JP2018040593A - Information processing apparatus, information processing system and information processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce communication traffic volume in route guidance.SOLUTION: There is provided an information processing apparatus connected to a server device that searches for a route, which comprises: storage means for storing guidance information used in route guidance about the route in association with guidance information ID for identifying the guidance information; condition setting means for setting a search condition that indicates a condition for searching for the route; search request means for transmitting the search condition set by the condition setting means to the server device; specification means for specifying a second guidance information ID that indicates a guidance information ID not associated with the guidance information stored in the storage means when route information that indicates a route searched by the server device on the basis of the search condition transmitted by the search request means and a first guidance information ID that indicates the guidance information ID of the guidance information used in route guidance about the route are received; and acquisition means for acquiring guidance information identified by the specified second guidance information ID.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an information processing apparatus, an information processing system, and an information processing method.

  Conventionally, for example, a navigation device mounted on a vehicle or the like is known. In the navigation device, by searching for a route based on a destination or the like input by the user, route guidance to the destination can be performed using the searched route.

  Further, in the navigation device, by transmitting information such as the destination input by the user to the server device, route guidance to the destination can be performed using the route searched in the server device.

  Further, after determining whether or not the route searched by the navigation device matches the route searched by the server device, the information on the route searched by the server device is used for the mismatched portion. A technique for performing route guidance is known (see, for example, Patent Document 1).

Japanese Patent No. 4036012

  Here, the navigation apparatus performs route guidance to the destination using, for example, guidance information (for example, an image of a road sign or a voice for guiding the destination).

  However, in the above-described conventional technology, for example, when image data and audio data of all guidance information used for route guidance are acquired from the server device, the communication amount between the navigation device and the server device may increase. .

  One embodiment of the present invention has been made in view of the above points, and aims to reduce the amount of communication in route guidance.

  In order to achieve the above object, an embodiment of the present invention is an information processing apparatus connected via a network to a server device that searches for a route to a destination, and includes guide information used for route guidance of the route. Is set by the guide information ID for identifying the guide information in association with the guide information storage means, the condition setting means for setting search conditions indicating the conditions for searching for the route, and the condition setting means. Search request means for transmitting the search condition to the server device, route information indicating a route searched by the server device based on the search condition transmitted by the search request device, and route guidance for the route. When the first guide information ID indicating the guide information ID of the guide information to be used is received, the guide information stored in the guide information storage means among the first guide information ID. A specifying unit that specifies a second guide information ID that indicates a guide information ID that is not associated with the ID, and guide information that is identified by the second guide information ID specified by the specifying unit is acquired from the server device. Acquisition means.

  An object of the present invention is to reduce the amount of communication in route guidance.

1 is a diagram illustrating a system configuration of an example of a route guidance system according to a first embodiment. It is a figure explaining the outline | summary of a process of the route guidance system which concerns on 1st embodiment. It is a figure which shows the hardware constitutions of an example of the electronic device and server apparatus which concern on 1st embodiment. It is a figure which shows the function structure of an example of the route guidance system which concerns on 1st embodiment. It is a figure which shows an example of the guidance information matched with permanent ID. It is a sequence diagram of an example of a route guidance start process according to the first embodiment. It is a figure explaining an example of route guidance. It is a figure which shows the function structure of an example of the route guidance system which concerns on 2nd embodiment. It is a figure which shows an example of the node information and link information matched with permanent ID. It is a sequence diagram of an example of a route guidance start process according to the second embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[First embodiment]
First, the system configuration of the route guidance system 1 according to the present embodiment will be described with reference to FIG. FIG. 1 is a diagram illustrating a system configuration of an example of a route guidance system 1 according to the present embodiment.

  As shown in FIG. 1, the route guidance system 1 according to the present embodiment includes an electronic device 10 and a server device 20, and is communicably connected via a wide area network N such as the Internet.

  The electronic device 10 is, for example, a navigation device (so-called car navigation) mounted on a vehicle or the like. The route guidance system 1 may include a plurality of electronic devices 10.

  A client program 100 is installed in the electronic device 10. The electronic device 10 includes a map data storage unit 110, a network data storage unit 120, and a guidance information storage unit 130.

  The electronic device 10 requests the server device 20 to search for a route from the current location to the destination by using the client program 100 based on, for example, the destination or waypoint input by the user. In addition, the electronic device 10 searches for a route from the current location to the destination based on, for example, a destination or waypoint input by the user and network data stored in the network data storage unit 120.

  Then, the electronic device 10 displays the route searched by the server device 20 or the route searched by the electronic device 10 on the map indicated by the map data stored in the map data storage unit 110 by the client program 100. Then, route guidance is performed. At this time, the electronic apparatus 10 performs route guidance using at least one of the guidance information stored in the guidance information storage unit 130 and the guidance information acquired from the server device 20. Thereby, the electronic apparatus 10 can perform route guidance with respect to the user.

  As described above, the electronic device 10 can request the server device 20 to search for a route, and the electronic device 10 can also perform a route search.

