JP2007327774A - Vehicle-mounted navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To appropriately provide users with traffic news on routes in which vehicles are going to travel. <P>SOLUTION: When a vehicle-mounted navigation system 1 computes routes, it stores place names (such as the names of cities, towns, and villages) and the names of traffic facilities (such as the names of interchanges) on the computed routes, recognizes speech of radio broadcasting transmitted from radio broadcasting stations and received by a radio tuner 12, extracts as traffic news speech of radio broadcasting including words (such as congestion and closure to traffic) related to previously stored traffic information and the previously stored place names and the names of traffic facilities, reproduces the extracted traffic news, makes a speaker 14 output it, and recomputes routes. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an in-vehicle navigation system including route calculation means for calculating a route and broadcast receiving means for receiving a broadcast broadcast from a broadcasting station.

  In the in-vehicle navigation system, if the VICS (registered trademark) infrastructure is established and the VICS information can be received from the outside, the route from the current position to the destination using the VICS information received from the outside Is configured to calculate In other words, in the situation where the VICS infrastructure is established, the route can be calculated using the VICS information. On the other hand, in the situation where the VICS infrastructure is not established, the route is calculated using the VICS information. I can't.

On the other hand, for example, in Patent Literature 1, when radio broadcast is recognized by voice to extract traffic news, and the extracted traffic news includes a place name of a radio broadcast reception area, the position is displayed on the display device. The structure to be described is described. For example, Patent Document 2 describes a configuration in which a place name in the traveling direction of a vehicle is searched and traffic news corresponding to the searched place name is displayed on a display device.
JP 2005-98862 A JP 09-159478 A

  In Patent Documents 1 and 2 described above, traffic news can be provided to the user even if the VICS infrastructure is not maintained. However, Patent Literature 1 has a problem that traffic news provided to users is limited to traffic news related to place names in an area where radio broadcasting can be received. Moreover, in patent document 2, there exists a problem that the traffic news provided to a user is restricted to the traffic news of the advancing direction of a vehicle. Therefore, when the vehicle is far away from the destination, traffic news around the destination cannot be provided to the user, and traffic news around the destination is provided to the user only after the vehicle reaches the destination. That is, there is a problem that traffic news around the destination cannot be provided to the user unless the vehicle reaches around the destination.

  The present invention has been made in view of the above-described circumstances, and its purpose is to appropriately provide traffic news on the route on which the vehicle is going to travel to the user even if the infrastructure of VICS is not maintained. It is in providing the vehicle-mounted navigation system which can be provided.

  According to the first aspect of the present invention, when the route is calculated by the route calculation means, the place name / traffic facility name storage means stores the place name and the traffic equipment name on the route calculated by the route calculation means. When the broadcast received from the broadcast station is received by the broadcast receiving means, the sound recognition means recognizes the sound of the broadcast received by the broadcast reception means, and the traffic news extraction means sounds by the sound recognition means. From the recognized broadcast voice, the broadcast news including the vocabulary related to the traffic information stored in the traffic information vocabulary storage means and the place name and the name of the traffic facility stored in the place name / transportation equipment name storage means is traffic news. Extract as Then, the control means causes the traffic news extracted by the traffic news extraction means to be output from the notification means, or guide information reflecting the traffic news to be output from the notification means, or based on the traffic news, a route is calculated to the route calculation means. Or recalculate.

  As a result, vocabulary related to traffic information (for example, “crowded”, “closed”, etc.), place names (for example, city names) stored in the place name / transportation facility name storage means, and transportation facility names (for example, interchange names and national roads) When a broadcast (for example, “It is crowded near A city and B town”) is broadcast, the broadcast is extracted as traffic news, and the extracted traffic news is output or Because it will output guidance information reflecting traffic news (for example, traffic jam information and accident information) or recalculate the route based on the traffic news, so long as it is possible to receive broadcasts Even if the VICS infrastructure is not in place, it is possible to appropriately provide traffic news on the route that the vehicle is going to travel from now on.

