JP2009077414A - Mobile terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile terminal device which is provided with a voice communication capability and a route guiding capability and can continue route guiding while keeping voice communication if an incoming call arrives when executing the guide of a route to a destination. <P>SOLUTION: A mobile telephone 10 has a capability to provide voice communication and a capability to provide route guiding. The mobile telephone 10 also has a control part 25 for controlling to make a frequency band of the route guiding voice different from the one of the other end's voice on the voice communication when the voice communication capability and the route guiding capability are activated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a mobile terminal device, and more particularly to a mobile terminal device having a position information acquisition function such as GPS (Global Positioning System), and more particularly to a mobile terminal device applicable to a mobile phone having a GPS function. .

  2. Description of the Related Art Pedestrian navigation systems that can provide route guidance to a destination for pedestrians have been put into practical use in portable terminal devices (hereinafter represented by mobile phones). The mobile phone in this system receives the GPS signal by the built-in GPS receiver, acquires its own location information (current location), and further provides map information and guidance information for route guidance to a desired destination. It accesses a Web site (server device) that can be provided, and transmits its current location information and destination information. The Web site transmits map information and guidance information corresponding to current location information and destination information from the mobile phone to the mobile phone. The mobile phone displays the map information transmitted from the website on the screen, and displays the guidance information to the destination on the screen and outputs the sound.

  A user having the mobile phone can arrive at the destination by an optimal walking route by listening to voice guidance while viewing a map displayed on the screen of the mobile phone. The current location is superimposed on the map displayed on the screen, and the user can walk to the destination while checking his / her current location on the map.

  However, when using the pedestrian navigation system and receiving an incoming call to a mobile phone, the user must bring the mobile phone closer to the face in order to make a voice call. In that case, display information (map information) on the mobile phone cannot be seen, navigation (route guidance) has to be interrupted, and the user has to stop or just walk with intuition while talking.

  If you try to make a voice call and route guidance at the same time, the voice from the other party of the voice call and the voice guidance from the route guidance will be mixed, making it difficult to hear, and the voice guidance will also be heard by the other party There's a problem.

In contrast, for example, Patent Document 1 discloses a position information system (automobile navigation system) that prevents position information (voice guidance) from being inadvertently transmitted to the other party during a call using a mobile phone or the like. It is disclosed. This is because, in a navigation system having a voice information transmission function, detection means for detecting the transmission or call state of a telephone in the vicinity of the place where the navigation system is installed, and the navigation system according to a signal output from the detection means The voice information of the navigation system is cut off during a telephone call.
Japanese Patent Laid-Open No. 9-218049

  However, the invention described in Patent Document 1 relates to an automobile navigation system and cannot be applied to a pedestrian navigation system using a mobile phone. In addition, since the telephone and the navigation system are configured separately, and the voice on the navigation system side is blocked so that the voice partner cannot hear the voice guidance, the voice call and the route guidance cannot be performed simultaneously.

  The present invention has been made in view of the above circumstances, and in a mobile terminal device having a voice call function and a route guidance function (navigation function), an incoming call is received during route guidance to a desired destination. Even if there was, it was made for the purpose of being able to continue route guidance while making a voice call.

  In order to solve the above-described problem, the first technical means of the present invention is a portable terminal device having a function of performing a voice call and a function of performing route guidance, wherein the voice call function and the route guidance function are Control means is provided for controlling so that the frequency band of the voice of the route guidance is different from the frequency band of the voice of the other party of the voice call when it is activated.

  According to a second technical means, in the first technical means, the control means determines whether the other party is male or female based on the frequency band of the voice of the other party of the voice call. If it is determined that the voice of the route guidance is a female voice, and if the call partner is determined to be a female, the voice of the route guidance is a male voice.

  The third technical means comprises state selection means for selecting either the route guidance or the voice call state in the first or second technical means, and the control means is selected by the state selection means. Further, the voice output of the route guidance or the voice call is controlled according to the state of the portable terminal device.

