JP5136595B2 - Wireless terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To control whether telephone call is continued in response to a request from a user when link loss occurs. <P>SOLUTION: A wireless communication terminal 10 connects a line with a partner via a communication network 12, connects with a vehicle mounted device 12 by a short range wireless communication, and enables the vehicle mounted device 12 to perform a voice communication by a handsfree function. The wireless communication terminal 10 maintains connection with the communication network 14 by a wireless communication unit 21 when a continuation request of the telephone call is input via the communication network 14, for example, by an input operation to an input unit 25 before a decision is made that predetermined time is elapsed after disconnect is detected if the disconnect of a communication link established by the short range wireless communication therebetween with the vehicle mounted device 12 is detected. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a wireless terminal device that is connected to a telephone network and is connected to another device by short-range wireless communication.

  A mobile phone (wireless terminal device) capable of short-range wireless communication using Bluetooth (registered trademark) technology functions as a server terminal, and can be used for various devices such as an in-vehicle device and a personal computer. Can provide services. For example, a mobile phone can provide a hands-free service to an in-vehicle device such as a car navigation system. In the in-vehicle device, by receiving the hands-free service, the mobile phone can make a call with the other party connected via the call network via the mobile phone.

  This type of mobile phone executes processing such as reconnection to the in-vehicle device or disconnection of a call during a call when a communication link with the in-vehicle device is abnormally disconnected (link loss).

  For example, in Non-Patent Document 1, as a recommendation for service level connection (page 15), a link loss occurs in the Service Level Connection between “Cellular Phone (mobile phone) and Car Equipment (vehicle equipment)” Car Equipment is shown to perform Service Level Connection reconnection.

  Also, in Non-Patent Document 1, “4.6 Recommendations for Abnormal Sequences (page 18)” indicates that when a link loss of Serevice Level Connection is detected, Cellular Phone immediately disconnects the call and maintains it for a certain period of time. Three implementation methods are shown: disconnecting and maintaining a call in progress when this time elapses. When a call during a call is maintained, it is indicated that when a new Serevice Level Connection is formed between the Cellular Phone and the Car Equipment, the call during the call is transferred from the Cellular Phone to the Car Equipment.

  Also, “6.3.1. Service level connection loss during an ongoing call” (page 87) indicates that a call is released after a certain time has elapsed after a link loss has occurred.

“MCPC TR-00x Ver.1.0 HANDS FREE PROFILE Technical Reference”, Ver.1.0, December 25, 2003, p.15, p.87

  In the technique disclosed in Non-Patent Document 1 described above, when a link loss is detected, the mobile phone immediately disconnects the call in progress and maintains the call for a certain period of time, and disconnects or maintains the call in progress when this time elapses. One of the functions will be implemented. That is, when a link loss occurs between the mobile phone and the in-vehicle device, connection control with the telephone network by the mobile phone is executed regardless of the user's intention.

  The present invention has been made paying attention to the above circumstances, and its purpose is to control whether or not to continue a call in response to a request from a user when a link loss occurs. It is to provide a wireless terminal device.

  In order to achieve the above object, the present invention provides a wireless terminal device that performs wireless communication with a base station accommodated in a telephone network and is connected to another device by short-range wireless communication using Bluetooth. A short-range wireless communication means for establishing a communication link by means of, a hands-free function based on HFP (Hands Free Profile), a hands-free control means for controlling a hands-free service for the other devices, and the hands-free Disconnection detection means for detecting that the communication link established by the short-range wireless communication with the other device has occurred when providing a hands-free service to the other device by the control means Determining means for determining whether a predetermined time has elapsed since the cutting was detected by the cutting detecting means; and Until a determination is made that a certain time has passed, a continuation request input means for inputting a call continuation request via the call network, and a call continuation request input by the continuation request input means And a call control means for maintaining a connection with the call network.

  According to the present invention, when disconnection of a communication link established by short-range wireless communication with another device is detected, until it is determined that a certain time has elapsed since the disconnection was detected. In the meantime, if a call continuation request via the telephone network is input, the connection is maintained, and if the continuation request is not input, the connection is disconnected, so that the user intends to control the call when a link loss occurs. Can be executed.