  The map data is data for displaying a map on the electronic device 10, and is classified for each type of display target such as green space, rivers, roads, railways, prefectures, and the like. It is managed by dividing it into a known mesh. The map data classified for each type of display target is displayed by being drawn for each mesh on a layer predetermined for each type according to the scale. Therefore, for example, the client program 100 displays a map on the electronic device 10 by combining and superimposing one or more mesh-like layers each drawn with map data classified for each type of display target. To do.

  The network data is data used for route search and the like. For example, node information indicating various points such as intersections, branch points, places where road attributes change, places where road width changes, and the like. Link information to be connected is included. The node information includes, for example, node number, latitude / longitude, intersection name (kanji and reading), presence / absence of traffic signal, and the like. Further, the link information includes, for example, information such as link length, coordinate point sequence, link cost, node numbers at both ends of the link, road attributes, traveling direction, altitude (altitude), and the like. Therefore, the client program 100 performs a route search using a known algorithm such as the Dijkstra method so that the cost of the link from the current location to the destination is minimized.

  The guidance information is data such as images and voices used for route guidance, for example, image data such as road signs, voice data for voice guidance, and the like. The guide information is associated with a permanent ID, which is identification information for identifying the guide information.

  The server device 20 is a computer that performs a route search in response to a request from the electronic device 10. The server device 20 may be realized by one or more computers.

  A server program 200 is installed in the server device 20. Further, the server device 20 includes a map data storage unit 210, a network data storage unit 220, and a guidance information storage unit 230.

  In response to a request from the electronic device 10, the server device 20 uses the current location or destination included in the request and the network data stored in the network data storage unit 220 according to the request from the electronic device 10. The route search from to the destination is performed. As with the client program 100, the server program 200 performs a route search using a known algorithm such as the Dijkstra method so that the cost of the link from the current location to the destination is minimized.

  Then, the server device 20 returns the route information indicating the searched route and the permanent ID of the guidance information used for route guidance of the route to the electronic device 10 by the server program 200. Thereby, the electronic device 10 acquires, from the server device 20, guidance information that is not stored in the guidance information storage unit 230 of the electronic device 10 among the guidance information identified by the permanent ID returned from the server device 20. be able to.

  In addition to the route information and the permanent ID, the server device 20 may return map data corresponding to the searched route among the map data stored in the map data storage unit 210 to the electronic device 10.

  Thus, the server device 20 can perform a route search in response to a request from the electronic device 10. In addition, the server device 20 can return a permanent ID of guidance information used for route guidance of the searched route to the electronic device 10.

  Here, the map data, the network data, and the guidance information, for example, when there is a new road laying or an intersection laying, the latest map data, Network data and guidance information are distributed.

  In the present embodiment, it is assumed that the latest guide information is stored in the guide information storage unit 230 of the server device 20. On the other hand, the latest guide information is not necessarily stored in the guide information storage unit 130 of the electronic device 10.

  Similarly, in the present embodiment, it is assumed that the latest network data is stored in the network data storage unit 220 of the server device 20. On the other hand, the latest network data is not necessarily stored in the network data storage unit 120 included in the electronic device 10.

  The user of the electronic device 10 can update the network data, map data, and guide information to the latest state using a recording medium such as a CD, DVD, or USB memory distributed from a vendor or the like.

<Outline of processing>
Next, an outline of processing of the route guidance system 1 according to the present embodiment will be described with reference to FIG. FIG. 2 is a diagram for explaining an overview of processing of the route guidance system 1 according to the first embodiment.

  S1) First, the electronic device 10 transmits to the server device 20 a route search request including, for example, a destination or waypoint input by the user.

  S2) Next, when receiving a route search request from the electronic device 10, the server device 20 searches for a route to the destination based on the destination, waypoint, and the like included in the route search request. Moreover, the server apparatus 20 acquires the permanent ID of the guidance information corresponding to the searched route. The guidance information corresponding to the route is guidance information used for route guidance of the route (that is, for example, image data of a road sign on the route, voice data of voice guidance to the destination, etc.). is there.

  S3) Next, the server device 20 transmits route information indicating the searched route and a permanent ID to the electronic device 10.

  S4) Subsequently, the electronic device 10 specifies a permanent ID that is not associated with the guide information stored in the guide information storage unit 130 among the permanent IDs received from the server device 20. That is, the electronic device 10 specifies a permanent ID of guidance information that is not stored in the guidance information storage unit 130 among the guidance information identified by the permanent ID received from the server device 20. Hereinafter, the permanent ID specified in this way is referred to as “differential permanent ID”.

  S5) Subsequently, the electronic device 10 transmits the differential permanent ID specified in S4 to the server device 20.

  S6) When the server device 20 receives the differential permanent ID, the server device 20 acquires guide information (hereinafter, referred to as “differential guide information”) associated with the differential permanent ID from the guide information storage unit 230.

  S7) Next, the server device 20 transmits the guidance information acquired in S6 to the electronic device 10.

  S8) Then, the electronic device 10 uses the difference guidance information received from the server device 20 in S7 and the guidance information stored in the guidance information storage unit 130 in association with the permanent ID received in S4. Based on this, route guidance of the route indicated by the route information is performed.