  According to the present invention, in a mobile terminal device having a voice call function and a route guidance function (navigation function), even when an incoming call is received during route guidance to a desired destination, Since the route guidance can be continued, the user can surely arrive at a desired destination without interrupting the route guidance.

(Reference example)
FIG. 1 is a schematic diagram showing an example of the appearance of a mobile terminal device according to a reference example of the present invention. In FIG. 1, 10 is a mobile terminal device, and the mobile terminal device 10 includes an antenna 11 for transmitting and receiving radio waves, a call partner. A receiver 12 for receiving and receiving voices, a display unit 13 for displaying various information, an operation unit 14 for inputting various operation signals and information, a microphone 15 for transmitting to a calling party, and a speaker 21 for outputting sound. A current location information acquisition unit for acquiring the current position (latitude / longitude) of the device, a route guidance (navigation) based on the acquired current location information, and a voice call unit as a normal telephone. Even when there is an incoming call while performing route guidance to a desired destination, the route guidance can be continued while making a voice call. Hereinafter, in this example, a case in which the mobile terminal device 10 is applied to a mobile phone (hereinafter, mobile phone 10) will be described as a representative example.

  In this example, when the mobile phone 10 is in a route guidance (navigation) state (hereinafter referred to as navigation mode), the mobile phone 10 is held in a substantially horizontal direction and is in a voice call (hereinafter referred to as call mode). Note that it is held in a substantially vertical direction. FIG. 1A shows a holding state when the mobile phone 10 is in the navigation mode, and FIG. 1B shows a holding state when the mobile phone 10 is in the call mode.

  As shown in FIG. 1A, when the user of the mobile phone 10 receives a voice call while holding the mobile phone 10 in a substantially horizontal direction and using it in the navigation mode, As shown in FIG. 1B, the microphone 15 of the mobile phone 10 is placed near the mouth, the receiver 12 is placed near the ear, and the mobile phone 10 is held in a substantially vertical direction. Accordingly, during a voice call, navigation information such as a map and character information displayed on the display unit 13 cannot be seen, so the user frequently changes the holding direction of the mobile phone 10 to call mode (substantially vertical). Direction) to navigation mode (substantially horizontal direction) to confirm navigation information. In this way, when trying to perform voice call and route guidance at the same time, the voice from the other party of the voice call and the voice guidance of the navigation are mixed, making it difficult to hear, or the voice guidance can be heard by the other party. End up.

  Therefore, the mobile phone 10 of this example is provided with a detection unit that detects the direction in which the mobile phone 10 is held, and stops the voice call transmission / reception or the transmission only in the navigation mode (substantially horizontal direction). Thus, the voice guidance for navigation is output, and the voice guidance for navigation is stopped in the call mode (substantially vertical direction) so that the voice guidance is not transmitted to the other party. This will be described in detail with reference to FIG.

  2 is a block diagram showing an internal configuration example of the mobile phone 10 shown in FIG. 1. The mobile phone 10 includes an antenna 11, a receiver 12, a display unit 13, an operation unit 14, a microphone 15, an RF unit 16, and communication control. 17, a GPS antenna 18, a GPS receiver 19, a display processor 20, a speaker 21, a RAM 22, a nonvolatile memory 23, a detector 24, and an application controller 25. The application control unit 25 is a microcomputer provided with a CPU (not shown), reads a control program for the mobile phone 10 stored in the nonvolatile memory 23 to the RAM 22 as a work area, and executes the control program on the RAM 22. Various processes are performed.

  In FIG. 2, the mobile phone 10 receives the GPS signal by the GPS antenna 18 and the GPS receiver 19 as the current location information acquisition means and acquires the current location of itself, but the means for acquiring the current location information is The present location information may be acquired using, for example, RFID (Radio Frequency Identification), two-dimensional barcode, short-range wireless (wireless LAN, Bluetooth, etc.), not limited to the GPS. In the case of GPS, GPS signals may not be satisfactorily received in buildings, underground malls, and the like. Therefore, RFID or the like may be used. For example, in a building such as a station or department store, an RFID tag that stores the position information of the building is provided in a predetermined location, and the position information is acquired by communicating from the mobile phone 10 to the RFID tag, This can be used as current location information.

