JP2006330279A - Mobile terminal, broadcasting station, and map update system using these - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile terminal, a broadcasting station and a map update system using these, capable of distributing a map update data at a priority suitable for a user. <P>SOLUTION: In the map update system provided with a broadcasting station having a predetermined broadcasting area and the mobile terminal, the broadcasting station comprises; a broadcasting data storing means 101 for storing update data of a plurality of districts; a priority setting means 102 for setting the priority so that the update data in the broadcasting area can be broadcasted more often than the update data in an area outside the broadcasting area; and a broadcasting means 105 for broadcasting the update data determined according to the set priority from the plurality of stored update data, and the mobile terminal comprises: a receiving means 201 for receiving the update data broadcasted by the broadcasting station; a map data storing means 204 for storing the map data; and a map data update means 205 for updating the map data stored in the map data memory means on the basis of the update data which is received by the receiving means. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mobile terminal, a broadcast station, and a map update system using them, and more particularly to a technique for updating map data stored in a mobile terminal by broadcasting from a broadcast station.

  Conventionally, a map information providing system that can efficiently send a wide range of map information from a base station to a plurality of mobile stations is known (see Patent Document 1). In order to solve the problem that this map information providing system is wasteful because it will send parts that have not changed for a long time every time when trying to send all the maps of the target range, it takes too much time to send the map The configuration is as follows.

  That is, the base station distributes a map of a predetermined target range to a plurality of unspecified mobile stations. At this time, the map information of the target range is divided into a plurality of area maps, and distribution is performed for each area map. The map sending company creates a distribution schedule including the area maps to be distributed and their order. At this time, the distribution schedule is set so that the distribution frequency of the recently rewritten area map is higher than the distribution frequency of the area map that has not been rewritten for a long time. Therefore, a new area map is distributed many times a day, and the mobile station can obtain a new map with a high probability.

Japanese Patent Laid-Open No. 11-15372

  However, in the map information providing system described in Patent Document 1 described above, there is a problem that an area map outside the target range is not distributed in order to distribute an area map within the predetermined target range. For example, when the target range is only Tokyo, there is a problem that area maps other than Tokyo are not delivered permanently.

  In addition, when the target area is the whole country of Japan, the area map of the whole country will be distributed sometime, but since the distribution frequency is distributed based on freshness, the area map of the area where the vehicle is currently located There is a problem that it may not be preferentially delivered.

  The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a mobile terminal, a broadcasting station, and a map update system using them, which can distribute map update data in a priority order suitable for a user. And

  In the mobile terminal according to the first aspect of the invention, update data applied to map data in the broadcast area from a broadcast station having a predetermined broadcast area is higher in frequency than update data applied to map data outside the broadcast area. Receiving means for receiving update data broadcast on the map, map data storage means for storing map data, and a map for updating the map data stored in the map data storage means based on the update data received by the receiving means Data updating means.

  A broadcast station according to a second aspect of the present invention is a broadcast station having a predetermined broadcast area, which stores a plurality of update data for updating map data in a plurality of regions, and stores the update data in the broadcast data storage means. The priority is set so that the update data applied to the map data in the broadcast area is broadcast at a higher frequency than the update data applied to the map data outside the broadcast area. A priority setting means and a broadcasting means for broadcasting update data determined according to the priority set by the priority setting means from among a plurality of update data stored in the broadcast data storage means.

  A map update system according to a third invention is a map update system comprising a broadcast station having a predetermined broadcast area and a mobile terminal, wherein the broadcast station updates a plurality of update data for updating map data in a plurality of regions. Update data applied to map data in the broadcast area is applied to map data outside the broadcast area with respect to a plurality of update data stored in the broadcast data storage means Priority setting means for setting the priority so that it is broadcast at a higher frequency than the data, and a priority set by the priority setting means from among a plurality of update data stored in the broadcast data storage means The mobile terminal is provided with broadcast means for broadcasting the update data, and the mobile terminal receives the update data broadcast from the broadcast station and the map data for storing the map data. Storage means, on the basis of the received update data in the receiving means and a map data updating means for updating the map data stored in the map data storage means.

  According to the mobile terminal according to the first invention, the broadcast station according to the second invention, and the map update system according to the third invention, the broadcast frequency of the update data is highest in the broadcast area and the farther away from the broadcast area. Lower. As a result, the region map data having a higher importance level in the mobile terminal has a higher probability of being updated earlier. Therefore, it is possible to provide a mobile terminal, a broadcasting station, and a map update system using these, which can distribute map update data in a priority order suitable for the user.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1 FIG.
The map update system according to Embodiment 1 of the present invention is composed of a broadcasting station and a mobile terminal. A broadcasting station is comprised from the broadcasting station which can perform the data broadcasting by terrestrial digital broadcasting and FM multiplex broadcasting with respect to a broadcast area, for example. Here, the “broadcast area” refers to an area in units of prefectures, for example. The mobile terminal includes, for example, a car navigation device mounted on a car, a mobile phone carried by a pedestrian, a PDA (Personal Digital Assistance), a personal computer, and the like.

  FIG. 1 is a block diagram showing the configuration of a broadcasting station that constitutes the map update system according to Embodiment 1 of the present invention. This broadcast station is composed of broadcast data storage means 101, priority setting means 102, broadcast area determination means 103, broadcast data determination means 104, and broadcast means 105.

  The broadcast data storage unit 101 stores broadcast data broadcast from the broadcast station. The priority setting unit 102 sets the priority of broadcasting order and frequency for the broadcast data stored in the broadcast data storage unit 101. The broadcast area determination unit 103 determines whether or not the range of the broadcast data stored in the broadcast data storage unit 101 is within the broadcast area (details will be described later). Broadcast data determining means 104 determines broadcast data to be broadcast according to the priority set by priority setting means 102. The broadcast unit 105 broadcasts the broadcast data determined by the broadcast data determination unit 104.

  FIG. 2 is a block diagram showing the configuration of the mobile terminal constituting the map update system according to Embodiment 1 of the present invention. This mobile terminal includes receiving means 201, received data selecting means 202, received data storing means 203, map data storing means 204, map data updating means 205, current position specifying means 206, operating means 207, display means 208, and current date and time acquisition. It comprises means 209 and control means 210.

  The receiving unit 201 receives broadcast data transmitted from a broadcast station. Broadcast data received by the receiving means 201 is sent to the received data storage means 203 in response to an instruction from the received data selecting means 202. The reception data selection unit 202 instructs the reception unit 201 and the reception data storage unit 203 to select broadcast data to be stored in the reception data storage unit 203 from the broadcast data received by the reception unit 201. The reception data storage unit 203 stores the broadcast data instructed from the reception data selection unit 202 among the broadcast data transmitted from the reception unit 201. The broadcast data stored in the received data storage unit 203 is read by the map data update unit 205.

  The map data storage unit 204 stores map data. The map data stored in the map data storage unit 204 is updated by the map data update unit 205 and read from the control unit 210. The map data updating unit 205 updates the map data stored in the map data storage unit 204 according to the update data included in the broadcast data read from the received data storage unit 203. Thereby, the contents of the map data storage means 204 are updated to the latest map data.

  The current position specifying means 206 specifies its current position. Current position data representing the current position specified by the current position specifying means 206 is sent to the control means 210. The operation unit 207 is used by the user to give various instructions to the mobile terminal. The operation data input by the operation of the operation unit 207 is sent to the control unit 210. The display unit 208 displays a map and various messages according to the display data sent from the control unit 210. The current date and time acquisition unit 209 acquires the current date and time. Data representing the current date and time acquired by the current date and time acquisition unit 209 is sent to the control unit 210.

