JP3713209B2 - Navigation system and audio voice control method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a navigation system that can output audio voice and guided voice at the same time, and more particularly, to a navigation system and an audio voice control method that can appropriately control the output of audio voice when the guided voice is output.
[0002]
[Prior art]
A conventional navigation device, for example, selects a route to be guided from a departure point to a destination of a vehicle (hereinafter referred to as “own vehicle”) equipped with the navigation device, and includes an image (guide) Route image) is displayed on a predetermined monitor (display device). And a navigation apparatus synthesize | combines and displays the symbol which shows the present position of the own vehicle on this guidance image.
In addition, the conventional navigation device displays an enlarged image of the intersection and its vicinity (intersection enlarged image, etc.) when the vehicle approaches the intersection (branch road) where the vehicle should turn left or right according to the guidance route, and the user Properly indicate the direction to go.
The user can easily reach the destination by driving the vehicle according to the guidance route image or the enlarged intersection image displayed on the monitor in this way.
[0003]
Recently, a navigation device that can indicate a guidance route by voice as well as displaying a guidance route image, an enlarged intersection image, and the like is also known. Such a navigation device is provided with a dedicated ASP (Audio Signal Processor) or the like, for example, when it is necessary to make a right or left turn at an intersection located ahead in the traveling direction according to the current position of the vehicle and the guidance route. The corresponding guidance voice is output and an instruction to that effect is given.
Thus, the user can reach the destination without departing from the guidance route according to the guidance voice that is output without viewing the guidance route image displayed on the monitor to some extent.
[0004]
A navigation device that can output such a guidance voice can be connected to, for example, a car audio. And a navigation apparatus outputs a guidance audio | voice etc. from the speaker connected with the car audio.
Hereinafter, a system (navigation system) in which a navigation device and a car audio are connected will be described with reference to FIG. As shown in the figure, the conventional navigation system includes a navigation device 100, a monitor 200, a car audio 300, and a speaker 400.
[0005]
The navigation device 100 includes a map data 101, a route search function 102, a route guidance function 103, a map display function 104, a position detection function 105, a screen display function 106, an audio playback function 107, and a storage unit 108. Have
More specifically, when the vehicle position is detected by the position detection function 105, the map data 101 is read from the CD-ROM or the like by the map display function 104 according to the vehicle position, and a corresponding map image is generated. Is done.
In addition, when the destination is set, the route search function 102 searches the map data 101 for an appropriate guidance route that connects the vehicle position and the destination. When the route search is completed, the guide route is superimposed on the map image so as to be visually distinguishable from other roads by the screen display function 106 and displayed on the monitor 200.
Then, the route guidance function 103 requests the screen display function 106 to display an arrow or the like for turning right or left according to the relationship between the guidance route and the vehicle position, and at the same time, the voice playback function 107 Reproduction of the guidance voice instructing left turn or the like is required.
At that time, the mute request for requesting the audio audio volume reduction (mute) is issued to the car audio 300 by the audio reproduction function 107 so that the user can appropriately listen to the guidance audio. .
[0006]
On the other hand, the car audio 300 includes an operation unit 301, a switching unit 302, an audio source group 303, and a mute circuit 304.
Specifically, the switching unit 302 switches from the audio source group 303 to an arbitrary audio source in accordance with a user operation via the operation unit 301.
Further, when the mute request is issued from the navigation device 100, the mute circuit 304 outputs the audio sound so that only the guidance sound is output from the speaker 400 (so that the audio sound of the switched audio source is not output). Mutes.
[0007]
In other words, when a guidance sound is output while a user is listening to any audio sound in the audio source group 303, the audio sound is automatically muted while the guidance sound is being output. Accordingly, the user can appropriately listen to the guidance sound output from the speaker 400, and thus can reach the destination without departing from the guidance route.
[0008]
[Problems to be solved by the invention]
In the conventional navigation system as shown in FIG. 7, the user can generally set in advance whether or not to automatically mute the audio sound. In other words, when outputting audio guidance, the user sets mute (mute on) to mute the audio sound if necessary, and does not mute if mute is unnecessary ( Set to mute off.