  That is, for example, the electronic device 10 performs route guidance of the route 1000 based on the difference guidance information 2100 received from the server device 20 and the guidance information 2200 and guidance information 2300 stored in the guidance information storage unit 130. .

  Thus, in the route guidance system 1 according to the present embodiment, the guidance information (difference guidance information) that is not stored in the guidance information storage unit 130 of the electronic device 10 among the guidance information used for the route guidance is used as the server device 20. Get from. On the other hand, in the route guidance system 1 according to the present embodiment, among the guidance information used for route guidance, the guidance information stored in the guidance information storage unit 130 of the electronic device 10 is acquired from the guidance information storage unit 130. To do.

  Thereby, in the route guidance system 1 which concerns on this embodiment, the amount of data communications in route guidance can be reduced between the electronic device 10 and the server device 20.

<Hardware configuration>
Next, the hardware configuration of the electronic device 10 and the server device 20 included in the route guidance system 1 according to the present embodiment will be described with reference to FIG. FIG. 3 is a diagram illustrating a hardware configuration of an example of the electronic device 10 and the server device 20 according to the first embodiment.

<< Electronic device 10 >>
As illustrated in FIG. 3A, the electronic device 10 according to the present embodiment includes an input device 11, a display device 12, an external I / F 13, and a communication I / F 14. The electronic device 10 according to the present embodiment includes a ROM (Read Only Memory) 15, a RAM (Random Access Memory) 16, a CPU (Central Processing Unit) 17, a storage device 18, and a GPS (Global Positioning System). And a receiver 19. Furthermore, these hardwares are connected to each other via a bus B1.

  The input device 11 is, for example, a touch panel, various buttons, and the like, and is used by the user to make various inputs to the electronic device 10. The display device 12 is, for example, an LCD (Liquid Crystal Display) or the like, and displays a processing result by the electronic device 10.

  The external I / F 13 is an interface with an external device. The external device includes a recording medium 13a. The electronic apparatus 10 can read and write the recording medium 13a via the external I / F 13.

  Examples of the recording medium 13a include a CD, a DVD, an SD memory card, and a USB memory. Note that the client program 100 may be stored in the recording medium 13a.

  The communication I / F 14 is an interface for connecting the electronic device 10 to the network N. The electronic device 10 can perform data communication with the server device 20 via the communication I / F 14.

  The storage device 18 is a nonvolatile memory that stores programs and data, and is, for example, an HDD (Hard Disk Drive), an SSD (Solid State Drive), or the like. The programs and data stored in the storage device 18 include a client program 100, an OS (Operating System) that is basic software for controlling the entire electronic device 10, and the like.

  The RAM 16 is a volatile semiconductor memory that temporarily stores programs and data. The ROM 15 is a non-volatile semiconductor memory that can retain programs and data even when the power is turned off. The ROM 15 stores data such as OS settings and network settings, for example.

  The CPU 17 is an arithmetic unit that implements control of the entire electronic device 10 and various functions by reading programs and data from the ROM 15 and the storage device 18 onto the RAM 16 and executing processes based on the programs and data.

  The GPS receiver 19 receives a predetermined radio wave from the GPS and measures latitude and longitude indicating the current position of the electronic device 10. The GPS receiver 19 may be able to measure the altitude of the electronic device 10.

  The electronic apparatus 10 according to the present embodiment can implement various processes as described later by having the hardware configuration illustrated in FIG.

<< Server device 20 >>
As illustrated in FIG. 3B, the server device 20 according to the present embodiment includes an input device 21, a display device 22, an external I / F 23, and a communication I / F 24. The server device 20 according to the present embodiment includes a ROM 25, a RAM 26, a CPU 27, and a storage device 28. Furthermore, these hardwares are connected to each other via a bus B2.

  The input device 21 is, for example, a keyboard, a mouse, a touch panel, various buttons, and the like, and is used by the user to make various inputs to the server device 20. The display device 22 is, for example, an LCD or a CRT (Cathode Ray Tube), and displays the processing result by the server device 20. Note that at least one of the input device 21 and the display device 22 may be connected to the bus B2 when necessary.

  The external I / F 23 is an interface with an external device. The external device includes a recording medium 23a. The server device 20 can read and write the recording medium 23 a via the external I / F 23.

  Examples of the recording medium 23a include a CD, a DVD, an SD memory card, and a USB memory. Note that the server program 200 may be stored in the recording medium 23a.

  The communication I / F 24 is an interface for connecting the server device 20 to the network N. The server device 20 can perform data communication with the electronic device 10 via the communication I / F 24.

  The storage device 28 is a non-volatile memory that stores programs and data, and is, for example, an HDD or an SSD. The programs and data stored in the storage device 28 include a server program 200 and an OS that is basic software for controlling the entire server device 20.

  The RAM 26 is a volatile semiconductor memory that temporarily stores programs and data. The ROM 25 is a non-volatile semiconductor memory that can retain programs and data even when the power is turned off. The ROM 25 stores data such as OS settings and network settings, for example.

  The CPU 27 is an arithmetic device that implements control of the entire server device 20 and various functions by reading programs and data from the ROM 25, the storage device 28, and the like onto the RAM 26 and executing processes based on the programs and data.

