the power is turned off. As the memory 26, for example, an EEPROM (Electrical Erasable Programmable Read-Only Memory) or a flash memory can be used. However, other storage media may be used, and a hard disk drive provided with a magnetic disk may be used.

  The control unit 27 is a computer that controls each unit of the device, and is connected to the first communication unit 23, the GPS signal receiving unit 24, the unit connection unit 25, and the like included in the cooperation device 2, and is based on a program stored in the memory 26. Thus, each part of the cooperation device 2 and the overall operation are controlled.

  When the main control functions of the control unit 27 are expressed in terms of configuration, the control unit 27 includes a display control unit 27a, an acoustic control unit 27b, a communication control unit 27c, and a position detection unit 27d. The functions of the display control unit 27a, the acoustic control unit 27b, the communication control unit 27c, and the position detection unit 27d are realized by operations based on a computer program.

  The display control unit 27a generates an image to be displayed on the display unit 21 of the cooperation apparatus 2, and causes the display unit 21 to display the generated image. The display control unit 27a is, for example, a connection setting image based on the HFP between the cooperation device 2 and the mobile terminal 3, or a mobile terminal owned by a user outside the vehicle compartment of the vehicle 1 (hereinafter referred to as “another mobile terminal”). An operation image related to a call with is displayed on the display unit 21.

  The acoustic control unit 27b controls the output of acoustic signals including audio signals. Since this acoustic signal is output from the speaker 28, it can be said that the acoustic control unit 27b controls the output of the speaker 28. The acoustic control unit 27b transmits, for example, an acoustic signal of a music piece reproduced by the cooperation device 2 to the speaker 28. The speaker 28 outputs the transmitted acoustic signal. In addition, the acoustic control unit 27b transmits the audio signal transmitted from the other portable terminal to the speaker 28 when a call between the portable terminal 3 operating in cooperation with the cooperation device 2 and the other portable terminal is established. Send. The speaker 28 outputs the transmitted audio signal. The audio signal transmitted from another portable terminal is transmitted to the portable terminal 3 through the telephone line, and is transmitted from the portable terminal 3 to the cooperation apparatus 2 based on the HFP.

  Note that the acoustic control unit 27b stops the transmission of the acoustic signal to the speaker 28 when the mute instruction signal is transmitted from the unit 4 to the linkage apparatus 2. As a result, the speaker 28 is in a state where the output of the sound signal is prohibited without outputting the sound signal.

  The communication control unit 27 c establishes a connection with the mobile terminal 3 based on HFP using the first communication unit 23. Thereby, the cooperation apparatus 2 operates in cooperation with the mobile terminal 3. The communication control unit 27c releases the connection with the mobile terminal 3 based on HFP. Thereby, the cooperation apparatus 2 stops the cooperation operation with the portable terminal 3. The establishment and release of connection based on such HFP will be described in detail later.

  The position detection unit 27d detects the position (latitude, longitude, altitude, etc.) information of the cooperation device 2 based on the signal received from the GPS by the GPS signal reception unit 24. In other words, the position detection unit 27d detects the position information of the vehicle 1.

  Next, the configuration of the mobile terminal 3 will be described. FIG. 3 is a block diagram illustrating a configuration of the mobile terminal 3. The mobile terminal 3 mainly includes a display unit 31, an operation unit 32, a first communication unit 33, a GPS signal reception unit 34, a memory 35, a second communication unit 36, a speaker 37, a microphone 38, and a control unit 39.

  The display unit 31 is a display device that displays operation images for various functions of the mobile terminal 3. For example, a liquid crystal display or an organic EL display is used as the display unit 31.

  The operation unit 32 is an information input device including mechanical buttons and a touch panel. The user of the mobile terminal 3 operates various functions of the mobile terminal 3 by operating the operation unit 32.

  The first communication unit 33 is a BT communication device that establishes a connection based on HFP with the first communication unit 23 of the cooperation device 2. The GPS signal receiving unit 34 is a device that receives radio waves transmitted from GPS satellites. The memory 35 stores various programs to be calculated. This program is read by the control unit 39 and executed by the control unit 39 for performing various controls.