[0009]
However, in practice, the necessity for mute is often different depending on the audio source that is the sound source of the audio sound.
For example, a user who is set to mute on listens to useful information when the audio sound of the radio broadcast is muted along with the output of the guidance sound while listening to the useful information on the radio broadcast. I will miss it.
On the other hand, users who are set to mute off will not miss useful information on radio broadcasts, but will output guidance audio while listening to CD or MD music by switching audio sources. Then, the guidance content may be misunderstood.
[0010]
That is, the conventional navigation system has to set mute on / off for the entire audio source group 303. Therefore, depending on the audio sound being listened to by the user (switched audio source), the guidance sound may be output. Inconvenience will occur.
Therefore, it is extremely difficult for a user who wants to select an audio source as desired from the audio source group 303 and listen to the audio sound.
[0011]
The present invention has been made in view of the above circumstances, and an object thereof is to provide a navigation system and an audio sound control method capable of appropriately controlling the output of audio sound at the time of guiding sound output.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, a navigation system according to the first aspect of the present invention provides:
A navigation system capable of outputting audio voice and guided voice at the same time,
Switching means for switching the sound source of the audio sound to be output to an arbitrary audio source selected from a plurality of audio sources;
Storage means for storing setting information indicating necessity / unnecessity of mute set for each audio source;
Mute means for muting the audio sound of the audio source switched by the switching means according to instruction information for instructing mute,
Control means for controlling the supply of instruction information to the mute means according to the setting information stored in the storage means when outputting the guidance voice;
It is characterized by providing.
[0013]
According to the present invention, the switching means switches the sound source of the audio sound to be output to an arbitrary audio source selected from a plurality of audio sources, for example, according to a user operation. The storage unit stores setting information (for example, a mute setting value) indicating whether mute is necessary or not set for each audio source. The mute means mute (volume reduction) the audio sound of the audio source switched by the switching means in accordance with instruction information for instructing mute. The control means controls the supply of the instruction information to the mute means according to the setting information stored in the storage means when outputting the guidance voice. For example, the control means refers to the setting information and supplies instruction information to the mute means when the audio sound of the switched audio source needs to be muted. As described above, the audio sound is muted when the guided sound is output in accordance with the necessity of the mute set for each audio source. As a result, it is possible to appropriately control the output of the audio sound when the guided sound is output.
[0014]
In order to achieve the above object, a navigation system according to the second aspect of the present invention provides:
A selection means for selecting one audio source from a plurality of audio sources as an audio source;
Guided voice generating means for appropriately generating a guided voice along the guidance route along which the vehicle is to travel,
Audio output means for outputting the audio sound of the audio source selected by the selecting means and the induced sound generated by the induced sound generating means;
Storage means for storing setting information indicating necessity / unnecessity of mute set for each audio source;
Mute means for muting the audio sound output by the sound output means according to instruction information for instructing mute,
Specifying means for specifying the audio source selected by the selecting means;
A determining unit that determines whether or not mute corresponding to the audio source specified by the specifying unit is necessary according to the setting information stored in the storage unit;
Control means for supplying instruction information to the mute means when the determination means determines that mute is necessary when the guide voice generation means generates the guide voice;
It is characterized by providing.
[0015]
According to the present invention, the selection means selects one audio source as a sound source of audio sound from a plurality of audio sources, for example, according to a user operation. The guidance voice generation means appropriately synthesizes and generates a guidance voice along the guidance route on which the host vehicle is to travel. The voice output unit outputs the audio voice of the audio source selected by the selection unit and the guidance voice generated by the guidance voice generation unit. The storage unit stores setting information (for example, a mute setting value) indicating whether mute is necessary or not set for each audio source. The mute means mutes the audio sound output from the sound output means in accordance with instruction information for instructing mute. The specifying unit specifies the audio source selected by the selecting unit. The discriminating unit discriminates necessity / unnecessity of mute corresponding to the audio source specified by the specifying unit according to the setting information stored in the storage unit. The control unit supplies instruction information to the mute unit when the determination unit determines that the mute is necessary when the guide voice generation unit generates the guide voice. As described above, the audio sound is muted when the guided sound is output in accordance with the necessity of the mute set for each audio source. As a result, it is possible to appropriately control the output of the audio sound when the guided sound is output.
