JP5390904B2 - Navigation device - Google Patents

Description

  The present invention relates to a navigation device, and more particularly, to a navigation device suitable for facility search using map data.

  Conventionally, in an in-vehicle navigation device, a facility (a store, a dining facility, an accommodation facility) that satisfies a destination condition (name, address, genre, etc.) specified by a user when setting a navigation destination , Leisure facilities, medical facilities, transportation facilities, scenic spots, etc.) using map data, and presenting the search results to the user, the user sets the facility indicated in the search results as the destination It was supposed to be possible.

  By the way, when a user who has lived in an area A in the past visits the area A for the first time in several years, the facility newly established after the user moved from the area A is efficiently searched and set as the destination. It is convenient if you can. However, since the user does not know the name, address or telephone number of the newly established facility, even if the information on the newly established facility is stored in the map data, the information should be used effectively. It was difficult.

  In Patent Document 1, information on the establishment of a facility is created by comparing old and new telephone directory data, and recent information belonging to a desired type retrieved by facility search is created based on the created information on establishment. A technique to arrange the facilities in order of creation has been proposed.

JP 2005-114668 A JP 2002-340586 A

  However, in Patent Document 1, only facilities around the current position of the host vehicle are searched (see paragraph 0021 etc. of Patent Document 1), and only facilities established within the past three years are searched (Patent Document 1). (See paragraph 0022, etc.) of FIG. 2), automatic restrictions are imposed on the search process, and it is difficult for the user to sufficiently search for facilities considering the establishment time of facilities.

  Therefore, the present invention has been made in view of the above points, and can increase the degree of freedom of facility search in consideration of the establishment time of the facility, and thus easily and reliably set a desired destination. An object of the present invention is to provide a navigation device that can perform the above-described operation.

In order to achieve the above-described object, the navigation device according to the present invention includes a map data storage unit that stores map data including facility information that is information indicating a facility attribute, and a creation time that is information indicating a facility creation time. As a search condition input screen in which the information is stored in a state associated with the facility information about the facility and the search condition input screen on which the facility search condition can be input , A specific year and year to identify the operation button with the letters "After" and "Specify Year Range" respectively, and the oldest creation date , latest creation date, and creation date range of the facility being searched A search condition for specifying the establishment date of the facility to be searched by the operation button and the year input field. The search condition input screen display means for displaying on the display section a search condition input screen capable of inputting the creation time specific condition to be entered, and the search condition input screen displayed by the search condition input screen display means A facility search means for searching for a facility that satisfies the establishment time specification condition using the establishment time information stored in the creation time information storage means and the facility information stored in the map data storage means; It is characterized by.

According to such a configuration, the facility search means causes the operation button and the year in which the characters “before year”, “after year”, and “year range designation” shown on the search condition input screen are respectively displayed. It is possible to search for a facility that satisfies the creation time specifying condition input using the input field, using the creation time information stored in the creation time information storage means and the facility information stored in the map data storage means. Therefore, it is possible to increase the degree of freedom of facility search considering the establishment time of the facility.

  Further, map data updating means for updating the map data stored in the map data storage means, and update of the map data before updating and the map data when the map data is updated by the map data updating means. New facilities that are not present in the map data before the update are extracted from the update data, and the update time of the map data is extracted for the new facilities extracted. The establishment date determining means for determining the establishment date of a new facility, and information indicating the creation date determined by the establishment date determination means correspond to the facility information of the new facility as the establishment date information of the new facility. A creation time information recording means for recording in the creation time information storage means in the attached state may be provided.

  According to such a configuration, the update time of the map data is determined as the creation time of a new facility to be added to the map data by updating the map data, and information indicating the determined creation time is newly set. Since the establishment date information can be recorded in the establishment date information storage means as the establishment date information of the facility, the establishment date information can be easily and reliably expanded, and the facility can be searched more appropriately considering the establishment date.