  The second communication unit 36 is a communication device that transmits and receives audio signals, SMS (short message service) text data, and the like between the mobile terminal 3 and other mobile terminals via a line according to standard specifications such as 4G. . Thus, the 2nd communication part 36 performs radio | wireless communication with another portable terminal.

  The speaker 37 is an output device that outputs an acoustic signal of the mobile terminal 3 under the control of the control unit 39 of the mobile terminal 3, and the microphone 38 is an input device to which the voice of the user of the mobile terminal 3 is input.

  The control unit 39 is a computer that controls each unit of the mobile terminal 3, is connected to the second communication unit 36 and the like included in the mobile terminal 3, and based on the program stored in the memory 35, Control the behavior.

  When the main control functions of the control unit 39 are expressed in terms of configuration, the control unit 39 includes a display control unit 39a, an acoustic control unit 39b, a communication control unit 39c, and a position detection unit 39d. The display control unit 39a, the acoustic control unit 39b, the communication control unit 39c, and the position detection unit 39d have their functional configurations realized by operations based on computer programs.

  The display control unit 39 a generates an image to be displayed on the display unit 31 of the mobile terminal 3 and performs control to display the generated image on the display unit 31. The display control unit 39a displays, for example, an operation image related to a call with another mobile terminal, an image indicating that a call with another mobile terminal is established, and the like.

  The sound control unit 39 b controls the output of the sound signal from the speaker 37. For example, the acoustic control unit 39 b transmits the acoustic signal of the music reproduced by the mobile terminal 3 to the speaker 37. The speaker 37 outputs the transmitted acoustic signal. When a call with another mobile terminal is established, an audio signal transmitted from the other mobile terminal is transmitted to the speaker 37. The speaker 37 outputs the transmitted audio signal.

  Note that the sound control unit 39b outputs audio from the speaker 37 of the mobile terminal 3 and outputs audio from the microphone 38 when the cooperation device 2 and the mobile terminal 3 transmit and receive audio signals based on HFP. Prohibit input. When a connection based on HFP is established, a voice signal transmitted from another portable terminal is output from the speaker 37 of the cooperation device 2 in order to realize a hands-free call for the user in the vehicle interior, This is because the voice uttered by the user in the room is input to a microphone (a microphone 48 shown in FIG. 4 described later) electrically connected to the unit 4.

  The communication control unit 39c performs wireless communication with other portable terminals using the second communication unit 36. The position detection unit 39d detects the position (latitude, longitude, altitude, etc.) information of the mobile terminal 3 in the vehicle interior based on the signal received from the GPS by the GPS signal reception unit 34. In other words, the position detection unit 39d detects the position information of the vehicle 1.

<1-3. Configuration of e-call unit and communication device>
FIG. 4 is a block diagram showing the configuration of the unit 4. The unit 4 mainly includes an ECU connection unit 41, a cooperative connection unit 42, a GPS signal reception unit 43, a second communication unit 44, a memory 45, and a control unit 46. The unit 4, the speaker 47, and the microphone 48 are electrically connected. For example, the speakers 47 are provided on both sides of the front door in the vehicle interior of the vehicle 1, and the microphone 48 is provided in the vicinity of the A pillar in the vehicle interior or in the vicinity of the sun visor.

  The ECU connection unit 41 is an interface used when the unit 4 and the ECU 5 are connected by wire. When the airbag is deployed due to an impact (deceleration) when the vehicle 1 collides with another vehicle or the like, the unit 4 receives an airbag activation signal via the ECU connection portion 41.

  The link connection unit 42 is an interface used when the unit 4 and the link device 2 are connected by wire. When the unit 4 receives the airbag operation signal, the unit 4 transmits a mute instruction signal via the cooperative connection unit 42.

  The GPS signal receiving unit 43 is a device that receives radio waves transmitted from GPS satellites. The second communication unit 44 is a communication device that transmits and receives audio signals, text data, and the like between the unit 4 and the communication device 6 through a line according to standard specifications such as 4G.

  The memory 45 stores various programs to be calculated. This program is read by the control unit 46, and is executed by the control unit 46 to perform various controls.

  The control unit 46 is a computer that controls each unit of the device, and is connected to the ECU connection unit 41, the linkage connection unit 42, and the like included in the unit 4, and based on a program stored in the memory 45, Control the behavior.