  The mobile phone 10 includes means for connecting via a network to a website (not shown) (hereinafter referred to as a server device) that can provide map information and guidance information for route guidance to a desired destination. This means includes an antenna 11, an RF unit 16, a communication control unit 17, and an application control unit 25. In addition, the mobile phone 10 includes an operation unit 14 that is an input unit for inputting destination information, and a detection unit 24 that detects whether the mobile phone 10 is in a navigation mode or a call mode. .

  The application control unit 25 transmits the current location information and desired destination information of the mobile phone 10 to the server device, acquires from the server device map information and guidance information according to the current location and destination, and the acquired map The information is displayed and output on the screen of the display unit 13, and the guidance information is output from the speaker 21 by voice, and the guidance information is output by voice according to the state of the mobile phone 10 determined by the detection unit 24. And means for controlling.

  The detection unit 24 is means for detecting whether the mobile phone 10 is in a navigation mode or a call mode. For example, the mobile phone 10 is held using a vertical direction sensor, a gyro sensor, an electronic compass, or the like. Direction (horizontal / vertical) may be detected. When the application control unit 25 detects that the mobile phone 10 is held in a substantially horizontal direction, the application control unit 25 determines that the mobile phone 10 is in a navigation mode, and determines that the mobile phone 10 is held in a substantially vertical direction. If detected, it is determined that the mobile phone 10 is in the call mode.

  Further, as another example of the detection unit 24, when in the navigation mode, the vicinity of the receiver 12 of the mobile phone 10 is held away from the user, and when in the call mode, the vicinity of the receiver 12 of the mobile phone 10 is Focusing on the fact that the contact is held in the vicinity of the user's ear, this contact state may be detected by a sensor or the like. Thereby, mode determination can be performed. At this time, in order to prevent erroneous determination, mode determination may be performed when a contact state is detected for a predetermined time or more.

  The guidance information is information for performing route guidance such as “about 50 m ahead left” according to the current position of the mobile phone 10, and is displayed on the screen of the display unit 13. Or voice output from the speaker 21 as voice guidance. This voice guidance may be repeatedly output by a user operation. In this case, even if the voice guidance is missed, the route can be confirmed. Further, when the user goes too far over the destination or makes a mistake in the route, voice guidance corresponding to the situation may be output. The voice guidance may be output from the receiver 12 or an external earphone (not shown).

  As another example, the mobile phone 10 may include a storage unit that stores map information and guidance information for performing route guidance to a desired destination. This storage means may be the nonvolatile memory 23 or an external storage medium such as various memory cards. In this case, since the cellular phone 10 can acquire map information and guidance information according to the current location and destination from the storage means, it is not necessary to connect to the server device. In each example described below, a mode in which map information and guidance information are acquired from a server device of a website will be described as a representative example.

  FIG. 3 is a diagram for explaining the state of voice guidance for navigation and transmission / reception of voice calls in each mode. The modes that can be determined by the application control unit 25 include, for example, three modes: a navigation mode, a call mode, and a simultaneous voice guidance mode described later. When the mobile phone 10 is detected to be held in a substantially horizontal direction, the navigation mode is determined, the navigation voice guidance is “ON”, the voice call transmission is “OFF”, and the voice call reception is “ON”. Alternatively, if the mobile phone 10 is controlled to be “OFF” and detects that the mobile phone 10 is held in a substantially vertical direction, it is determined as a call mode, the navigation voice guidance is “OFF”, and the voice call transmission is “ ON ”, voice call reception is controlled to be“ ON ”, and when the simultaneous voice guidance mode is set, navigation voice guidance is“ ON ”, voice call transmission is“ ON ”, and voice call reception is It is controlled to be “ON”.

  The cellular phone 10 configured as described above receives a GPS signal by the built-in GPS receiver 19 to acquire its own location information (current location), and further provides route guidance to a desired destination. It accesses a server device that can provide map information and guide information, and transmits its current location information and destination information. The server device transmits map information and guidance information corresponding to the current location information and destination information from the mobile phone 10 to the mobile phone 10. The cellular phone 10 displays the map information transmitted from the server device 10 on the screen of the display unit 13 and outputs the guidance information to the destination from the speaker 21 by voice.

