JP2006275838A - Navigation server, its control method and control program, navigation terminal and method, navigation system, and its control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation server capable of performing guidance to an entrance of a destination by specifying the entrance of the destination in a navigation terminal and accumulating and providing the entrance information on the side of the server and provide its control method, its control program, a navigation terminal, a navigation method, a navigation program, a navigation system, and its control method. <P>SOLUTION: The terminal N specifies coordinates of an entrance of a parking lot in a destination facility on the basis of travel route data (track information) within a prescribed distance to a destination of a vehicle and transmits the coordinates of the entrance to a server S with destination information. The server S compares the coordinates of an entrance with already registered coordinates (from second coordinates to fourth coordinates) of the entrance in the facility on the basis of information transmitted from the terminal N, makes rearrangement sequentially from candidates having a larger specific frequency, and accumulates data. The server S transfers second coordinate information to the terminal N upon the reception of a transfer request for the second coordinates from the terminal N. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a navigation technique for performing route guidance to a destination entrance with reference to information stored in a server.

  In recent years, navigation devices that have rapidly become popular have a database obtained by quantifying roads, place names, buildings, etc. on a map stored in a storage medium such as a CD-ROM, and set a destination based on the digital map database. The taxiway is searched and calculated according to the road database stored in the device in advance, and the obtained vehicle and the vehicle position calculated sequentially from navigation data such as GPS, gyroscope, vehicle speed pulse, etc. are displayed on the screen. In addition, the optimum route to the designated destination is also calculated and guided (navigated) by screen display or synthesized voice.

In such a navigation apparatus, when setting a destination, for example, a desired facility such as a department store or an amusement park is searched from the search data, and the facility is specified. The position is set as the destination.
JP 2004-20304 A JP 2003-337035 A

  However, the destination is substantially the place that becomes the entrance / exit of the vehicle when using the facility or the entrance / exit of the parking lot where the vehicle is parked. For example, even if the location of the facility is designated as the destination, the parking lot is not necessarily located in the facility, such as being provided at a location different from the facility. In addition to the parking lot, the entrance of the vehicle in the facility may face a road different from the road around the destination guided by the navigation device. In any case, when the user arrives around the destination facility and navigation is completed, the user searches for the facility parking lot or the entrance to the parking lot using the map displayed on the navigation terminal and the street sign. It was inconvenient and time consuming.

  In addition, the current map database manufacturer maintains the entrance / exit data of parking lots at department stores and tourist facilities as the second coordinate of the facility, but it takes time and cost to investigate and maintain the location, and the target facility is not sufficient. . Therefore, how to maintain data efficiently has been a problem.

  The present invention solves the above-described problems. The purpose of the present invention is to specify the gateway of the destination in the navigation terminal, and store and provide the gateway information on the server side, thereby reaching the destination gateway. A navigation server capable of providing guidance, a control method and control program therefor, a navigation terminal, a navigation method and program, a navigation system and a control method therefor.

  In order to achieve the above object, the invention of claim 1 (claim 10 or 19) is configured to provide information to the terminal by connecting to the navigation terminal via a telecommunication line and transmitting / receiving data to / from the terminal. Destination information including the name of the destination, etc. transmitted from the terminal, and travel route data within a certain distance to the destination, on the map Means (process) for receiving the destination coordinates specified based on the trajectory information including the position coordinates of the destination, and correlating the gateway coordinates with the destination in addition to the destination coordinates. And a coordinate recording means (process) for recording as two coordinates.

  The invention of claim 6 (claim 15 or 24) is connected to the navigation server according to any one of claims 1 to 5 (claims 10 to 14) via an electric communication line to transmit and receive data. On the other hand, in a navigation terminal (navigation method and program) for guiding a route from the departure place to the destination, a locus recording means (processing) for sequentially recording traveling route data within a certain distance to the destination as locus information; An entry / exit specifying means (process) for specifying the coordinates of the entrance / exit of the destination from trajectory information, and a means (process) for transmitting the destination information including the entrance / exit coordinates and the name of the destination to the server. It is characterized by that.

  The invention of claim 9 (invention 18) is the navigation server (navigation server control method) according to any one of claims 1 to 5 (invention 10 to 14) and claims 6 to 8 (invoice). The navigation terminal (navigation method) according to items 15 to 17) is provided.

  In the invention described in each claim as described above, at the terminal, the destination and the vehicle entrance / exit coordinates at the destination are specified from the travel route data within a certain distance to the destination, and the destination information is used as the data. By transmitting to the server as trajectory information including the server, the server can record the specified entrance / exit coordinates as second coordinates in addition to the destination coordinates in association with the destination. Therefore, if such a navigation server, terminal, and system are used, after the user arrives at the destination facility, etc., guidance guidance to the destination entrance / exit can be accurately obtained without having to bother searching for the entrance / exit of the facility or parking lot. It can be carried out. In addition, it is possible to download the trajectory information from the terminal to the server, and specify and store the destination entrance / exit information from the information.

  The invention according to claim 2 (invention 11 or 20) is the invention according to claim 1 (invention 10 or 19), wherein the second coordinates are sent to the terminal in response to a request from the terminal. And means for transmitting (processing).

  In the above-described aspect, the second coordinates, which are destination entrance / exit information, can be provided in response to the request of the terminal, so that the terminal side can acquire the second coordinates from the server only when necessary. At the same time, it is possible to obtain the latest information that is sequentially updated with the trajectory information from other vehicles.

  The invention described in claim 3 (Claim 12 or 21) is the invention described in Claim 1 or 2 (Claim 10, 11, 19 or 20), wherein the coordinate recording means (process) sets the entrance / exit coordinates. In the case of recording as the second coordinates, when the second coordinates are already registered, the recording frequency of the second coordinates is counted.

