JP2001194163A - Navigation device and method for renewing map - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device for automatically detecting a road not existing in map data, renewing the data at the necessary timing, and providing it to the user as common map data. SOLUTION: This navigation device includes: map data 111 storing map information including roads; a communication means 110 for communicating with a host computer 2; an unregistered road detecting means 105 for matching the map information with the current position and detecting the position of the road not included in the map information; an unregistered road accumulation means 106 for accumulating the detected position of the road as unregistered road data; an unregistered road data management means 107 for checking the accumulated unregistered road data against determination parameter information and reporting any unregistered road to the host computer; and a map renewal means 109 for downloading either the map data having road data corresponding to the reported unregistered road or new map data for renewal at the host computer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device capable of updating a map and a method of updating a map on the navigation device, and more particularly to a map management method using a communicable computer system.

[0002]

2. Description of the Related Art In recent years, navigation systems, such as those for on-vehicle use, have been widely used, and various products having different functions, processing capabilities, data capacities and the like have appeared. In particular,
The car navigation system is installed in the vehicle, and provides information to the user from the map and other additional information held in the vehicle and the own vehicle position that can be grasped from the GPS information that is always received. I have. The basic usage mode is to provide information other than the vehicle position, such as the current position on the map, peripheral facility information, and the route and distance to the destination, by static information held in the vehicle.

[0003] On the other hand, roads and facilities are constantly changing, and in order to cope with this, many navigation systems have
By updating the map information, new road and facility information can be used, and the new map information is provided by updating the information on the storage medium.

[0004] In addition to such static information, it has become possible to acquire information that changes in real time. Some of them have a function corresponding to VICS or the like and can receive and use various dynamic information. More and more. By providing real-time information according to the position of the vehicle and the operation of the user, the user can obtain information that matches the road conditions that change every moment.

[0005] Providing information corresponding to a changing traffic environment not only makes it easier to grasp the current position and guide the route, but also leads to an improvement in convenience for the user. As shown, a method for acquiring such information via communication means has been proposed.

[0006] Japanese Patent No. 2901544 "Car Navigation Apparatus" (hereinafter referred to as Document 1) discloses a method of providing the current road conditions and the latest additional information on-line by a car navigation apparatus. This is downloaded when the additional information in the designated section on the map does not exist in the file held or when it is old. This makes it possible to utilize the latest information on information such as sightseeing guidance added to the map data and the current road conditions such as traffic closures and traffic jams.

Japanese Patent Publication No. Hei 7-117420, entitled "Method of Generating Road Data in In-Vehicle Navigation Device" (hereinafter referred to as Reference 2) discloses a method of generating road data in an in-vehicle navigation device. This is to generate and display road data from the relationship between the current position of the vehicle and a recent road on the map data. Thus, when traveling on a new road, that road can be displayed.

[0008]

However, since the information on the shape of the road is the basis of the map information, the latest information is always required. The map data itself must be updated. In many cases, a method of purchasing a storage medium in which the latest map data is stored is used, and there has been a problem that it becomes uneconomical. Further, after the update, there is a problem that the storage medium containing the map of the old version becomes unnecessary and resources are wasted.

According to the method described in the above document 2, there is an advantage that a new road can be found and displayed without purchasing a new storage medium, but local data is stored. Therefore, it is not possible to verify the road created as a new road and it is not possible to share the data, so that different road data will be retained for each user, and the collected information will be used effectively. There was a problem that can not be.

On the other hand, when the latest information is provided from the host computer to the navigation device as described in Document 1, it is not known whether the obtained information matches the reality or not. If the information of the computer is not updated, it may not match the reality. Since facility and store information does not change in real time, it is difficult to collect information, add information and change information, and it often takes time before the information is reflected as usable information. was there.

Further, since the shape of the road is not information updated in real time, it is difficult to update the held map information. In addition, existing roads that are not described in the map data due to their narrow width etc. may be frequently used roads, but such roads must be notified by the user There was a problem that it was difficult to reflect on map data.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is possible to automatically detect a road that does not exist in map data, accumulate the road information, and use it for updating the map data. Another object of the present invention is to provide a car navigation device and a map updating method capable of updating the latest map data at a required timing and providing the same to users as shared map data.