  When the main control functions of the control unit 46 are expressed in terms of configuration, the control unit 46 includes an acoustic control unit 46a, a position detection unit 46b, and a communication control unit 46c. The functions of the acoustic control unit 46a, the position detection unit 46b, and the communication control unit 46c are realized by operations based on a computer program.

  The sound control unit 46 a transmits a mute instruction signal to the linkage device 2 when the unit 4 receives the airbag operation signal. The acoustic control unit 46 a sets a transmission path for the acoustic signal output from the speaker 47 and the audio signal input to the microphone 48. Such control of the acoustic control unit 46a will be described in detail later.

  The position detector 46b detects the position (latitude, longitude, altitude, etc.) information of the unit 4 based on the received signal received from the GPS by the GPS signal receiver 43. In other words, the position detector 46b detects the position information of the vehicle 1.

  The communication control unit 46 c performs wireless communication with the communication device 6 of the center 16 using the second communication unit 44. In this wireless communication, transmission of emergency information from the unit 4 to the communication device 6, transmission / reception of audio signals based on conversation between the user of the vehicle 1 and the operator of the center 16, and the like are performed.

  FIG. 5 is a block diagram illustrating a configuration of the communication device 6. The communication device 6 mainly includes a second communication unit 61, a memory 62, and a control unit 63.

  The second communication unit 61 is a communication device that transmits and receives voice signals, text data, and the like between the communication device 6 and the unit 4 through a line according to standard specifications such as 4G.

  The memory 62 stores various programs to be calculated. This program is read by the control unit 63 and executed by the control unit 63 to perform various controls.

  The control unit 63 is a computer that controls each unit of the device, is connected to the second communication unit 61 and the like included in the communication device 6, and controls each unit of the communication device 6 and the overall operation based on a program stored in the memory 62. Control.

  If the main control functions of the control unit 63 are expressed in terms of configuration, the control unit 63 includes a communication control unit 63a. The function of the communication control unit 63a is realized by an operation based on a computer program.

  The communication control unit 63 a performs wireless communication with the unit 4 using the second communication unit 61. In this wireless communication, emergency information is received from the unit 4 to the communication device 6, voice signals are transmitted and received based on a conversation between the user of the vehicle 1 and the operator of the center 16.

<2. Processing flowchart>
<2-1. Establishing a connection between the cooperative device and mobile terminal>
Next, connection establishment processing in the cooperation system 200 of the cooperation device 2 and the portable terminal 3 will be described with reference to FIG. This process is repeatedly executed with the power of the cooperation apparatus 2 and the portable terminal 3 turned on. When the cooperation device 2 and the portable terminal 3 are initially in a power-on state, and the BT connection setting of the portable terminal 3 is turned on by a user operation (Yes in step S101), the portable terminal 3 is the portable terminal 3 BT connection information including the unique ID and information indicating the type of profile owned by the mobile terminal 3 is output to the periphery of the mobile terminal 3 (step S102). For example, the mobile terminal 3 outputs BT connection information in a range of a radius of 10 m centered on the position of the mobile terminal 3. The portable terminal 3 transmits the BT connection information with power that allows the cooperation device 2 existing within the range to receive the BT connection information. If the BT connection setting of the mobile terminal 3 is not in the on state (No in step S101), the process ends because no BT connection information is output. Thereafter, when the BT connection setting is turned on by the user's operation, the process of step S102 is executed.

  The cooperation device 2 searches whether there is another device capable of wireless connection based on the HFP by a user operation (step S103). Specifically, it is determined whether the communication control unit 27c of the cooperation apparatus 2 has acquired BT connection information from another apparatus having the same profile as the profile (HFP or the like) owned by the cooperation apparatus 2 (step) S104).

  If the same profile as the profile (for example, HFP or AVRCP) owned by the cooperation device 2 exists in the BT connection information of the mobile terminal 3, the cooperation device 2 has a candidate for BT connection (Yes in step S104). Based on the acquired BT connection information, information on the ID of the mobile terminal 3 and the type of profile owned is displayed on the display unit 21 (step S105).

  Then, when the user selects a BT connection target by an operation using the operation unit 22 (Yes in step S106), the cooperation device 2 transmits a connection request signal to the connection target device (for example, the portable terminal 3) (step S106). S107).