  According to the invention described in claim 2, the control means causes the display device to display the display mark indicating the location name and the location of the traffic equipment name stored in the place name / transportation equipment name storage means, and the user displays the display mark. When the designation operation is performed, traffic news corresponding to the position of the display mark among traffic news stored in the traffic news storage means is output from the notification means, or guidance information reflecting the traffic news is output from the notification means. Or the route calculation means recalculates the route based on the traffic news. Thereby, when a user performs operation which designates a display mark, the traffic news corresponding to the position of the display mark can be provided to a user.

  According to the invention described in claim 3, the traffic news reception time storage means stores the time when the broadcast containing the traffic news is received by the broadcast reception means as the traffic news reception time, and the control means includes: The traffic news storage state in the traffic news storage means is managed based on the reception time stored in the traffic news reception time storage means. Thus, for example, by automatically deleting traffic news after a predetermined time from the reception time, the storage area of the traffic news storage means can be used effectively, and the storage area for storing the latest traffic news Can be secured appropriately.

  According to the invention described in claim 4, the traffic news occurrence time storage means stores the time when the traffic information phenomenon included in the traffic news extracted by the traffic news extraction means occurs as the traffic news occurrence time. The control means manages the storage state of traffic news in the traffic news storage means based on the occurrence time stored in the traffic news occurrence time storage means. Thus, for example, by automatically deleting traffic news after a predetermined time has elapsed from the time of occurrence, the storage area of the traffic news storage means can be used effectively in the same manner as described in claim 3 above. And a storage area for storing the latest traffic news can be appropriately secured.

  According to the fifth aspect of the present invention, the control means causes the notification means to output the traffic news corresponding to the route selected by the user from the plurality of routes among the traffic news extracted by the traffic news extraction means. Guidance information reflecting the traffic news is output from the notification means, or the route calculation means is recalculated based on the traffic news. As a result, traffic news corresponding to the route selected by the user can be provided to the user.

  According to the sixth aspect of the present invention, when the traffic news extracted by the traffic news extracting means is traffic news indicating that the vehicle is not allowed to pass, the control means is in front of the branchable point immediately before that point. The corresponding traffic news is output from the notification means, the guidance information reflecting the traffic news is output from the notification means, or the route calculation means is recalculated based on the traffic news. As a result, if the traffic news is traffic news indicating that the vehicle is not allowed to pass (for example, “No traffic”, “No entry”, “Broken road”, etc.), the vehicle will pass along the route ahead from that point. It is possible to inform the user that it is impossible.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The in-vehicle navigation system 1 includes a control device 2 (route calculation means, traffic information vocabulary storage means, place name / traffic facility name storage means, traffic news extraction means, control means, traffic news storage means, and traffic news occurrence time storage as used in the present invention. Means, traffic news reception time storage means), position detector 3, map data input device 4, operation switch group 5, transceiver 6, external memory 7, display device 8 (notification means in the present invention), voice controller 9, The voice recognition device 10 (speech recognition means as used in the present invention), a remote control sensor 11 and a radio tuner 12 (broadcast reception means as used in the present invention) are provided.

  The control device 2 includes a CPU, a ROM, a RAM, an I / O interface, a bus for connecting them, and the like (none of which are shown), and is based on various signals input from various functional blocks. Controls overall operations of the system 1 (for example, current position correction, destination setting, route calculation, map scale change, volume adjustment, etc.). The position detector 3 includes a geomagnetic sensor 3a, a gyroscope 3b, a distance sensor 3c, and a GPS receiver 3d, and each component of the position detector 3 has detection errors having different properties. When a detection signal is input from each component of the position detector 3, the control device 2 complements the input detection signals to detect the current position of the vehicle, the traveling direction, the travel distance, and the like. The position detector 3 does not have to include all these components as long as the current position of the vehicle can be detected with the required detection accuracy, and also detects the rotation sensor of the steering wheel and the rotation of each tire. The wheel sensor etc. which perform may be combined and comprised.

  The map data input device 4 stores map data, map matching data, and landmark data transferred from a recording medium such as a DVD-ROM. In this case, the recording medium may be, for example, a CD-ROM, a memory card, and an HDD. The operation switch group 5 includes a mechanical switch disposed around the display device 8 and a touch switch formed on, for example, a color liquid crystal display of the display device 8. The transceiver 6 receives VICS information, weather information, facility information, and the like from the outside (for example, VICS infrastructure, etc.), and transmits vehicle information and user information to the outside.