[0013]

According to the present invention, there is provided a navigation apparatus comprising: map data for storing map information including a road; current position detecting means for detecting a current position; and output means for displaying the map and the current position. Communication means for communicating with a host computer, unpublished road detecting means for detecting the position or route of a road not included in the map information by matching the map information with the current position, and unpublished road detecting means. Unpublished road storage means for storing the detected road position or route as unpublished road data, and whether the unpublished road data stored in the unpublished road storage means is an unpublished road in light of the determination parameter information. Unpublished road data management means for notifying the host computer of the existence of unpublished roads,
When the notification of the existence of the unpublished road is transmitted from the unpublished road data management means to the host computer, the host computer uses the map data in which the road data corresponding to the notified unpublished road is posted or newer than that. When there is map data, the map data is provided by downloading the map data and updating the map data. The map data is provided to the host computer as necessary. The configuration is such that map data information corresponding to the information is automatically downloaded.
With this configuration, a road that does not exist in the map data held by the navigation terminal is automatically detected and collected, so that new map data can be automatically downloaded.

In the navigation device according to the present invention, when the host computer receives a notification of the presence of an unpublished road from the unpublished road data management means, the host computer generates road data corresponding to the unpublished road for which the presence notification has been received. When there is no published map data, the information of the unpublished road for which the presence notification has been received is stored. With this configuration, the stored data can be used for creating a new map by providing it to the host computer.

The navigation device according to the present invention has a configuration in which the unpublished road data management means deletes the unpublished road data accumulated after transmitting a notification of the existence of an unpublished road to the host computer. are doing. With this configuration, the amount of data stored in the navigation terminal can be reduced, and double notification to the host computer can be prevented.

The navigation device according to the present invention has a configuration in which the determination parameter information is either the number of stored data or the number of continuous stored data, or an operation coefficient for a combination thereof, or setting information of a user to use. are doing. With this configuration, it is possible to collect data with high use accuracy or data excluding invalid information due to the user environment in use.

The navigation device according to the present invention has a configuration in which the determination parameter information includes unnecessary collection area information that is information on an area that is not a road or an area that cannot be posted as a road. With this configuration, it is possible to prevent collection of data other than roads and unnecessary data.

The navigation device according to the present invention has a configuration including parameter input means for changing and updating the judgment parameter information. With this configuration, the setting can be changed manually or appropriately via a communication path depending on the quality of information to be notified to the host computer, and appropriate data can be collected even when the usage environment of the navigation terminal changes.

[0019] The navigation device according to the present invention, when the unpublished road existence notification is transmitted from the unpublished road data management means to the host computer, the host computer changes the notified unpublished road to an area having no road. Compared with the outside road area information shown, when the notified unpublished road is determined to be the outside road area, the notified unpublished road is stored as collection unnecessary area information by the parameter input means. ing. With this configuration, it is possible to utilize the feedback to invalidated data once notified to the host computer.

The navigation device according to the present invention has a configuration in which the unpublished road data stored in the unpublished road storage unit that matches the collection unnecessary area information is deleted by the unpublished road data management unit. . With this configuration, invalid data accumulation can be prevented, so that new roads are automatically detected and information is collected, and only necessary map data can be accumulated and updated.

A map updating method according to the present invention communicates with a host computer, map data for storing map information including roads, current position detecting means for detecting a current position, output means for displaying a map and a current position. In a navigation device having communication means, a position or a route of a road not included in the map information is detected by matching the map information with a current position, and the detected road is stored as unpublished road data. Determine whether the stored unpublished road data is an unpublished road in light of the determination parameter information, notify the host computer of the presence of the unpublished road, and notify the host computer of the presence of the unpublished road to the host computer. At the time of notification, the host computer generates road data corresponding to the notified unpublished road. If there is map data on the map or newer than that, the process consists of downloading the map data and updating the map data. , The map data information corresponding to the unpublished road information is automatically downloaded. With this configuration, by automatically detecting a road that does not exist in the map data held by the navigation terminal, it is possible to automatically update the map by using the determination of the map update timing in the navigation terminal.

[0022] In the map updating method according to the present invention, the host computer receives the notification of the presence of the unpublished road, and the map data includes road data corresponding to the unpublished road for which the presence notification has been received. When there is no such information, the information of the unpublished road which has received the presence notification is stored. With this configuration, by providing the data accumulated by the navigation terminal to the host computer, data accumulation of a new road becomes possible, and the data can be used for creating a new map.