  The server device 20 according to the present embodiment can implement various processes as described later by having the hardware configuration shown in FIG.

<Functional configuration>
Next, the functional configuration of the route guidance system 1 according to the present embodiment will be described with reference to FIG. FIG. 4 is a diagram illustrating a functional configuration of an example of the route guidance system 1 according to the first embodiment.

  As shown in FIG. 4, the electronic device 10 according to the present embodiment includes a communication unit 101, an input reception unit 102, a display control unit 103, a condition setting unit 104, and a route search unit 105 as main functional units. And a difference specifying unit 106 and a route guide unit 107. Each of these functional units is realized by processing that the client program 100 causes the CPU 17 to execute.

  The communication unit 101 transmits / receives various data to / from the server device 20. For example, the communication unit 101 transmits a route search request including a search condition set by the condition setting unit 104 described later to the server device 20. For example, the communication unit 101 receives path information and a permanent ID from the server device 20. Further, for example, the communication unit 101 transmits a difference permanent ID specified by a difference specifying unit 106 described later to the server device 20.

  The input receiving unit 102 receives various inputs from the user. For example, the input receiving unit 102 receives an input of a destination, a waypoint, and the like by the user.

  The display control unit 103 displays various screens. For example, the display control unit 103 displays a map based on the map data stored in the map data storage unit 110 on the display device 12. For example, the display control unit 103 displays the route indicated by the route information received from the server device 20 on a map. Further, the display control unit 103 displays guidance information on the display device 12. In addition to these, the display control unit 103 displays, for example, various types of information (for example, facility information and notes) on a map, and various screens (for example, destination and waypoint setting screens and various settings). Screen).

  The condition setting unit 104 sets search conditions including various conditions for performing a route search. That is, the condition setting unit 104 includes, for example, the destination received by the input receiving unit 102, the current location measured by the GPS receiver 19 (that is, the latitude and longitude information indicating the current position of the electronic device 10), and the like. Set search conditions. Then, the condition setting unit 104 transmits a route search request including the search condition to the server device 20 by the communication unit 101.

  Note that the search condition may include, for example, the waypoint received by the input receiving unit 102. Further, the search condition may include, for example, whether or not a toll road is passing. Thus, the search conditions include various conditions used for route search from the current location to the destination.

  The route search unit 105 performs a route search based on the search conditions set by the condition setting unit 104 and the network data stored in the network data storage unit 120.

  In the route guidance system 1 according to the present embodiment, as described above, the electronic device 10 transmits a route search request including a search condition to the server device 20. For this reason, the electronic device 10 does not necessarily need to perform a route search by the route search unit 105. However, for example, when the communication state between the electronic device 10 and the server device 20 is poor or when it is desired to immediately perform a route search, the electronic device 10 transmits a route search request to the server device 20, and A route search may be performed by the route search unit 105.

  The difference specifying unit 106 determines a difference between the permanent ID transmitted from the server device 20 in response to the route search request and the permanent ID associated with the guidance information stored in the guidance information storage unit 130 (difference permanent ID). ). That is, the difference specifying unit 106 specifies a permanent ID other than the permanent ID associated with the guide information stored in the guide information storage unit 130 among the permanent IDs received from the server device 20 as the difference permanent ID. To do.

  Then, the difference identifying unit 106 transmits the difference permanent ID to the server device 20 through the communication unit 101.

  The route guidance unit 107 performs route guidance for the route indicated by the route information received from the server device 20. At this time, the route guidance unit 107 performs route guidance for the route using the difference guidance information received from the server device 20 and / or the guidance information acquired from the guidance information storage unit 130.

  The route guidance is to guide the user of the electronic apparatus 10 until the destination is reached according to the route. In addition, the route guidance includes, for example, guidance when the current location of the electronic device 10 deviates from the route (guidance for returning to the original route, route re-search, etc.)

  As illustrated in FIG. 4, the server device 20 according to the present embodiment includes a communication unit 201, a route search unit 202, and an acquisition unit 203 as main functional units. Each of these functional units is realized by processing that the server program 200 causes the CPU 27 to execute.

  The communication unit 201 transmits / receives various data to / from the electronic device 10. For example, the communication unit 201 receives a route search request from the electronic device 10. For example, the communication unit 201 transmits to the electronic device 10 route information indicating a route searched by the route search unit 202 described later and a permanent ID acquired by the acquisition unit 203 described later. Furthermore, the communication unit 201 transmits guidance information acquired by the acquisition unit 203 described later to the electronic device 10.

  The route search unit 202 performs a route search based on the search conditions included in the route search request received from the electronic device 10 and the network data stored in the network data storage unit 220. Then, the route search unit 202 transmits the route information indicating the searched route by the communication unit 201 and the permanent ID acquired by the acquisition unit 203 described later to the electronic apparatus 10.

  The acquisition unit 203 acquires the permanent ID associated with the guidance information corresponding to the route searched by the route search unit 202 from the guidance information storage unit 230. In addition, the acquisition unit 203 acquires the guide information (difference guide information) associated with the differential permanent ID received from the electronic device 10 from the guide information storage unit 230.