  In the above-described aspect, by counting the recording frequency of the second coordinates specified based on the trajectory information provided from the terminal, if the entry / exit coordinates are provided from the terminal at a high frequency, the corresponding coordinates As a result, it is possible to store and provide more accurate entrance / exit coordinates.

  The invention according to claim 4 (claim 13 or 22) is the coordinate recording means (process) according to any one of claims 1 to 3 (claims 10 to 12 or claims 19 to 21). ), When recording the entrance / exit coordinates as the second coordinates, if the second coordinates are already registered, the entrance / exit coordinates are compared with the already recorded second coordinates, When the inter-coordinate distance is within a certain distance, the entry / exit coordinates are recorded as a second coordinate, and when the inter-coordinate distance is not within a certain distance, the entry / exit coordinates are recorded as another third coordinate. It is characterized by doing.

  In the above aspect, the coordinates provided for each vehicle may vary depending on the terminal position accuracy, and there may be multiple destinations at the destination. For example, if the doorway coordinates specified by is within a predetermined distance, such as within 5 m, this is regarded as an error and recorded as the second coordinate, and if it is more than a predetermined distance away, it is regarded as another doorway. Record as 3 coordinates. As a result, it is possible to cope with a case where there are a plurality of entrances / exits at the terminal location system and the destination, and it is possible to store and provide more accurate entrance / exit coordinates.

  The invention according to claim 5 (claim 14 or 23) is the invention according to any one of claims 1 to 4 (claims 10 to 13 or claims 19 to 22). Each of these coordinates is characterized in that the frequency specified as the entrance / exit coordinates is counted and recorded in descending order of frequency.

  In the above-described aspect, when there are a plurality of entrances / exits at the destination, a plurality of the second, third or fourth coordinates are recorded, and further, each recording frequency is counted and recorded in order of increasing frequency. However, by providing them in descending order, it is possible to accumulate and provide entrance / exit coordinates that are statistically most accessible to the vehicle and highly accurate as information.

  The invention described in claim 7 (Claim 16 or 25) is the invention described in Claim 6 (Claim 15 or 24). In the invention described in Claim 6 (Claim 15 or 24), the gateway specifying means (process) is the last of the position coordinates in the trajectory information. The coordinates are sequentially compared with the map data of the destination, and when the coordinates are on a road, the coordinates are specified as the entrance / exit coordinates.

  In the above-described aspect, the vehicle is provided to the facility by providing the terminal with a path of the route before the stop and searching the coordinates on the road based on the last recorded coordinates. The entered coordinates can be accurately determined, and more accurate entrance / exit coordinates can be specified.

  The invention described in claim 8 (Claim 17 or 26) is the invention described in Claim 6 (Claim 15 or 24), wherein the trajectory recording means (process) is configured such that the position coordinates are roads as the trajectory information. It is characterized in that it is sequentially determined whether it is above or recorded.

  In the above-described aspect, the trajectory recording means sequentially determines and records whether the travel route data is on the road, so that the map data indicates whether the entrance / exit is on the road. This makes it possible to increase the processing speed.

  As described above, according to the present invention, the navigation server can provide guidance to the destination entrance / exit by specifying the entrance / exit of the destination in the navigation terminal and storing and providing the entrance / exit information on the server side. , Its control method and control program, navigation terminal, navigation method and program, navigation system and its control method can be provided.

  Next, the navigation server of the present invention (hereinafter referred to as “server”), the corresponding control method and control program, the navigation terminal (hereinafter referred to as “present device” or “terminal”), the corresponding navigation method, navigation system, and The best mode for carrying out the control method will be described with reference to the drawings. It should be noted that the assumptions common to the prior art already described are not restated.

(1) First embodiment
[1. Constitution]
The configuration of the navigation terminal and the navigation server of this embodiment will be described. [1-1. Configuration of navigation terminal]
[1-1-1. overall structure]
This apparatus is an in-vehicle navigation terminal and includes the following elements shown in the functional block diagram of FIG. That is, an absolute position / azimuth detector 1 including a GPS antenna and a receiver, a relative azimuth detector 2 using a gyro and the like, and a vehicle speed detector 3 for processing a pulse obtained from a vehicle are used for navigation data for navigation. It is a sensor group to obtain. The disk control unit 12 is a drive such as a hard disk, a DVD-ROM, or a CD-ROM, and serves to read a database of road map data using road links, and provides information from the server S via a mobile phone (so-called It can also be replaced by off-board).

  The processing unit 4 is a main CPU that controls the entire system and its peripheral circuits, and performs navigation processing including calculation of the current position based on navigation data obtained from the sensor groups (1 to 3) and map matching. This is a part that uses data.

  Of the memory M, the ROM 5 stores a program for the CPU of the processing unit 4, the DRAM (dynamic RAM) 6 stores data processed by the CPU, and the SRAM (static RAM) 7 Information such as settings is backed up by the battery even when the main power is turned off, and a VRAM (video RAM) 8 is used for writing a bit pattern of an image displayed on the display unit 10.

  The display unit 10 is a part for displaying information such as a map and a menu, and is a TFT liquid crystal panel, for example. The input unit 11 is a part that receives input of various commands and information from the user, and is a switch or a touch panel, for example. The user interface unit 9 is a part that connects the display unit 10 or the input unit 11 and the processing unit 4 to perform signal transmission, conversion, timing control, and the like.

  The communication device and processing unit 13 is a part that receives FM broadcast waves and extracts desired data such as VICS, and is a part that communicates with the server S via a network device such as a wired or wireless modem.

