JP2004020303A - Updating system for information - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To update index information and object information based on information transmitted from an information center, to be used properly. <P>SOLUTION: When the respective information of an index and an object stored in an information terminal 10 are updated, an area required for the updating is input from an input part 11 to be transmitted to the information center 20, and the center 20 transmits the respective information of the assigned area to the information terminal 10. The terminal 10 updates the respective information stored in an information storage part 13, based on the transmitted respective information. The index information is filed according to levels of main, sub-and detail classifications in every assortment, and the object information is filed in the every area. The each filed information is provided with an index part and a record part, and offset codes of the index part are updated in order after the record part is updated. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an information updating system that updates, for example, map information used in a navigation device and index information for searching the map information.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a navigation device, map information and index information for searching the map information have been stored in a large-capacity storage medium such as a CD-ROM or a DVD-ROM. A large-capacity storage medium, such as a CD-ROM or a DVD-ROM, in which is stored a CD-ROM or DVD-ROM, is mounted on an apparatus, and necessary map information and index information are read from these large-capacity storage media and used.
[0003]
On the other hand, if the information stored in the navigation terminal is not enough and additional information is needed, the additional information is obtained wirelessly from the information center, and a separate memory is used separately from the information originally held. For example, a method of overwriting the original information at the time of use and using the same is described in, for example, JP-A-8-321801.
[0004]
[Problems to be solved by the invention]
However, in a conventional system using a CD-ROM or the like, map information and index information for searching the map information change every moment due to construction, new road construction, construction of a new building, and the like. It is necessary to always purchase a new version of a CD-ROM, DVD-ROM, or the like, in order to obtain a map, and there is a problem that it is not possible to quickly respond to changes in map information.
[0005]
Further, Japanese Patent Application Laid-Open No. 8-321801 discloses a technique in which supplementary information is simply overwritten on the original information and displayed, and map information and index information are changed only in a specific area. In spite of this, there is a problem that it takes time to rewrite the information because all the original information has to be rewritten.
[0006]
The present invention has been made in view of such a problem, and an object of the present invention is to provide an excellent information updating system that can obtain only necessary information and efficiently update information.
[0007]
[Means for Solving the Problems]
An information updating system according to the present invention includes a storage unit that stores search target information, an input unit that specifies an area on a map, and an acquisition unit that obtains search target information existing in the area specified by the input unit from outside. Updating means for updating the search target information stored in the storage means for each area based on the search target information obtained by the obtaining means. With this configuration, the search target information can be efficiently updated and stored in the information storage unit for each necessary area.
[0008]
Also, in the information updating system of the present invention, the obtaining means may include a transmitting means for transmitting the information on the area to the information center, and receiving the search target information existing in the area extracted and transmitted based on the information on the area in the information center. Receiving means. With this configuration, search target information required for updating can be easily obtained from the information center by the transmission / reception means.
[0009]
Further, in the information updating system of the present invention, the obtaining means may include a transmitting means for transmitting the information on the area to the information center, and a mobile phone for storing the search target information existing in the area extracted based on the information on the area in the information center. With possible memory. With this configuration, even when transmission / reception cannot be performed by the transmission / reception unit, the search target information required for updating can be easily obtained by the portable memory, and the search target information stored in the information storage unit can be easily updated. be able to.
[0010]
Further, in the information updating system of the present invention, the search target information obtained by the obtaining means is added with information of addition or deletion, respectively, and the updating means updates based on the information of addition or deletion. And With this configuration, the search target information can be accurately and easily updated by adding when necessary and deleting when unnecessary.
[0011]
Further, the information updating system of the present invention is configured such that the area is an area divided by latitude and longitude. With this configuration, an area can be easily and accurately specified for each area divided in advance by latitude and longitude.
[0012]
Further, the information updating system of the present invention has a configuration in which the area is an administrative section. With this configuration, the area can be designated in administrative divisions such as prefectures, municipalities, large and small letters, streets, addresses, and issues, and the designation of the area is significantly facilitated.
[0013]
Also, the information updating system of the present invention is configured such that the input means can specify at least one of the attribute, the number, and the size of the information to be obtained, in addition to the area, and the obtaining means obtains the limited information. Information to be performed is limited according to the limited information. With this configuration, it is possible to arbitrarily limit information required for updating, and it has an effect of facilitating the updating operation.
[0014]
Further, the information updating system of the present invention includes a unit for acquiring a version of the search target information stored in the information storage unit, and the transmission unit determines a version of the search target information existing in the area specified by the input unit, The information is transmitted to the information center together with the area information. With this configuration, it is possible to limit the information required for updating obtained from the information center to a newer version than the version of the information held by the information center, and it is not necessary to obtain unnecessary old version information. Have.
[0015]
Further, the information updating system of the present invention is configured such that the search target information includes at least one of an index information file having a hierarchical structure for each search type and an object information file divided for each area. With this configuration, the search target information can be managed for each area or for each search type, and can be updated separately.
[0016]
In the information updating system of the present invention, the index information file and the object information file each have a record part in which information is recorded and an index part including address information for accessing the record part. The configuration is such that the address information is updated according to the update of the unit. With this configuration, even when the search target information is partially updated, the information can be updated while minimizing the amount of rewriting of the file.
[0017]
Further, the information updating system of the present invention includes a search unit for searching for a specific search target based on the index information file, and the search unit determines whether or not there is a code indicating the search target in the index portion of the index information file. Determining means, when there is a code, reading the address information of the record part where the search target is recorded from the index part, reading means for reading the information recorded in the address information from the record part, and information read by the reading means Display means for displaying With this configuration, a desired search can be performed using the information updating system of the present invention, and a search result can be presented to the user.