  Here, guidance information is stored in the guidance information storage unit 130 included in the electronic device 10 and the guidance information storage unit 230 included in the server device 20 in association with the permanent ID. FIG. 5 is a diagram illustrating an example of guidance information associated with a permanent ID.

  FIG. 5A shows an example of guidance information stored in the guidance information storage unit 130. As shown in FIG. 5A, the guidance information storage unit 130 stores guidance information in association with the permanent ID. Here, the guidance information includes content and coordinates as data items.

  The content is data indicating an image displayed as guidance information, a sound reproduced as guidance information, or the like. That is, for example, image data, audio data, or a file path indicating the storage destination of these data is set in the content.

  The coordinates are information indicating the latitude and longitude at which the guide information is used. That is, as the guidance information, for example, when the current location of the electronic device 10 falls within a predetermined range from the latitude and longitude indicated by the coordinates, the image data indicated by the content is displayed (or the audio data is reproduced). .)

  FIG. 5B shows an example of guidance information stored in the guidance information storage unit 230. As shown in FIG. 5B, the guidance information storage unit 230 stores guidance information in association with the permanent ID.

  Here, as described above, the latest guide information is stored in the guide information storage unit 230, while the latest guide information is not necessarily stored in the guide information storage unit 130. Therefore, the guide information storage unit 230 stores guide information such as permanent IDs “P001”, “P002”, “P003”, and “P004”, while the guide information storage unit 130 stores the guide information. The guide information of the permanent ID “P002” is not stored.

<Details of processing>
Next, details of processing of the route guidance system 1 according to the present embodiment will be described. Thereafter, route information indicating the route searched for by the server device 20 is transmitted to the electronic device 10, and then the route information of the route is used using the guidance information stored in the electronic device 10 and / or the server device 20. The process for starting the process will be described with reference to FIG. FIG. 6 is a sequence diagram illustrating an example of a route guidance start process according to the first embodiment.

  In step S601, the condition setting unit 104 of the electronic device 10 sets a search condition. That is, the condition setting unit 104 sets a search condition including, for example, the destination received by the input receiving unit 102, the current location measured by the GPS receiver 19, and the like. Note that the user can input a destination or the like on a screen (search condition setting screen) displayed by the display control unit 103, for example.

  In step S <b> 602, the condition setting unit 104 of the electronic device 10 transmits a route search request including the search condition set in step S <b> 601 to the server device 20 through the communication unit 101.

  In step S <b> 603, when the route search unit 202 of the server device 20 receives the route search request by the communication unit 201, the route search request included in the route search request and the network data stored in the network data storage unit 220. Based on the route search. That is, the route search unit 202 searches for an optimum route from the current location to the destination based on the current location and the destination included in the search conditions, for example.

  In step S604, the acquisition unit 203 of the server device 20 acquires the permanent ID of the guidance information corresponding to the route searched in step S603 from the guidance information storage unit 230. In other words, the acquisition unit 203, for example, the permanent in which the coordinates of the guidance information stored in the guidance information storage unit 230 are associated with the guidance information that is within a predetermined range from the route searched in step S603 above. Get an ID.

  In step S605, the route searching unit 202 of the server device 20 transmits the route information indicating the route searched in step S603 and the permanent ID acquired by the acquiring unit 203 in step S604 to the electronic device 10. To do.

  The route information is information including, for example, node information of a node included in the route and link information of a link included in the route. However, the route information may be, for example, coordinate point sequence information indicating the latitude and longitude for each predetermined interval on the route. The route information is, for example, information for searching for the same route by the route search unit 105 of the electronic device 10 (information indicating the starting point and destination on the route, information indicating each point on the route, etc.) It may be.

  In step S <b> 606, the difference specifying unit 106 of the electronic device 10 determines the difference (difference permanent) between the permanent ID received from the server device 20 and the permanent ID associated with the guidance information stored in the guidance information storage unit 130. ID) is specified. That is, the difference specifying unit 106 specifies a permanent ID other than the permanent ID associated with the guide information stored in the guide information storage unit 130 among the permanent IDs received from the server device 20 as the difference permanent ID. To do.

  Specifically, for example, while the permanent IDs received from the server device 20 are “P001”, “P002”, “P003”, and “P007”, the guidance information of the permanent ID “P002” and the permanent ID “P007”. ”Is not stored in the guide information storage unit 130. In this case, the difference specifying unit 106 specifies the difference permanent IDs as “P002” and “P007”.

  In step S <b> 607, the difference specifying unit 106 of the electronic device 10 transmits the difference permanent ID to the server device 20 through the communication unit 101.

  In step S <b> 608, when the acquisition unit 203 of the server device 20 receives the differential permanent ID by the communication unit 101, the acquisition unit 203 acquires guidance information (differential guidance information) associated with the differential permanent ID from the guidance information storage unit 230. .

  In step S609, the acquisition unit 203 of the server device 20 transmits the difference guide information acquired in step S608 to the electronic device 10 by the communication unit 201.