The block diagram which shows the structure of the system in this embodiment. The flowchart for demonstrating the telephone call control method at the time of the link loss in this embodiment. The figure which shows the sequence at the time of link loss generation | occurrence | production of the radio | wireless communication terminal 10 and the vehicle equipment 12 in this embodiment. The figure which shows the sequence at the time of link loss generation | occurrence | production of the radio | wireless communication terminal 10 and the vehicle equipment 12 in this embodiment.

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

FIG. 1 is a block diagram showing a configuration of a system in the present embodiment. In FIG. 1, for example, a wireless communication terminal 10 configured as a mobile phone operates as a server terminal that provides a service. For example, an in-vehicle device 12 capable of wireless communication with the wireless communication terminal 10 is connected to the wireless communication terminal 10. To provide service. The in-vehicle device 12 is configured as, for example, a car navigation system, calculates a current position using GPS (Global Positioning System), displays the current position on a map screen, and guides a route to a destination. It has a function.

  Examples of services provided by the wireless communication terminal 10 include a hands-free service and a data communication service. For example, by receiving a hands-free service, the in-vehicle device 12 uses a microphone and a speaker provided in its own device to wirelessly communicate with a partner connected via the telephone network by the wireless communication terminal 10. This can be done via the communication terminal 10.

  The wireless communication terminal 10 is configured as a mobile phone, for example, and has a function of performing wireless communication with a base station accommodated in the telephone network 14. The wireless communication terminal 10 has a function of performing short-range wireless communication with the in-vehicle device 12 according to, for example, the Bluetooth standard.

  As shown in FIG. 1, the wireless communication terminal 10 includes a control unit 20, a wireless communication unit 21, a hands-free control unit 22, a short-range wireless communication unit 23, a display unit 24, an input unit 25, a voice input unit 26, a voice An output unit 27 and an audio path switching unit 28 are provided.

  The control unit 20 includes a CPU, a ROM, a RAM, and the like, and the CPU controls each unit according to a control program and control data stored in the ROM. Control by the control unit 20 realizes voice communication and data communication via the communication network 14, communication with the in-vehicle device 12, provision of various services to other devices such as the in-vehicle device 12, and the like. For example, the control unit 20 controls the hands-free control unit 22 to provide a hands-free service to the in-vehicle device 12 via the short-range wireless communication unit 23.

  The hands-free control unit 22 controls a hands-free function based on, for example, HFP (Hands Free Profile) specifications (Bluetooth SIG), and controls calls from the in-vehicle device 12 connected via the short-range wireless communication unit 23. And control calls.

  The short-range wireless communication unit 23 controls short-range wireless communication according to, for example, Bluetooth technology.

  The wireless communication unit 21 communicates with a base station accommodated in the communication network 14 of the mobile communication system.

  The display unit 24 controls display on the display.

The input unit 25 controls input from buttons and keys by user operations.

The voice input unit 26 includes a microphone, an amplifier, a band pass filter, an A / D conversion circuit, and the like. The voice input unit 26 inputs a user's transmission voice and generates transmission voice data.

The audio output unit 27 includes an A / D conversion circuit, an amplifier, a speaker, and the like, and outputs a sound corresponding to the received audio data.

  The voice path switching unit 28 is connected to the communication network 14 by the wireless communication unit 21 and connected to the vehicle-mounted device 12 by the short-range wireless communication unit 23, and is connected between the vehicle-mounted device 12 and the communication network 14 (call partner). A route (voice path) to any one of a first route through which voice data is transmitted and received, and a second route through which voice data is transmitted and received between the voice input unit 26, the voice output unit 27, and the telephone network 14 Execute the control to switch between. The voice path switching unit 28 is when a link loss with the in-vehicle device 12 occurs. When a call continuation request is input within a certain time, the voice bus is switched from the first route to the second route.

  As shown in FIG. 1, the in-vehicle device 12 includes a control unit 30, a hands-free control unit 31, a short-range wireless communication unit 32, a navigation unit 33, a display unit 34, an input unit 35, a voice input unit 36, and a voice. An output unit 37 is provided.

  The control unit 30 includes a CPU, a ROM, a RAM, and the like, and the CPU controls the respective units according to a control program and control data stored in the ROM. Under the control of the control unit 30, a service from the car navigation system and the wireless communication terminal 10 is received to realize voice call, data communication, and the like. For example, the control unit 30 controls the hands-free control unit 31 to execute a hands-free call via the short-range wireless communication unit 32 (wireless communication terminal 10).

