JP4232697B2 - Car navigation system - Google Patents

Description

  The present invention relates to an in-vehicle navigation device.

2. Description of the Related Art Conventionally, an in-vehicle navigation device that can display the latest facility location information that is not registered in a preinstalled package medium or the like has been proposed (see, for example, Patent Document 1). According to the in-vehicle navigation device disclosed in Patent Document 1, for example, the latest information on the location information of the latest facility that is not registered in the package media or the like is requested via the communication to the external information transmission device. Send the facility's phone number. Then, the external information transmitting device searches for the requested location information of the latest facility based on the transmitted telephone number, and transmits the search result to the device. The device displays the received location information of the latest facility on a map.
JP-A-8-161691

  In the conventional vehicle-mounted navigation device described above, when the facility desired by the user has moved, the location information of the facility after the transfer is searched by transmitting the telephone number of the facility after the transfer to an external information transmitting device. I was able to. However, if the user does not know that the desired facility has moved, the user knows the telephone number of the facility before the transfer, but does not know the phone number of the facility after the transfer. As a result, the user could not retrieve the location information of the facility after the relocation.

  Such a problem may also occur when a desired facility is searched using map data including facility data registered in advance in package media or the like. That is, the user cannot access the facility data after the transfer unless he / she knows only information (for example, telephone number) regarding the facility before the transfer.

  The present invention has been made in view of the above points, and even when the facility desired by the user has moved, the location information of the transferred facility can be known from the facility information before the transfer. It is an object of the present invention to provide a possible in-vehicle navigation device.

In order to achieve the above object, an in-vehicle navigation device according to claim 1,
Map data storage means for storing map data including facility data relating to facilities on the map data;
An input means for inputting conditions for searching for a destination;
A search means for searching for facility data that satisfies the input conditions,
If the facility has transferred, Rutotomoni is added relocation data transfer before the facility data, when transferring the number of facilities is plural, each facility data before transfer, transferee data is added for the last transferee ,
The retrieval means retrieves facility data including data matching the destination data when the destination data is added to the retrieved facility data.

  As described above, in the in-vehicle navigation device according to the first aspect, when the facility is relocated, the relocation destination data is added to the facility data before relocation. Therefore, when the user inputs information about facility data before transfer as a search condition by the input means and the corresponding facility data is searched, the transfer destination data is added to the facility data. The retrieval means can retrieve the facility data of the relocation destination based on the relocation destination data. Thereby, even if the facility desired by the user has moved, the location information of the transferred facility can be known from the facility information before the transfer.

Furthermore, according to the vehicle navigation system of claim 1, when transferring the number of facilities is plural, each facility data before transfer, Ru transferee data is added for the last transfer destination. In other words, considering that the user inputs information related to facility data related to any facility before the transfer as a search condition, the transfer destination data regarding the final transfer destination is added to all the facility data before the transfer.

As described in claim 2 , the facility data includes a facility ID unique to each facility, and when the facility is moved, the facility ID of the facility after the transfer is changed from the facility ID of the facility before the transfer and moved. The destination data is preferably the changed facility ID of the destination. Thereby, the facility ID of the facility after the transfer is acquired from the transfer destination data, and the facility of the transfer destination can be searched by searching the facility data having the same facility ID as the facility ID of the transfer destination.

As described in claim 3 , the relocation data may be a relocation address or a relocation telephone number. Thereby, the facility of the transfer destination can be searched by searching the facility data having the same address or telephone number as the address of the transfer destination or the telephone number of the transfer destination.

As described in claim 4 , when the transfer destination data is added to the facility data, it is possible to provide notifying means for notifying that the facility has moved. Thereby, the user can recognize that the desired facility has moved.

Moreover, the vehicle-mounted navigation device according to claim 5
Map data storage means for storing map data including facility data relating to facilities on the map data;
An input means for inputting conditions for searching for a destination;
A search means for searching for facility data that satisfies the input conditions;
The facility data includes a facility ID unique to each facility, and the map data storage means stores the facility data before the transfer and the facility data after the transfer with the facility ID of the facility in common when the facility is transferred. The facility data is added with the number of times the facility has been transferred, and the search means searches for the facility having the maximum number of times of transfer among all the facilities having the same facility ID.

  By doing in this way, the last transfer destination can be easily searched while making the facility ID common. Thereby, even if the facility desired by the user has moved, the location information of the transferred facility can be known from the facility information before the transfer.