  At this time, when a user of the mobile phone 10 holds the mobile phone 10 in a substantially horizontal direction and uses it in the navigation mode and receives a voice call, the user of the mobile phone 10 holds the microphone 15 of the mobile phone 10 to make a voice call. The receiver 12 is placed near the ear near the mouth, and the mobile phone 10 is held in a substantially vertical direction. Accordingly, during a voice call, navigation information such as a map and character information displayed on the display unit 13 cannot be seen, so the user frequently changes the holding direction of the mobile phone 10 to call mode (substantially vertical). Direction) to navigation mode (substantially horizontal direction) to confirm navigation information.

  When it is determined that the navigation mode is selected, the application control unit 25 stops the transmission / reception of voice calls or only the transmission, and outputs the navigation guidance information as voice. When the application control unit 25 determines that the call mode is selected, the navigation control information is output as voice. Is stopped (see FIG. 3). In addition, as a method for stopping transmission / reception of voice calls or only transmission and a method for stopping the voice output of navigation guidance information, a method of stopping the voice output itself, or a method of muting the voice without stopping the voice output itself And so on. Further, the audio output level may be suppressed (the audio output level is lowered).

  As described above, when the mobile phone 10 is changed from the navigation mode to the call mode, the change is detected by the detection unit 24, so that the voice guidance for navigation is stopped and the voice guidance is not transmitted to the call partner. Can be. On the other hand, when the mobile phone 10 is in the call mode and the navigation information is changed to the navigation mode in order to confirm the navigation information, the change is detected by the detection unit 24, so that only the voice call transmission / reception or the transmission is performed. The navigation information can be quickly confirmed by temporarily stopping and outputting voice guidance by navigation.

  In addition, when the detection unit 24 determines that the navigation mode is selected, the application control unit 25 stops only transmission / reception of voice calls or transmission, and transmits predetermined information to the other party of voice calls. Also good. As this information, for example, a voice message indicating that navigation is currently being performed, an arbitrary standby melody, or the like can be transmitted.

  FIG. 4 is a flowchart for explaining an operation example of the mobile phone 10 according to the reference example of the present invention. First, the user holds the mobile phone 10 in a substantially horizontal direction to enter the navigation mode (step S1), displays a map and characters on the screen of the display unit 13, and outputs voice guidance from the speaker 21 (step S2). , Route guidance. Next, it is determined whether or not the navigation mode has ended (step S3). If it is determined that the navigation mode has ended (in the case of YES), the navigation mode is ended as it is. If it is determined in step S3 that the operation is not completed, that is, navigation is continuing (NO), it is determined whether there is an incoming call (step S4). If it is determined that there is no incoming call (NO), the above step Return to S2. If it is determined in step S4 that there is an incoming call (in the case of YES), the detection unit 24 determines whether the mobile phone 10 is in the navigation mode or the call mode (step S5).

  If it is determined in step S5 that the navigation mode is set (in the case of the navigation mode in the figure), the navigation mode is continued, the voice call transmission / reception or only the transmission is stopped, and a voice message, a standby melody, etc. The information is transmitted to the other party (step S6), the latest navigation information is voice-guided (step S7), and the process returns to step S2 to repeat the process. The latest navigation information may be navigation information that should have been voice-guided or navigation information based on the current position.

  On the other hand, if it is determined in step S5 that the call mode is set (in the case of call mode in the figure), the voice guidance for navigation is stopped as the call mode (step S8), and it is determined whether or not the call is ended (step S9) If it is determined that the talk has ended (in the case of YES), the call is terminated and the transmission / reception sound is stopped (step S10), and the process returns to step S1. If it is determined in step S9 that the call is not finished (NO), the process returns to step S5 and the process is repeated.