  Further, the search condition input screen display means creates the attribute specifying condition that is a condition for specifying the attribute of the facility to be searched and indicated in the facility information as the search condition input screen. It is possible to display a search condition input screen that can be input as a search condition for facilities other than the time specifying condition, and the facility search means can select a facility that satisfies the attribute specifying condition input on the search condition input screen, You may make it search using the said facility information memorize | stored in the said map data storage means.

  According to such a configuration, it becomes possible to search for facilities under a search condition in which the creation time specifying condition and the attribute specifying condition are combined, and a desired facility can be searched more reliably.

  ADVANTAGE OF THE INVENTION According to this invention, the freedom degree of the search of a facility in consideration of the establishment time of a facility can be raised, and a desired destination can be set easily and reliably by extension.

The block diagram which shows the vehicle-mounted navigation apparatus in embodiment of the navigation apparatus which concerns on this invention Explanatory drawing for demonstrating the correspondence state of facility information and founding year information in embodiment of the navigation apparatus which concerns on this invention Explanatory drawing for demonstrating an example of the transition state of the screen in the case of a facility search in embodiment of the navigation apparatus which concerns on this invention. The figure which shows a genre input screen in embodiment of the navigation apparatus concerning this invention. The figure which shows the narrowing-down item screen in embodiment of the navigation apparatus which concerns on this invention. Explanatory drawing for demonstrating the determination method of the founding year of a new facility in the case of the update of map data in embodiment of the navigation apparatus which concerns on this invention. The flowchart which shows embodiment of the navigation apparatus which concerns on this invention

  Hereinafter, an embodiment of a navigation device according to the present invention will be described with reference to FIGS.

  FIG. 1 shows an embodiment of an in-vehicle navigation device 1 mounted on a vehicle as an embodiment of a navigation device according to the present invention. As shown in FIG. 1, the in-vehicle navigation device 1 in this embodiment is roughly divided into a navigation main unit 2, a GPS receiver 3, an autonomous navigation sensor 4, an input operation unit connected to the navigation main unit 2, respectively. 5. It is comprised by the display 6 and the speaker 7 as a display part.

  The GPS receiver 3 receives GPS information (information on time and orbit) distributed from a GPS satellite (not shown), and outputs the received GPS information to the navigation main unit 2 side.

  The autonomous navigation sensor 4 detects the acceleration of the host vehicle, the vehicle speed, the host vehicle direction, and the like, and outputs the detection result to the navigation main unit 2 side. The autonomous navigation sensor 4 may be a gyro sensor or the like.

  The input operation unit 5 is used for various input operations to the in-vehicle navigation device 1. The input operation unit 5 may be a remote controller, a touch panel of the display 6, a linear encoder, a rotary encoder, or the like.

  Next, the navigation main unit 2 will be described in detail. As shown in FIG. 1, the navigation main unit 2 includes a navigation CPU 11, ROM 12, RAM 14, hard disk drive (HDD) 15 and update data connected to the system bus 10. An interface (I / F) 16 is used.

  Here, the navigation CPU 11 executes various functions of the in-vehicle navigation device 1 such as a facility search function, a route search function, a route guidance function, and a map display function.

  The ROM 12 stores an execution program for the navigation CPU 11, and the navigation CPU 11 executes the functions of the in-vehicle navigation device 1 by executing the execution program.

  Further, the RAM 14 is used for temporarily storing data such as processing results by the navigation CPU 11.

  Furthermore, the hard disk drive 15 functions as map data storage means, and as shown in FIG. 2, the hard disk drive 15 stores a map database (map DB). In this map database, map data including facility information, which is information indicating facility attributes, is stored and managed. FIG. 2 shows the name of each facility as the facility information of each facility managed by assigning an individual identification code (not shown) to each of a plurality of facilities (facility A, facility B, facility C...). The facility information indicating each attribute of the address, telephone number, and genre is shown. Although not shown, the map data includes data such as road data (links, nodes, segments, shape interpolation points, etc.) and background data (points, polylines, polygons, text, etc.).