  The mobile terminal 3 to be connected receives the connection request signal (step S108), and establishes a connection based on the HFP with the cooperation apparatus 2 (steps S109 and S110). When the connection is established in this way, the cooperation device 2 and the portable terminal 3 operate in cooperation to transmit and receive data.

  In addition, by cooperation between the cooperation device 2 and the mobile terminal 3, phone book data owned by the mobile terminal 3 is transmitted to the cooperation device 2 based on PBAP (Phone Book Access Profile). Thereby, the telephone number of another portable terminal etc. are displayed on the display part 21 of the cooperation apparatus 2, and the user in a vehicle interior can establish the telephone call with another portable terminal by operation using the operation part 22. FIG.

  In the above-described processing in step S104, when there is no other device that has the same profile as the profile owned by the cooperation device 2 and there is no candidate that can be connected to BT (No in step S104), a predetermined process is performed. The connection candidate is searched continuously for a period of time, and the process ends when a predetermined time has elapsed.

  Further, when the user does not select the connection target (No in step S106), the state in which the selection from the user can be accepted is continued for a predetermined time, and the process ends when the predetermined time has elapsed.

  Next, audio signal input / output between the mobile terminal 3 and another mobile terminal after establishment of a wireless connection based on HFP will be described with reference to FIG.

  The vehicle 1 in FIG. 7 is mainly provided with a linkage device 2, a portable terminal 3, a unit 4, and an ECU 5. The cooperation device 2 has established a connection based on the HFP with the portable terminal 3 and transmits / receives an audio signal or the like through the line CM1. In addition, the mobile terminal 3 transmits and receives audio signals and the like through the other mobile terminal 10 and the line CM2 such as 4G.

  Thus, when the user in the vehicle interior of the vehicle 1 is hands-free and is making a call with a user outside the vehicle interior of another portable terminal 10, the voice uttered by the user in the vehicle interior is input to the microphone 48. It is transmitted to unit 4 as signal S1. The unit 4 transmits the received audio signal S1 to the cooperation device 2. The cooperation device 2 transmits the received audio signal S1 to the mobile terminal 3 through the line CM1. Then, the mobile terminal 3 transmits the received audio signal S1 to the other mobile terminal 10 through the line CM2. Through the transmission / reception of such audio signals, the voice uttered by the user in the passenger compartment is output from a speaker (not shown) of another mobile terminal 10.

  On the other hand, the voice uttered by the user of the other mobile terminal 10 is input to the microphone (not shown) of the other mobile terminal 10 and transmitted to the mobile terminal 3 as the audio signal S2 through the line CM2. The portable terminal 3 transmits the received audio signal S2 to the cooperation device 2 through the line CM1. The cooperation apparatus 2 transmits the received audio signal S2 to the speaker 28. Through the transmission / reception of such audio signals, the sound produced by the user of the other portable terminal 10 is output from the speaker 28. Thereby, the user in the vehicle compartment can talk with the user of the other mobile terminal 10 in a hands-free state without having the mobile terminal 3 in his / her hand.

<2-2. Canceling the connection between the cooperative device and mobile terminal>
Next, connection release processing in the cooperation system 200 of the cooperation device 2 and the portable terminal 3 will be described with reference to FIG. This process is repeatedly executed when the cooperation device 2, the portable terminal, and the unit 4 are powered on. First, when the cooperation device 2, the portable terminal 3, and the unit 4 are in a power-on state, and when the unit 4 receives an airbag operation signal from the ECU 5 (Yes in step S201), the acoustic control unit 46a of the unit 4 is Then, a mute instruction signal is transmitted to the cooperation apparatus 2 (step S202). If the unit 4 has not received an airbag activation signal from the ECU 5 (No in step S201), the unit 4 ends the process, and thereafter, when the unit 4 receives an airbag instruction signal, the process of step S202 is performed. Next, the communication control unit 46c of the unit 4 transmits emergency information including information indicating that the airbag is deployed and the position information of the vehicle 1 to the communication device 6 through a line such as 4G ( Step S203).