The map updating method according to the present invention has a configuration in which the unpublished road data accumulated after transmitting the presence notice of the unpublished road to the host computer is deleted. With this configuration, the amount of data held in the navigation terminal can be reduced, and excessive communication such as double notification to the host computer can be prevented.

[0024] The map updating method according to the present invention is configured such that the judgment parameter information is either the number of accumulated data or the number of consecutive accumulated data, or an operation coefficient for a combination thereof, or setting information of a user to be used. Have. With this configuration, it is possible to collect data with high use accuracy or to collect data excluding invalid information due to the user environment in use.

[0025] The map updating method according to the present invention has a configuration in which the determination parameter information includes unnecessary collection area information that is information of an area that is not a road or an area that cannot be posted as a road. With this configuration, it is possible to prevent data other than roads and unnecessary data collection.

The map updating method according to the present invention has a configuration in which the determination parameter information is changed and updated in response to a request from the host computer. With this configuration, when the information to be notified to the host computer is not appropriate, the setting of the determination parameter information of the navigation terminal can be appropriately changed.

[0027] In the map updating method according to the present invention, when an unpublished road presence notification is transmitted from the navigation terminal to the host computer, the host computer sends the notified unpublished road to an out-of-road area indicating an area with no road. In comparison with the information, when the notified unpublished road is determined to be an area outside the road, the notified unpublished road is stored as collection unnecessary area information. With this configuration, it is possible to utilize feedback on invalid data that has been notified once, and update information that is effective for data collection.

The map updating method according to the present invention has a configuration in which the stored unpublished road data is compared with the collection-unnecessary area information, and when they match, the stored unpublished road data is deleted. ing. With this configuration, invalid data accumulation can be prevented.

According to the present invention, it is possible to automatically detect a road that does not exist in the map data and use the information for updating the map data, and to update the latest map data at a necessary timing. Can be. Furthermore, by carefully selecting and collecting and notifying information, the map creation manager can recognize a new road at an early stage, and can use it for updating the map. As a result, it is possible to provide a car navigation device and a map updating method that reduce the user's labor and improve convenience.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. First, a configuration of a navigation device according to an embodiment of the present invention will be described with reference to FIG. The navigation device shown in FIG. 1 includes a navigation terminal 1 and a host computer 2, and the navigation terminal 1 can communicate with the host computer 2 via a communication network such as a public line.

The navigation terminal 1 includes an output unit 101 such as a display, an input unit 102 such as a virtual keyboard or a touch panel, a communication unit 110 for communicating with a host computer, a map data 111 storing a map and additional information. From unpublished road data 112 that stores road data that has not been published in map data, determination parameters 113 used to determine unpublished road data, and a processing unit 103 that detects unpublished roads and updates map information. Be composed.

The processing unit 103 detects the current position of the vehicle using the GPS information or the like. The current position detecting means 104 detects roads not shown on the map using the current position and the road information of the map data. Unpublished road detecting means 105,
Unpublished road storage means 106 for storing the detected unpublished roads as unpublished road data;
Unpublished road data management means 107 for managing the judgment parameters, and parameter input means 108 for operating the judgment parameters 113
Map updating means 109 for updating the map data 111
And Processing unit 10 in navigation terminal 1
Reference numeral 3 denotes a block for performing processing necessary for the present invention. The navigation terminal 1 may include information providing means in a general navigation terminal such as route guidance and facility search.

On the other hand, the host computer 2 transmits data to the navigation terminal 1, a data output unit 121 such as a display, a data input unit 122 used for updating map data and the like, a communication unit 124 for communicating with the navigation terminal 1. Original map data 129 storing map data and unpublished road information 130 storing road information received from the navigation terminal 1
And out-of-road area information 131 storing areas other than roads
And a processing unit 123 for transmitting map data and storing information in response to a notification from the navigation terminal 1.

The processing section 123 includes a map data transmitting means 125 for transmitting data contained in the original map data 129 in response to a notification from the navigation terminal;
Map data management means 126 for managing map data;
An unpublished road information storage unit 127 that stores unpublished road information in the unpublished road information 130 in response to a notification from the navigation terminal 1, and an out-of-road area information management unit 128 that manages out-of-road area information 131.

The map data 111 and the original map data 129 may be maps used in a normal navigation device, but may be in a form in which the entire map information cannot be separated.
It may be a format that allows partial updating / addition of the map. The format of this map data determines the download range from the host computer when updating the map. That is, if separation is not possible, the entire map is updated; otherwise, only the target partial data is updated, and the update range is downloaded.