As described in claim 6, when the number of times of relocation is added to the facility data, a notification means for notifying that the facility has been relocated may be provided. Thereby, the user can grasp that the desired facility has moved.

According to a seventh aspect of the present invention , there is provided instruction means for instructing the search means to stop the search, and when the instruction means instructs to stop the search, the search means may stop the facility search. Thus, when it is recognized that the facility has moved, it is conceivable that the facility is not desired to be searched. At this time, it is possible to cancel the facility search by providing the instruction means.

(First embodiment)
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram illustrating a schematic configuration of an in-vehicle navigation device 100 according to the present embodiment. Hereinafter, the in-vehicle navigation device according to the present embodiment will be described in detail.

  The navigation device 100 includes a position detector 10, a digital road map database 20, a computer 30, a display unit 40, an operation switch group 50, an audio output unit 60, an audio input unit 70, an external memory 80, and a VICS receiver 90. Yes.

  The computer 30 includes a known CPU, ROM, RAM, I / O, and a bus line for connecting these components. In the ROM, a program to be executed by the computer 30 is written, and a CPU or the like executes predetermined arithmetic processing according to this program.

  The position detector 10 includes a GPS receiver 11 for a global positioning system (GPS) that measures the position of a vehicle based on radio waves from a satellite, a geomagnetic sensor 12 for detecting the absolute direction of the vehicle, and a relative direction of the vehicle. Has a steering sensor 13 for detecting. Further, the position detector 10 includes a vehicle speed sensor 14 for detecting a travel distance from the travel speed of the vehicle.

  As described above, the position detector 10 includes the GPS receiver 11 for vehicle position measurement by radio wave navigation, and the geomagnetic sensor 12, the steering sensor 13, and the vehicle speed sensor 14 for vehicle position estimation by self-contained navigation. ing. Further, the radio navigation is not limited to the GPS, but, for example, a VICS optical beacon may be used. Further, in order to detect the relative orientation of the vehicle in the self-contained navigation, a gyro sensor or wheel speed sensors provided on the left and right wheels of the vehicle may be used instead of the steering sensor 13.

  The digital road map database 20 is a device for inputting digital map data including road data, background data, character data, facility data, and the like to the computer 30. The digital road map database 20 has an information storage medium 21 for storing digital map data. As the information storage medium 21, a CD-ROM or a DVD-ROM is generally used depending on the data amount. A card, a hard disk, or the like may be used.

  Here, the configuration of road data will be described. The road data is composed of data such as a link ID with a unique number for each road, link coordinate data, node coordinate data, road type data indicating a road type such as an expressway or a national road, and road width data. . The link in the road data is obtained by dividing each road on the map into a plurality of nodes by nodes indicating intersections, branch points, etc., and defining a link between the two nodes. The link coordinate data describes the start and end coordinates of this link. When a node is included in the middle of the link, the node coordinates are described in the node coordinate data. In addition to displaying a map, this road data is used to give the shape of a road when performing map matching processing, or used when searching for a guide route to a destination.

  The background data is data for displaying the facility shape, natural terrain, and the like to be displayed other than the road when the road map is displayed on the display unit 40. The character data is for displaying place names, facility names, road names, and the like on the road map, and is configured as data in which coordinates on the map corresponding to the display positions are associated.

  The structure of the facility data according to this embodiment will be described with reference to FIG. As shown in FIG. 2, the information includes a facility ID 301 with a unique number for each facility, a facility name 302, a facility address 303, a facility telephone number 304, and the like. Even if the facility has moved, the digital road map database 20 stores the facility data before the transfer of the transferred facility without deleting it. However, the facility data before relocation is not treated as display data. Then, the facility ID 305 of the relocation destination with a unique number is assigned as relocation destination data to the facility data before relocation. This facility data may be stored in an external memory 80 described later.

  The display unit 40 is configured by, for example, a liquid crystal display, and the vehicle generated by the vehicle position mark corresponding to the current position of the vehicle on the screen of the display unit 40 and the map data input from the digital road map database 20. The surrounding road map can be displayed. When a destination is set, a guide route from the current position to the destination is displayed on the road map in an overlapping manner.

  The operation switch group 50 includes, for example, a touch panel switch integrated with the display unit 40 or a mechanical switch provided around the display unit 40, and is used for various inputs.