  The control unit 210 controls the entire mobile terminal. The control unit 210 includes a navigation application execution unit 211. The navigation application execution unit 211 executes an application for realizing a navigation function. The navigation function realized by executing the application by the navigation application execution unit 211 includes a “map display function” for displaying a map on the display unit 208 using the map data stored in the map data storage unit 204, a current position “Locator function” for identifying the current position of the user using the current position data sent from the identifying unit 206, and the destination set from the operating unit 207 using the map data stored in the map data storage unit 204 A “route search function” for obtaining a route, a “route guidance function” for performing left / right turn guidance or the like when traveling on a route obtained by the route search function, and the like.

  Next, a map data format used in the map update system according to the first embodiment will be described with reference to FIG. As shown in FIG. 3A, the map data includes header information that defines the configuration of the entire map data and a plurality of area map data # 0 to #n divided for each area. As shown in FIG. 3B, the header information is composed of a data type indicating the type of map data, a data version, a file size, and a data number representing the number of area map data in the file.

  The area map data is, for example, area map data obtained by dividing the entire map as shown in FIG. The area map data is composed of display data and road network data as shown in the area map data format shown in FIG. As shown in FIG. 5A, the display data includes a data ID, a data size, a hierarchy level and a data range, which are unique values for specifying the display data, and a road for designating a display target. It is composed of a coordinate string, a background line coordinate string, a display character string, and a display symbol.

  As shown in FIG. 5B, the road network data includes data ID, data size, hierarchical level, data range, intersection data, etc., which are unique values for specifying the road network data, and between intersections. Link data representing the road and traffic regulation data representing traffic regulation such as one-way traffic. Here, the “data range” included in the display data and the road network data defines a range of each of the divided areas as shown in FIG. 4, for example.

  The “hierarchy level” included in the display data and the road network data is used to define the area range. As shown in FIG. 6, as the level value increases from hierarchy level 0 to hierarchy level 1 and hierarchy level 2, the level value increases. The area range is specified to be large. Further, the map data is configured such that a detailed map can be drawn as the level value of the hierarchical level decreases.

  Next, the format of update data used for updating to the latest map data in the map update system according to Embodiment 1 will be described with reference to FIG. As shown in FIG. 7A, the update data is composed of header information and a plurality of area map update data # 0 to #n. As shown in FIG. 7B, the header information is composed of the data type of the update data, the corresponding data version indicating the version of the map data to be updated, the updated data version, the file size, and the number of update data. Yes. Each of the area map update data # 0 to #n includes a data ID, a data type, a hierarchy level, a corresponding data version, a data version after update, a data size, data, which are unique values for specifying the area map update data. It consists of a range, an updated data size, and an updated data entity.

  Next, the operation of the map updating system according to Embodiment 1 of the present invention configured as described above will be described. First, priority setting processing performed in a broadcasting station will be described with reference to the flowchart shown in FIG. This priority setting process is performed in the priority setting means 102 of the broadcasting station.

  In the priority setting process, update data area determination is first performed (step ST10). That is, the priority setting means 102 extracts the data range from the first area map update data # 0 in the update data included in the broadcast data stored in the broadcast data storage means 101, and the area indicated by this data range Determine. Next, it is checked whether or not the area determined in step ST10 is within the broadcast area (step ST11). In this case, as shown in FIG. 6, if the area indicated by the data range of the regional map data (the portion indicated by diagonal lines) overlaps with the broadcast area 601 even a little, it is regarded as being within the broadcast area.

  If it is determined in step ST11 that it is within the broadcast area, the priority of the area map update data is set to “1” (step ST12). Specifically, the priority “1” is stored in the position of the same data ID as the data ID of the region map update data in the priority table as shown in FIG. Thereafter, the sequence proceeds to step ST14. On the other hand, when it is determined in step ST11 that it is not within the broadcast area, that is, outside the broadcast area, priority setting outside the broadcast area is performed (step ST13). Details of the priority setting processing outside the broadcast area performed in step ST13 will be described later. Thereafter, the sequence proceeds to step ST14.

  In step ST14, it is checked whether it is the last data. That is, it is checked whether or not the processing for the area map update data #n is completed. Here, if it is determined that it is not the last data, the sequence returns to step ST10, and processing for the next area map update data # 1 is performed. Thereafter, the processes in steps ST10 to ST14 are repeatedly executed, and when it is determined in step ST14 that the data is the last data, the priority setting process ends.

  Next, details of the “priority setting process outside the broadcast area” performed in step ST13 will be described with reference to the flowchart shown in FIG. In the priority setting process outside the broadcast area, first, the loop variable i is initialized to zero (step ST20). Next, the loop variable i is incremented (+1) (step ST21). Next, it is checked whether or not the area determined in step ST10 in the flowchart of FIG. 8 is within the range of the area + i outside the broadcast area as shown in FIG. 11 (step ST22). In this case, as shown in FIG. 6, if the area indicated by the data range of the regional map data overlaps area + i even a little, it is regarded as being in area + i. If it is determined in step ST22 that the area is within the range of area + i, priority “i + 1” is set in the priority table (step ST23). Thereafter, the sequence returns to the flowchart of FIG.

  If it is determined in step ST22 that it is not within the range of area + i, it is checked whether or not the loop variable i is “n” (step ST24). If it is determined in step ST24 that the loop variable i is not “n”, the sequence returns to step ST21 and the above-described processing is repeated. On the other hand, when it is determined in step ST24 that the loop variable i is “n”, the priority “n + 1” is set in the priority table (step ST25). Thereafter, the sequence returns to the flowchart of FIG.

  With the above priority setting process, the creation of the priority table as shown in FIG. 9 is completed. It should be noted that the priority value set in the priority table is “1” which is the smallest in the broadcast area and increases as the distance from the broadcast area increases. This priority table indicates that the priority is higher as the set value is smaller.

  Next, update data broadcast processing performed in the broadcast station will be described with reference to the flowchart shown in FIG. This update data broadcast processing is mainly performed by the broadcast data determination means 104 and the broadcast means 105 of the broadcast station.

  In the update data broadcast process, first, the first loop variable i is initialized to zero (step ST30). Next, the first loop variable i is incremented (+1) (step ST31). Next, the second loop variable j is initialized to zero (step ST32). Next, the second loop variable j is incremented (+1) (step ST33). Next, the update data with the priority j is transmitted (broadcast) (step ST34). Next, it is checked whether or not the second loop variable j is “i” (step ST35).

  If it is determined in step ST35 that the second loop variable j is not “i”, the sequence returns to step ST33, and the above-described processing is repeated. On the other hand, if it is determined in step ST35 that the second loop variable j is “i”, it is then checked whether or not the first loop variable i is “n + 1” (step ST36). If it is determined in step ST36 that the first loop variable i is not “n + 1” (i <n + 1), the sequence returns to step ST31 and the above-described processing is repeated. On the other hand, when it is determined in step ST36 that the first loop variable i is “n + 1”, the update data broadcast processing is terminated. Through the above processing, the update data is broadcast in the order and frequency as shown in FIG. That is, update data with high priority is broadcast with high frequency, and the frequency with which update data is broadcast decreases as the priority decreases.

  Next, data reception processing performed in the mobile terminal will be described with reference to the flowchart shown in FIG. This data reception processing is mainly performed in the reception unit 201, the reception data selection unit 202, the reception data storage unit 203, the reception data storage unit 204, and the map data update unit 205.