(Other reference examples)
In the reference example described above, the mobile phone 10 is provided with the detection unit 24 so that the navigation mode and the call mode can be automatically determined. In the navigation mode, the voice call transmission / reception is stopped, and in the call mode. Since the voice guidance was stopped, the voice of the voice call and the voice guidance of the navigation were not output at the same time. In this example, according to the simultaneous voice guidance mode shown in FIG. 3, a voice call and a voice guidance for navigation can be performed simultaneously.

  Since the mobile phone 10 of this example is the same as the configuration shown in FIG. 2 except that it does not include the detection unit 24, description of each unit will be omitted. The difference from the mobile phone 10 shown in the first embodiment is that the application control unit 25 can control to output a voice guidance for navigation at a timing that does not overlap a voice call transmission / reception. .

  In FIG. 2, the application control unit 25 can determine the timing at which the voice call reception is interrupted, and the determined timing may be a timing that does not overlap the voice call transmission / reception. That is, the timing for outputting the voice guidance for navigation is determined by determining the end portion (start of silence) of the voice from the other party.

  As another example, the application control unit 25 measures a predetermined interval of the voice call transmission / reception interval / silence time, and calculates a timing that does not overlap the voice call transmission / reception based on the average value of each measurement data. May be.

  FIG. 5 is a flowchart for explaining an operation example of the mobile phone 10 according to another reference example of the present invention. First, the user holds the cellular phone 10 in a substantially vertical direction to enter a call mode (step S11), sets initial values for transmission / reception / silence (step S12), and starts a voice call (step S13). ). The user speaks from the mobile phone 10 to the other party (step S14), and measures the silent time after the transmission (step S15). In this step, the transmission / reception interval (silence time) is measured for a predetermined time or number of times, and the average value is obtained.

  Next, the cellular phone 10 determines whether a voice navigation event has occurred (step S16). If no event has occurred (NO), the process returns to step S14 and repeats the process. In step S16, if an event occurs (in the case of YES), it is determined whether the timing for outputting the voice navigation is appropriate (step S17). If it is determined that the timing is appropriate (in the case of YES) ), Voice navigation is output (step S18), and then the voice is received (step S19). If it is determined in step S17 that the timing is not appropriate (NO), the process proceeds to step S19.

  Next, the mobile phone 10 determines whether or not the conversation has ended (step S20). When it is determined that the conversation has ended (in the case of YES), the mobile telephone 10 ends the conversation as it is. If it is determined in step S20 that the talk is not finished (NO), it is determined whether a voice navigation event has occurred (step S21). If no event has occurred (NO) ), Returning to step S14, and repeating the process. In step S21, if an event occurs (in the case of YES), it is determined whether the timing for outputting the voice navigation is appropriate (step S22). If it is determined that the timing is appropriate (in the case of YES) ), Voice navigation is output (step S23), and the process returns to step S14 to repeat the process. If it is determined in step S22 that the timing is not appropriate (in the case of NO), it is determined whether the reception is interrupted (start of silence) (step S24), and this is set as the timing of voice navigation. Repeat the return process.

  In this way, even when the navigation mode and call mode determination processing is not performed, the voice guidance of the navigation is output at a timing that does not overlap the transmission / reception, so that both voices are clearly heard without being mixed. be able to. At this time, the mobile phone 10 may include switching means for selectively switching whether or not to convey the navigation voice guidance to the call partner. In addition, the voice guidance for navigation may be heard via a headset.

(Embodiment of the present invention)
Since the mobile phone 10 of the present embodiment is the same as the configuration shown in FIG. 2 except that it does not include the detection unit 24, description of each unit will be omitted. The difference from the cellular phone 10 shown in the above-mentioned reference example is that when the application control unit 25 performs voice call and navigation voice guidance at the same time, the voice frequency band of voice guidance is the voice call voice call. The point is that control is possible so as to be different from the frequency band of the other party's voice. Thereby, even if the voice call transmission / reception and the voice guidance overlap, it can be heard. For example, the voice of the other party may be analyzed to determine the sex. There is a fundamental frequency in human voice, and it is generally known that the frequency is about 200 to 300 Hz for women and about 100 to 150 Hz for men.