  The voice output unit 60 includes a speaker or the like, and outputs a guidance voice when route guidance is being performed, or outputs a guidance related to an input voice at the time of voice recognition. The voice input unit 70 is composed of a microphone or the like, and takes in a voice uttered by the user and inputs it to the computer 30. The computer 30 performs a process for recognizing the input voice, and executes various controls based on the recognition result.

  The external memory 80 is composed of a storage medium such as a memory card or a hard disk. The external memory 80 stores various data such as text data, image data, and audio data stored by the user.

  The VICS receiver 90 receives information such as road traffic information distributed from the VICS center via beacons laid on the road and FM broadcast stations in various places, and sends information from the vehicle side to the outside as necessary. It is a device that transmits. The received information is processed by the computer 30. For example, traffic jam information, speed limit information, and the like are superimposed on the road map displayed on the display unit 40.

  In addition, when the position of the destination is input by the operation switch group 50 or voice recognition, the in-vehicle navigation device 100 according to the present embodiment automatically selects the optimum route from the current position to the destination and guides the route. A so-called route guidance function is also provided. As a method for automatically setting an optimum route, a known method such as the Dijkstra method is known. In addition, for example, a search function for searching for the position of a facility or the like from an address, a facility name, a telephone number or the like input by the user is also provided.

  These functions are executed mainly by the computer 30 performing various arithmetic processes. In other words, when the destination is input, the computer 30 calculates a route using the map data of the digital road map database 20, displays the route, and enlarges the road map and voices at a branch point or an intersection to turn left or right. Provide guidance. In addition, the computer 30 displays the own vehicle position mark indicating the position of the vehicle and the surrounding road map on the display unit 40, or changes the scale of the road map.

  Next, route search processing in the present embodiment will be described in detail with reference to the flowcharts of FIGS. FIG. 3 is a flowchart showing a main routine of route search processing, and FIG. 4 is a flowchart showing a routine of destination setting processing.

  First, in step S10 of FIG. 3, the current position of the vehicle is detected. At this time, the position data by the GPS receiver 12a is acquired in the same form as the coordinate data (latitude and longitude) of the road data described above. In addition, the geomagnetic sensor 12, the steering sensor 13, and the vehicle speed sensor 14 acquire data related to the traveling direction and travel distance of the host vehicle, and calculate the coordinate data of the current position based on the vehicle position calculated or determined in the past. Perform (calculation of coordinate data by self-contained navigation). The current position is basically obtained based on coordinate data calculated by self-contained navigation. However, when the position data by the GPS receiver 11 is acquired, the two are compared, and when the difference is equal to or greater than a predetermined distance, the position data by the GPS receiver 11 is adopted as the current position.

  In step S <b> 20, map data of the surrounding map including the current position of the vehicle is read from the digital road map database 20, and the road map is displayed on the display unit 40. In step S30, it is determined whether or not a destination is set. If it is determined that the destination is not set, the process returns to step S10. On the other hand, if it is determined that the destination is set, the process proceeds to step S40.

  In step S40, a destination setting process is executed. This destination setting process will be described using the flowchart of FIG. 4 and the facility data of FIG. As a specific example, the description will be made assuming that a telephone number “000-123-4567” is input as a search condition.

  In the flowchart of FIG. 4, first, in step S110, a search condition input standby state is set. Specifically, for example, a destination setting menu is displayed on the display unit 40. This destination setting menu includes “search by name”, “search by address”, “search by phone number”, and the like. The user selects one of the destination setting menus and inputs a search condition corresponding to the selected menu. According to the above-described example, the user selects “Search by telephone number”, and the telephone number “000-123-4567” of the facility desired by the user is input as a search condition.

  Next, in step S120, the facility data with the telephone number that matches the telephone number “000-123-4567” input in step S110 is searched. If the facility data 401 (FIG. 5) satisfying the telephone number “000-123-4567” (search condition) is searched, the process proceeds to step S140. In step S140, it is determined whether or not the facility data 401 searched in step S120 has a destination facility ID. If it is determined that the facility data 401 has the destination facility ID “6587”, the process proceeds to step S150.

  In step S150, the facility data 402 having the same facility ID as the facility ID “6587” of the transfer destination is searched. As described above, the facility ID of the facility after the transfer is acquired from the transfer destination data, and the facility data having the same facility ID as the facility ID of the transfer destination is searched, so that the facility of the transfer destination can be searched. .