  In the data reception process, first, the broadcast update data is received (step ST40). Next, it is checked whether or not the update data received in step ST40 has been received (step ST41). If it is determined in step ST41 that the signal has been received, the sequence returns to step ST40, and the processes of steps ST40 and ST41 are repeated thereafter.

  If it is determined in step ST41 that it has not been received during the repeated execution of steps ST40 and ST41, the regional map data corresponding to the update data received in step ST40 is acquired from the map data storage means 204 (step ST42). Next, the acquired area map data is updated to the latest data based on the update data acquired in step ST42 (step ST43). Next, the update data acquired in step ST42 is recorded in the received data storage means 203 (step ST44). Next, the area map data updated to the latest data in step ST43 is recorded in the map data storage means 204 (step ST45). Thereafter, the sequence returns to step ST40, and the above-described processing is repeated.

  Next, map data acquisition processing performed by the navigation application execution unit 211 of the mobile terminal will be described with reference to the flowchart shown in FIG. This map data acquisition process is mainly performed by the navigation application execution unit 211 inside the control unit 210. In the map data acquisition process, first, map data necessary for executing the application is selected (step ST50). Next, the map data selected in step ST50 is acquired from the map data storage means 204 (step ST51).

  As described above, according to the map update system according to the first embodiment of the present invention, the broadcast frequency of update data is highest in the broadcast area and decreases as the distance from the broadcast area increases. As a result, the region map data having a higher importance level in the mobile terminal has a higher probability of being updated earlier.

  In the map update system according to the first embodiment described above, the mobile terminal is configured to receive all the update data that has not been received. However, the user sets whether reception is possible in advance and is set to reception enabled. It can be configured to receive only the updated data. According to this configuration, only the map data desired by the user can be updated, so that the processing load on the mobile terminal can be reduced.

  Moreover, in the map update system which concerns on Embodiment 1 mentioned above, although the mobile terminal was comprised so that all the update data received from the broadcasting station might be preserve | saved, whether it preserve | saves to a user whenever it receives update data Can be configured to store only the update data permitted by the user. According to this configuration, since update data not desired by the user is not saved, a storage medium having a small storage capacity can be used as the reception data storage unit 203.

Embodiment 2. FIG.
The mobile terminal of the map update system according to Embodiment 1 described above updates the map data every time update data is received, whereas in the map update system according to Embodiment 2 of the present invention, the mobile terminal is When the update data broadcast from the broadcasting station is received, it is stored, and when the map data is needed later, the map data is updated based on the stored update data. Is.

  The broadcast station and mobile terminal that constitute the map updating system according to Embodiment 2 of the present invention are the same as the broadcast station and mobile terminal according to Embodiment 1 shown in FIGS. 1 and 2, respectively, except for the operation of the mobile terminal. The same. Therefore, hereinafter, the operation of the mobile terminal will be mainly described.

  FIG. 16 is a flowchart showing data reception processing performed by the mobile terminal of the map update system according to Embodiment 2 of the present invention. This data reception processing is mainly performed in the reception unit 201, the reception data selection unit 202, the reception data storage unit 203, the reception data storage unit 204, and the map data update unit 205.

  In the data reception process, first, the broadcast update data is received (step ST60). Next, it is checked whether or not the update data received in step ST60 has been received (step ST61). If it is determined in step ST61 that the signal has been received, the sequence returns to step ST60, and the processes of steps ST60 and ST61 are repeated thereafter. In the middle of this repeated execution, if it is determined in step ST61 that it has not been received, the update data received in step ST60 is recorded in the received data storage means 203 (step ST62). Thereafter, the sequence returns to step ST60. Through the above processing, update data that has not been received is sequentially stored in the received data storage unit 203.

  Next, map data acquisition processing performed by the navigation application execution unit 211 of the mobile terminal will be described with reference to the flowchart shown in FIG. This map data acquisition processing is mainly performed by the map application storage unit 204, the map data update unit 205, and the navigation application execution unit 211 inside the control unit 210.

  In the map data acquisition process, first, map data necessary for executing the application is selected (step ST70). Next, the map data selected in step ST70 is acquired from the map data storage means 204 (step ST71). Next, it is examined whether or not there is update data corresponding to the acquired map data (step ST72). If it is determined that corresponding update data exists, the map data acquired in step ST71 is updated to the latest data based on the corresponding update data (step ST73). Thereafter, the map data acquisition process ends. If it is determined in step ST72 that the corresponding update data does not exist, the map data is not updated, and the map data acquisition process ends.

  As described above, the map update system according to Embodiment 2 of the present invention has the same effects as the map update system according to Embodiment 1. In addition, update data received by broadcasting is stored, and when necessary, map data is updated based on the stored update data. Will not be updated. As a result, an increase in processing load on the mobile terminal can be suppressed.

Embodiment 3 FIG.
In the map update system according to Embodiment 3 of the present invention, priority setting outside the broadcast area is performed based on the actual distance.

  The broadcast station and mobile terminal that constitute the map updating system according to Embodiment 3 of the present invention, except for the priority setting operation of the broadcast station, the broadcast station according to Embodiment 1 shown in FIG. 1 and FIG. It is the same as each mobile terminal. Therefore, the following description will focus on the operation of the broadcast station.

  The priority setting process performed at the broadcasting station of the map updating system according to the third embodiment is the same as that already described with reference to the flowchart shown in FIG. 8 except for the “priority setting process outside the broadcast area”. It is the same as that of Form 1. Accordingly, the priority setting processing outside the broadcast area performed in step ST13 of the flowchart shown in FIG. 8 will be described below with reference to the flowchart shown in FIG.

  In the priority setting process outside the broadcast area, first, the center coordinates of the area map to which the update data is applied are calculated (step ST80). Next, the center coordinates of the broadcast area are acquired (step ST81). Next, the actual distance (L) between the point indicated by the central coordinate acquired in step ST80 and the point indicated by the central coordinate acquired in step ST81, that is, a linear distance on the map is calculated ( Step ST82). Next, a priority setting table that defines the relationship between the priority and the distance as shown in FIG. 19 is referred to, and a value representing the priority according to the distance (L) is set in the priority table (step ST83). .

  As described above, according to the map update system according to the third embodiment of the present invention, since the actual distance from the broadcast area is preferentially updated from the map data that is close, it is used when the broadcast area is out of the broadcast area. It will be updated from the map data with high possibility of doing, and the convenience can be improved.

Embodiment 4 FIG.
In the map updating system according to Embodiment 4 of the present invention, priority setting outside the broadcast area is performed based on the distance along the road.

  The broadcast station and mobile terminal that constitute the map updating system according to Embodiment 4 of the present invention, except for the operation of setting the priority of the broadcast station, the broadcast station according to Embodiment 1 shown in FIG. 1 and FIG. It is the same as each mobile terminal. Therefore, the following description will focus on the operation of the broadcast station.

  The priority setting process performed in the broadcasting station of the map update system according to the fourth embodiment is the same as that already described with reference to the flowchart shown in FIG. 8 except for the “priority setting process outside the broadcast area”. It is the same as that of Form 1. Accordingly, the priority setting processing outside the broadcast area performed in step ST13 of the flowchart shown in FIG. 8 will be described below with reference to the flowchart shown in FIG.

  In the priority setting process outside the broadcast area, first, the center coordinates of the area map to which the update data is applied are calculated (step ST90). Next, the center coordinates of the broadcast area are acquired (step ST91). Next, the shortest route between the point indicated by the central coordinates acquired in step ST90 and the point indicated by the central coordinates acquired in step ST91 is searched by the navigation application execution unit 211 of the control unit 210, and the route distance Lr, that is, the distance along the road is calculated (step ST92). Next, the priority setting table shown in FIG. 19 is referred to, and the priority according to the route distance Lr is set in the priority table (step ST93).