  In the present embodiment, the hard disk drive 15 also functions as a creation time information storage unit. That is, as shown in FIG. 2, the hard disk drive 15 stores a founding year database (founding year DB). In this founding year database, the creation of a facility as the creation time of the facility is provided as the creation time information. The founding year information, which is information indicating the year, is stored and managed for each facility (facility A, facility B, facility C...) In a state associated with the facility information about each facility. In addition, what is necessary is just to implement | achieve matching with facility information and founding year information by providing the mutually corresponding identification code.

  Next, the navigation CPU 11 will be described in more detail. As shown in FIG. 1, the navigation CPU 11 has a search condition input screen drawing unit 17 as search condition input screen display means as one of its functional blocks. . The search condition input screen drawing unit 17 generates drawing data of a search condition input screen in which facility search conditions can be input via the input operation unit 5, and outputs the generated drawing data to the display 6. Thus, the search condition input screen can be displayed on the display 6.

  In this embodiment, the search condition input screen drawing unit 17 displays the initial search condition input screen when a transition to facility search is instructed by an input operation of the input operation unit 5 on an operation screen such as a navigation menu screen. As a screen, first, a condition item screen 18 as shown in step 1 (ST1) of FIG. 3 is displayed. Here, as shown in step 1 (ST1) of FIG. 3, the condition item screen 18 shows five item buttons 19 that can be selected by the input operation unit 5 in the facility information. An item button 19 in which characters (“name”, “address”, “phone number”, or “genre”) representing each attribute or “by year” is written is included. In such a condition item screen 18, by selecting any one item button 19 using the input operation unit 5, further details regarding the search condition corresponding to the character written on the selected item button 19 are displayed. It is possible to shift to various condition settings.

  For example, the search condition input screen drawing unit 17 displays the condition item screen 18 on the condition item screen 18 when the item button 19 on which “by year” is written is selected using the input operation unit 5. As a search condition input screen on the hierarchy side, a founding year condition input screen 21 as shown in step 2 (ST2) of FIG. 3 is displayed. Here, the founding year condition input screen 21 can input a founding year specifying condition which is a condition for specifying at least one of the oldest founding year and the latest founding year of the found facility as a facility search condition. This is the search condition input screen. Specifically, as shown in step 2 (ST2) of FIG. 3, the founding year condition input screen 21 includes a year input field 22, and the year input field 22 includes the input operation unit 5 as shown in FIG. It is possible to input two years using a hyphen between them. In addition, on the founding year condition input screen 21, “pre-year”, “post-year”, or “year range designation” are indicated as three operation buttons 23 that can be operated by the input operation unit 5. The operation buttons 23 are included. On the founding year condition input screen 21, for example, the same year as “2000-2000” is entered twice in the year input field 22, and then the operation button 23 on which the characters “pre-year” are written is operated. By doing so, the creation year specific conditions for searching for facilities founded before 2000 are entered. In addition, after entering “2000-2000” in the year input field 22 and operating the operation button 23 in which the letters “after year” are operated, the facility founded after 2000 is searched. Specific conditions for the year of establishment will be entered. Furthermore, by entering “2000-2009” in the year input field 22 and operating the operation button 23 on which the characters “year range specification” are operated, it was established after 2000 and before 2009. The specific condition of the founding year to search for a new facility will be entered.

  In addition, as an example of the search condition input screen on the lower layer side for the condition item screen 18 other than the founding year condition input screen 21, the search condition input screen drawing unit 17 displays the characters of “genre” on the condition item screen 18. When the item button 19 is selected using the input operation unit 5, the genre input screen 24 shown in FIG. 4 is displayed as the search condition input screen. As shown in FIG. 4, the genre input screen 24 has characters (“convenience store”, “gas station” indicating the genre of the facility as a plurality of item buttons 25 that can be selected using the input operation unit 5. ”,“ Family ”,“ Parking ”, etc.), respectively, are included. In such a genre input screen 24, when a specific item button 25 is selected using the input operation unit 5, an attribute specification indicating that a facility belonging to the genre indicated by the character written on the selected item button 25 is searched. The condition will be entered. Here, the attribute specifying condition refers to a facility search condition for specifying an attribute of the facility to be searched and indicated in the facility information (see FIG. 2) (hereinafter the same).