The unpublished road data 112 and the unpublished road information 130 are data indicating a road by a continuous set of points represented by coordinates such as latitude and longitude. If the road can be expressed as a road, other expression methods are used. But it is good. The out-of-road area information 131 may be data indicating a road similar to the unpublished road data, or may be expressed as an enclosed area.

Next, the operation of the navigation terminal of the navigation device according to one embodiment of the present invention will be described with reference to FIG. FIG. 2 is a flowchart showing the operation of the navigation terminal shown in FIG. First, the current position of the own vehicle is acquired by the current position detecting means 104 for recognizing the current position of the vehicle or the like using GPS information or the like (step 201) (hereinafter, referred to as S201). Next, based on the road information stored in the map data 111, the unpublished road detecting means 105 performs matching between the current position of the own vehicle and the surrounding road (S202), and the current position of the own vehicle is on the road. (S20)
3). Briefly, the current position of the own vehicle and the road information are overlapped to determine whether they overlap, but the current position of the own vehicle in the past several points is treated as a trajectory, and the trajectory and the road information are matched. Is also good. When it is determined that the current position of the own vehicle is on the road by the comparison determination (S203)
→ Yes) returns to the first step S201, and repeats from the acquisition of the current position of the own vehicle (S201).

The operation timing may coincide with the update of the current position of the vehicle, which is a function of a normal navigation device, may be started at an arbitrary interval, or the navigation terminal 1 may be used. It may be an instruction from the user. If it is determined that the current position of the vehicle is not on the road by the comparison determination (S203 → No), the unpublished road storage unit 106 stores the unpublished road data 1
12 to write the current position or locus of the vehicle (S20).
4).

Next, unpublished road data management means 107
Compares the road data stored in the unpublished road data 112 with the determination parameter 113 (S205), and determines whether or not to notify the host computer as an unpublished road (S206). In this determination, for example, whether the unpublished road is separated from the surrounding road, the same unpublished road data is accumulated many times, the same unpublished road data is accumulated within a few days, Any criterion such as whether the road is in the user's residence can be applied, and this criterion is set in advance.
Accordingly, a numerical value serving as a reference for determination, that is, a coefficient or a boundary value at the time of the determination operation is set in the determination parameter 113. The initial setting of the determination parameters and the setting of the information on the user can be performed via the parameter input unit 108. Further, the determination parameter 113 may include collection-unnecessary area information, and whether or not the information corresponds to this information is also a reference for determination. The collection-unnecessary area information indicates a place where it is known that the vehicle can be driven but is not a road, such as a large suburban store parking lot. Note that the determination parameter information may be, specifically, any one of the number of stored data, the number of continuous stored data, or an operation coefficient for a combination thereof, or setting information of a user to use.

When it is determined whether or not to notify the host computer 2 of the unpublished road (S206), it is determined that the host computer 2 is not notified (S206).
206 → No), if the unpublished road is an area included in the collection unnecessary area information (S214 → Yes), the data targeted for this unpublished road is deleted from the unpublished road data 112 (S215). After deleting the data in S215 and when the unpublished road is not a collection unnecessary area (S214 → No), the first step S20
It returns to 1 and repeats from acquisition of the current position of the own vehicle.

On the other hand, in S206, when the result of notifying the host computer 2 is obtained, that is, when it is determined that the unpublished road is not required to be collected (S2).
06 → Yes) notifies the host computer 2 of the existence of the unpublished road via the communication means 110 (S20).
7). The data to be notified is the road data and the version of the map that is held.The road data is the same as the format stored as unpublished road data, and the road is represented by a continuous set of points represented by coordinates such as latitude and longitude. Is the data indicating

If new map data exists in the host computer 2 with respect to the unpublished road data notified to the host computer 2 (S208 → Yes), the map updating means 109 downloads the map data (S20).
9) Update the held map data 111 (S2)
10). When the map data is updated, the notified unpublished road information becomes unnecessary or is deleted from the unpublished road data 113 in order to prevent re-notification using the same data (S211). Even if the data is not deleted, the used data may be marked so that the used data can be identified. Also, if there is no new map data in the host computer 2 in S208 (S208 → No), it is also used and deleted similarly.
11.