  As described above, according to the map update system according to the fourth embodiment of the present invention, since the road distance from the broadcast area is preferentially updated from the map data that is close, when it is out of the broadcast area, It will be updated from the map data with high possibility of use, and the convenience can be improved.

Embodiment 5. FIG.
The map update system according to Embodiment 5 of the present invention is such that priority setting outside the broadcast area is performed based on travel time.

  The broadcasting station and the mobile terminal that constitute the map updating system according to the fifth embodiment of the present invention, except for the priority setting operation of the broadcasting station, the broadcasting station according to the first embodiment shown in FIG. 1 and FIG. It is the same as each mobile terminal. Therefore, the following description will focus on the operation of the broadcast station.

  The priority setting process performed in the broadcasting station of the map updating system according to the fifth embodiment is the same as that already described with reference to the flowchart shown in FIG. 8 except for the “priority setting process outside the broadcast area”. It is the same as that of Form 1. Accordingly, the priority setting process outside the broadcast area performed in step ST13 of the flowchart shown in FIG. 8 will be described below with reference to the flowchart shown in FIG.

  In the priority setting process outside the broadcast area, first, the center coordinates of the area map to which the update data is applied are calculated (step ST100). Next, the center coordinates of the broadcast area are acquired (step ST101). Next, the shortest path between the point indicated by the central coordinates acquired in step ST100 and the point indicated by the central coordinates acquired in step ST101 is searched by the navigation application executing unit 211 of the control unit 210, and further A travel time T, which is a time required to travel the searched shortest route, is calculated (step ST102). Next, a priority setting table that defines the relationship between priority and travel time as shown in FIG. 22 is referred to, and priority according to travel time (T) is set in the priority table (step ST103).

  As described above, according to the map update system according to the fifth embodiment of the present invention, the travel time from the broadcast area is updated with priority from the map data with a small travel time, so that it is used when it is out of the broadcast area. It will be updated from the map data with high possibility, and the convenience can be improved.

Embodiment 6 FIG.
The map update system according to Embodiment 6 of the present invention is such that the priority of map data having a high hierarchical level is low.

  The broadcast station and mobile terminal that constitute the map updating system according to Embodiment 6 of the present invention, except for the operation of setting the priority of the broadcast station, the broadcast station according to Embodiment 1 shown in FIG. 1 and FIG. It is the same as each mobile terminal. Therefore, the following description will focus on the operation of the broadcast station.

  The priority setting process performed in the broadcasting station of the map update system according to the sixth embodiment is the embodiment described with reference to the flowchart shown in FIG. 8 except for the “priority setting process outside the broadcast area”. Same as that of 1. Accordingly, the priority setting process outside the broadcast area performed in step ST13 of the flowchart shown in FIG. 8 will be described below with reference to the flowchart shown in FIG.

  In the priority setting process outside the broadcast area, first, the hierarchy level (L) of the update data to be transmitted is acquired (step ST110). Next, the loop variable i is initialized to zero (step ST111). Next, the loop variable i is incremented (+1) (step ST112). Next, it is checked whether or not the area determined in step ST10 in the flowchart of FIG. 8 is within the area + i shown in FIG. 11 (step ST113). In this case, as shown in FIG. 6, if the area indicated by the data range of the regional map data overlaps area + i even a little, it is regarded as being in area + i. If it is determined in step ST113 that it is within the range of area + i, the priority “i + 1 + L” is set in the priority table (step ST114), and the priority setting process outside the broadcast area ends.

  If it is determined in step ST113 that it is not within the range of area + i, it is checked whether or not the loop variable i is “n” (step ST115). If it is determined in step ST115 that the loop variable i is not “n”, the sequence returns to step ST112 and the above-described processing is repeated. On the other hand, if it is determined in step ST115 that the loop variable i is “n”, the priority “n + 1 + L” is set in the priority table (step ST116), and the priority setting process outside the broadcast area is ended. .

  As described above, according to the map updating system according to the sixth embodiment of the present invention, detailed map data with a narrow area range is preferentially updated with high frequency, and thus can be used during normal traveling. It will be updated from highly reliable map data, and convenience can be improved.

Embodiment 7 FIG.
The map update system according to Embodiment 7 of the present invention is such that schedule data broadcast from a broadcasting station is received by a mobile terminal.

  FIG. 24 is a block diagram showing a configuration of a map update system according to Embodiment 7 of the present invention. This map update system includes a data distribution center 301, a plurality of broadcasting stations # 1 to #N, and mobile terminals (not shown). The mobile terminal not shown is the same as the mobile terminal in the map update system according to the first embodiment.

  The data distribution center 301 distributes schedule data (details will be described later) and update data to the broadcasting stations # 1 to #N. The data distribution center 301 includes update data storage means 302, schedule data creation means 303, delivery data determination means 304, and data delivery means 305.

  The update data storage unit 302 stores update data. The update data stored in the update data storage unit 302 is sent to the delivery data determination unit 304. The schedule data creation unit 303 creates schedule data for each broadcasting station. The schedule data is created based on a plurality of broadcast station information # 1 to #N provided corresponding to the plurality of broadcast stations as shown in FIG. Each of the broadcast station information # 1 to #N includes a broadcast station name, a broadcast area, and a channel as shown in FIG.

  The delivery data determination unit 304 determines update data and schedule data to be delivered to each broadcasting station from the update data stored in the update data storage unit 302 and the schedule data created by the schedule data creation unit 303. The update data and schedule data determined by the delivery data determination unit 304 are sent to the data distribution unit 305. The data distribution unit 305 distributes the update data and schedule data determined by the distribution data determination unit 304 to each broadcasting station as distribution data.

  As shown in FIG. 26, the broadcast stations # 1 to #N perform data broadcasting in which broadcast data including a set of schedule data and update data is repeatedly transmitted over time. Each broadcasting station is configured by adding a data receiving means 310 to the broadcasting station (see FIG. 1) constituting the map updating system according to the first embodiment. The data receiving unit 310 receives update data and schedule data distributed from the data distribution center 301 and sends them to the broadcast data storage unit 101.

  Next, the format of schedule data transmitted from broadcast stations # 1 to #N will be described with reference to FIG. The schedule data includes a schedule expiration date indicating how long the schedule is valid, the number N of data to be broadcast, the broadcast time of the update data corresponding to the data IDs # 1 to #N and the data IDs # 1 to #N (start time) , End time).

  Next, the format of distribution data for each broadcasting station distributed from the data distribution center 301 will be described with reference to FIG. As shown in FIG. 28 (a), the distribution data is composed of broadcast station # 1 distribution data to broadcast station #N distribution data corresponding to broadcast stations # 1 to #N, respectively. As shown in FIG. 28 (b), the distribution data for each broadcasting station is composed of a broadcasting station ID, schedule data, and update data for specifying the broadcasting station. As shown in FIG. 26C, the update data constituting the distribution data is composed of the number of data and a plurality of area map update data # 0 to #n.

  Next, the operation of the map updating system according to Embodiment 7 of the present invention configured as described above will be described. First, operations of the broadcast stations # 1 to #N will be described. Each of the broadcast stations # 1 to #N receives only the distribution data in which the broadcast station ID included in the distribution data sent from the data distribution center 301 matches the own broadcast station ID, and the received distribution data Update data is broadcast according to the schedule data included.