  The acoustic control unit 46a changes the output destination of the audio signal S1 input from the microphone 48 from the cooperation device 2 to the communication device 6 (step S204). With this change, the audio signal S1 is transmitted to the communication device 6 through a line such as 4G.

  The acoustic control unit 27b of the cooperation device 2 acquires the mute instruction signal transmitted by the unit 4 in the process of step S202 (step S205), and executes the mute of the audio signal S2 (step S206). That is, the acoustic control unit 27b prohibits transmission of the audio signal S2 to the speaker 28.

  Then, when the mobile terminal 3 and another mobile terminal 10 have established a call through a line such as 4G (Yes in step S207), the cooperation device 2 transmits the call end information to the mobile terminal 3 through the line CM1 based on HFP. Is transmitted (step S208). The call end information is information indicating that the mobile terminal 3 ends a call with another mobile terminal 10 when an emergency occurs in the vehicle, for example. The call end information is stored in the memory 26 in advance, and is read from the memory 26 when the cooperation device 2 acquires a mute instruction signal.

  The mobile terminal 3 receives the call end information from the cooperation device 2, and transmits the received call end information to the other mobile terminal 10 (step S209). The user of the other mobile terminal 10 that has confirmed the call end information transmitted to the other mobile terminal 10 can grasp that the user of the vehicle 1 is in an urgent state and will not be confused even if the call ends. . Moreover, the cooperation apparatus 2 may transmit the position information of the vehicle 1 to the portable terminal 3 together with the call end information, and may transmit the position information of the vehicle 1 from the portable terminal 3 to another portable terminal. Thereby, the user of the other portable terminal 10 can request the medical institution or the like to rescue the user of the vehicle 1. Note that the position information of the vehicle 1 may be detected by the position detection unit 27d of the cooperation device 2 or the position detection unit 39d of the portable terminal 3.

  After transmitting the call end information of the portable terminal 3, the cooperation device 2 transmits a release / end command signal (hereinafter, “instructions for releasing the connection of the HFP line CM1 and the call end through the line CM2 such as 4G”). Command signal ") is transmitted to the portable terminal 3 (step S210). The portable terminal 3 receives the command signal transmitted from the cooperation apparatus 2 (step S211).

  Thereby, the cooperation based on HFP between the cooperation apparatus 2 and the portable terminal 3 is released, and the BT connection between the cooperation apparatus 2 and the portable terminal 3 is also released along with the release of the cooperation (steps S212 and S213).

  The cooperation device 2 and the mobile terminal 3 are released from cooperation by transmitting a response signal from the mobile terminal 3 to the cooperation device 2 after the cooperation device 2 transmits a command signal to the mobile terminal 3. It may be executed after receiving a signal.

  Then, the mobile terminal 3 ends the call with the other mobile terminal 10 based on the command signal (step S214). Thus, although the cooperation apparatus 2 and the portable terminal 3 cancel cooperation and complete | finish establishment of the telephone call with the other portable terminal 10, although the connection of a mutual portable terminal is established, It is possible to end the state in which voice signals cannot be transmitted and received, and to eliminate the confusion of the other party of the call. Call charges can be reduced.

  Returning to the process of step S207, if a call between the mobile terminal 3 and another mobile terminal 10 has not been established (No in step S207), the cooperation apparatus 2 ends the process. Note that even when a call between the mobile terminal 3 and another mobile terminal 10 is not established, the cooperation based on the HFP between the cooperation device 2 and the mobile terminal 3 may be canceled.

  Further, after receiving the mute instruction signal in step S205, the cooperation device 2 transmits call end information to the mobile terminal 3 (step S208), and transmits a command signal to the mobile terminal 3 (step S210). The unit 27a may display on the display unit 21 an image indicating that each process according to the transmission of the command signal is being performed. The display control unit 27a may display an image corresponding to a function (for example, an audio function) selected by the user on the display unit 21 even if each process according to the transmission of the command signal is performed. .

  Next, signal transmission / reception of each device when the unit 4 receives an airbag operation signal from the ECU 5 will be described with reference to FIGS. 9 and 10. When the unit 4 shown in FIG. 9 receives the airbag activation signal WS transmitted from the ECU 5, the unit 4 transmits a mute instruction signal MS to the linkage device 2. Further, the unit 4 establishes a line CM 3 such as 4G with the communication device 6 of the center 16 and transmits emergency information ES to the communication device 6.