  Returning to FIG. 1, the navigation CPU 11 has a facility search unit 27 as a facility search means as one of its functional blocks. The facility search unit 27 searches for a facility that satisfies the founding year specific conditions input on the founding year condition input screen 21 using the founding year information and the facility information stored in the hard disk drive 15. That is, the facility search unit 27 extracts the establishment year information that satisfies the specific conditions of the founding year from the facility year database, and then extracts the facility information corresponding to the extracted founding year information from the map database. Search for facilities that satisfy specific conditions. In addition to this, the facility search unit 27 uses the facility information to select a facility that satisfies the attribute specifying condition input on the search condition input screen on the lower hierarchy side with respect to the condition item screen 18 such as the genre input screen 24. It comes to search.

  The navigation CPU 11 has a search result drawing unit 28 as one of its functional blocks. The search result drawing unit 28 generates drawing data of the search result of the facility search unit 27 and is generated. By outputting the drawing data to the display 6, the search result of the facility search unit 27 is displayed on the display 6. For example, the search result drawing unit 28 displays a facility list display screen 29 as shown in step 3 (ST3) of FIG. Here, the facility list display screen 29 includes a display item 30 in which names (facility a to d) of facilities (a plurality of facilities in FIG. 3) searched by the facility searching unit 27 are written. The display item 30 can be selected using the input operation unit 5. The facility list display screen 29 includes a destination setting button 32, and the destination setting button 32 can also be operated using the input operation unit 5. Further, the facility list display screen 29 includes a refinement search instruction button 33, and this refinement search instruction button 33 can also be operated using the input operation unit 5.

  In such a facility list display screen 29, when the destination setting button 32 is operated after the specific display item 30 is selected using the input operation unit 5, the selected display item 30 is displayed. The corresponding facility will be set as the destination. For the waypoints, for example, by adopting a screen configuration such as displaying a waypoint setting button (an operation button that can be set as a waypoint through the selected display item 30) on the facility list display screen 29, It is possible to set the waypoints after searching for facilities in consideration of the founding year.

  On the other hand, when the refinement search instruction button 33 is operated on the facility list display screen 29, the search condition input screen drawing unit 17 displays the refinement item screen 36 as shown in FIG. Yes. As shown in FIG. 5, the narrowed-down item screen 36 has a search condition (in FIG. 5, a search condition other than the search condition used in searching for facilities displayed in the facility list display screen 29 (the creation year specific condition in FIG. 5)). Includes an item button 37 on which characters indicating attribute specifying conditions) are written. This item button 37 can be selected by the input operation unit 5. When the specific item button 37 is selected using the input operation unit 5 on the narrowed-down item screen 36, the search condition input screen drawing unit 17 inputs the search condition described in the selected item button 37. A search condition input screen for narrowing search that is enabled is displayed on the display 6. For example, when the item button 37 in which “genre” is written is selected on the refined item screen 36, the search condition input screen drawing unit 17 shows a search condition input screen for refined search as shown in FIG. Then, an input screen such as a genre (attribute specifying condition) such as the genre input screen 24 is displayed. When the search condition for narrowing-down is input using the input operation unit 5 to the search condition input screen for narrowing-down search, the facility search unit 27 selects the search result of the current facility. A refined search for narrowing down facilities satisfying the search conditions for refinement is performed, and the search result is displayed on the display 6. Note that the search result of the narrow search may be a screen similar to the facility list display screen 29 shown in step 3 of FIG.

  Returning to FIG. 1, the navigation CPU 11 has a destination setting unit 34 as one of its functional blocks. The destination setting unit 34 has an operation screen for setting a destination (for example, the facility described above). A navigation destination is set according to the input operation of the input operation unit 5 for the list display screen 29).

  In addition, the navigation CPU 11 has a waypoint setting unit 35 as one of its functional blocks. Set the waypoints for navigation.