[0016]
The navigation system further includes input means for inputting setting information indicating necessity / unnecessity of mute corresponding to each audio source,
The storage means may store setting information input by the input means.
[0017]
In order to achieve the above object, an audio / sound control method according to a third aspect of the present invention includes:
An audio sound control method in a navigation system capable of outputting audio sound and guided sound at the same time,
A switching step of switching a sound source of output audio sound to an arbitrary audio source selected from a plurality of audio sources;
A storage step for storing setting information indicating whether or not mute is set for each audio source in a predetermined storage unit;
A mute control step for muting the audio sound of the audio source switched in the switching step according to the setting information stored in the storage unit in the storing step when outputting the guidance sound;
It is characterized by providing.
[0018]
According to the present invention, the switching step switches the sound source of the output audio sound to an arbitrary audio source selected from a plurality of audio sources. The storing step stores setting information (for example, a mute setting value) indicating whether mute is necessary or not set for each audio source in a predetermined storage unit. In the mute control step, when outputting the guidance sound, the audio sound of the audio source switched in the switching step is muted according to the setting information stored in the storage unit in the storing step. As described above, the audio sound is muted when the guided sound is output in accordance with the necessity of the mute set for each audio source. As a result, it is possible to appropriately control the output of the audio sound when the guided sound is output.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
A navigation system according to an embodiment of the present invention will be described below with reference to the drawings.
[0020]
FIG. 1 is a schematic diagram showing an example of a navigation system applied to the embodiment of the present invention. As shown in the figure, this system includes a navigation device 1, a monitor 2, a car audio 3, and a speaker 4.
[0021]
The navigation device 1 includes a GPS module 11, a CD-ROM 12, a storage unit 13, a processing control unit 14, a source monitoring unit 15, a voice synthesis unit 16, and an image generation unit 17.
A GPS (Global Positioning System) module 11 receives satellite radio waves transmitted from a plurality of GPS satellites via a GPS antenna (not shown), and despreads and demodulates each received satellite radio wave to generate a plurality of satellite reception signals. get. Then, position information including latitude, longitude, altitude, and the like is generated based on the difference in arrival times of the satellite radio waves calculated according to the acquired satellite reception signals.
The GPS module 11 sequentially supplies the generated position information to the processing control unit 14.
[0022]
The CD-ROM 12 stores a map image for display, predetermined road network information, and the like. The road network information is composed of link information that defines section routes (links) divided into predetermined units, node information that defines intersections (nodes), and the like.
The road network information and the like stored in the CD-ROM 12 are appropriately read out by a reproduction unit (not shown) and supplied to the processing control unit 14.
[0023]
The storage unit 13 includes an information storage device such as a RAM (Random Access Memory) and a magnetic disk, and stores guide route information that defines the guide route to the destination, and also stores an arbitrary mute setting value 13a.
This mute setting value 13a indicates whether or not the volume of audio sound is reduced (muted) in units of audio sources (radio broadcast receiving unit 33 to cassette reproducing unit 36 described later) that can be selected (switched) in car audio 3. This is a value for defining mute on / off.
For example, the storage unit 13 stores a mute setting value 13a set by the user as shown in FIG. In the case of the mute setting value 13a shown in the figure, the audio sound of the audio source (CD playback unit 34 to cassette playback unit 36) other than the radio broadcast receiving unit 33 is set to be muted.
[0024]
Returning to FIG. 1, the processing control unit 14 includes a one-chip microcomputer or the like provided with a ROM (Read Only Memory), a RAM, and the like, and controls the entire navigation apparatus 1.
Specifically, when the processing control unit 14 acquires a destination or the like input via a predetermined operation panel, the processing control unit 14 searches the road network information stored in the CD-ROM 12 and connects, for example, the current location to the destination. Select the shortest guidance route. Then, guide route information that defines the selected guide route is stored in the storage unit 13.
[0025]
Further, the processing control unit 14 sequentially determines whether or not it is necessary to instruct the user to guide the route according to the guide route information stored in the storage unit 13 and the position information acquired from the GPS module 11. Then, when it is necessary to give an instruction to the user, a predetermined guidance message is generated and supplied to the voice synthesizer 16, thereby outputting a guidance voice for guiding a route via the speaker 4.