  The cooperation device 2 receives the mute instruction signal MS transmitted from the unit 4 and prohibits the transmission of the audio signal S2 to the speaker 28. Therefore, the audio signal S2 is transmitted from the other portable terminal 10 to the portable terminal 3 through the line CM2, and is transmitted from the portable terminal 3 to the linkage apparatus 2 through the line CM1, but is not output from the speaker 28.

  Further, when the cooperation apparatus 2 receives the mute instruction signal MS, the cooperation apparatus 2 transmits to the portable terminal 3 a command signal DS instructing disconnection of the line CM1 and termination of the call through the line CM2.

  As a result, as shown in FIG. 10, the connection of the line CM1 between the cooperation apparatus 2 and the mobile terminal 3 is released. Further, the connection of the line CM2 between the mobile terminal 3 and the other mobile terminal 10 is also released, and the call between the user of the mobile terminal 3 and the user of the other mobile terminal 10 ends.

  The audio signal S1 input to the microphone 48 is transmitted from the unit 4 to the communication device 6 through the line CM3. Further, the operator's voice signal S3 input to the microphone (not shown) of the center 16 is transmitted from the communication device 6 to the unit 4 through the line CM3, and is transmitted from the unit 4 to the speaker 47. As a result, the audio signal S3 is output from the speaker 47.

<3. Summary>
As described above, in the present embodiment, the communication device 2 in the vehicle interior of the vehicle 1 and the mobile terminal 3 in the vehicle interior are connected based on HFP, and a call with another mobile terminal 10 outside the vehicle interior is established. When the cooperation device 2 receives the mute instruction signal from the unit 4, the HFP connection with the portable terminal 3 is released. The cooperation apparatus 2 transmits a command signal for terminating the call with the other mobile terminal 10 to the mobile terminal 3 before releasing the HFP connection with the mobile terminal 3. Based on this command signal, the mobile terminal 3 ends the establishment of a call with another mobile terminal 10. As a result, it is possible to terminate the state in which the audio signal cannot be transmitted / received even though the connection between the portable terminals is established, and to solve the confusion of the other party of the call. Furthermore, call charges can be reduced.

  In addition, the cooperation apparatus 2 transmits call end information to the mobile terminal 3 before the HFP connection with the mobile terminal 3 is released. This call end information is transmitted from the mobile terminal 3 to the other mobile terminal 10, and the user of the other mobile terminal 10 can grasp that an emergency state has occurred in the user of the vehicle 1.

<4. Modification>
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made. Below, such a modification is demonstrated. All the embodiments including the embodiments described above and the embodiments described below can be appropriately combined.

  In the above embodiment, BT wireless communication has been described as an example. However, other than the BT wireless communication, any other communication method can be used as long as the wireless communication method can achieve the object of the invention described in the above embodiment. There may be.

  In the above embodiment, in establishing the connection between the cooperation device 2 and the portable terminal 3, the portable terminal 3 transmits BT connection information to the surroundings, the cooperation device 2 searches for BT connection candidates, and is selected by the user. We explained how to establish a connection between them. On the other hand, it is good also as a structure which the cooperation apparatus 2 transmits BT connection information to the circumference | surroundings, and the portable terminal 3 searches a BT connection candidate.

  In the above-described embodiment, the case where the BT connection is also released when the connection based on the HFP between the cooperation apparatus 2 and the mobile terminal 3 is released has been described. On the other hand, when the cooperation device 2 and the mobile terminal 3 are BT-connected based on a plurality of profiles (for example, HFP and AVRCP), the BT connection based on the AVPCP continues even if the connection of only the HFP is canceled You may make it do.

  In the above embodiment, the command signal DS is transmitted from the cooperation device 2 to the mobile terminal 3 when the cooperation device 2 receives the mute instruction signal. On the other hand, when the mobile terminal 3 automatically terminates the call with the other mobile terminal 10 when the mobile terminal 3 releases the connection based on the HFP, the 4G included in the command signal DS or the like. There is no need to send a signal to the mobile terminal 3 to instruct the end of the call through the line CM2.