  According to such a configuration, a facility that satisfies the founding year specific condition input in the founding year condition input screen 21 displayed by the facility search unit 27 by the search condition input screen drawing unit 17 Since it is possible to search using information, it is possible to increase the degree of freedom in searching for a facility in consideration of the establishment year of the facility. Further, since the search condition input screen rendering unit 17 can display a search condition input screen in which the attribute specifying condition can be input as the search condition input screen, the founding year specifying condition and the attribute specifying condition are combined. It is also possible to search for facilities under the search conditions (restriction search), and to search for a desired facility more reliably.

  In addition to the above configuration, in the present embodiment, the navigation CPU 11 further includes a map data update unit 39 as a map data update unit as one of its functional blocks. The map data update unit 39 acquires update data used for updating map data from the external device (computer or SD memory card) via the update data interface 16 and uses the acquired update data to obtain a hard disk. The map data stored in the drive 15 is updated. Note that the update data may be difference data indicating a changed portion with respect to the map data currently stored in the hard disk drive 5.

  In addition, the navigation CPU 11 has a founding year determination unit 40 as a founding time determining means as one of its functional blocks. When the map data update unit 39 updates the map data, the founding year determination unit 40 updates the map data before update and the map data currently stored in the hard disk drive 15 as shown in FIG. The update data to be used is compared. As a result of this comparison, a new facility that does not exist in the map data before update is extracted from the update data. In FIG. 6, the facility E is extracted as a new facility. Then, the founding year determination unit 40 determines, for the extracted new facility, the year to which the update date of the map data as the update time of the map data belongs as the founding year of the new facility. In addition, about the update date of the map data used for the determination of the founding year, for example, when updating the map data, the update date information indicating the update date is manually input to the in-vehicle navigation device 1 and input. Based on the updated date information, the founding year determination unit 40 may be made to know the updated date. Alternatively, the creation date determination unit 40 automatically obtains the update date information via the Internet connection function provided in the vehicle-mounted navigation device 1 or the radio receiver connected to the vehicle-mounted navigation device 1. You may make it grasp.

  In addition, in the case where the date of creation of the update data is described in the update data as the additional information of the update data, the founding year determination unit 40 determines the year to which the date of creation of the update data belongs. You may make it determine with a founding year.

  Furthermore, as shown in FIG. 1, the navigation CPU 11 has a founding year recording unit 41 as a founding time information recording means as one of its functional blocks. The founding year recording unit 41 records information indicating the founding year determined by the founding year determining unit 40 on the hard disk drive 15 in association with the facility information of the new facility as the founding year information of the new facility. It is like that.

  According to such a configuration, the year to which the update date of the map data belongs is determined as the founding year of the new facility where the facility information is added to the map database by updating the map data, and information indicating the determined founding year Can be recorded in the hard disk drive 15 as information on the year of establishment of the new facility, so that information on the year of establishment can be easily and reliably expanded.

  In addition to the above configuration, the in-vehicle navigation device 1 has various configurations for navigation.

  That is, as shown in FIG. 1, the navigation CPU 11 has a vehicle position calculation unit 42 as one of its functional blocks, and the vehicle position calculation unit 42 outputs a signal from the GPS receiver 3. The GPS information and the detection result output from the autonomous navigation sensor 4 are input. And the own vehicle position calculation part 42 performs the satellite navigation which calculates (detects) an own vehicle position as an absolute coordinate based on the GPS information input from the GPS receiver 3 side. In addition, the vehicle position calculation unit 42 performs autonomous navigation that calculates (detects) the vehicle position as a relative position that is a change from the previous positioning position based on the detection result input from the autonomous navigation sensor 4 side. To do. Further, the own vehicle position calculation unit 42 uses the map data stored in the hard disk drive 15 to correct the own vehicle position calculated by satellite navigation or autonomous navigation to the corresponding position on the road in the map data. Map matching processing is performed. When the map matching process is properly performed, the own vehicle position calculation unit 42 uses the own vehicle position after the map matching process as a final calculation result.

  The navigation CPU 11 has a route search unit 43 as one of its functional blocks. The route search unit 43 uses the map data stored in the hard disk drive 15 to calculate the vehicle position. Route calculation for searching for a route (for example, a recommended route) from the vehicle position calculated by the unit 42 to the destination set by the destination setting unit 34 is performed.