As a result of the search by the host computer 2, if the unpublished road notified to the host computer 2 does not need to be collected (S 212 → Yes), it is included in the determination parameter 113 via the parameter input means 108. The information is collected and updated in the unnecessary collection area information. After the collection unnecessary area information is updated in S213, and when the unpublished road notified to the host computer 2 is not collection unnecessary in S212 (S212
(No) returns to the first step S201 and repeats from the acquisition of the current position of the own vehicle.

Next, the operation of the host computer of the navigation device according to one embodiment of the present invention will be described with reference to FIG. FIG. 3 is a flowchart showing the operation of the host computer shown in FIG. First, when the communication unit 124 receives the notification from the navigation terminal 1 (S301), the outside road area information management unit 128 searches the notified road from the outside road area information 131 (S30).
2) If there is applicable information and it is determined that the road is an off-road area (S303 → Yes), the navigation terminal 1 is notified that the road is an off-road area (S3).
10).

If it is determined in step S303 that the road is not located outside the road, the map data management means 126 outputs the notified road from the original map data 129 that includes the latest map and is transmitted to each navigation terminal 1. (S304). In S305,
The map including the notified road is the original map data 12
9 is determined. If the map exists in the original map data 129 (S305 → Yes), the map data transmitting means 125 transmits the corresponding map in the original map data 129 to the navigation terminal 1 (S309).

On the other hand, if it is determined that the corresponding map does not exist as a result of the determination at S305 (S305 → No), it is determined that an unpublished road exists, and the unpublished road information storage unit 127 stores the unpublished road information 130 in the unpublished road information 130. It is stored (S306). In addition, the map data management means 126
The map that is newer than the map held by the navigation terminal 1 that is the source of the notification received in 301 (sent the notification to the host) is the original map data 129.
(S307), and if there is a new map (S307 → Yes), the map data is downloaded to the navigation terminal 1 (S309). S
In 307, if there is no newer map in the original map data 129 than the map held by the navigation terminal 1, an end response is transmitted to the navigation terminal 1 (S308).

The unpublished road information 130 can also be output via the data output means 121, and can be used as a material for the map data manager to determine the necessity and timing of updating the original map data 129. Also,
The data input unit 122 can receive new map data from the map data manager and upload the new map data to the original map data 129 via the map data management unit 126. By utilizing the road information notified from the navigation terminal 1, it is possible to quickly provide map data including a new road to other users.

[0048]

The navigation apparatus and the map updating method according to the present invention are constructed as described above, and in particular, detect road information that is not stored in the road information of the map data held by the navigation terminal, and send the information to the host computer 2. Notifications have been made, and map data corresponding to the notified road information can be automatically downloaded.
New map data is available when needed.
In addition, the map manager of the host computer can easily detect new roads, share the data with other vehicles, improve the efficiency of map data updates, and expect early map data updates. Can be done,
It is possible to provide a convenient navigation device and a map updating method with reduced user's labor.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a navigation device according to an embodiment of the present invention;

FIG. 2 is a flowchart showing the operation of the navigation terminal in the navigation device shown in FIG. 1,

FIG. 3 is a flowchart showing the operation of a host computer in the navigation device shown in FIG. 1;

[Explanation of symbols]

 Reference Signs List 1 navigation terminal 2 host computer 101 output means 102 input means 103, 123 processing unit 104 current position detection means 105 unpublished road detection means 106 unpublished road storage means 107 unpublished road data management means 108 parameter input means 109 map update means 110 , 124 Communication means 111 Map data 112 Unpublished road data 113 Judgment parameter 121 Data output means 122 Data input means 125 Map data transmission means 126 Map data management means 127 Unpublished road information storage means 128 Roadside area information management means 129 Original map Data 130 Unpublished road information 131 Roadside area information

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification FI FI Theme Court ゛ (Reference) G09B 29/10 G09B 29/10 A (72) Inventor Toru Sasaki 2-chome, Akimichi, Izumi-ku, Sendai City, Miyagi Prefecture Address F-term in Matsushita Communication Sendai Laboratory (reference) 2C032 HB12 HB22 HB25 HC08 HD03 2F029 AA02 AB07 AC02 AC14 AC16 AD04 5H180 BB04 FF05 FF13 FF22 FF27 FF37

Claims (16)