  The hands-free control unit 31 controls a hands-free function based on, for example, an HFP (Hands Free Profile) specification (Bluetooth SIG), and calls through the wireless communication terminal 10 connected via the short-range wireless communication unit 32 Control and control calls.

  The short-range wireless communication unit 32 controls short-range wireless communication according to, for example, Bluetooth technology.

  The navigation unit 33 calculates a current position using GPS, displays the current position on a map screen, and realizes a function of guiding a route to a destination.

  The display unit 34 controls display on the display.

  The input unit 35 controls input from buttons and keys by a user operation.

  The voice input unit 36 includes a microphone, an amplifier, a band pass filter, an A / D conversion circuit, and the like. The voice input for control using voice recognition for the navigation unit 33 or a user's function when using a hands-free function is used. The transmission voice data is input to generate the transmission voice data.

  The voice output unit 37 includes an A / D conversion circuit, an amplifier, a speaker, and the like, and uses a voice (route guidance voice or voice for providing various information) according to processing by the navigation unit 33 or a hands-free function. If it is, the voice corresponding to the voice data received from the wireless communication terminal 10 is loudly output.

  Next, a call control method at the time of link loss in this embodiment will be described with reference to the flowchart shown in FIG.

  3 and 4 are diagrams illustrating a sequence when a link loss occurs between the wireless communication terminal 10 and the in-vehicle device 12.

  For example, it is assumed that a user holding the wireless communication terminal 10 gets in a car on which the in-vehicle device 12 is mounted. Here, it is assumed that the short-range wireless communication unit 23 of the wireless communication terminal 10 is activated by the server and is waiting for a connection request from another device. Further, it is assumed that the in-vehicle device 12 is activated by the short-range wireless communication unit 32 and transmits a connection request.

  The wireless communication terminal 10 receives a connection request from the in-vehicle device 12 by the short-range wireless communication unit 23 and establishes a communication link with the in-vehicle device 12 by a predetermined procedure. When the communication link with the wireless communication terminal 10 is established, the in-vehicle device 12 designates the use of the hands-free service to the wireless communication terminal 10 through the short-range wireless communication unit 32.

  When receiving a hands-free service designation from the in-vehicle device 12 through the short-range wireless communication unit 23, the control unit 20 activates the hands-free control unit 22 and starts providing the hands-free service to the in-vehicle device 12.

  Here, it is assumed that the in-vehicle device 12 has received a call request for the other party by, for example, an operation on the input unit 35. The in-vehicle device 12 requests the wireless communication terminal 10 to make a call through the short-range wireless communication unit 32 by the hands-free control unit 31.

  In response to a request from the in-vehicle device 12, the wireless communication terminal 10 connects a line with a communication partner through the communication network 14 by the wireless communication unit 21 to make a call possible state.

  That is, when the wireless communication terminal 10 is connected to the other party via the communication network 14 by the wireless communication unit 21, the voice path switching unit 28 sets the voice path so that a voice call can be made in the in-vehicle device 12. Switch to the side.

  As a result, the in-vehicle device 12 inputs voice by the microphone mounted on the own device, transmits the voice to the other party via the wireless communication terminal 10, and receives voice from the other party via the wireless communication terminal 10. Then, it is possible to make a call by outputting from the speaker mounted on the own device.

  The control unit 20 of the wireless communication terminal 10 is in a state where a communication link is established with the in-vehicle device 12, and when the hands-free control unit 22 provides a hands-free service to the in-vehicle device 12 (calling) It is monitored whether or not a link loss (abnormal disconnection) has occurred (step A2).

  Here, for example, when the vehicle on which the in-vehicle device 12 is mounted is stopped and the power supply to the in-vehicle device 12 is interrupted, the operation of the short-range wireless communication unit 32 is stopped and the communication link with the wireless communication terminal 10 is established. Shall be disconnected.

  When the control unit 20 of the wireless communication terminal 10 detects a link loss with the in-vehicle device 12 (Yes in step A2), the control unit 20 starts a timer for measuring the passage of a certain time from the link loss, for example, the passage of 5 seconds. (Step A3). The wireless communication terminal 10 is configured to disconnect the call with the other party via the call network 14 by the wireless communication unit 21 when 5 seconds have passed since the link loss.