  Furthermore, the navigation CPU 11 has a route guidance unit 45 as one of its functional blocks. The route guidance unit 45 moves the host vehicle to the destination along the route searched by the route search unit 43. The route guidance (in other words, route guidance) to guide is performed. This route guidance is performed by, for example, displaying an enlarged view of an intersection on the display 6 or outputting an audio for guiding an intersection turn right or left via the speaker 7.

  Next, an example of the effect | action of the vehicle-mounted navigation apparatus 1 in this embodiment is demonstrated.

  In this embodiment, first, as shown in step 11 (ST11) of FIG. 7, it is determined whether or not an instruction to shift to the facility search is instructed by using the input operation unit 5, and if instructed, Proceeding to step 12 (ST12), if not instructed, step 11 (ST11) is repeated.

  Next, in step 12 (ST12), the search condition input screen drawing unit 17 displays the condition item screen 18 in the search condition input screen shown in step 1 (ST1) of FIG.

  Next, in step 13 (ST13), the search condition input screen drawing unit 17 determines whether any one item button 19 is selected using the input operation unit 5 on the condition item screen 18, and the selection is made. If so, the process proceeds to step 14 (ST14). If not selected, step 13 (ST13) is repeated.

  Next, in step 14 (ST14), whether or not the item button 19 selected in step 13 (ST13) by the search condition input screen drawing unit 17 is the item button 19 in which the characters “by year” are written. If so, the process proceeds to step 15 (ST15), and if the item button 19 has characters other than “by year”, the process proceeds to step 23 (ST23).

  Next, in step 15 (ST15), the search condition input screen drawing unit 17 displays the founding year condition input screen 21 shown in step 2 (ST2) of FIG. 3 and proceeds to step 16 (ST16).

  On the other hand, in step 23 (ST23), the search condition input screen drawing unit 17 performs a search condition input screen (for example, as shown in FIG. 4) according to items other than “by year” selected in step 14 (ST14). The genre input screen 24) is displayed and the process proceeds to step 24 (ST24).

  Next, in step 16 (ST16), the facility search unit 27 determines whether or not a founding year specific condition has been input using the founding year condition input screen 21, and if so, step 17 (ST17). If it is not input, step 16 (ST16) is repeated. Although not shown, when an input operation for returning to the previous screen is performed on the founding year condition input screen 21, the search condition input screen drawing unit 17 displays the condition item screen 18 again.

  On the other hand, in step 24 (ST24), the facility search unit 27 determines whether or not an attribute specifying condition is input to the search condition input screen displayed in step 23 (ST23). Advances to step 17 (ST17), and if not input, repeats step 23 (ST23). Although not shown, when an input operation for returning to the previous screen is performed on the search condition input screen displayed in step 23 (ST23), the search condition input screen drawing unit 17 causes the condition item screen 18 to be displayed. Is displayed again.

  Next, in step 17 (ST17), the facility search unit 27 searches for facilities according to the input search conditions.

  Next, in step 18 (ST18), the search result drawing unit 28 displays the facility list display screen 29 shown in step 3 (ST3) of FIG. 3 as the search result of the facility search unit 27.

  Next, in step 19 (ST19), the facility search unit 27 determines whether or not a refinement search is instructed by operating the refinement search instruction button 33 on the facility list display screen 29. The process proceeds to (ST25), and if not instructed, the process proceeds to step 20 (ST20). Although not shown, when an input operation for returning to the previous screen is performed on the facility list display screen 29, the search condition input screen drawing unit 17 goes to step 15 (ST15) or step 23 (ST23). The search condition input screen shown is displayed again.

  Here, the process after step 20 (ST20) will be described first. In step 20 (ST20), whether or not a specific display item 30 has been selected on the facility list display screen 29 by the destination setting unit 34 is determined. If it is determined and selected, the process proceeds to step 21 (ST21), and if not selected, step 20 (ST20) is repeated.