[1-1-2. Role of main CPU and its peripheral circuits]
The main CPU and its peripheral circuit 4 are configured to realize the roles of the following parts shown in FIG. 1 by the operation of the program as described above. In other words, the current position calculation unit 42 is means for sequentially calculating the own vehicle position, and specifically, is configured to calculate the own vehicle position by combining GPS navigation positioning and autonomous navigation positioning. . Here, in GPS navigation positioning, the current position is calculated using information obtained by the absolute position / orientation detection unit 1 based on radio waves from an artificial satellite. In the autonomous navigation positioning, the current position is calculated using information obtained from the relative bearing detection unit 2 and the vehicle speed detection unit 3 based on the geomagnetism and the speed of the host vehicle.

  The destination receiving unit 40 is a means for receiving a designation of a destination, that is, an input by searching for a facility from a database in which the road map data is recorded or a cursor designation on a map. The route setting unit 41 displays a route from the current position detected by the current position calculation unit 42 to the destination designated by the destination reception unit 40, a map database stored in the disk control unit 12, or It is a means for setting a route obtained as a result of calculation by referring to the map database 26 stored in the server S via the communication control unit 48.

  The display guide unit 43 displays a map around the vehicle position or a map displayed in a wide area on the display unit 10 based on the calculated vehicle position, route, and road map data in a three-dimensional display or other manner. It is. Further, the guidance guidance is controlled by determining elements to be displayed and flashing emphasis in the route, or using combined speech.

  The destination approach determination unit 44 is means for monitoring whether or not the distance to the destination has reached within a predetermined distance. In addition, the set distance may be a distance on the route to the destination, or a linear distance to the destination. In this embodiment, this distance is 1 km, but this distance can also be set arbitrarily.

  The route trajectory storage control unit 45, when the destination approach determination unit 44 determines that it is within a predetermined distance from the destination, the trajectory of the remaining route to the destination, that is, the destination to which the host vehicle follows. It is a means for recording the path trajectory as a data string. The information including the trajectory data string up to this destination is hereinafter referred to as trajectory information.

  The stop detection unit 46 is means for monitoring and detecting whether or not the vehicle is stopped, that is, whether or not the vehicle is parked in the parking lot. Here, the stop detection unit 46 detects the parking state of the vehicle in response to the vehicle accessory power being cut off or the engine stop so as not to detect a simple stop such as a temporary stop during traveling. It has become.

  Further, the entrance / exit coordinate specifying unit 47 is means for reading out the trajectory information recorded by the route trajectory storage control unit 45 from the memory M and specifying the entrance / exit coordinates of the parking lot at the destination facility. The entry / exit coordinates are specified on the road while checking whether the last registered locus, i.e., the locus coordinate closest to the stop position, is on the road from the locus data string included in the locus information. This is performed by selecting a coordinate closest to the stop position among the existing coordinates. The communication control unit 48 is means for requesting and receiving data from the server S, and controlling processing for transmitting from the terminal N the entrance / exit coordinates specified as described above, for example.

  The second coordinate presence / absence determination unit 49 confirms whether or not the second coordinate information that is the entrance / exit coordinates of the destination facility sent from the server S has been sent, and if there is a second coordinate, It is means for notifying the user of the fact that there is a parking lot at the destination and recalculating the parking lot to the destination through the display unit 10 or the like from the display guide unit 44 at the same time that the route setting unit is notified.

  Here, the second coordinate is a high-frequency coordinate specified on the terminal N side as an entrance / exit point in the facility, which is selected in the server S based on the facility information received from the terminal N and the entrance / exit information in the facility. This is a coordinate that constitutes facility information other than the facility-specific coordinates, and is thus defined. In the following description, those having a lower frequency of identification than the second coordinates are defined as third and fourth coordinates in order.

[1-2. Navigation Server Configuration]
In order to guide the user to the parking lot at the destination without searching for the parking lot, the present invention sucks the destination facility information and the specified entrance / exit coordinates from the user to the server, and uses the information to obtain the entrance / exit information. Are stored in the database and provided according to the user's request. This server includes the following means for selecting and storing the parking lot entrance / exit information.

  That is, as shown in the block diagram of FIG. 1, the server S stores information in the data transmitting / receiving unit 21, the data processing unit 22, the data management unit 23, the memory 24, the search database 25, and the map database 26. Means.

  The data transmission / reception unit 21 is means for receiving information sent from the terminal N and delivering it to the data processing unit 22. The data processing unit 22 is means for controlling processing of an entrance / exit determination unit 23 and a data management unit 23 described later.

  The data management unit 23 searches the search database 26 for a facility that matches the destination facility information sent from the terminal and the entrance / exit coordinates of the facility, and the entrance / exit coordinates and the information already registered in the search database 26. It is a means for comparing the entrance / exit coordinates in the facility, that is, the second coordinate to the fourth coordinate, and determining which one corresponds.

[2. Action]
Next, with respect to the operation of the terminal N, the server S, and the navigation system, referring to the flowcharts of FIGS. 2 to 7, the track information recording process at the terminal N and the parking lot entrance / exit information storage process at the destination facility at the server S The processing used by the parking lot entrance / exit information at the terminal N will be described.

[2-1. Identification processing of entrance / exit coordinates in navigation terminal]
The process of specifying the entrance / exit coordinates on the terminal N side will be described with reference to FIG.
First, in the destination reception unit 40, a facility that is a destination is set based on an operation of the input unit 11 by the user (S201). Specifically, a desired facility is selected by calling from the facility search list stored in the disk control unit 12 or the map database 26 of the server S. In response to this, the destination receiving unit 40 sets the facility selected by the user as the destination.

  When the destination is set, the route setting unit 41 calculates the route from the vehicle position calculated by the current position calculating unit 42 to the destination set by the destination receiving unit 40, and sets the optimum route. (S202). Based on the optimum route to the destination set in this way, the display guide unit 43 performs route guidance by displaying a route on the display unit 10, voice guidance, or the like (S203). Up to this point, it is the same as a normal navigation terminal.