  Next, the process returns to step S140, and it is determined again whether the facility ID of the transfer destination is added to the facility data 402. If not, the process proceeds to step S160. In step S160, the location information of the facility data 402 is output. In step S170, it is determined whether or not the facility corresponding to the facility data 402 is set as the destination. If it is determined that the destination is not set, the process is terminated. On the other hand, if it is determined that the destination is set, the process proceeds to step S180. In step S180, the facility corresponding to the facility data 402 is set as the destination.

  On the other hand, if it is determined in step S120 that there is no facility data that satisfies the search condition input in step S110, the process proceeds to step S130. In step S130, an error is notified. Specifically, for example, the message “No facility that satisfies the search condition” is displayed on the display unit 40 and is also output by voice via the voice output unit 60.

  Returning to the flowchart of FIG. 3, unless otherwise specified, in step S50, the current position detected in step S10 is set as the departure point, and the route to the destination set in step S40 is determined by a technique such as the Dijkstra method. Explore. In step S60, the route searched in step S50 is displayed. Specifically, a display control unit (not shown) highlights the searched route on the road data and displays it on the display unit 40. In step S70, route guidance is performed based on the route searched in step S50.

  As described above, according to the present embodiment, when a facility is relocated, relocation data is added to the facility data before relocation. Therefore, when the user inputs information about facility data before the transfer as a search condition and the corresponding facility data is searched, the destination data is added to the facility data. The facility data of the relocation destination can be searched based on the relocation destination data. Thereby, even if the facility desired by the user has moved, the location information of the transferred facility can be known from the facility information before the transfer.

(Modification)
In the first embodiment described above, an example in which a facility ID of a transfer destination is assigned to the facility data every time the facility is moved once has been described. However, if the facility has been relocated multiple times, the facility data of the relocation destination regarding the last relocation destination is added to the facility data, and the facility ID that matches the facility ID of the relocation destination is attached. You can also search for facilities. In other words, considering that the user inputs information related to facility data related to any facility before the transfer as a search condition, the transfer destination data regarding the final transfer destination is added to all the facility data before the transfer.

  Further, in the first embodiment described above, the example in which the transfer destination data is the facility ID of the transfer destination has been described. However, the transfer destination data may be a transfer destination address or a transfer destination telephone number. In this way, it is possible to search for the facility of the relocation destination based on the relocation address or the relocation destination telephone number.

  Further, in the first embodiment described above, when the facility ID of the transfer destination is added to the facility data, the search is stopped by notifying the user that the facility has been moved, and providing a search stop switch or the like. You may be able to do. Thereby, the user can recognize that the desired facility has moved. Furthermore, when it is recognized that the facility has moved, it may be that the facility is not desired to be searched. In this case, the facility search can be canceled.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. The in-vehicle navigation device according to the present embodiment has the same configuration as the in-vehicle navigation device 100 according to the first embodiment described above. For the main routine of the route search process, the in-vehicle navigation device according to the second embodiment performs the same process as the in-vehicle navigation device 100 according to the first embodiment. Therefore, descriptions of these configurations and main routine processing will be omitted.

  The difference between the in-vehicle navigation device according to the first embodiment and the second embodiment is in destination setting processing. In the second embodiment, even if a facility is relocated, the facility ID is not changed, the facility data is assigned the number of times of relocation, and the facility with the maximum number of relocations is searched as the last relocation destination facility. To do.

  Hereinafter, the destination setting process in the second embodiment will be specifically described based on the flowchart of FIG. 6 and the facility data of FIG. As a specific example, the description will be made assuming that an address “A prefecture B city C town 4-12” is input as a search condition.

  First, in step S210, a search condition input standby state is set, and, for example, according to the above-described example, the address “A prefecture B city C town 4-12” of the facility desired by the user is input as the search condition. In step S220, the facility data with the address matching the address “A prefecture B city C town 4-12” input in step S210 is searched. If the facility data 501 satisfying the address “A prefecture B city C town 4-12” (search condition) (FIG. 7) is searched, the process proceeds to step S240. In step S240, it is further searched whether there is another facility data having the same facility ID as the facility ID “123” of the facility data 501. If the facility data with the same facility ID “123” as the facility data 501 is searched, for example, the facility data 502 and the facility data 503, the process proceeds to step S250. In step S250, the facility data 503 having the maximum number of transfers “2” is selected from the facility data 502 and the facility data 503, and the position information of the selected facility data 503 is output.