  In step S610, the route guidance unit 107 of the electronic device 10 has the permanent ID associated with the guidance information stored in the guidance information storage unit 130 among the permanent IDs received from the server device 20 in step S606. Get guide information.

  As described above, the electronic device 10 acquires from the guidance information storage unit 130 guidance information associated with a permanent ID other than the differential permanent ID among the permanent IDs received from the server device 20. At this time, the electronic device 10 may update the guide information storage unit 130 by storing the difference permanent ID and the difference guide information received from the server device 20 in the guide information storage unit 130 in association with each other. good.

  In step S611, the route guidance unit 107 of the electronic device 10 uses the difference guidance information received from the server device 20 and the guidance information acquired in step S610 to indicate the route information received in step S605. The route guidance is performed.

  For example, when the route information is coordinate point sequence information, the route guide unit 107 displays the route on the map by connecting each coordinate point sequence indicated by the coordinate point sequence information with a straight line or a curve. good. In addition, for example, when the route information is information indicating a starting point and a destination on the route searched for by the server device 20, information indicating each point on the route, etc. The search unit 105 may perform a route search from these pieces of information and display the searched route on a map.

  Here, an example of route guidance by the route guidance unit 107 of the electronic device 10 is shown in FIG. FIG. 7 is a diagram illustrating an example of route guidance.

  As shown in FIG. 7, the electronic apparatus 10 causes the display control unit 103 to display a route guidance screen G100 on the display device 12. The route guidance screen G100 displays a route 3000, difference guidance information 4100, guidance information 4200, and guidance information 4300. In this way, the route guidance screen G100 can perform route guidance by the route 3000 by displaying the difference guidance information 4100, the guidance information 4200, the guidance information 4300, and the like indicating road signs and the like.

  Also, as shown in FIG. 7, the electronic apparatus 10 can perform route guidance by the route 3000 by outputting the difference guidance information 4400 that is voice guidance by the route guidance unit 107. Note that the voice guidance based on the difference guidance information 4400 can be performed by, for example, an in-vehicle speaker connected to the electronic device 10.

  As a result, the user of the electronic device 10 refers to the difference guidance information 4100, the guidance information 4200 and the guidance information 4300 displayed on the route guidance screen G100, the difference guidance information 4400 output as voice, and the like according to the route 3000. You will be able to reach the ground.

  As described above, in the route guidance system 1 according to the present embodiment, the guidance information (difference guidance information) that is not stored in the electronic device 10 among the guidance information used for the route guidance of the route searched by the server device 20. Is acquired from the server device 20. On the other hand, in the route guidance system 1 according to the present embodiment, the guidance information stored in the electronic device 10 is not acquired from the server device 20 among the guidance information used for route guidance of the route searched for by the server device 20. .

  Therefore, in the route guidance system 1 according to the present embodiment, it is possible to reduce the amount of communication between the electronic device 10 and the server device 20 when obtaining guidance information used for route guidance.

[Second Embodiment]
Next, a second embodiment will be described. In the first embodiment, the case where the permanent ID is associated with the guidance information has been described. In the second embodiment, the permanent ID is associated with the node information and the link information included in the network data. The case will be described.

  Thereby, in 2nd embodiment, based on the path | route searched by the server apparatus 20, the network data storage part 120 of the electronic device 10 can be updated now. Hereinafter, the permanent ID associated with the node information is represented as “node ID”, and the permanent ID associated with the link information is represented as “link ID”.

  In the second embodiment, portions having the same functions as those in the first embodiment and portions performing the same processing are assigned the same reference numerals as those in the first embodiment, and description thereof is omitted.

<Functional configuration>
Next, the functional configuration of the route guidance system 1 according to the present embodiment will be described with reference to FIG. FIG. 8 is a diagram illustrating a functional configuration of an example of the route guidance system 1 according to the second embodiment.

  As illustrated in FIG. 8, the electronic device 10 according to the present embodiment includes an update unit 108. The functional unit is realized by processing that the client program 100 causes the CPU 17 to execute. Further, the electronic device 10 according to the present embodiment is different from the first embodiment in the function of the difference specifying unit 106A.

  The difference specifying unit 106A includes a permanent ID (node ID and link ID) transmitted from the server device 20 in response to the route search request, and node information and link information included in the network data stored in the network data storage unit 120. The difference (difference permanent ID) with the permanent ID (node ID and link ID) associated with is identified.

  That is, the difference specifying unit 106A determines the difference (difference node ID) between the node ID received from the server device 20 and the node ID associated with the node information included in the network data stored in the network data storage unit 120. ). Further, the difference specifying unit 106A determines the difference between the link ID received from the server device 20 and the link ID associated with the link information included in the network data stored in the network data storage unit 120 (difference link ID). ).

  Then, the difference identification unit 106A transmits the difference permanent ID (difference node ID and difference link ID) to the server device 20 by the communication unit 101.

  The update unit 108 updates the network data storage unit 120 using node information and link information acquired by the acquisition unit 203A described later.

  As shown in FIG. 8, the server device 20 according to the present embodiment is different from the first embodiment in the function of the acquisition unit 203A.