  Next, during route guidance, the destination approach determination unit 44 monitors whether or not the distance to the destination has reached within a predetermined distance (here, 1 km) (S204). The distance may be a distance on the route to the destination, or a linear distance to the destination. In this embodiment, this distance is 1 km, but this distance can also be set arbitrarily.

  The destination approach determination unit 44 is in charge of monitoring until the distance to the destination is within 1 km (“NO” in S204), and when it is determined that the distance is within 1 km (“YES” in S204). The route trajectory storage control unit 45 is notified of this. Based on this, the path trajectory storage control unit 45 detects the parking of the vehicle by the vehicle stop detection unit 46 based on the trajectory of the remaining path to the destination, that is, the trajectory of the path to the destination followed by the own vehicle. Up to the memory M (S205). Here, as shown in FIG. 3, this trajectory is obtained by recording the coordinate data on the route N times from the stage of reaching the predetermined distance to the coordinate data N closest to the stop position, for example, at intervals of 5 m. is there.

    Each time the processes from S805 to S808 are performed, the stop detection unit 46 monitors and detects whether or not the vehicle is stopped, that is, whether the vehicle is parked in the parking lot (S206). Here, the stop detection unit 46 detects the parking state of the vehicle in response to the vehicle accessory power being cut off or the engine stop so as not to detect a simple stop such as a temporary stop during traveling. The stop detection unit 46 continues monitoring until the parking of the vehicle is detected (“NO” in S206).

  When parking of the vehicle is detected (“YES” in S206), the entrance / exit specifying unit 47 performs the entrance / exit coordinate specifying process shown in S207 to S211. FIG. 3 is used in addition to the flowchart of FIG. I will explain.

  That is, the entrance / exit specifying unit 47 reads the last registered trajectory, that is, the coordinate data N closest to the stop position in the route trajectory data sequence recorded in the memory M (S207).

  Next, the peripheral map related to the read coordinate N is called (S208), and whether the coordinate is on the road of the map data is determined by the server S via the map database stored in the disk control unit 12 or the communication control unit 48. This is confirmed by referring to the map database 26 stored in (S209). If it is on the road (YES), the coordinates are specified as the entrance / exit coordinates and recorded again in the memory M (S211). If not on the road (NO), the previous data N-1 in the trajectory data is read (S210), and the process returns to S208. Then, the above processing is repeated until the point where the locus coordinates exist on the road, the entry / exit coordinates are specified, and if it can be specified, it is recorded in the memory M (S211).

  When the entrance / exit coordinates at the destination facility (hereinafter referred to as entrance / exit coordinates NC) are specified in this way, the route trajectory storage control unit 45 notifies the communication control unit 47 to that effect, and the communication control unit 47 The destination facility information including the destination facility name and coordinate data stored in the memory M and the entrance / exit coordinates NC are transmitted to the server S (S211), and the terminal N ends the processing (END).

[2-2. Processing of entry / exit coordinate data in the navigation server]
Next, the destination facility information and the entrance / exit coordinate NC accumulation process sent to the server S side as described above will be described.

[2-2-1. Overview of processing]
The outline of the processing will be described with reference to the flowchart of FIG. First, the data transmitting / receiving unit 21 receives the destination facility information and the entrance / exit coordinates NC sent from the terminal N as described above (S401). Based on this, the data processing unit 22 records these data in the memory 24 (S402) and notifies the data management unit 23 that a new entrance / exit coordinate NC has been transmitted.

  Based on this, the data management unit 23 searches the search database 25 for a facility that matches the facility information recorded in the memory 24, and the entrance / exit coordinates of the facility already registered in the search database 25, that is, the second A fourth coordinate is extracted from the coordinates (S403). It is compared whether the entrance / exit coordinate NC transmitted from the terminal N matches the second coordinate to the fourth coordinate, and determines which of the second to fourth coordinates the entrance / exit coordinate NC corresponds to (S404). In addition, the frequency from the second coordinate to the fourth coordinate is compared, the order of the second to fourth coordinates is added again in the descending order of frequency, and rearranged in the descending order of frequency (S405). Accumulate.

  When the second coordinate transfer request is received from the terminal N, the data processing unit 22 causes the data management unit 23 to search for the corresponding facility, and when the second coordinate exists, the coordinate information is transmitted / received as data. A process of transferring to the terminal N through the unit 21 is also performed.

[2-2-2. Second coordinate selection process]
Next, the entry / exit coordinate selection processing in the data management unit 23 shown as S404 will be specifically described with reference to the flowchart of FIG.

  Based on the notification that the new entrance / exit coordinates have been specified from the data processing unit 22, the data management unit 23 matches the facility information recorded in the memory 24, that is, the facility information sent from the terminal N. Is searched from the search database 25 (S501). Next, it is confirmed whether or not the second coordinate, that is, the coordinate of the entrance point of the parking lot in the facility is recorded as data in the retrieved information of the relevant facility (S502). If the second coordinate does not exist (NO) ), The second coordinate frequency counter is incremented by 1 and the entrance / exit coordinates are set in the second coordinate storage location of the search database 26 (S503). If the second coordinates exist (YES), the distance between the entrance / exit coordinates and the second coordinates is calculated, and it is confirmed whether the distance is within 5 m (S504).

  If the distance between the entrance / exit coordinates and the second coordinate is within 5 m (YES), this difference is regarded as an error, and the second coordinate frequency counter is incremented by 1 (S505), and the process proceeds to S515. If it is 5 m or more away (NO), it is confirmed whether or not there is a third coordinate from the referenced facility (S506).

  If there is no third coordinate from the referenced facility (NO), the third coordinate frequency counter is incremented by 1 and the entrance / exit coordinate is set as the third coordinate storage location (S507). If there is a third coordinate (YES), the distance between the entrance / exit coordinates and the third coordinate is calculated, and it is confirmed whether the distance is within 5 m (S508). If the distance between the coordinates of the entrance / exit coordinates and the third coordinates is within 5 m (“YES” in S508), the third coordinate frequency counter is incremented by 1 (S509), and the process proceeds to S515.