At that time, the processing control unit 14 specifies the currently selected source (any audio source) in the car audio 3 via the source monitoring unit 15, refers to the mute setting value 13 a stored in the storage unit 13, A mute circuit 37 (to be described later) is controlled via the voice synthesizer 16.
For example, in a state where the CD playback unit 34 is selected as the audio source and the mute setting value 13a shown in FIG. 2 is stored in the storage unit 13, the processing control unit 14 outputs a voice when the guidance voice is output. The mute circuit 37 is operated via the synthesizer 16 to mute the audio sound (CD playback sound).
[0026]
The source monitoring unit 15 monitors the selection (switching) of the audio source by the switching unit 32 to be described later, and holds information defining the currently selected source in the car audio 3.
[0027]
The voice synthesizer 16 is composed of a voice chip (Voice IC) that can synthesize a predetermined voice signal (electrical signal). When a predetermined guidance message is supplied from the processing control unit 14, the voice synthesizer 16 follows the guidance message. Synthesized voice signal (guide voice). The voice synthesizer 16 outputs the synthesized voice signal via the speaker 4.
Further, the voice synthesizer 16 controls the operation (mute on / off) of the mute circuit 37 according to the control of the processing control unit 14.
[0028]
The image generation unit 17 is controlled by the processing control unit 14 and generates a navigation image in which a symbol indicating the vehicle position, a guidance route, and the like are combined with a map image.
The image generation unit 17 generates a setting image (mute setting screen) as shown in FIG. The setting image shown in the figure is for the user to freely select whether or not to mute each audio source in the car audio 3 at the time of guidance voice output ("x" in the figure is mute on / no mute off). This is the image used.
When the setting image as shown in FIG. 3 is displayed on the monitor 2 and the mute on / off of each audio source is set by the user, the processing control unit 14 sets the mute setting value 13a corresponding to the set content. It is generated and stored in the storage unit 13.
[0029]
Returning to FIG. 1, the monitor 2 includes an LCD (Liquid Crystal Display), a CRT (Cathode Ray Tube), or the like, and displays a navigation image, a setting image, and the like generated by the image generation unit 17.
[0030]
The car audio 3 includes an operation unit 31, a switching unit 32, a radio broadcast receiving unit 33, a CD playback unit 34, an MD playback unit 35, a cassette playback unit 36, and a mute circuit 37. .
The operation unit 31 includes, for example, a plurality of key switches arranged on the front surface of the car audio 3, and an instruction to instruct switching of the audio source (radio broadcast reception unit 33 to cassette reproduction unit 36) according to an operation by the user. Information is supplied to the switching unit 32.
[0031]
The switching unit 32 switches connection between any audio source and the speaker 4 via the mute circuit 37 according to the instruction information supplied from the operation unit 31.
In addition, for example, when the audio source is switched, the switching unit 32 supplies information specifying the switched audio source (currently selected source) to the source monitoring unit 15 of the navigation device 1.
[0032]
The radio broadcast receiving unit 33 includes an AM / FM tuner unit incorporated in the car audio 3, and receives a broadcast program having a predetermined frequency.
The CD playback unit 34, the MD playback unit 35, and the cassette playback unit 36 include a CD playback unit, an MD playback unit, a cassette playback unit, and the like incorporated in the car audio 3, respectively. And the cassette tape is reproduced.
[0033]
The mute circuit 37 is controlled by the processing control unit 14 via the voice synthesis unit 16 of the navigation device 1 and mutes the audio sound of the connected (switched) audio source.
[0034]
The speaker 4 is a stereo speaker or the like, and outputs the audio sound of the audio source switched by the switching unit 32 of the car audio 3.
Further, the speaker 4 outputs a guidance voice supplied from the voice synthesis unit 16 of the navigation device 1.
[0035]
The operation of the navigation system according to the embodiment of the present invention will be described below with reference to FIG. FIG. 4 is a flowchart for explaining the route guidance process executed by the process control unit 14 of the navigation device 1.