  In step S270, it is determined whether or not the facility corresponding to the facility data 503 is set as the destination. If it is determined that the destination is not set, the process is terminated. On the other hand, if it is determined that the destination is set, the process proceeds to step S280. In step S280, the facility corresponding to the facility data 503 is set as the destination.

  On the other hand, if it is determined in step S240 that there is no facility data with the same facility ID “123” as the facility data 501, the process proceeds to step S260. In step S260, the location information of the facility data 501 that satisfies the search condition in step S220 is output. In step S270, it is determined whether or not the facility corresponding to the facility data 501 is set as the destination. If it is determined that the destination is not set, the process is terminated. On the other hand, if it is determined that the destination is set, the process proceeds to step S280. In step S280, the facility corresponding to the facility data 501 is set as the destination.

  On the other hand, if it is determined in step S220 that there is no facility data that satisfies the search condition input in step S210, the process proceeds to step S230. In step S230, an error is notified.

  As described above, according to the present embodiment, the last transfer destination can be easily searched while the facility ID is common. Thereby, even if the facility desired by the user has moved, the location information of the transferred facility can be known from the facility information before the transfer.

(Modification)
In the second embodiment described above, when the number of relocation destinations is added to the facility data, the search of the facility is canceled by providing a search cancellation switch or the like while notifying the user that the facility has moved. It may be possible. In this way, the user can recognize that the desired facility has moved. Furthermore, when it is recognized that the facility has moved, it may be that the facility is not desired to be searched. At this time, it is possible to cancel the facility search.

It is a block diagram which shows schematic structure of the vehicle-mounted navigation apparatus 100 by 1st Embodiment. It is explanatory drawing which shows the structure of the facility data in 1st Embodiment. It is a flowchart which shows the main routine of the route search process in 1st Embodiment. It is a flowchart which shows the routine of the destination setting process in 1st Embodiment. It is explanatory drawing which shows the example of facility data in 1st Embodiment. It is a flowchart which shows the routine of the destination setting process in 2nd Embodiment. It is explanatory drawing which shows the example of facility data in 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Position detector 11 ... GPS receiver 12 ... Geomagnetic sensor 13 ... Steering sensor 14 ... Vehicle speed sensor 20 ... Digital road map database 21 ... Information recording medium 30 ... Computer 40 ... Display part 50 ... Operation switch group 60 ... Sound output part 70 ... Voice input unit 80 ... External memory 90 ... VICS receiver

Claims (7)

Map data storage means for storing the map data including facility data relating to facilities on the map data;
An input means for inputting conditions for searching for a destination;
Search means for searching for facility data that satisfies the input conditions,
If the facility has been transferred, Rutotomoni is added new address data to the facility data before transfer, the case transfer number of the facility is plural, each facility data before transfer, transferee data about the last transfer destination Is added,
The in-vehicle navigation device characterized in that, when the relocation data is added to the retrieved facility data, the retrieval means retrieves facility data including data that matches the relocation destination data. The facility data includes a facility ID unique to each facility, and when the facility is relocated, the facility ID of the facility after the relocation is changed from the facility ID of the facility before the relocation, and the relocation data is changed. The in-vehicle navigation device according to claim 1 , wherein the facility ID is a destination facility ID. The in-vehicle navigation device according to claim 1 , wherein the relocation data is a relocation address or a relocation telephone number. The in-vehicle navigation system according to any one of claims 1 to 3 , further comprising a notification unit that notifies that the facility has been moved when the destination data is added to the facility data. apparatus. Map data storage means for storing the map data including facility data relating to facilities on the map data;
An input means for inputting conditions for searching for a destination;
Search means for searching for facility data that satisfies the input conditions;
The facility data includes a facility ID unique to each facility, and the map data storage means stores the facility data before the transfer and the facility data after the transfer with the facility ID of the facility in common when the facility is transferred. The facility data after the relocation is added with the number of relocations of the facility, and the search means retrieves the facility having the maximum number of relocations in all the facilities with the same facility ID. In-vehicle navigation device characterized. The in-vehicle navigation device according to claim 5 , further comprising an informing unit that informs that the facility has been relocated when the number of relocations is added to the facility data. An instruction means for instructing to stop the search by the search means;
If the search of the stop is instructed by said instructing means, said searching means, vehicle navigation system according to claim 4 or claim 6, characterized in that stop searching for facilities.

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