  On the other hand, if it is 5 m or more away (“NO” in S508), it is confirmed whether there is a fourth coordinate (S510). If there is no fourth coordinate from the referenced facility (NO), the fourth coordinate frequency counter is incremented by 1 and the entrance / exit coordinate is set as the fourth coordinate storage location (S511). On the other hand, if there is a fourth coordinate (YES), the distance between the entrance / exit coordinates and the fourth coordinate is calculated, and it is confirmed whether the distance is within 5 m (S512). Further, if the distance between the entrance / exit coordinates and the fourth coordinate is within 5 m, the fourth coordinate frequency counter is incremented by 1 (S513), and the process proceeds to S515. On the other hand, if the distance is 5 m or more, the fourth coordinate frequency counter is cleared and the entrance / exit coordinates are set as the fourth coordinates (514).

  Then, in S512, the values of the second to fourth coordinate frequency counters are compared, and rearranged as the second, third, and fourth coordinates in descending order of frequency (S512). Thus, the entrance / exit coordinate data in the search database 26 is accumulated (END).

[2-2-3. Processing to transmit the second coordinate to the terminal]
Next, a process of transmitting the second coordinates of the entrance / exit coordinate data determined as described above to the terminal N will be described with reference to FIG.

  As shown in FIG. 6, the data transmission / reception unit 21 receives a transfer request of the name and telephone number information of the corresponding facility and the second coordinates from the terminal N (S601). The data processing unit 22 causes the data management unit 23 to search for the corresponding facility from the search database 25 based on the information received (S602), and confirms the presence or absence of the second coordinate (S603). If the second coordinate exists in the data of the relevant facility (YES), the data management unit 23 reads the second coordinate from the search database 25 and notifies the data processing unit 22 of the second coordinate. The data processing unit 22 transmits the fact that there is the second coordinate to the terminal N and the second coordinate data via the data transmitting / receiving unit 21 (S604). If the second coordinate does not exist (“NO” in S603), the terminal N is transmitted to the effect that there is no second coordinate (S605).

[2-3. Route setting process in navigation terminal]
Next, processing in the case where guidance is provided by using the second coordinates relating to the entrance / exit coordinates of the parking lot generated as described above using the navigation terminal N will be described with reference to the flowchart of FIG. In this process, it is assumed that the coordinates of the facility are recorded as search data of the navigation terminal N in association with the name of the facility.

  The user sets a destination facility by operating the input unit 11 (S701). Specifically, a desired facility is selected from the facility search list stored in the disk control unit 12. In response to this, the destination receiving unit 40 sets the facility selected by the user as the destination.

  When the destination is set, the route setting unit 41 calculates the route from the vehicle position calculated by the current position calculating unit 42 to the destination set by the destination receiving unit 40, and sets the optimum route. (S702). Up to this point, it is the same as the above-mentioned “recording of trajectory information on the terminal side”, and is also the same for a normal navigation terminal.

  Next, the communication control unit 49 transmits facility information including the facility name of the destination set in the destination receiving unit 40, the coordinates of the facility, and the like to the server S side (S703).

  In the server S, the facility information received from the terminal N is received by the data transmission / reception unit 21 (S704), and the data management unit 23 searches the search database 25 according to the instruction of the data processing unit 22. It is searched whether or not the second coordinate of the facility at S is registered on the server S side (S705), and the presence or absence is transmitted to the terminal N side (S706).

  In the terminal N, the second coordinate presence / absence determining unit 48 confirms whether or not the second coordinate information has been sent (S707). If there is a second coordinate (“YES” in S707), the display guide unit 44 From the display unit 10 or the like, the user is notified that there is a parking lot (second coordinate) at the destination and that the parking lot is recalculated to the destination (S708). Then, route calculation is performed again using the second coordinates as the destination (S709), and route guidance is started based on the result (S710). On the other hand, when there is no second coordinate (“NO” in S707), the process proceeds to S710 and performs route guidance according to the route set in S702 (S710).

[3. effect]
According to the present embodiment as described above, the terminal N records the travel route data within a certain distance to the destination, specifies the vehicle entrance / exit coordinates at the destination and the destination, and determines the entrance / exit coordinates and the destination coordinate. By transmitting the destination information including the name and the like to the server S, the server S can associate the specified entrance / exit coordinates with the destination and record the second coordinates in addition to the destination coordinates. it can.

  Therefore, after the user reaches the destination facility or the like, guidance guidance to the parking lot entrance / exit can be accurately performed without bothering to search for the entrance / exit of the parking lot in the facility. Further, the trajectory information is sucked up from the terminal N to the server S, and the entrance / exit information of the parking lot at the destination can be specified and accumulated from the information.

  In addition, since the second coordinates, which are the entrance / exit information of the parking lot at the destination, can be provided according to the request of the terminal N, the terminal N side can acquire the second coordinates from the server S only when necessary. In addition, it is possible to acquire the latest information that is sequentially updated with the trajectory information from other vehicles.

  The terminal N is provided with the path of the route before the stop, and the trajectory information is traced back to the coordinates on the road based on the last recorded coordinates, so that the coordinates where the vehicle entered the facility can be accurately determined. Thus, it is possible to determine the entrance / exit coordinates with higher accuracy.

  By counting the recording frequency of the second coordinates specified based on the trajectory information provided from the terminal N, if the entrance / exit coordinates are provided from the terminal N with high frequency, the more reliable the coordinates are. This process makes it possible to store and provide the entrance / exit coordinates with higher accuracy.

  When there are multiple entrances / exits at the destination parking lot, record this as a second, third or fourth coordinate, count each recording frequency, record in order from the highest frequency, By providing, it is possible to accumulate and provide entrance / exit coordinates that are statistically most accessible to the vehicle and highly accurate as information.