  The external memory 7 is composed of a large-capacity storage device such as an HDD, and is configured to be able to store data that needs to be saved even when the power is turned off and frequently used data. The display device 8 is composed of, for example, a color liquid crystal display, and displays a current position mark indicating the current position of the vehicle on the map of the map data, or displays an operation screen for the user to set a destination. To do. The display device 8 may be composed of an organic EL, a plasma display, or the like.

  The voice controller 9 controls the voice recognition device 10 based on a control instruction from the control device 2, and is received by the radio tuner 12 after being input from the microphone 13 into the voice recognition device 10 or broadcast from a radio broadcasting station. The voice recognition device 10 performs voice recognition based on a voice recognition algorithm, outputs the voice recognition result to the control device 2, and outputs a voice output signal to the speaker 14 (notification means in the present invention). An operation guidance voice or a warning voice is output from the speaker 14. The remote control sensor 11 receives an operation signal from the remote control 15 by radio waves and outputs it to the control device 2.

  In the present embodiment, the control device 2 stores a speech recognition dictionary for traffic information vocabulary and a speech recognition dictionary for place names / traffic facility names. As shown in FIG. 2A, the traffic information vocabulary speech recognition dictionary indicates correspondence between vocabulary related to traffic information and reading. For example, “congestion”, “closed”, “up” In addition, the correspondence between vocabulary such as “down” and reading is stored. The traffic information vocabulary speech recognition dictionary may be registered by the user himself / herself after purchasing the product, or may be registered by the manufacturer at the stage of manufacturing or shipping the product. It may be registered at the stage where the seller sells the product.

  As shown in FIG. 2B, the place name / traffic facility name speech recognition dictionary indicates a correspondence relationship between a place name or a traffic facility name on the route calculated by the control device 2 and a reading. The correspondence between vocabulary and readings such as “Tomei Expressway”, “Okazaki Interchange”, “Okazaki City” and “National Highway No. 1” is stored.

  Next, the operation of the above configuration will be described with reference to FIG. Here, FIG. 3 shows a process performed by the control device 2 as a flowchart. Here, the description will be made on the assumption that a traffic information vocabulary speech recognition dictionary is registered in the control device 2 in advance and the radio tuner 12 is driven.

  When detecting that the user has performed an operation for setting the destination, for example, the control device 2 calculates a route from the current position to the destination (step S1), for example, a time-priority route or a distance-priority route. Several routes, such as a highway priority route and a general road priority route, are created as a route list (step S2). And the control apparatus 2 extracts the place name and traffic equipment name on a path | route based on the created some path | routes (step S3), and produces the speech recognition dictionary of a place name and traffic equipment name (step S4). Specifically, if the calculated route passes, for example, around “Okazaki City”, as shown in FIG. 2 (b), the “Tomei Expressway”, “Okazaki Interchange”, Create a speech recognition dictionary of place names and transportation equipment names including "Okazaki City" and "National Route 1".

  Next, the control device 2 causes the speech recognition device 10 to recognize the sound of the radio broadcast broadcast from the radio broadcast station and received by the radio tuner 12 (step S5), and recognizes the traffic information vocabulary stored in advance. The traffic news is extracted from the voice of the radio broadcast with reference to the dictionary and the voice recognition dictionary of the place name / traffic equipment name created based on the route (step S6). More specifically, when the control device 2 recognizes, for example, a sentence “Okazaki Interchange is crowded” from a radio broadcast, “congestion” is registered in the speech recognition dictionary of the traffic information vocabulary and the traffic information Since “Okazaki Interchange” is registered in the vocabulary speech recognition dictionary, the sentence is extracted as traffic news from the radio broadcast.