  Next, in step 21 (ST21), the destination setting unit 34 determines whether or not the destination setting button 32 has been operated, and if it has been operated, the process proceeds to step 22 (ST22) and is not operated. If so, repeat step 21 (ST21).

  Next, in step 22 (ST22), the destination setting unit 34 sets the facility corresponding to the display item 30 selected in step 20 (ST20) as the destination, and the process is terminated.

  On the other hand, in step 25 (ST25), the search condition input screen drawing unit 17 displays the refined item screen 36 shown in FIG. 5, and the process proceeds to step 26 (ST26).

  Next, in step 26 (ST26), the facility search unit 27 determines whether or not a narrowing item (item button 37) has been selected on the narrowing item screen 36 displayed in step 25 (ST25). If so, the process proceeds to step 27 (ST27). If not selected, step 26 (ST26) is repeated.

  Next, in step 27 (ST27), the search condition input screen drawing unit 17 displays a search condition input screen for refinement search corresponding to the refinement item selected in step 26 (ST26), and step 28 (ST28). Proceed to

  Next, in step 28 (ST28), the facility search unit 27 determines whether or not a search condition for narrowing search is input to the search condition input screen for narrowing search displayed in step 27 (ST27). If it is input, the process proceeds to step 17 (ST17). If not input, step 28 (ST28) is repeated.

  As described above, according to the present embodiment, the establishment year information stored in the hard disk drive 15 and the facility that satisfies the establishment year specific condition input on the establishment year condition input screen 21 by the facility search unit 27 are stored. Since it is possible to search using facility information, it is possible to increase the degree of freedom in searching for a facility in consideration of the year of establishment of the facility, and thus it is possible to easily and reliably set a desired destination.

  In addition, this invention is not limited to embodiment mentioned above, A various change is possible as needed.

  For example, the flowchart shown in FIG. 7 can also be applied when setting a waypoint. In such a case, a desired waypoint can be set easily and reliably.

  The present invention can also be applied to a navigation device for a mobile body (for example, a mobile phone) other than the in-vehicle navigation device.

DESCRIPTION OF SYMBOLS 1 Car navigation system 15 Hard disk drive 17 Search condition input screen drawing part 27 Facility search part

Claims (3)

Map data storage means in which map data including facility information which is information indicating an attribute of the facility is stored;
Creation time information storage means in which the creation time information, which is information indicating the establishment time of the facility, is stored in a state associated with the facility information about the facility;
As the search condition input screen that allows you to enter the facility search conditions, the operation buttons with the characters “Before Year”, “After Year” and “Specify Year Range” respectively, and the oldest facility to be searched In order to specify one of the founding date , the latest founding date, and the founding date range, a specific year and a year range field capable of inputting a year range are provided, and the search is performed by the operation button and the year entry field. A search condition input screen display means for displaying on the display section a search condition input screen capable of inputting a creation time specifying condition that is a search condition for specifying the establishment time of the facility
The establishment time information stored in the creation time information storage means and the map data storage are stored in the establishment time information storage means for a facility that satisfies the creation time specification condition input on the search condition input screen displayed by the search condition input screen display means. And a facility searching means for searching using the facility information stored in the means. Map data update means for updating the map data stored in the map data storage means;
When updating the map data by the map data updating means, by comparing the map data before the update with the update data used for updating the map data, a new data not existing in the map data before the update is obtained. A facility is extracted from the update data, and for the extracted new facility, the creation time determination means for determining the update time of the map data as the creation time of the new facility;
Information indicating the founding time determined by the founding time determining means is recorded in the founding time information storage means in a state associated with the facility information of the new facility as the founding time information of the new facility. The navigation device according to claim 1, further comprising: creation time information recording means. The search condition input screen display means, as the search condition input screen, specifies an attribute specifying condition which is a condition for specifying an attribute of a facility to be searched and indicated in the facility information. It is possible to display a search condition input screen that can be input as a search condition for facilities other than the conditions,
The facility search means searches for a facility that satisfies the attribute specifying condition input on the search condition input screen, using the facility information stored in the map data storage means. Or the navigation apparatus of Claim 2.

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