(2) Second Embodiment The second embodiment is obtained by improving the entry / exit coordinates specifying process of the navigation terminal in the first embodiment. This process will be described with reference to the flowchart of FIG. Since other processes are all the same as those in the first embodiment, description thereof will be omitted.

  As shown in FIG. 8, in the process of specifying the entrance / exit coordinates in the terminal N of the present embodiment, first, the destination receiving unit 40 sets a facility as a destination based on an operation of the input unit 11 by the user (S801). ). Specifically, a desired facility is selected by calling from the facility search list stored in the disk control unit 12 or the map database 26 of the server S. In response to this, the destination receiving unit 40 sets the facility selected by the user as the destination.

  When the destination is set, the route setting unit 41 calculates the route from the vehicle position calculated by the current position calculating unit 42 to the destination set by the destination receiving unit 40, and sets the optimum route. (S802). Based on the optimum route to the destination set in this way, the display guide unit 43 performs route guidance by displaying a route on the display unit 10, voice guidance, or the like (S803).

  Next, during route guidance, the destination approach determination unit 44 monitors whether or not the distance to the destination has reached within a predetermined distance (here, 1 km) (S804). The distance may be a distance on the route to the destination, or a linear distance to the destination. In this embodiment, this distance is 1 km, but this distance can also be set arbitrarily.

  If the destination approach determination unit 44 determines that the monitoring is pending until the distance to the destination is within 1 km (“NO” in S804) and has reached within 1 km (“YES” in S804). The route trajectory storage control unit 45 is notified of this. Note that the processing up to this point is the same as the processing for specifying the entrance / exit coordinates of the navigation terminal in the first embodiment.

  Next, the route trajectory storage control unit 45 sequentially records the remaining route trajectory to the destination, that is, the coordinate data of the route to the destination followed by the own vehicle in the memory M sequentially at intervals of 5 m, for example. (S805). This recording is performed until vehicle parking is detected by the vehicle stop detection unit 46. In addition, it is confirmed by referring to the map database stored in the server S via the map database stored in the disk control unit 12 or the communication control unit 48 whether or not the coordinates in the locus to be recorded are on the road. (S806).

  When the coordinates to be recorded are on the road (“YES” in S806), the flag on the road at the coordinates is turned on (S807), and when the coordinates are not on the road (“NO” in S806), The road flag for coordinates is turned off (S808).

  As shown in FIG. 9, the trajectory recorded in this way is composed of coordinates and a flag state indicating whether or not the coordinates are on the road. That is, the route trajectory storage control unit 45 records the coordinates on the route n times from the stage of reaching the predetermined distance to the coordinate “N” closest to the stop position, and the flag state on the road at the coordinates. Check.

  Each time the processes from S805 to S808 are performed, the stop detection unit 46 monitors and detects whether or not the vehicle is stopped, that is, whether the vehicle is parked in the parking lot (S809). Here, the stop detection unit 46 detects the parking state of the vehicle in response to the vehicle accessory power being cut off or the engine stop so as not to detect a simple stop such as a temporary stop during traveling. The stop detection unit 46 continues monitoring until the parking of the vehicle is detected (“NO” in S809).

  When parking of the vehicle is detected (“YES” in S809), the recorded coordinate data is read from the new one, that is, the coordinate N in FIG. It is confirmed whether or not the upper flag is on (S811). In the example of FIG. 9, since the flag is turned on at the coordinate “N-4”, the processes of S810 and S811 are started from the coordinate “N”, and “N−1”, “N-2”, “ After repeating N-3 ”four times, the state where the on-road flag is on can be confirmed in the fifth process.

  When the coordinates “N-4” where the flag state on the road is on is confirmed in this way, this is regarded as the entrance / exit of the parking lot in the facility, and the coordinates “N-4” is specified as the entrance / exit coordinates ( S813).

  Thus, when the entrance / exit coordinates in the destination facility are specified, the entrance / exit coordinates are stored in the disk control unit 12 in association with the map data. Further, the route trajectory storage control unit 45 notifies the communication control unit 47 that the entrance / exit coordinates have been specified, and includes the destination facility name and coordinate data stored in the memory M from the communication control unit 47. The facility information and the entrance / exit coordinates are transmitted to the server S (S813), and the terminal N ends the process (END).

  In the second embodiment as described above, in the entry / exit coordinates specifying process, the route trajectory storage control unit simultaneously records the coordinate data of the route trajectory within a predetermined distance to the destination, and the coordinate data is the road. Since it is also determined whether or not the vehicle is on, as a process after the vehicle stops, it is possible to speed up the process without checking whether the coordinates are on the road with reference to the map data step by step. become able to.

(3) Other Embodiments The present invention is not limited to the above-described embodiments, and includes other embodiments exemplified below. For example, the entrance / exit coordinates are not limited to the entrance / exit of the parking lot at the destination facility, but include all entrances / exits of the facility.

  Further, in the first and second embodiments, after detecting that the vehicle is parked in the parking lot of the destination facility through the entry / exit coordinates specifying process (S207 to S211 in FIG. 2 and S810 to 812 in FIG. 8), However, the present invention is not limited to such a case. For example, after the parking is detected by the stop detection unit 46 (S206 in FIG. 2, 207 in FIG. 8), the process is temporarily stopped. Then, when the vehicle accessory power supply or engine is started again, as shown in FIGS. 10A and 10B, the entry / exit coordinates corresponding to S207 to S211 in FIG. 2 and S810 to 812 in FIG. 8 are specified. Processing may be performed.

  That is, in the case of the first embodiment, when the accessory power source or the engine of the vehicle is started again, first, the entrance / exit specifying unit 47 first stores the route recorded in the memory M as shown in FIG. Of the trajectory data string, the trajectory registered last, that is, the coordinate data N (see FIG. 3) closest to the stop position is read (S1001).