  Next, for the extracted traffic news, the control device 2 “location” indicating the place name and the name of the traffic facility, “coordinate” indicating the coordinates of the place name and the name of the traffic facility on the map data, the traffic information vocabulary (traffic information) “Level” indicating the contents of the traffic news list), and a traffic news list including them as a constituent element is created (step S7). In this case, the control device 2 stores “reception time” indicating the time when the traffic news is received by the radio tuner 12, and when the traffic news includes the time when the traffic information phenomenon occurs, The “occurrence time” indicating the time when the traffic information phenomenon occurs is also stored. In addition, the control device 2 is highly important and urgent, such as “no traffic”, “accident occurrence”, and “fire”, and if the storage area has enough space (ensure sufficient storage area) If so, the traffic news audio is stored as an “audio file”.

  Then, the control device 2 reproduces the traffic news created in this way and outputs it from the speaker 14 or outputs guidance information (for example, traffic jam information or accident information) reflecting the traffic news from the speaker 14. The route is recalculated based on the traffic news (step S8). In this way, the control device 2 provides the user with traffic news included in the radio broadcast broadcast from the radio broadcast station and received by the radio tuner 12.

  Further, when the control device 2 detects that the user has performed an operation of designating the display mark while displaying the display mark indicating the position of the place name or the name of the traffic facility on the display device 8, the position of the display mark The traffic news corresponding to is reproduced and output from the speaker 14, guidance information reflecting the traffic news is output from the speaker 14, or the route is recalculated based on the traffic news.

  By the way, the control device 2 updates a voice recognition dictionary and traffic news list of place names / traffic facility names in accordance with the following procedure, thereby creating a storage area for storing the latest place names / traffic facility names and traffic news. Secured. That is, the control device 2 indicates that the vehicle has reached the destination, the fact that the vehicle has passed the place of the place name or the name of the traffic facility registered in the speech recognition dictionary of the place name / traffic facility name, and the current position of the vehicle. When it is detected that the vehicle will not run from the relationship with the destination, the place name and traffic equipment name are deleted from the place name / traffic equipment name speech recognition dictionary and the place name / traffic equipment name speech recognition dictionary is updated. The corresponding traffic news is deleted from the traffic news list and the traffic news list is updated.

  In addition, the control device 2 monitors the reception time and occurrence time of the traffic news list, deletes the traffic news that has passed a predetermined time (for example, 24 hours) from the reception time and occurrence time, and deletes the traffic news from the traffic news list. Update. In this case, traffic information (for example, “congestion”) in which the phenomenon is easy to be resolved is automatically deleted without inquiring the user whether or not the traffic information can be deleted. On the other hand, traffic information in which the phenomenon is difficult to be resolved (for example, “block”). Or “accident” or the like), the user may be inquired as to whether or not to delete, and may be deleted on the condition that the user understands.

  In addition, the control device 2 reproduces traffic news corresponding to the route selected by the user from among a plurality of routes and outputs the traffic news from the speaker 14 or outputs guidance information reflecting the traffic news from the speaker 14. The route is recalculated based on the news, but the traffic news corresponding to the route that was not selected is treated as reference information, and the route based on the traffic news is not played back. Is not recalculated.

  In addition, when the traffic news is traffic news (for example, “block”) indicating that the vehicle is not allowed to pass (for example, “block”), the control device 2 is in front of the branchable point immediately before that point. The corresponding traffic news is reproduced and output from the speaker 14, guidance information reflecting the traffic news is output from the speaker 14, or the route is recalculated based on the traffic news.

  As described above, according to the present embodiment, when the route is calculated in the in-vehicle navigation system 1, the place name and traffic equipment name on the calculated route are stored, transmitted from the radio broadcasting station, and transmitted by the radio tuner 12. Received radio broadcast voice is recognized, radio broadcast voice including pre-stored vocabulary related to traffic information and previously stored place names and traffic facility names is extracted as traffic news, and extracted Since it is configured to play traffic news and output it from the speaker 14, to output guidance information reflecting the traffic news from the speaker 14, or to recalculate the route based on the traffic news, the radio broadcast is received. If it is possible to do so, even if the VICS infrastructure is not in place, It is possible to properly provide the traffic news on the path to try to row to the user.