  Next, schedule data reception processing performed in the mobile terminal will be described with reference to the flowchart shown in FIG. In this schedule data reception process, first, it is checked whether or not the schedule data has been received (step ST120). If it is determined in step ST120 that the schedule has been received, it is checked whether the schedule data is within the validity period (step ST121). In step ST121, if it is determined that it is within the expiration date, the schedule data reception process ends.

  On the other hand, if it is determined in step ST120 that the schedule data has not been received, and if it is determined in step ST121 that it is not within the expiration date, broadcast data is received (step ST122). Next, it is checked whether or not the broadcast data received in step ST122 is schedule data (step ST123). If it is determined in this step ST123 that it is not schedule data, the sequence returns to step ST122, and the broadcast data reception process described above is repeated. On the other hand, if it is determined in step ST123 that the broadcast data received in step ST122 is schedule data, the schedule data received in step ST120 is recorded in the received data storage means 101 (step ST124). With the above process, the schedule data reception process in the mobile terminal is completed.

  Next, update data reception processing performed at the mobile terminal after receiving schedule data will be described with reference to the flowchart shown in FIG. In the update data reception process, update data to be broadcast earliest from the current time is first identified based on the schedule data (step ST130). Next, it is checked whether or not the update data specified in step ST130 has been received (step ST131). If it is determined in step ST131 that it has been received, it is then checked whether it is the last schedule data (step ST132). If it is determined in step ST132 that it is the last schedule data, it is recognized that all the update data has been received. Then, the update data reception process ends, and the reception process by the reception unit 201 is stopped.

  On the other hand, when it is determined in step ST132 that the data is not the last data, update data to be broadcast next is specified (step ST133). Thereafter, the sequence returns to step ST131. If it is determined in step ST131 that the update data identified in step ST130 or step ST133 has not been received, broadcast reception processing by the reception unit 201 is started on the condition that the broadcast start time has been reached ( Step ST134). Then, update data is received (step ST135). Thus, the update data reception process ends.

  As described above, according to the map updating system according to Embodiment 7 of the present invention, the mobile terminal can start and stop the reception process according to the schedule data, and the reception process of the mobile terminal is not activated. However, the update data can be received.

Embodiment 8 FIG.
The map update system according to Embodiment 8 of the present invention is the same as the map update system according to Embodiment 7 described above in that the schedule data broadcast from the broadcast station is received by the mobile terminal. The schedule data is created not at the data distribution center 301 but at the broadcasting station.

  FIG. 31 is a block diagram showing a configuration of a map update system according to Embodiment 8 of the present invention. This map update system includes a data distribution center 301, a plurality of broadcasting stations # 1 to #N, and mobile terminals (not shown). The mobile terminal not shown is the same as the mobile terminal in the map update system according to the first embodiment.

  The data distribution center 301 distributes update data to the broadcasting stations # 1 to #N. The data distribution center 301 includes an update data storage unit 302 and a data distribution unit 305. The update data storage unit 302 stores update data. The update data stored in the update data storage unit 302 is sent to the data distribution unit 305. The data delivery unit 305 delivers the update data stored in the update data storage unit 302 to each broadcasting station.

  As shown in FIG. 26, the broadcast stations # 1 to #N perform data broadcasting in which broadcast data including a set of schedule data and update data is repeatedly transmitted over time. Each broadcasting station is configured by adding reception data selection means 401 and schedule data creation means 402 to the broadcasting station (see FIG. 24) constituting the map updating system according to the seventh embodiment.

  The reception data selection unit 401 selects update data broadcast by the own broadcast station from the update data transmitted from the data reception unit 310. The update data selected by the reception data selection unit 401 is sent to the broadcast data storage unit 101. Schedule data creation means 402 creates schedule data based on the broadcast station information of the own broadcast station. As shown in FIG. 25B, the broadcast station information is composed of a broadcast station name, a broadcast area, and a channel.

  FIG. 32 shows a format of distribution data for each broadcasting station distributed from the data distribution center 301. The distribution data is composed of the number of data and a plurality of area map update data # 0 to #n. Each of the broadcast stations # 1 to #N receives only the necessary area map update data from the distribution data from the data distribution center 301, and schedule data is generated from the received area map update data in the schedule data creation means 402. Create and broadcast.

  As described above, the map update system according to Embodiment 8 of the present invention has the same effects as the map update system according to Embodiment 7. In addition, since the schedule data is created by the broadcasting station, the processing load in the data distribution center 301 and the load on the communication path for transmitting the distribution data from the data distribution center 301 to the broadcasting stations # 1 to #N are reduced. can do.

Embodiment 9 FIG.
In the map update system according to Embodiment 9 of the present invention, when update data is broadcast from a plurality of broadcast stations having the same broadcast area, the update data in the broadcast area is always broadcast by any one of the broadcast stations. It is intended to be scheduled.

  The broadcast station and mobile terminal that constitute the map updating system according to Embodiment 9 of the present invention are the same as the broadcast station and mobile terminal according to Embodiment 1 shown in FIGS. 1 and 2, respectively, except for the following points. It is.

  FIG. 33 is a diagram showing a format of schedule data corresponding to a plurality of broadcasting stations transmitted from broadcasting stations # 1 to #N. The schedule data is composed of the number N of broadcasting stations and a plurality of broadcasting station # 1 schedule data to broadcasting station #N schedule data. The schedule data of each broadcasting station is the same as the configuration shown in FIG.

  Next, update data reception processing performed in the mobile terminal will be described with reference to the flowchart shown in FIG. In the update data reception process, first, it is checked whether or not all update data in the broadcast area has been received (step ST140). If it is determined in step ST140 that all update data has been received, the update data reception process ends. On the other hand, if it is determined in step ST140 that not all update data has been received, a broadcast station that is broadcasting update data in the broadcast area is selected with reference to the schedule data shown in FIG. Step ST141).

  Next, update data is received (step ST142). Next, it is checked whether or not the update data in the broadcast area of the broadcast station is broadcast end (step ST143). If it is determined in step ST143 that the broadcast has not ended, the sequence returns to step ST142, and update data is received. Thereafter, steps ST142 and ST143 are repeatedly executed. If it is determined in step ST143 that the broadcast has ended during the repeated execution, the sequence returns to step ST140 and the above-described processing is performed.

  By the above processing, for example, when the update data is broadcast in the broadcast station A, the broadcast station B, and the broadcast station C that share the same broadcast area, as shown in FIG. When the broadcasting of the broadcasting station B is finished, it is controlled by the schedule data so as to move to the broadcasting of the broadcasting station C, and when the broadcasting of the broadcasting station C is finished, it is controlled by the schedule data. Update data in the broadcast area is always broadcast.

  As described above, according to the map updating system according to the ninth embodiment of the present invention, the update data in the broadcast area is broadcast from any broadcast station at any time, and the mobile terminal always receives the update data. Since it can receive, update of map data can be performed in a short period of time.

Embodiment 10 FIG.
The map update system according to the tenth embodiment of the present invention is such that schedule data is acquired by communication means other than broadcasting.

  FIG. 36 is a block diagram showing a configuration of a mobile terminal constituting the map update system according to Embodiment 10 of the present invention. This mobile terminal is configured by adding communication means 212 to the mobile terminal according to Embodiment 1 shown in FIG. The communication unit 212 controls communication between the mobile terminal and the data distribution center 301.

  FIG. 37 is a block diagram showing structures of data distribution center 301 and broadcast stations # 1 to #n constituting the map update system according to Embodiment 10 of the present invention. The data distribution center 301 is configured by adding a communication unit 311 to the data distribution center according to the seventh embodiment shown in FIG. The communication unit 311 controls communication between the data distribution center 301 and the mobile terminal.