  Next, the peripheral map related to the read coordinate N is called (S1002), and whether the coordinate is on the road of the map data is determined by the server S via the map database stored in the disk control unit 12 or the communication control unit 48. This is confirmed by referring to the map database 26 stored in (S1003). If it is on the road (YES), the coordinates are specified as the entrance / exit coordinates and recorded again in the memory M (S1005). If it is not on the road (NO), the previous data N-1 in the trajectory data is read (S1004), and the process returns to S1002. Then, the above process is repeated until the point where the locus coordinates exist on the road, the entry / exit coordinates are specified, and if it can be specified, it is recorded in the memory M (S1005).

  When the entrance / exit coordinates at the destination facility are specified in this way, the route trajectory storage control unit 45 notifies the communication control unit 47 to that effect, and the destination stored in the memory M from the communication control unit 47. Destination facility information including the facility name and coordinate data and the entrance / exit coordinates NC are transmitted to the server S (S1006), and the terminal N ends the processing (END).

  In the case of the second embodiment, when the accessory power source or engine of the vehicle is started again, as shown in FIG. That is, reading is performed from the coordinate N in FIG. 9 (S1011), and it is confirmed whether or not the road flag of the read coordinate is on (S1012). In the example of FIG. 9, since the flag is turned on at the coordinate “N-4”, the processes of S810 and S811 are started from the coordinate “N”, and “N−1”, “N-2”, “ After repeating N-3 ”four times, the state where the on-road flag is on can be confirmed in the fifth process.

  When the coordinates “N-4” where the flag state on the road is on is confirmed in this way, this is regarded as the entrance / exit of the parking lot in the facility, and the coordinates “N-4” is specified as the entrance / exit coordinates ( S1013).

  Thus, when the entrance / exit coordinates in the destination facility are specified, the entrance / exit coordinates are stored in the disk control unit 12 in association with the map data. Further, the route trajectory storage control unit 45 notifies the communication control unit 47 that the entrance / exit coordinates have been specified, and includes the destination facility name and coordinate data stored in the memory M from the communication control unit 47. The facility information and the entrance / exit coordinates are transmitted to the server S (S1014), and the terminal N ends the process (END).

The functional block diagram which shows the structure of the 1st Embodiment of this invention. The flowchart which shows the specific process of the entrance / exit coordinate data in the terminal of the 1st Embodiment of this invention. The figure which shows the path | route locus | trajectory information in the terminal in the 1st Embodiment of this invention. The flowchart which shows the outline | summary of the accumulation | storage process of the destination facility information and route locus | trajectory information in the server in the 1st Embodiment of this invention. The flowchart which shows the selection process of the entrance / exit coordinate in the server in the 1st Embodiment of this invention. The flowchart which shows the process which transmits the 2nd coordinate in the terminal side in the 1st Embodiment of this invention to the terminal side. The flowchart which shows the guidance guidance using the 2nd coordinate in the terminal in the 1st Embodiment of this invention. The flowchart which shows the specific process of the entrance / exit coordinate data in the terminal of the 2nd Embodiment of this invention. The figure which shows the path | route locus | trajectory information in the terminal in the 2nd Embodiment of this invention. The flowchart which shows the other specific process of the entrance / exit coordinate data in the terminal of other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Absolute position and direction detection part 2 ... Relative direction detection part 3 ... Vehicle speed detection part 4 ... Processing part (Main CPU and its peripheral circuit)
5 ... ROM
6. Dynamic RAM (DRAM)
7. Static RAM (SRAM)
8 ... Video RAM (VRAM)
DESCRIPTION OF SYMBOLS 9 ... User interface part 10 ... Display part 11 ... Input part 12 ... Disk control part 13 ... Communication apparatus and processing part 21 ... Data transmission / reception part 22 ... Data processing part 23 ... Data management part 24 ... Memory 25 ... Search database 26 ... Map Database 40 ... Destination receiving unit 41 ... Route setting unit 42 ... Current position calculating unit 43 ... Display guide unit 44 ... Destination approach determining unit 45 ... Route trajectory storage control unit 46 ... Stop detecting unit 47 ... Entrance / exit coordinate specifying unit 48 ... Communication control unit 49 ... Coordinate presence / absence determination unit M ... Memory N ... Terminal NS ... Entrance / exit coordinates S ... Server

Claims (26)