  Moreover, in the said embodiment, the cooperation apparatus 2 transmits call completion information to the portable terminal 3, when the mute instruction signal MS is received. And it demonstrated that the portable terminal 3 transmits the telephone call end information received from the cooperation apparatus 2 to the other portable terminal 10. On the other hand, when the cooperation device 2 receives the mute instruction signal MS, the cooperation device 2 transmits a call end information transmission instruction signal to the mobile terminal 3, and the call end information stored in advance in the memory 35 of the mobile terminal 3. You may make it transmit to the other portable terminal 10. FIG.

  Moreover, in the said embodiment, emergency information was demonstrated as the information which shows that the airbag was expand | deployed, and the positional information on the vehicle 1. FIG. On the other hand, the emergency information may be information other than the above as long as it is information that can be used when the passenger of the vehicle 1 is rescued. For example, information indicating the number of people on the vehicle 1 may be used.

  Moreover, in the said embodiment, unit 4 demonstrated outputting a mute instruction | indication signal with respect to the cooperation apparatus 2 after receiving the airbag operation signal from ECU5. On the other hand, the operation unit is provided in the unit 4, and the user operates the operation unit to output a mute instruction signal to the linkage device 2 even when the airbag activation signal is not received. You may do it.

  Moreover, in the said embodiment, the unit 4, the cooperation apparatus 2, and ECU5 are wired-connected. Further, the unit 4, the speaker 47, and the microphone 48 have been described as being connected by wire. On the other hand, devices connected by wire may be wirelessly connected.

  In the above embodiment, transmission / reception of each signal has been described. For example, in step S107 of FIG. 6, it has been described that the cooperation apparatus 2 transmits an HFP connection request signal, and in step S108, the mobile terminal 3 receives the connection request signal. On the other hand, in the transmission / reception of such a signal, if the transmitted signal is not received, the processing may be terminated.

  In the above-described embodiment, various functions have been described in terms of software by CPU arithmetic processing according to a program. However, some of these functions may be realized by an electrical hardware circuit. . Conversely, some of the functions realized by the hardware circuit may be realized by software.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Cooperation apparatus 3 Portable terminal 4 e-call unit 5 ECU
6 Communication device

Claims (3)

A cooperation system in which a cooperation device and a portable terminal are connected by wireless communication, and based on the wireless communication profile, the cooperation device and the portable terminal operate in cooperation with each other,
When the cooperation device acquires a prohibition signal instructing prohibition of output of acoustic information from a speaker, the cooperation device cancels cooperation based on the profile with the mobile terminal,
The mobile terminal is provided with the cooperation device before terminating the establishment of a call with another mobile terminal after releasing the cooperation with the cooperation device and before completing the establishment of a call with the other mobile terminal. Transmitting information relating to the end of establishment of the call including information relating to the position of the vehicle to the other portable terminal ;
Collaboration system characterized by
. A cooperation device that operates in cooperation with a mobile terminal based on a wireless communication profile,
Obtaining means for obtaining a prohibition signal instructing prohibition of output of acoustic information from the speaker;
A communication means for transmitting to the portable terminal a command signal for terminating establishment of a call between the portable terminal and another portable terminal;
Release means for releasing cooperation based on the profile with the mobile terminal;
With
The communication unit includes the command signal and information on the position of the vehicle provided with the cooperation device transmitted from the mobile terminal to the other mobile terminal when the acquisition unit acquires the prohibition signal. Sending information about the end of establishment of the call to the mobile terminal ;
The releasing means cancels the cooperation based on the profile with the mobile terminal after the command signal is transmitted;
A cooperation device characterized by A signal processing method of a cooperative device that operates in cooperation with a mobile terminal based on a wireless communication profile,
(A) obtaining a prohibition signal instructing prohibition of output of acoustic information from the speaker;
(B) When the prohibition signal is acquired, a command signal for terminating establishment of a call between the mobile terminal and another mobile terminal, and the cooperation device transmitted from the mobile terminal to the other mobile terminal Transmitting information relating to the end of establishment of the call including information relating to the position of the provided vehicle to the mobile terminal;
(C) releasing the cooperation based on the profile with the mobile terminal after the command signal is transmitted;
Providing
A signal processing method characterized by the above.

Images