The present invention is not limited to the above-described embodiment, and can be modified or expanded as follows.
Not only radio broadcasts broadcast from radio broadcast stations and received by radio tuners, but also TV tuners are provided to extract traffic news from audio of TV broadcasts broadcast from TV broadcast stations and received by TV tuners. There may be. Moreover, the structure which extracts a traffic news from the image | video of a television broadcast by providing a video recognition apparatus may be sufficient. In that case, the configuration may be such that the television broadcast sound is continuously recognized, and the television broadcast image is intermittently recognized, for example, every few seconds.
The configuration is not limited to the configuration in which the control device stores the speech recognition dictionary of traffic information vocabulary, the location name / traffic facility name speech recognition dictionary, and the traffic news list, but may be configured to store them in an external memory or another storage device. .

Functional block diagram showing an embodiment of the present invention The figure which shows the speech recognition dictionary of the traffic information vocabulary, the speech recognition dictionary of the place name / transportation equipment name, and the traffic news list flowchart

Explanation of symbols

  In the drawings, 1 is an in-vehicle navigation system, 2 is a control device (route calculation means, traffic information vocabulary storage means, place name / traffic facility name storage means, traffic news extraction means, control means, traffic news storage means, traffic news occurrence time storage. Means, traffic news reception time storage means), 8 a display device (notification means), 10 a voice recognition device (voice recognition means), 12 a radio tuner (broadcast reception means), and 14 a speaker (notification means).

Claims (6)

An in-vehicle navigation system comprising route calculation means for calculating a route and broadcast receiving means for receiving a broadcast broadcast from a broadcast station,
Traffic information vocabulary storage means for storing vocabulary related to traffic information;
A place name / transportation facility name storage means for storing a place name and a traffic facility name on the route calculated by the route calculation means;
Voice recognition means for recognizing the voice of the broadcast received by the broadcast receiving means;
Broadcast audio including vocabulary stored in the traffic information vocabulary storage means and place names and traffic facility names stored in the place name / traffic facility name storage means from broadcast sounds recognized by the voice recognition means Traffic news extraction means for extracting traffic news as traffic news;
The traffic news extracted by the traffic news extraction means is output from the notification means, the guide information reflecting the traffic news is output from the notification means, or the route calculation means is recalculated based on the traffic news. An on-vehicle navigation system comprising a control means for controlling the vehicle. In the in-vehicle navigation system according to claim 1,
Traffic news storage means for storing traffic news extracted by the traffic news extraction means;
When the control unit displays a display mark indicating the position of the place name and the name of the traffic facility name stored in the place name / transportation facility name storage unit on the display device and the user performs an operation of specifying the display mark, Of the traffic news stored in the traffic news storage means, traffic information corresponding to the position of the display mark is output from the notification means, or guidance information reflecting the traffic news is output from the notification means. An in-vehicle navigation system, wherein the route calculation means is caused to recalculate the route based on the above. In the in-vehicle navigation system according to claim 1 or 2,
Traffic news reception time storage means for storing a time when a broadcast containing traffic news is received by the broadcast receiving means as a traffic news reception time,
The in-vehicle navigation system characterized in that the control means manages the storage state of traffic news in the traffic news storage means based on the reception time stored in the traffic news reception time storage means. In the in-vehicle navigation system according to claim 1 or 2,
Traffic news occurrence time storage means for storing a time when a traffic information phenomenon included in the traffic news extracted by the traffic news extraction means occurs as a traffic news occurrence time,
The in-vehicle navigation system characterized in that the control means manages the storage state of traffic news in the traffic news storage means based on the occurrence time stored in the traffic news occurrence time storage means. In the in-vehicle navigation system according to any one of claims 1 to 4,
The control means outputs from the informing means the traffic news corresponding to the route selected by the user from among the plurality of routes extracted from the traffic news extracted by the traffic news extracting means, or guide information reflecting the traffic news Is output from the notification means, or the route calculation means is caused to recalculate the route based on the traffic news. The in-vehicle navigation system according to any one of claims 1 to 5,
When the traffic news extracted by the traffic news extraction means is traffic news indicating that the vehicle is not allowed to pass, the control means notifies the relevant traffic news immediately before the branchable point immediately before that point. An in-vehicle navigation system, characterized in that information is output from the means, guidance information reflecting the traffic news is output from the notification means, or the route calculation means is recalculated based on the traffic news.

Images