  The control unit 20 of the wireless communication terminal 10 performs output for notifying the user of abnormal disconnection in response to occurrence of a link loss with the in-vehicle device 12 (step A4). For example, the control unit 20 causes the audio output unit 27 to output a predetermined sound indicating abnormal disconnection, or causes the display unit 24 to display a warning message or the like. Further, when a vibrator that is driven when notifying the wireless communication terminal 10 of an incoming call or the like is provided, the vibrator may be driven to notify the user of abnormal disconnection by vibration. .

  In addition, when a call is made by hands-free using the in-vehicle device 12, the user also generates an abnormality when the voice of the other party is disconnected due to the disconnection of the communication link between the in-vehicle device 12 and the wireless communication terminal 10. Can know. However, as described above, the output for notifying the occurrence of abnormal disconnection from the wireless communication terminal 10 makes it possible to recognize the abnormal disconnect more clearly and in a short time, and to immediately perform the input operation of the call continuation request. ing.

  Here, it is assumed that the measurement of a certain time (for example, 5 seconds) is completed by the timer (step A6, Yes). In this case, the control unit 20 disconnects the line with the communication partner via the communication network 14 by the wireless communication unit 21 and ends the process (step A7).

  FIG. 3 shows a situation where a call continuation request is not input within a certain time from the user when the communication link is abnormally disconnected. As shown in FIG. 3, when a call continuation request is not input, the call is disconnected after maintaining the call for a certain time.

  On the other hand, it is assumed that the call continuation request is input by the user's input operation before the timer finishes measuring the fixed time (step A5, Yes). It is assumed that the call continuation request can be input by an input operation on a specific key of the input unit 25, for example. In this case, the control unit 20 switches the voice path with respect to the voice path switching unit 28 so that a voice call can be performed using the voice side, that is, the voice input unit 26 and the voice output unit 27. (Step A8).

  In addition, the control unit 20 maintains a call state with a call partner connected by the wireless communication unit 21 via the call network 14.

  FIG. 4 shows a situation when a call continuation request is input within a certain time from the user when the communication link is abnormally disconnected. As shown in FIG. 4, when a call continuation request is input, the voice path is switched to the own device side and the call with the other party connected via the call network 14 is continued.

  In this way, when a link loss with the in-vehicle device 12 occurs, the radio communication terminal 10 maintains a call state with the call partner when a call continuation request is input within a certain time. Switch the voice path to your own side. Therefore, the user can continue the call using the wireless communication terminal 10 instead of the in-vehicle device 12.

  In the above description, it is described that a call continuation request can be instructed by an input operation on the input unit 25 of the wireless communication terminal 10, but the call continuation request is input using other input methods. Also good.

  For example, in the above description, the input is performed by operating a specific key of the input unit 25. However, in the input of a call continuation request when a link loss occurs, any key can be operated by inputting the call continuation request. You may make it discriminate | determine that there exists. That is, by not specifying the operation key, it is possible to input a call continuation request easily and reliably in a short time regardless of the state of the wireless communication terminal 10.

  Further, a voice recognition function may be provided in the control unit 20 so that a call continuation request can be input by inputting a predetermined keyword by voice within a predetermined time. For example, voice data is input from the voice input unit 26 by uttering “continuation of call” within a predetermined time, and voice recognition processing is executed using voice recognition data registered in advance for the voice data. When the voice of the keyword “call continuation” registered in advance is recognized by the voice recognition process, the control unit 20 determines that the call continuation request is input. In this case, when the link loss occurs, the control unit 20 immediately switches the voice path to the own device side by the voice path switching unit 28 so that voice input from the voice input unit 26 can be performed. To do. By making it possible to input a call continuation request by voice input, it is possible to easily input a call continuation request in a short time even in a situation where manual operation cannot be performed on the wireless communication terminal 10.

  Alternatively, when the wireless communication terminal 10 has a shape that allows two housings to be connected by a hinge mechanism and the two housings can be folded from an open state to a closed state, a state in which a voice call is normally made ( The call continuation request may be input by being in the open state. The hinge mechanism is provided with detection means (switches, sensors, etc.) for detecting the open / closed state. After the link loss has occurred, the control unit 20 monitors the detection state by the detection means and is brought into the open state. By determining this, a call continuation request is input.