  In FIG. 2, the application control unit 25 can determine whether the other party is male (about 100 to 150 Hz) or female (about 200 to 300 Hz) based on the voice frequency band of the other party of the voice call. Is determined to be male, the voice of voice guidance is a female voice, and when the other party is determined to be female, the voice of voice guidance is a male voice. By doing so, even if the voice of the other party of the voice call overlaps with the voice guidance of the navigation, it can be heard.

  As described above, the determination processing of the navigation mode and the call mode is not performed, and even when the voice of the other party (the receiving side) of the voice call and the voice guidance of the navigation overlap, both voices can be clearly heard. it can. At this time, the mobile phone 10 may include switching means for selectively switching whether or not to convey the navigation voice guidance to the call partner. In addition, the voice guidance for navigation may be heard via a headset.

(Other embodiments of the present invention)
Since the mobile phone 10 of the present embodiment is the same as the configuration shown in FIG. 2 except that it does not include the detection unit 24, description of each unit will be omitted. The difference from the mobile phone 10 shown in the above reference example is that the user can select either the navigation mode or the call mode, and the voice output of the voice guidance for navigation or the voice call can be controlled according to the selected mode. This is the point.

  In FIG. 2, a mode switching function may be assigned to one of the operation keys of the operation unit 14 of the present embodiment, or a mode switching key dedicated to mode switching may be provided in the mobile phone 10. This mode switching key corresponds to the state selection means of the present invention. The application control unit 25 controls voice call or voice guidance for navigation according to the mode selected as described above, that is, the navigation mode or the call mode. When the navigation mode is selected, the voice call transmission / reception is stopped, and when the call mode is selected, the navigation voice guidance is stopped.

  The mobile phone 10 described above includes a backlight for illuminating the screen, and may be controlled so that the backlight is turned on when the navigation mode is entered. Ordinary mobile phones are used with the backlight turned off to save energy, and can be backed up for a certain period of time by pressing a predetermined operation (for example, opening the mobile phone when receiving a call) or a predetermined operation key. The light can be turned on. In the navigation mode, the user moves while looking at the screen. Therefore, the visibility of map information and the like displayed on the screen is improved by turning on the backlight according to the switching of the mode. Further, the backlight may be constantly turned on while the navigation mode is continued.

It is the schematic which shows an example of the external appearance of the portable terminal device which concerns on the reference example of this invention. FIG. 2 is a block diagram illustrating an internal configuration example of the mobile phone illustrated in FIG. 1. It is a figure for demonstrating the voice guidance of navigation in each mode, and the state of transmission / receipt of a voice call. It is a flowchart for demonstrating the operation example of the mobile telephone which concerns on the reference example of this invention. It is a flowchart for demonstrating the operation example of the mobile telephone which concerns on the other reference example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Portable terminal device (mobile telephone), 11 ... Antenna, 12 ... Receiver, 13 ... Display part, 14 ... Operation part, 15 ... Microphone, 16 ... RF part, 17 ... Communication control part, 18 ... GPS antenna, 19 ... GPS receiving unit, 20 ... display processing unit, 21 ... speaker, 22 ... RAM, 23 ... non-volatile memory, 24 ... detection unit, 25 ... application control unit.

Claims (3)

In a portable terminal device having a function of performing a voice call and a function of performing route guidance,
When the voice call function and the route guidance function are activated, there is provided control means for controlling the frequency band of the voice of the route guidance to be different from the frequency band of the voice of the other party of the voice call. The portable terminal device characterized by the above-mentioned.   2. The portable terminal device according to claim 1, wherein the control unit determines whether the call partner is male or female based on a voice frequency band of the call partner of the voice call, and determines the call partner is male. The route guidance voice is a female voice, and the route guidance voice is a male voice when the call partner is determined to be a female voice. The portable terminal device according to claim 1, further comprising a state selection unit that selects either the route guidance or the voice call.
The mobile terminal device, wherein the control means controls the voice output of the route guidance or the voice call according to the state of the mobile terminal device selected by the state selection means.

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