  Next, schedule data reception processing performed in the mobile terminal of the map update system according to Embodiment 10 of the present invention configured as described above will be described with reference to the flowchart shown in FIG. In this schedule data reception process, first, it is checked whether or not the schedule data has been received (step ST150). If it is determined in step ST150 that the schedule has been received, it is checked whether the schedule data is within the valid period (step ST151). In step ST151, if it is determined that it is within the expiration date, the schedule data reception process ends.

  On the other hand, if it is determined in step ST150 that the schedule data has not been received and if it is determined in step ST151 that the schedule data is not within the expiration date, the communication means 212 transmits the schedule data to the data distribution center 301. A request is sent (step ST152). Next, a broadcasting station ID of a currently receivable broadcasting station is transmitted by communication means 212 (step ST153). Next, schedule data is received from the data distribution center 301 via the communication means 212 (step ST154). Next, the schedule data received in step ST154 is recorded in the received data storage means 203 (step ST155). Thus, the schedule data reception process ends.

  Next, schedule data transmission processing performed in the data distribution center 301 will be described with reference to the flowchart shown in FIG. In this schedule data transmission process, first, a schedule data transmission request is received from the mobile terminal (step ST160). Next, the broadcast station ID is received from the mobile terminal (step ST161). Then, schedule data corresponding to the broadcast station ID is transmitted to the mobile terminal (step ST162). Thus, the schedule data transmission process ends.

  As described above, according to the map update system according to the tenth embodiment of the present invention, the mobile terminal can obtain schedule data immediately from the data distribution center 301 via the communication means 212 when necessary.

Embodiment 11 FIG.
In the map update system according to Embodiment 11 of the present invention, update data is obtained by communication means other than broadcast.

  The configuration of the map update system according to Embodiment 11 of the present invention is the same as that of the map update system according to Embodiment 10. However, the communication means 212 of the mobile terminal and the communication means 311 of the data distribution center 301 are used for sending and receiving update data, not schedule data.

  Next, the operation of the map update system according to Embodiment 11 of the present invention will be described. FIG. 40 is a flowchart showing map data acquisition processing performed by the navigation application execution unit 211 in the control unit 210 of the mobile terminal. In this map data acquisition process, first, map data necessary for executing the application is selected (ST170). Next, the map data selected in step ST170 is acquired from the map data storage unit 204 (step ST171). Next, it is checked whether or not update data corresponding to the map data acquired in step ST171 exists in the received data storage means 203 (step ST172). If it is determined in step ST172 that there is update data corresponding to the acquired map data, the acquired map data is updated to the latest data in accordance with the update data (step ST176).

  If it is determined in step ST172 that there is no update data corresponding to the acquired map data, an update data transmission request is transmitted to the data distribution center 301 (step ST173). Next, the data ID of the update data necessary for updating the acquired map data is transmitted (step ST174). Thereafter, update data sent from the data distribution center 301 is received (step ST175). Thereafter, the sequence proceeds to step ST176, and the map data acquired in step ST171 is updated to the latest data in accordance with the received update data.

  Next, update data transmission processing performed in the data distribution center 301 of the map update system according to Embodiment 11 of the present invention will be described with reference to the flowchart shown in FIG. In this update data transmission process, first, an update data transmission request sent from the mobile terminal is received (step ST180). Next, the data ID sent from the mobile terminal is received (step ST181). Next, update data corresponding to the data ID received in step ST181 is transmitted to the mobile terminal (step ST182).

  As described above, according to the map update system according to the eleventh embodiment of the present invention, when update data that has not been received is required, the update data is received by communication, and the update data is received. The map data can be updated to the latest data.

Embodiment 12 FIG.
The map update system according to the twelfth embodiment of the present invention resets priorities that have already been set according to the program schedule.

  The broadcast station and mobile terminal constituting the map updating system according to Embodiment 12 of the present invention are the same as the broadcast station and mobile terminal according to Embodiment 1 shown in FIGS. 1 and 2, respectively, except for the operation of the broadcast station. The same. Therefore, the following description will focus on the operation of the broadcast station.

  FIG. 42 is a diagram showing an example of a program schedule such as a television (hereinafter abbreviated as “TV”) or a radio broadcast held by the broadcasting station of the map updating system according to the twelfth embodiment. As shown in FIG. 42A, the program schedule includes a broadcast day, the number N of programs on the broadcast day, and a plurality of program information # 0 to # N-1. Each of the program information # 0 to # N-1 is related to the program rank, program start / end time, and program determined by the program title, genre, program audience rating, etc., as shown in FIG. The program-related update data number M indicating the number of update data in the area to be processed and data IDs # 0 to # M-1 of a plurality of program-related update data. If there is no program-related update data, the program-related update data number M is set to “0”.

  In the broadcasting station constituting the map update system according to the twelfth embodiment, the update data for which the priority setting has been completed as described in the map update system according to the first to sixth embodiments is performed. The priority is reset by referring to the program schedule.

  Next, priority resetting processing based on a program schedule performed at a broadcasting station will be described with reference to the flowchart shown in FIG. In this priority resetting process, first, the priority “P” of the update data is acquired (step ST190). Next, a data ID is acquired (step ST191). Next, it is checked whether or not the update data corresponding to the data ID acquired in step ST191 is program-related update data of any program information shown in FIG. 42 (step ST192).

  If it is determined in this step ST192 that it is program-related update data, the priority is reset to “PR” (step ST193). Here, “R” is a value that varies depending on the program. On the other hand, if it is determined that it is not program-related update data, the process of step ST193 is skipped. Next, it is checked whether or not all the update data have been processed (step ST194). If it is determined that all the update data has not been processed, the sequence returns to step ST190, and the above-described processing is repeated. On the other hand, when it is determined that all the update data has been processed, the priority resetting process based on the program schedule ends.

  As described above, according to the map updating system according to the twelfth embodiment of the present invention, it is possible to preferentially update the map data of the area that is taken up by TV, radio broadcasting, etc. and is highly interested by the viewer. it can

Embodiment 13 FIG.
In the map update system according to the thirteenth embodiment of the present invention, the priority is changed according to the genre and rank of the program.

  The broadcast station and mobile terminal constituting the map updating system according to Embodiment 13 of the present invention are the same as the broadcast station and mobile terminal according to Embodiment 1 shown in FIGS. 1 and 2, respectively, except for the operation of the broadcast station. The same. Therefore, the following description will focus on the operation of the broadcast station.

  In the map update system broadcasting station according to the thirteenth embodiment, the value of “R” used for the priority resetting in ST193 shown in the flowchart of FIG. 42 is changed depending on the genre and / or rank of the program. That is, when the program is popular and the program rank is high, “R” is changed to a large value.

  As described above, according to the map update system of the thirteenth embodiment of the present invention, it is possible to preferentially update data in a region where the viewer's interest related to a popular program is higher.

Embodiment 14 FIG.
The map update system according to the thirteenth embodiment of the present invention preferentially broadcasts program-related update data being broadcast.

  The broadcast station and mobile terminal constituting the map update system according to Embodiment 14 of the present invention are the same as the broadcast station and mobile terminal according to Embodiment 1 shown in FIGS. 1 and 2, respectively, except for the operation of the broadcast station. The same. Therefore, the following description will focus on the operation of the broadcast station.