The route guidance process shown in FIG. 4 is repeatedly executed at regular intervals after the navigation operation is instructed by the user with the mute setting value 13a and the guidance route information stored in the storage unit 13, for example. The
[0036]
First, the process control unit 14 updates the own vehicle position (step S11). That is, the processing control unit 14 controls the image generation unit 17 to update the position of the symbol indicating the vehicle position on the map image according to the position information supplied from the GPS module 11 and monitor the updated navigation image. 2 is displayed.
[0037]
The process control unit 14 determines whether or not the own vehicle is located in the vicinity of the intersection according to the updated own vehicle position (step S12). That is, the process control unit 14 refers to the road network information stored in the CD-ROM 12 and determines whether or not the distance between the vehicle position and the destination intersection is within a certain distance.
[0038]
If the process control unit 14 determines that it is not located near the intersection, it ends the route guidance process as it is. On the other hand, when determining that the vehicle is located in the vicinity of the intersection, the processing control unit 14 determines whether the intersection is a guidance target (step S13). That is, the process control unit 14 refers to the guidance route information stored in the storage unit 13 and determines whether or not the intersection is a necessary intersection such as a right or left turn.
[0039]
If the process control unit 14 determines that the intersection is not a guidance target intersection, the process control unit 14 ends the route guidance process. On the other hand, when it is determined that the intersection is a guidance target intersection, the process control unit 14 determines whether or not the utterance end point at which the output of the guidance voice is finished has been passed (step S14). That is, the process control unit 14 determines whether or not the vehicle has already advanced to a position where the output of the guidance voice is not necessary, with the position of the intersection as a reference.
[0040]
If it is determined that the utterance end point has not been passed, the process control unit 14 acquires a selected source (switched audio source) in the car audio 3 (step S15). That is, the processing control unit 14 acquires information that defines the current audio source switched by the switching unit 32 held by the source monitoring unit 15.
[0041]
Then, the process control unit 14 refers to the mute setting value 13a stored in the storage unit 13 and determines whether or not the current audio source is a mute target (step S16).
For example, when the mute setting value 13a as shown in FIG. 2 is stored in the storage unit 13 and the audio source is the radio broadcast receiving unit 33, the processing control unit 14 determines that it is not a mute target, On the other hand, when the audio source is the CD playback unit 34, it is determined that the audio source is a mute target.
[0042]
If the process control unit 14 determines that it is not a mute target, the process control unit 14 proceeds to step S19 described later. On the other hand, if it is determined that the object is to be muted, the process control unit 14 determines whether mute is on (step S17). That is, the process control unit 14 determines whether or not the mute circuit 37 has already been instructed to perform a mute operation.
[0043]
If the process control unit 14 determines that the mute is on, the process control unit 14 proceeds to step S19 described later. On the other hand, if it is determined that the mute is not on (the mute is off), the process control unit 14 mutes the audio sound of the car audio 3 (step S18). That is, the processing control unit 14 instructs the mute circuit 37 via the voice synthesis unit 16 to perform a mute operation.
[0044]
The process control unit 14 emits a guidance voice from the speaker 4 (step S19). That is, the process control unit 14 supplies the corresponding guidance message to the voice synthesis unit 16 to cause the speaker 4 to output the guidance voice.
[0045]
If it is determined in step S14 that the utterance end point has been passed, the processing control unit 14 determines whether or not the voice output has been completed so that the guidance voice is not interrupted in the middle (step S20). When the audio output is completed, the audio sound of the car audio 3 is muted off (step S21).
As described above, the audio guidance corresponding to the output of the guidance voice is muted or the like according to the information (mute setting value 13a) that defines the necessity of mute set for each audio source by the route guidance process.
[0046]
In other words, according to the mute setting value 13a, for example, when listening to news or traffic information by radio broadcasting, since it is not muted, there is no missed useful information, while listening to music such as a CD. If so, you can hear the guidance voice properly.
As a result, it is possible to appropriately control the output of the audio sound when the guided sound is output.
[0047]
In the above embodiment, the case where the mute setting value 13a is stored in the storage unit 13 in the navigation device 1 has been described. However, the storage location of such a mute setting value is not limited to the navigation device 1 and is arbitrary. . For example, you may memorize | store in the memory | storage part in a head unit (control apparatus etc.).