  The acquisition unit 203A acquires the node information corresponding to the route searched by the route search unit 202 and the permanent ID of the link information (node ID and link ID) from the network data storage unit 220. That is, the acquisition unit 203A obtains, from the network data storage unit 220, the node ID of the node information indicating the node included in the route searched by the route search unit 202 and the link ID of the link information indicating the link included in the route. get.

  In addition, the acquisition unit 203A acquires node information (difference node information) associated with the difference node ID received from the electronic device 10 from the network data storage unit 220. Furthermore, the acquisition unit 203A acquires link information (differential link information) associated with the differential link ID received from the electronic device 10 from the network data storage unit 220.

  Here, as described above, node information and link information are stored in the network data storage unit 120 included in the electronic device 10 and the network data storage unit 220 included in the server device 20 in association with the permanent ID. FIG. 9 is a diagram illustrating an example of node information and link information associated with a permanent ID.

  FIG. 9A shows an example of node information included in network data stored in the network data storage unit 120. As shown in FIG. 9A, the network data storage unit 120 stores node information in association with the node ID. Here, the node information includes a node number, latitude / longitude, and the like as data items as described above.

  FIG. 9B shows an example of link information included in network data stored in the network data storage unit 120. As shown in FIG. 9B, the network data storage unit 120 stores link information in association with the link ID. Here, as described above, the link information includes a link length, a coordinate point sequence, a node number (start point, end point), a road attribute, a traveling direction, and the like as data items.

  FIG. 9C shows an example of node information included in network data stored in the network data storage unit 220. As shown in FIG. 9C, the network data storage unit 220 stores node information in association with the node ID.

  FIG. 9D shows an example of link information included in network data stored in the network data storage unit 220. As shown in FIG. 9C, the network data storage unit 220 stores link information in association with the link ID.

  Here, as described above, while the latest network data is stored in the network data storage unit 220, the latest network data is not necessarily stored in the network data storage unit 120. Therefore, for example, link information with the link ID “P002” is stored in the network data storage unit 220, while link information with the link ID “P002” is not stored in the network data storage unit 120.

<Details of processing>
Next, details of processing of the route guidance system 1 according to the present embodiment will be described. Hereinafter, FIG. 10 will be described with respect to the process of updating the network data stored in the electronic device 10 when route information indicating the route searched by the server device 20 is transmitted to the electronic device 10 to start route guidance. The description will be given with reference. FIG. 10 is a sequence diagram of an example of route guidance start processing according to the second embodiment.

  In step S <b> 1001, the acquisition unit 203 </ b> A of the server device 20 acquires from the network data storage unit 220 the node information corresponding to the route searched in step S <b> 603 and the permanent ID of the link information (node ID and link ID).

  In step S1002, the route search unit 202 of the server device 20 obtains the route information indicating the route searched in step S603 and the permanent ID (node ID and link ID) acquired by the acquisition unit 203A in step S1001. Transmit to the electronic device 10.

  In step S1003, the difference specifying unit 106A of the electronic device 10 receives the permanent ID (node ID and link ID) received from the server device 20 and the permanent associated with the network data stored in the network data storage unit 120. A difference from the ID (difference permanent ID) is specified.

  That is, the difference specifying unit 106A specifies a node ID other than the node ID associated with the node information stored in the network data storage unit 120 among the node IDs received from the server device 20 as the difference node ID. To do. Similarly, the difference specifying unit 106A uses a link ID other than the link ID associated with the link information stored in the network data storage unit 120 among the link IDs received from the server device 20 as the difference link ID. Identify.

  Then, the difference specifying unit 106A sets the difference node ID and the difference link ID as the difference permanent ID.

  In step S <b> 1004, the difference specifying unit 106 </ b> A of the electronic device 10 transmits the difference permanent ID to the server device 20 through the communication unit 101.

  In step S1005, when the acquisition unit 203A of the server device 20 receives the differential permanent ID through the communication unit 201, the acquisition unit 203A acquires network data associated with the differential permanent ID from the network data storage unit 220.

  That is, the acquisition unit 203A acquires node information (difference node information) associated with the difference node ID from the network data storage unit 220. Similarly, the acquisition unit 203 </ b> A acquires link information (difference link information) associated with the difference link ID from the network data storage unit 220.

  In step S1006, the acquisition unit 203A of the server device 20 transmits the difference node information and the difference link information acquired in step S1005 to the electronic device 10 by the communication unit 201.

  In step S <b> 1007, the update unit 108 of the electronic device 10 updates the network data storage unit 120 using the difference node information and the difference link information received by the communication unit 101. That is, the update unit 108 stores the difference node information in the network data storage unit 120 in association with the difference node ID. Similarly, the update unit 108 stores the difference link information in the network data storage unit 120 in association with the difference link ID. Thereby, the network data storage unit 120 is updated.

  In step S <b> 1008, the route guidance unit 107 of the electronic device 10 performs route guidance for the route indicated by the route information received from the server device 20. At this time, the route guidance unit 107 performs route guidance using the guidance information and / or the difference guidance information as described in the first embodiment.