  Furthermore, instead of using any of the methods described above, the call continuation request may be input by any method when a link loss occurs. In other words, since it is necessary to input a call continuation request within a certain time after a link loss occurs, it is possible to input a call continuation request by arbitrarily selecting an input operation that is most easily input by the user when a link loss occurs. To do. Thereby, even if it is a short time (for example, 5 seconds), a user can easily input a call continuation request without panicking and can continue the voice call.

  In the above description, the case where the call with the other party via the call network 14 is continued when a link loss occurs is described. However, a call disconnect request may be input within a certain time. In this case, when the call disconnect request is input, the control unit 20 causes the radio communication unit 21 to disconnect the call without waiting for a certain period of time. The input method of the call disconnection request can be input using the same method as the call continuation request described above. For example, a specific button (or key) for inputting a call disconnect request is assigned to the input unit 25, and an input operation is performed on this button. When the voice recognition function is used, a call disconnect request is input by inputting a keyword different from the call continuation request, for example, “call disconnect”. Further, the call disconnection request may be input by folding the housing in the closed state.

  In the above description, link loss recovery when a link loss occurs in the communication link between the wireless communication terminal 10 and the in-vehicle device 12 is not described. For example, within a predetermined time after the link loss occurs (for example, If the time is longer than a certain time (for example, 30 seconds) for determining disconnection of the call (for example, 30 seconds)), the wireless communication terminal 10 executes processing for recovering the link loss with the in-vehicle device 12 And

  In this case, after the link loss occurs, when the call is maintained according to the call continuation request from the user, the communication link between the wireless communication terminal 10 and the in-vehicle device 12 is restored by the link loss restoration. Again, it is possible to return to a state in which a call can be made in the in-vehicle device 12 by the hands-free function. In addition, when the link loss can be recovered, whether or not to return to a state in which a call can be made in the in-vehicle device 12 may be performed according to an instruction from the user, or may be set in advance by the user. Anyway. Furthermore, after a link loss has occurred, if a call continuation request is not input from the user, link loss recovery may not be performed.

  DESCRIPTION OF SYMBOLS 10 ... Wireless communication terminal, 12 ... In-vehicle apparatus, 14 ... Telephone network, 20, 30 ... Control part, 21 ... Wireless communication part, 22, 31 ... Hands free control part, 23, 32 ... Near field communication part, 24, 34 ... display unit, 25, 35 ... input unit, 26, 36 ... audio input unit, 27, 37 ... audio output unit, 28 ... audio path switching unit, 33 ... navigation unit.

Claims (5)

In a wireless terminal device that performs wireless communication with a base station accommodated in a telephone network and is connected to other devices by short-range wireless communication using Bluetooth,
Short-range wireless communication means for establishing a communication link by the short-range wireless communication;
Controls a hands-free function based on HFP (Hands Free Profile), hands-free control means for controlling a hands-free service for the other devices,
When the hands-free control means provides a hands-free service to the other device, it detects that the communication link established by the short-range wireless communication with the other device has been disconnected. Cutting detection means;
A discriminating means for discriminating whether a predetermined time has elapsed since the cutting was detected by the cutting detecting means;
A continuation request input means for inputting a call continuation request via the telephone network until it is determined by the determination means that a predetermined time has elapsed;
Call control means for maintaining connection with the telephone network when a call continuation request is input by the continuation request input means;
Voice input / output means for inputting and outputting voice;
A first path through which voice data is transmitted and received between the other device and the call network when connected with the call network and the other device, and a call continuation request by the continuation request input means Voice path switching means for switching the path to any one of the second paths through which voice data is transmitted and received between the voice input / output means and the telephone network.
A wireless terminal device comprising: The wireless terminal device according to claim 1, wherein the continuation request input unit inputs a call continuation request by any one of a plurality of input operations. 2. The display device according to claim 1, further comprising a display unit that displays a message for notifying the user of an abnormal disconnection when the disconnection detection unit detects that a communication link disconnection has occurred. Wireless terminal device. Combining two housings, the wireless terminal device is configured in a shape that can be opened and closed,
A detecting means for detecting an open / closed state of the housing;
The wireless terminal device according to claim 1, wherein the continuation request input unit inputs the call continuation request when the detection unit detects an open state. The hands-free control means maintains the connection with the telephone network by the call control means, and when the communication link by short-range wireless communication with the other equipment is restored, the hands-free function allows the other equipment to The wireless terminal device according to claim 1, wherein the wireless terminal device is controlled so as to be able to talk.

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