In the above embodiment, the navigation apparatus 1 and the car audio 3 share one speaker 4 and the guidance sound is output from the speaker 4. However, a dedicated speaker is separately provided for the navigation apparatus 1. It is also possible to output a guidance voice from this dedicated speaker.
Hereinafter, other embodiments of the present invention will be described with reference to the drawings. FIG. 5 is a schematic diagram showing an example of a navigation system applied to another embodiment of the present invention.
[0048]
As shown in the figure, this system includes a navigation device 1, a monitor 2, a speaker 4, a guidance voice speaker 5, a head unit 6, a CD player 7, and an MD player 8.
The navigation device 1, the head unit 6, the CD player 7, and the MD player 8 are connected via a bus 9 including, for example, a USB (Universal Serial Bus), IEEE (Institute of Electrical and Electronics Engineers) 1394, or the like. Yes.
[0049]
The navigation device 1 includes an interface 18 that transmits and receives data via the bus 9 instead of the source monitoring unit 15 of the navigation device 1 shown in FIG.
Other configurations are almost the same as those of the navigation apparatus 1 shown in FIG. However, unlike the navigation device 1 of FIG. 1, the mute setting value 13a is not stored in the storage unit 13.
The guidance voice speaker 5 is connected to the navigation device 1 and outputs the guidance voice supplied from the voice synthesis unit 16.
[0050]
The head unit 6 includes a control device and the like, and includes an interface 61, a control unit 62, a storage unit 63, an operation unit 64, a switching unit 65, a radio broadcast receiving unit 66, a cassette reproducing unit 67, and a decoder 68. And a mute circuit 69.
[0051]
The interface 61 transmits / receives predetermined data to / from other devices (the navigation device 1, the CD player 7, the MD player 8, etc.) via the bus 9.
For example, the interface 61 receives data indicating the output start and output stop of the guidance voice sent from the navigation device 1. The interface 61 receives music data sent from the CD player 7 or the like.
[0052]
The control unit 62 includes a one-chip microcomputer provided with a ROM, a RAM, and the like, and controls the entire head unit 6.
Specifically, when the control unit 62 detects the output of the guidance voice in the navigation device 1 via the interface 61, the control unit 62 specifies the current audio source switched by the switching unit 65 and stores the mute setting stored in the storage unit 63. The mute circuit 69 is controlled with reference to the value 63a.
[0053]
The storage unit 63 includes a RAM or the like, and stores an arbitrary mute setting value 63a. Note that the mute setting value 63a reduces the volume of audio sound in units of audio sources (radio broadcast receiving unit 66, cassette playback unit 67, CD player 7, MD player 8, etc.) in the same manner as the mute setting value 13a described above. This is a value for defining whether or not (mute) is performed (mute on / off).
The mute setting value 63a is generated when a setting image as shown in FIG. 6 is displayed on the monitor 2 or the like and the mute on / off of each audio source is set by the user, and is stored in the storage unit 63. The
FIG. 6 shows a setting image when two CD changers (not shown) are connected to the bus 9. In such a case, mute on / off can be set separately for each CD changer. .
[0054]
Returning to FIG. 5, the operation unit 64 includes a plurality of key switches and the like, and supplies instruction information for instructing switching of the audio source (radio broadcast receiving unit 66 and the like) to the switching unit 65 in accordance with an operation by the user.
The switching unit 65 switches connection between any audio source and the speaker 4 via the mute circuit 69 in accordance with the instruction information supplied from the operation unit 64. The radio broadcast receiving unit 66 and the cassette reproducing unit 67 include a tuner unit and a cassette reproducing unit incorporated in the head unit 6.
[0055]
The decoder 68 decodes music data supplied from the CD player 7 or the like via the interface 61 and generates an audio signal (audio sound).
The mute circuit 69 is controlled by the control unit 62 and mutes the audio sound of the connected (switched) audio source.
[0056]
The CD player 7 and the MD player 8 play the loaded music CD and MD, and supply music data to the head unit 6 via the bus 9.