  For example, when the route information is coordinate point sequence information, the route guidance unit 107 may perform the process of step S1008 before the process of step S1003. In other words, in this case, the processing of steps S1003 to S1007 may be performed in the background of route guidance by the route guidance unit 107.

  As described above, in the route guidance system 1 according to the present embodiment, among the node information and link information corresponding to the route searched for by the server device 20, the node information and link information that are not stored in the electronic device 10 are Updates added to the electronic device 10 can be performed. Thereby, in the route guidance system 1 according to the present embodiment, the user does not need to manually update the network data storage unit 120 of the electronic device 10 using a recording medium such as a CD, a DVD, or a USB memory. .

  Note that the present invention is not limited to the specifically disclosed embodiments, and various modifications and changes can be made without departing from the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Route guidance system 10 Electronic device 20 Server apparatus 100 Client program 101 Communication part 102 Input reception part 103 Display control part 104 Condition setting part 105 Route search part 106 Difference specification part 107 Route guidance part 110 Map data storage part 120 Network data storage part DESCRIPTION OF SYMBOLS 130 Guide information storage part 200 Server program 201 Communication part 202 Route search part 203 Acquisition part 210 Map data storage part 220 Network data storage part 230 Guide information storage part

Claims (8)

An information processing device connected via a network to a server device that searches for a route to a destination,
Guidance information storage means for storing guidance information used for route guidance of the route in association with a guidance information ID for identifying the guidance information;
Condition setting means for setting a search condition indicating a condition for searching for the route;
Search request means for transmitting the search condition set by the condition setting means to the server device;
Route information indicating a route searched by the server device based on the search condition transmitted by the search request means, and a first guide information ID indicating a guide information ID of guide information used for route guidance of the route And a specifying means for specifying a second guide information ID indicating a guide information ID that is not associated with the guide information stored in the guide information storage means among the first guide information ID. ,
Obtaining means for obtaining from the server device guidance information identified by the second guidance information ID identified by the identifying means;
An information processing apparatus.   The information processing apparatus according to claim 1, wherein the guidance information includes image data or audio data used for route guidance of the route.   The information processing according to claim 1, further comprising guide means for performing route guidance to a destination according to a route indicated by route information received from the server device, using the guidance information acquired by the acquisition unit. apparatus. The acquisition means includes
The second guide information ID specified by the specifying means is transmitted to the server device, and the guide information identified by the second guide information ID returned from the server device is acquired. The information processing apparatus according to any one of 1 to 3. Network information storage means for storing node information and link information used for route search of the route in association with node IDs and link IDs for identifying the node information and the link information, respectively;
The specifying means is:
Route information indicating a route searched by the server device based on the search condition transmitted by the search request means, and first and second node IDs and link IDs of node information and link information corresponding to the route, respectively. 2nd node ID which shows node ID which is not matched with the node information memorize | stored in the said network information storage means among said 1st node ID, if node ID of 1st and 1st link ID are received And specifying a second link ID indicating a link ID that is not associated with the link information stored in the network information storage unit among the first link IDs,
The acquisition means includes
The node information identified by the second node ID identified by the identifying means and the link information identified by the second link ID identified by the identifying means are acquired from the server device. Item 5. The information processing apparatus according to any one of Items 1 to 4.   The node information acquired by the acquisition unit is associated with the second node ID and stored in the network information storage unit, and the link information acquired by the acquisition unit is associated with the second link ID. The information processing apparatus according to claim 5, further comprising an updating unit that is additionally stored in the network information storage unit. An information processing system having a server device for searching for a route to a destination, and an electronic device connected to the server device via a network,
The electronic device is
First guide information storage means for storing guide information used for route guidance of the route in association with a guide information ID for identifying the guide information;
When the first guidance information for identifying the guidance information used for route guidance of the route searched for by the server device is received, the first guidance information is stored in the first guidance information storage means. Identifying means for identifying a second guidance information ID indicating guidance information ID not associated with the guidance information;
First transmitting means for transmitting the second guidance information ID specified by the specifying means to the server device;
Have
The server device
Second guidance information storage means for storing guidance information used for route guidance of the route in association with a guidance information ID for identifying the guidance information;
Obtaining means for obtaining guidance information stored in the second guidance information storage means in association with the second guidance information ID received from the electronic device;
Second transmission means for transmitting the guidance information acquired by the acquisition means to the electronic device;
An information processing system having An information processing apparatus connected via a network to a server device that searches for a route to a destination, wherein guidance information used for route guidance of the route is associated with a guidance information ID that identifies the guidance information In an information processing method used for an information processing apparatus having guidance information storage means for storing,
A condition setting procedure for setting a search condition indicating a condition for searching the route;
A search request procedure for transmitting the search condition set by the condition setting procedure to the server device;
Route information indicating a route searched by the server device based on the search condition transmitted by the search request procedure, and a first guide information ID indicating guide information ID of guide information used for route guidance of the route And a specific procedure for identifying a second guide information ID indicating a guide information ID that is not associated with the guide information stored in the guide information storage means among the first guide information IDs. ,
An acquisition procedure for acquiring from the server device guidance information identified by the second guidance information ID identified by the identification procedure;
An information processing method comprising:

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