[Claims] 1. Map data for storing map information including roads, current position detecting means for detecting a current position, output means for displaying the map and the current position, communication means for communicating with a host computer, Unpublished road detecting means for detecting a position or route of a road not included in the map information by matching the map information with the current position, and an unpublished road for detecting the position or route of the road detected by the unpublished road detecting means. Unpublished road storage means that accumulates as data, and determines whether or not the unpublished road is an unpublished road by comparing the unpublished road data stored in the unpublished road storage means with the determination parameter information. An unpublished road data management unit for notifying the host computer, and an unpublished road presence notification from the unpublished road data management unit. When the data is transmitted to the host computer, the host computer downloads the map data that contains the road data corresponding to the notified unpublished road or newer map data when there is newer map data. A navigation unit having a map updating unit for updating, and notifying the unpublished road information to the host computer as necessary, and automatically downloading map data information corresponding to the unpublished road information from the host computer. A navigation device characterized by the above-mentioned. 2. A map in which, when the host computer receives a notification of the presence of an unpublished road from the unpublished road data management means, road data corresponding to the unpublished road for which the presence notification has been received is posted. 2. The navigation device according to claim 1, wherein when there is no data, the information on the unpublished road for which the presence notification has been received is stored. 3. The unpublished road data management means,
The navigation device according to claim 1 or 2, wherein the unpublished road data stored after transmitting the notification of the presence of the unpublished road to the host computer is deleted. 4. The method according to claim 1, wherein the determination parameter information is one of the number of stored data and the number of continuous stored data, or an operation coefficient for a combination thereof, or setting information of a user to use. 3. The navigation device according to any one of the above items 3. 5. The collection parameter information according to claim 1, wherein the determination parameter information includes collection-unnecessary area information that is information on an area that is not a road or an area that cannot be posted as a road. Navigation device. 6. The navigation device according to claim 4, further comprising parameter input means for changing and updating the determination parameter information. 7. A non-road area information indicating an area where there is no road on the notified non-published road in the host computer when the non-published road data management means transmits an unpublished road existence notification to the host computer. 7. The method according to claim 6, wherein, when the notified unpublished road is determined to be an area outside the road, the notified unpublished road is stored as collection unnecessary area information by the parameter input unit. Navigation device. 8. The unpublished road data stored in the unpublished road storage unit that matches the collection unnecessary area information by the unpublished road data management unit is deleted. The navigation device according to any one of the above. 9. A navigation having map data for storing map information including roads, current position detecting means for detecting a current position, output means for displaying a map and a current position, and communication means for communicating with a host computer. The apparatus detects a position or a route of a road not included in the map information by matching the map information with a current position, stores the detected road as unpublished road data, and stores the stored unpublished road. The data is determined based on the determination parameter information to determine whether the road is an unpublished road, the presence of the unpublished road is notified to the host computer, and the host computer is notified of the existence of the unpublished road to the host computer. The map data that contains the road data corresponding to the unpublished road that was notified in the computer, or If there is more recent map data, the process consists of downloading the map data and updating the map data, notifying the unpublished road information to the host computer as necessary, and responding to the unpublished road information from the host computer. A map updating method characterized by automatically downloading map data information to be updated. 10. The host computer, when receiving the notification of the presence of the unpublished road, when there is no map data that contains road data corresponding to the unpublished road for which the presence notification has been received. The map updating method according to claim 9, wherein information on the unpublished roads that have been notified is stored. 11. The map updating method according to claim 9, wherein said unpublished road data accumulated after transmitting a notice of the presence of an unpublished road to said host computer is deleted. . 12. The method according to claim 9, wherein the determination parameter information is any one of the number of stored data and the number of continuous stored data, or an operation coefficient for a combination thereof, or setting information of a user to be used. 11. The map updating method according to any one of 11. 13. The collection parameter information according to claim 9, wherein the determination parameter information includes collection unnecessary area information that is information on an area that is not a road or an area that cannot be posted as a road. Map update method. 14. The map updating method according to claim 12, wherein said determination parameter information is changed and updated in response to a request from said host computer. 15. When an unpublished road presence notification is transmitted from the navigation terminal to the host computer,
The notified unlisted road is compared with the outside road area information indicating an area without a road in the host computer, and when the notified unlisted road is determined to be the outside road area, the notified unlisted road is collected. 15. The map updating method according to claim 14, wherein information is stored as unnecessary area information. 16. The stored unpublished road data is compared with the collected unnecessary area information, and when they match, the stored unpublished road data is deleted. Map update method described in any of them.