  Hereinafter, data broadcasting processing performed at the broadcasting station will be described with reference to the flowchart shown in FIG. In this data broadcasting process, first, program information of a currently broadcast program is acquired (step ST200). Next, it is checked whether or not program-related update data exists (step ST201). Here, if it is determined that the program-related update data exists, the program-related update data is broadcast (step ST202). On the other hand, if it is determined that there is no program-related update data, update data is broadcast according to normal priority (step ST203).

  As described above, according to the map updating system according to the thirteenth embodiment of the present invention, it is possible to preferentially update data in a region that is currently being broadcast and has high viewer interest.

  In the map update system according to the fourteenth embodiment described above, only the program-related update data is broadcast during the program broadcast. However, the update data broadcast with the normal priority is appropriately performed even during the program broadcast. be able to. For example, it can be configured to switch every time one update data is broadcast.

It is a block diagram which shows the structure of the broadcasting station which comprises the map update system which concerns on Embodiment 1 of this invention. It is a block diagram which shows the structure of the mobile terminal which comprises the map update system which concerns on Embodiment 1 of this invention. It is a block diagram which shows the format of the map data used with the map update system which concerns on Embodiment 1 of this invention. It is a figure for demonstrating the area obtained by dividing | segmenting the whole map performed with the map update system which concerns on Embodiment 1 of this invention into plurality. It is a figure which shows the format of the area map data used with the map update system which concerns on Embodiment 1 of this invention. It is a figure for demonstrating the hierarchy level used with the map update system which concerns on Embodiment 1 of this invention. It is a figure which shows the format of the update data used with the map update system which concerns on Embodiment 1 of this invention. It is a flowchart which shows the priority setting process performed in the broadcasting station of the map update system which concerns on Embodiment 1 of this invention. It is a figure which shows the priority table used with the map update system which concerns on Embodiment 1 of this invention. It is a flowchart which shows the detail of the priority setting process outside a broadcast area performed by step ST13 of FIG. It is a figure for demonstrating the priority setting outside a broadcast area performed by the broadcasting station of the map update system which concerns on Embodiment 1 of this invention. It is a flowchart which shows the broadcast process performed in the broadcasting station of the map update system which concerns on Embodiment 1 of this invention. It is a figure for demonstrating the order and frequency of the update data transmitted by the broadcast process of the update data shown in FIG. It is a flowchart which shows the data reception process performed in the mobile terminal of the map update system which concerns on Embodiment 1 of this invention. It is a flowchart which shows the map data acquisition process performed by the navigation application execution means of the mobile terminal of the map update system which concerns on Embodiment 1 of this invention. It is a flowchart which shows the data reception process performed in the mobile terminal of the map update system which concerns on Embodiment 2 of this invention. It is a flowchart which shows the map data acquisition process performed by the navigation application execution means of the mobile terminal of the map update system which concerns on Embodiment 2 of this invention. It is a flowchart which shows the priority setting process outside a broadcast area in the priority setting process performed in the broadcasting station of the map update system which concerns on Embodiment 3 of this invention. It is a figure which shows the priority setting table used by the priority setting process outside a broadcast area performed in the broadcasting station of the map update system which concerns on Embodiment 3 of this invention. It is a flowchart which shows the priority setting process outside a broadcast area in the priority setting process performed in the broadcasting station of the map update system which concerns on Embodiment 4 of this invention. It is a flowchart which shows the priority setting process outside a broadcast area in the priority setting process performed in the broadcasting station of the map update system which concerns on Embodiment 5 of this invention. It is a figure which shows the priority setting table used by the priority setting process outside a broadcast area performed in the broadcasting station of the map update system which concerns on Embodiment 5 of this invention. It is a flowchart which shows the priority setting process outside a broadcast area in the priority setting process performed in the broadcasting station of the map update system which concerns on Embodiment 6 of this invention. It is a block diagram which shows the structure of the map update system which concerns on Embodiment 7 of this invention. It is a figure which shows the format of the broadcast station information hold | maintained at the data distribution center of the map update system which concerns on Embodiment 7 of this invention. It is a figure for demonstrating the broadcast data transmitted from the broadcasting station of the map update system which concerns on Embodiment 7 of this invention. It is a figure which shows the format of the schedule data transmitted from the broadcasting station of the map update system which concerns on Embodiment 7 of this invention. It is a figure which shows the format of the delivery data transmitted from the data delivery center of the map update system which concerns on Embodiment 7 of this invention. It is a flowchart which shows the schedule data reception process performed in the mobile terminal of the map update system which concerns on Embodiment 7 of this invention. It is a flowchart which shows the reception process of the update data performed in the mobile terminal of the map update system which concerns on Embodiment 7 of this invention. It is a block diagram which shows the structure of the map update system which concerns on Embodiment 8 of this invention. It is a figure which shows the format of the delivery data transmitted from the data delivery center of the map update system which concerns on Embodiment 8 of this invention. It is a figure which shows the format of the schedule data corresponding to multiple broadcasting stations transmitted from the broadcasting station of the map update system which concerns on Embodiment 9 of this invention. It is a flowchart which shows the reception process of the update data performed in the mobile terminal of the map update system which concerns on Embodiment 9 of this invention. It is a figure for demonstrating operation | movement of the map update system which concerns on Embodiment 9 of this invention. It is a block diagram which shows the structure of the map update system which concerns on Embodiment 10 of this invention. It is a block diagram which shows the structure of the data distribution center and broadcasting station which comprise the map update system which concerns on Embodiment 10 of this invention. It is a flowchart which shows the schedule data reception process performed in the mobile terminal of the map update system which concerns on Embodiment 10 of this invention. It is a flowchart which shows the schedule data transmission process performed in the data distribution center of the map update system which concerns on Embodiment 10 of this invention. It is a flowchart which shows the map data acquisition process performed in the mobile terminal of the map update system which concerns on Embodiment 11 of this invention. It is a flowchart which shows the transmission process of the update data performed in the data distribution center of the map update system which concerns on Embodiment 11 of this invention. It is a figure which shows the example of the program schedule which the broadcasting station of the map update system concerning Embodiment 12 of this invention has. It is a flowchart which shows the priority reset process by the program schedule performed in the broadcasting station of the map update system which concerns on Embodiment 12 of this invention. It is a flowchart which shows the data broadcasting process performed in the broadcasting station of the map update system which concerns on Embodiment 14 of this invention.

Explanation of symbols

101 broadcast data storage means, 102 priority setting means, 103 in-broadcast area determination means, 104 broadcast data determination means, 105 broadcast means, 201 reception means, 202 reception data selection means, 203 reception data storage means, 204 map data storage means 205 Map data update means 206 Current position specifying means 207 Operation means 208 Display means 209 Current date and time acquisition means 210 Control means 211 Navigation application execution means 212 Communication means 301 Data distribution center 302 Update data storage Means 303, schedule data creation means 304 delivery data determination means 305 data delivery means 310 data reception means 311 communication means 401 reception data selection means 402 schedule data creation means

Claims (28)