[0057]
The navigation system shown in FIG. 5 having such a configuration is different from the navigation system shown in FIG. 1 in that the mute setting value 63a is stored in the storage unit 63 of the head unit 6, and the control unit 62 refers to the mute setting value 63a. The mute circuit 69 is controlled.
For example, when the control unit 62 acquires the data indicating the output start of the guidance voice sent from the navigation device 1 via the interface 61, the control unit 62 specifies the current audio source switched by the switching unit 65.
The control unit 62 refers to the mute setting value 63a stored in the storage unit 63 and operates the mute circuit 69 when the audio sound of the specified audio source needs to be muted.
[0058]
In this way, the audio sound corresponding to the output of the guided sound is muted according to the information (mute setting value 63a) that defines whether mute is necessary or not set for each audio source.
Also in this case, it is possible to appropriately control the output of the audio sound when the guided sound is output.
[0059]
【The invention's effect】
As described above, according to the present invention, it is possible to appropriately control the output of the audio sound when the guided sound is output.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an example of a configuration of a navigation system according to an embodiment of the present invention.
FIG. 2 is a schematic diagram illustrating an example of a mute setting value stored in a storage unit.
FIG. 3 is a schematic diagram illustrating an example of a setting image (a mute setting screen displayed on a monitor) generated by an image generation unit.
FIG. 4 is a flowchart for explaining route guidance processing according to the embodiment of the present invention;
FIG. 5 is a block diagram showing an example of a navigation system according to another embodiment of the present invention.
FIG. 6 is a schematic diagram illustrating an example of another setting image.
FIG. 7 is a block diagram showing an example of a conventional navigation system.
[Explanation of symbols]
1 Navigation device
2 Monitor
3 Car audio
4 Speaker
5 Speaker for guidance voice
6 Head unit
7 CD player
8 MD player
9 Bus
11 GPS module
12 CD-ROM
13 Memory unit
14 Processing control unit
15 Source monitoring unit
16 Speech synthesis unit
17 Image generator
18 interface
31, 64 operation unit
32, 65 switching part
33,66 Radio broadcast receiver
34 CD playback section
35 MD playback section
36, 67 Cassette playback section
37, 69 Mute circuit
61 interface
62 Control unit
63 Storage unit
68 decoder

Claims (4)

A navigation system capable of outputting audio voice and guided voice at the same time,
Switching means for switching the sound source of the audio sound to be output to an arbitrary audio source selected from a plurality of audio sources;
Storage means for storing setting information indicating necessity / unnecessity of mute set for each audio source;
Mute means for muting the audio sound of the audio source switched by the switching means according to instruction information for instructing mute,
Control means for controlling the supply of instruction information to the mute means according to the setting information stored in the storage means when outputting the guidance voice;
A navigation system comprising: A selection means for selecting one audio source from a plurality of audio sources as an audio source;
Guided voice generating means for appropriately generating a guided voice along the guidance route along which the vehicle is to travel,
Audio output means for outputting the audio sound of the audio source selected by the selecting means and the induced sound generated by the induced sound generating means;
Storage means for storing setting information indicating necessity / unnecessity of mute set for each audio source;
Mute means for muting the audio sound output by the sound output means according to instruction information for instructing mute,
Specifying means for specifying the audio source selected by the selecting means;
A determining unit that determines whether or not mute corresponding to the audio source specified by the specifying unit is necessary according to the setting information stored in the storage unit;
Control means for supplying instruction information to the mute means when the determination means determines that mute is necessary when the guide voice generation means generates the guide voice;
A navigation system comprising: It further comprises input means for inputting setting information indicating whether mute is necessary or not corresponding to each audio source,
The storage means stores setting information input by the input means;
The navigation system according to claim 1 or 2, wherein An audio sound control method in a navigation system capable of outputting audio sound and guided sound at the same time,
A switching step of switching a sound source of output audio sound to an arbitrary audio source selected from a plurality of audio sources;
A storage step for storing setting information indicating whether or not mute is set for each audio source in a predetermined storage unit;
A mute control step for muting the audio sound of the audio source switched in the switching step according to the setting information stored in the storage unit in the storing step when outputting the guidance sound;
An audio voice control method comprising:

Images