In a navigation server that provides information to the terminal by transmitting and receiving data to and from the terminal by connecting via a telecommunication line with the navigation terminal,
The destination specified by the destination information including the name of the destination, etc. transmitted from the terminal and the trajectory information including the position coordinates on the map within the fixed distance to the destination. Means for receiving the entrance and exit coordinates of the ground;
A navigation server comprising: coordinate recording means for associating the entrance / exit coordinates with the destination and recording as second coordinates in addition to the coordinates of the destination.   The navigation server according to claim 1, further comprising means for transmitting the second coordinates to the terminal in response to a request from the terminal.   The coordinate recording means counts the recording frequency of the second coordinate when the second coordinate is already registered when the entrance / exit coordinates are recorded as the second coordinate. The navigation server according to claim 1 or 2.   In the case of recording the entrance / exit coordinates as the second coordinates, when the second coordinates are already registered, the coordinate recording means calculates the entrance / exit coordinates and the already recorded second coordinates. In comparison, when the distance between the coordinates is within a certain distance, the entry / exit coordinates are recorded as a second coordinate, and when the distance between the coordinates is not within the certain distance, the entry / exit coordinates are recorded as another third coordinate. The navigation server according to any one of claims 1 to 3, wherein the navigation server is recorded as coordinates.   5. The navigation server according to claim 4, wherein the second and third coordinates are recorded in descending order of frequency while counting the frequency specified as the entrance / exit coordinates. In a navigation terminal for guiding a route from a departure place to a destination while transmitting and receiving data by connecting to the navigation server according to any one of claims 1 to 5 via a telecommunication line,
Trajectory recording means for sequentially recording travel route data within a certain distance to the destination as trajectory information;
Doorway specifying means for specifying the coordinates of the doorway of the destination from the trajectory information;
A navigation terminal comprising: means for transmitting the gateway information and destination information including a destination name and the like to the server.   The entry / exit specifying means compares the position coordinates in the trajectory information with the map data of the destination sequentially from the last recorded coordinates, and when the coordinates are on a road, the coordinates are used as the entry / exit coordinates. The navigation terminal according to claim 6, wherein the navigation terminal is specified.   The navigation terminal according to claim 6, wherein the trajectory recording means sequentially determines and records whether the position coordinates are on a road as the trajectory information.   A navigation system comprising the navigation server according to any one of claims 1 to 5 and the navigation terminal according to any one of claims 6 to 8. In a control method of a navigation server that provides information to the terminal by connecting to the navigation terminal via an electric communication line and transmitting / receiving data to / from the terminal.
The navigation server is controlled by the control unit.
The destination specified by the destination information including the name of the destination, etc. transmitted from the terminal and the trajectory information including the position coordinates on the map within the fixed distance to the destination. Processing for receiving the entrance / exit coordinates of the ground,
A navigation server control method, comprising: performing coordinate recording processing in which the entrance / exit coordinates are associated with the destination and recorded as second coordinates in addition to the coordinates of the destination.   The method of controlling a navigation server according to claim 10, further comprising a process of transmitting the second coordinates to the terminal in response to a request from the terminal.   In the coordinate recording process, when the entrance / exit coordinates are recorded as the second coordinates, if the second coordinates are already registered, the recording frequency of the second coordinates is counted. The navigation server control method according to claim 10 or 11.   In the coordinate recording process, when the entrance / exit coordinates are recorded as the second coordinates, if the second coordinates are already registered, the entrance / exit coordinates and the already recorded second coordinates are In comparison, when the distance between the coordinates is within a certain distance, the entry / exit coordinates are recorded as a second coordinate, and when the distance between the coordinates is not within the certain distance, the entry / exit coordinates are recorded as another third coordinate. The navigation server control method according to any one of claims 10 to 12, wherein the navigation server is recorded as coordinates.   14. The navigation server control method according to claim 13, wherein the second and third coordinates are recorded in descending order of frequency while the frequencies specified as the entrance / exit coordinates are counted. A navigation method for guiding a route from a departure place to a destination while connecting to the navigation server according to any one of claims 10 to 14 via a telecommunication line and transmitting and receiving data.
By the control unit
Trajectory recording processing for sequentially recording travel route data within a certain distance to the destination as trajectory information;
An entrance / exit specifying process for specifying coordinates of the entrance / exit of the destination from the trajectory information;
And a process of transmitting destination information including destination coordinates and destination name information to the server.   The entry / exit specifying process compares the position coordinates in the trajectory information with the map data of the destination sequentially from the last recorded coordinates, and when the coordinates are on a road, the coordinates are used as the entry / exit coordinates. The navigation method according to claim 15, wherein the navigation method is specified.   16. The navigation method according to claim 15, wherein the trajectory recording process sequentially records whether or not the position coordinates are on a road as the trajectory information.   A navigation system control method, comprising: executing the navigation server control method according to any one of claims 10 to 14; and the navigation method according to any one of claims 15 to 17. In a control program for a navigation server that provides information to the terminal by a control unit by transmitting and receiving data to and from the terminal by connecting to a navigation terminal via an electric communication line,
By the control unit,
The destination specified by the destination information including the name of the destination, etc. transmitted from the terminal and the trajectory information including the position coordinates on the map within the fixed distance to the destination. To receive the doorway coordinates of the ground,
A control program for a navigation server, wherein the entrance / exit coordinates are recorded as second coordinates in addition to the coordinates of the destination in association with the destination.   20. The navigation server control program according to claim 19, wherein the second coordinate is transmitted to the terminal in response to a request from the terminal.   In the method of recording the coordinates, when the entrance / exit coordinates are recorded as the second coordinates, and the second coordinates are already registered, the recording frequency of the second coordinates is counted. The navigation server control program according to claim 19 or 20, wherein   In the method of recording the coordinates, when the gateway coordinates are recorded as the second coordinates, and the second coordinates are already registered, the gateway coordinates and the second coordinates already recorded are recorded. When the distance between the coordinates is within a certain distance, the entry / exit coordinates are recorded as a second coordinate, and when the distance between the coordinates is not within the certain distance, the entry / exit coordinates are The navigation server control program according to any one of claims 19 to 21, wherein the program is recorded as three coordinates.   23. The control program for a navigation server according to claim 22, wherein the second and third coordinates are recorded in descending order of frequency while the frequencies specified as the entrance / exit coordinates are counted. A navigation program for guiding a route from a departure point to a destination by a control unit while connecting to the navigation server according to any one of claims 19 to 23 and transmitting and receiving data.
By the control unit,
The travel route data within a certain distance to the destination is sequentially recorded as trajectory information,
The gateway coordinates of the destination are specified from the trajectory information,
A navigation program that causes the server to transmit the entrance / exit coordinates and destination information including a destination name and the like.   The method for specifying the entrance / exit is compared with the map data of the destination sequentially from the last recorded coordinates among the position coordinates in the trajectory information, and when the coordinates are on the road, the coordinates are used as the entrance / exit The navigation program according to claim 24, wherein the navigation program is specified as coordinates.   25. The navigation program according to claim 24, wherein the method of recording the trajectory sequentially records whether or not the position coordinates are on a road as the trajectory information.

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