In a map updating system comprising a broadcasting station having a predetermined broadcasting area and a mobile terminal,
The broadcasting station
Broadcast data storage means for storing a plurality of update data for updating map data of a plurality of regions;
For a plurality of update data stored in the broadcast data storage means, update data applied to map data in the broadcast area is broadcast at a higher frequency than update data applied to map data outside the broadcast area. Priority setting means for setting the priority,
Broadcast means for broadcasting update data determined according to the priority set by the priority setting means from among a plurality of update data stored in the broadcast data storage means,
The mobile terminal
Receiving means for receiving update data broadcast from the broadcasting station;
Map data storage means for storing map data;
A map update system comprising: map data update means for updating map data stored in the map data storage means based on update data received by the receiving means. The priority setting means, with respect to a plurality of update data stored in the broadcast data storage means, the update data applied to the map data outside the broadcast area is less frequently as the actual distance from the broadcast area increases. 2. The map updating system according to claim 1, wherein the priority is set so that it is broadcast on the map. The broadcast station includes a navigation application execution means for calculating a distance along the road that represents the distance of the shortest path between the center of the broadcast area and the center of the area to which the update data is applied,
The priority setting means, for a plurality of update data stored in the broadcast data storage means, the update data applied to the map data outside the broadcast area from the broadcast area calculated by the navigation application execution means 2. The map updating system according to claim 1, wherein the priority is set so that broadcasting is performed less frequently as the distance along the road increases. The broadcast station includes a navigation application execution means for calculating a travel time required to move the distance of the shortest route between the center of the broadcast area and the center of the area to which the update data is applied,
The priority setting means, for a plurality of update data stored in the broadcast data storage means, the update data applied to the map data outside the broadcast area from the broadcast area calculated by the navigation application execution means 2. The map updating system according to claim 1, wherein priority is set so that the travel time is broadcasted less frequently as the travel time increases. The broadcast data storage means stores a plurality of update data applied to map data of a plurality of hierarchical levels in which a detailed map is drawn as the hierarchical level becomes lower,
The priority setting means broadcasts the update data applied to the map data outside the broadcast area less frequently as the hierarchical level becomes higher than the plurality of update data stored in the broadcast data storage means. The map update system according to claim 1, wherein priority is set as follows. The broadcast data storage means further stores schedule data including the broadcast time of the update data,
The broadcast means broadcasts schedule data stored in the broadcast data storage means,
The receiving means stops the receiving process after receiving the schedule data broadcast from the broadcasting means, activates the receiving process when the broadcast time of the update data included in the schedule data has arrived, and is broadcast from the broadcasting station. The map update system according to claim 1, wherein update data is received. A broadcasting station consists of a plurality of broadcasting stations that broadcast to the same broadcasting area,
Each broadcast data storage means of the plurality of broadcast stations further stores schedule data having different broadcast times of update data,
2. The map updating system according to claim 1, wherein each broadcasting unit of the plurality of broadcasting stations broadcasts schedule data stored in the broadcasting data storage unit. 8. The map update system according to claim 7, wherein the receiving means selects a broadcast station that is broadcasting update data in the same broadcast area, and receives update data from the selected broadcast station. The mobile terminal includes a communication means for receiving schedule data through a route different from the broadcast from the broadcast station,
The map updating system according to claim 1, wherein the receiving means receives update data broadcast from a broadcasting station based on the schedule data received by the communication means. The mobile terminal includes communication means for receiving update data through a different route from the broadcast from the broadcast station,
2. The map update system according to claim 1, wherein the map data update means updates the map data stored in the map data storage means based on the update data received by the communication means. The broadcast station has program information representing a program schedule,
The priority setting means resets the priority so that a plurality of update data stored in the broadcast data storage means is broadcast at a frequency according to the program information. Map update system. The priority setting means resets the priority so that a plurality of update data stored in the broadcast data storage means are broadcast at a frequency according to the genre or program rank of the program included in the program information. The map update system according to claim 11. The broadcast station has program information representing a program schedule,
2. The map updating system according to claim 1, wherein the priority setting means resets the priority so that the priority of the update data related to the program being broadcast indicated by the program information is high. Receiving from a broadcasting station having a predetermined broadcast area, update data applied to map data in the broadcast area is received at a higher frequency than update data applied to map data outside the broadcast area. Means,
Map data storage means for storing map data;
A mobile terminal comprising map data update means for updating map data stored in the map data storage means based on update data received by the receiving means. The receiving means stops the reception process after receiving the schedule data broadcast from the broadcast station, starts the reception process when the broadcast time of the update data included in the schedule data has arrived, and is broadcast from the broadcast station The mobile terminal according to claim 14, wherein the mobile terminal receives update data. 15. The reception means selects update data from a plurality of broadcast stations that broadcast to the same broadcast area, and receives update data from the selected broadcast station. The described mobile terminal. A communication means for receiving schedule data through a different route from the broadcasting from the broadcasting station,
The mobile terminal according to claim 14, wherein the receiving means receives update data broadcast from a broadcasting station based on the schedule data received by the communication means. A communication means for receiving update data through a different route from the broadcast from the broadcast station,
15. The mobile terminal according to claim 14, wherein the map data update means updates map data stored in the map data storage means based on the update data received by the communication means. In a broadcasting station having a predetermined broadcasting area,
Broadcast data storage means for storing a plurality of update data for updating map data of a plurality of regions;
For a plurality of update data stored in the broadcast data storage means, update data applied to map data in the broadcast area is broadcast at a higher frequency than update data applied to map data outside the broadcast area. Priority setting means for setting the priority,
A broadcasting station comprising broadcasting means for broadcasting update data determined according to the priority set by the priority setting means from among a plurality of update data stored in the broadcast data storage means. The priority setting means, with respect to a plurality of update data stored in the broadcast data storage means, the update data applied to the map data outside the broadcast area is less frequently as the actual distance from the broadcast area increases. 20. The broadcasting station according to claim 19, wherein the priority is set so as to be broadcast on. A navigation application executing means for calculating a distance along the road that represents the distance of the shortest route between the center of the broadcast area and the center of the area to which the update data is applied;
The priority setting means, for a plurality of update data stored in the broadcast data storage means, the update data applied to the map data outside the broadcast area from the broadcast area calculated by the navigation application execution means 20. The broadcasting station according to claim 19, wherein the priority is set so that broadcasting is performed less frequently as the distance along the road increases. A navigation application executing means for calculating a travel time required to move the distance of the shortest route between the center of the broadcast area and the center of the area to which the update data is applied;
The priority setting means, for a plurality of update data stored in the broadcast data storage means, the update data applied to the map data outside the broadcast area from the broadcast area calculated by the navigation application execution means 20. The broadcasting station according to claim 19, wherein the priority is set so that it is broadcast less frequently as the travel time increases. The broadcast data storage means stores a plurality of update data applied to map data of a plurality of hierarchical levels in which a detailed map is drawn as the hierarchical level becomes lower,
The priority setting means broadcasts the update data applied to the map data outside the broadcast area less frequently as the hierarchical level becomes higher than the plurality of update data stored in the broadcast data storage means. 20. The broadcasting station according to claim 19, wherein priority is set as follows. The broadcast data storage means further stores schedule data including the broadcast time of the update data,
The broadcasting station according to claim 19, wherein the broadcasting means broadcasts schedule data stored in the broadcasting data storage means. A broadcasting station consists of a plurality of broadcasting stations that broadcast to the same broadcasting area,
Each broadcast data storage means of the plurality of broadcast stations further stores schedule data having different broadcast times of update data,
20. The broadcasting station according to claim 19, wherein each broadcasting means of the plurality of broadcasting stations broadcasts schedule data stored in the broadcast data storage means. It has program information that represents the program schedule,
The priority setting means resets the priority so that a plurality of update data stored in the broadcast data storage means is broadcast at a frequency according to the program information. Broadcaster. The priority setting means resets the priority so that a plurality of update data stored in the broadcast data storage means are broadcast at a frequency according to the genre or program rank of the program included in the program information. 27. A broadcasting station according to claim 26. It has program information that represents the program schedule,
20. The broadcasting station according to claim 19, wherein the priority setting means resets the priority so that the priority of update data related to the program being broadcast indicated by the program information is high.

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