[0018]
Further, the information updating system according to the present invention is configured such that, when at least one piece of information is selected from the information displayed by the display means, the search means starts a search from a lower index information file. According to this configuration, the index information can be specified in order from the large classification to the middle classification and then to the small classification so that the index information file including the search target can be accurately traced, and these can be used as they are as the instruction information of the input means. Or search for information.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an information updating system according to an embodiment of the present invention will be described in detail with reference to the drawings.
[0020]
FIG. 1 is a schematic block diagram of an information updating system according to an embodiment of the present invention. As shown in FIG. 1, an information updating system according to an embodiment of the present invention includes an information terminal 10 that obtains and uses information, and an information center 20 that provides information to the information terminal 10. The information terminal 10 includes an input unit 11, a display unit 12, an arbitrarily rewritable information storage unit 13, a transmission / reception unit 15 for transmitting / receiving information to / from an information center 20, and a control unit for controlling these units. The information center 20 includes a center-side information storage unit 21, a center-side transmitting / receiving unit 23 for transmitting / receiving information to / from the information terminal 10, and a center-side control unit 22 for controlling the same. ing.
[0021]
In the present embodiment, the information storage unit 13 of the information terminal 10 stores object information and index information stored in a CD-ROM, a DVD-ROM, or the like, and obtains the information from the information center 20 as necessary. The obtained object information and index information are stored.
[0022]
Hereinafter, the configurations of the object information and the index information stored in the information storage unit 13 of the information terminal 10 and the information storage unit 21 of the information center 20 will be specifically described with reference to FIG.
[0023]
FIGS. 2A and 2B schematically show the structure of search target information such as object information and index information stored in the information storage units 13 and 21. The index information includes a facility, a telephone, and an address. Each type of information is divided into a large classification and a small classification, and is filed at each level, and the object information is divided into regions and filed.
[0024]
FIG. 2A is an example of a search target information file having an index information file hierarchized by type such as facility and telephone, and an object information file including facility information and other information corresponding to each type. FIG. 2B shows an example in which only an address index information file is provided. The present invention is applicable to any configuration.
[0025]
As shown in FIG. 3, for example, when the type is a facility, the index information is classified into a large category, such as food sales and fuel sales, a middle category, a convenience store, a gas station, and the like, and a small category. It is classified as A company, B company, X company, Y company and the like. In the case of telephone, the area is classified into an area code in a large category, the area code in a middle category, and a subscriber number in a small category. Are classified into municipalities, large letters at level 3, small letters at level 4, and streets, streets, and numbers at level 5, respectively. As shown in FIG. 3, the large classification, the middle classification, and the small classification correspond to levels 1 to 3, respectively, and indicate the hierarchical relationship between the hierarchies.
[0026]
The object information includes, for example, business hours, contents, telephone numbers, and other information in addition to specific facility names, locations, and attributes, and is divided into equal intervals by latitude and longitude as shown in FIG. Then, each area 400 is determined, or each area is determined in an administrative section such as a city, a municipal or the like, and is filed for each area. FIG. 4 illustrates a case where the inside of Kanagawa Prefecture is divided into 36 areas 400 vertically and horizontally divided into six equal parts, and the distribution of a convenience store 401, a gas station 402, a parking lot 403, a post office 404, and a school 405 is illustrated. It is shown.
[0027]
5 to 8 show more specific examples of the index information and the object information in the form of files. FIG. 5 is a file of the facility index sub-classification shown in FIG. 2, and FIG. 2, a file of the object information for each area shown in FIG. 2, FIG. 7 shows a specific example of the prefectural file for the address index shown in FIG. 2, and FIG. 8 shows a specific example of the municipal file for the address index shown in FIG. Each is shown.
[0028]
As shown in FIGS. 5 to 8, each file has an index portion and a record portion, and the index portion stores an upper level code and an offset code, and the record portion is classified. Attribute consisting of the name of the facility or address, the code assigned to the name of the facility or address, the latitude and longitude indicating the location of the facility or address, and, in the case of a facility, the classification name of the facility And other information are stored. In the other information column, the facility opening time and other facility-specific information are stored.
[0029]
Next, the operation of the embodiment of the present invention will be described.
[0030]
FIGS. 9 to 11 are flowcharts showing operations when information is updated using the information updating system according to one embodiment of the present invention.
[0031]
As described above, the information storage unit 13 of the information terminal 10 stores object information and index information in addition to map information, but these information are constantly changing, and are updated. is necessary.
[0032]
First, a general flow of the update will be described. If updating is necessary, the information terminal 10 is first set to the update mode, and the area or index of the information to be updated is specified using the input unit 11 (step 601). The area to be updated may be specified by directly inputting the latitude and longitude using the input unit 11, or may be specified by inputting the name of an administrative division such as a prefecture or city. .
[0033]
In addition, the index may be specified by inputting a level for each type, or a certain level may be specified collectively. In any case, when a transmission operation is performed using the input unit 11 as a parameter for designating an area or an index, the parameter is transmitted to the information center 20 via the transmission / reception unit 15 (step 602). Hereinafter, FIG. 9 will be described by taking as an example a case where an area is designated.
[0034]
The parameter designating the area transmitted to the information center 20 is received by the transmission / reception unit 23 of the information center 20 (step 603), and is input to the control unit 22. The control unit 22 calculates the designated area from the input area or the parameter designating the index (step 604), and stores the object information or the index information of the designated area in the information storage unit 21, respectively. Extract from the object information or index information (step 605). Then, the extracted object information and index information are transmitted to the information terminal 10 via the transmission / reception unit 23 with update category information added thereto (step 606). The update classification information will be described later in detail.
[0035]
When the extracted object information and index information are transmitted from the information center 20, respectively, the object information and index information are received by the transmission / reception unit 15 of the information terminal 10 (step 607). Under the control, the object information or index information stored in the information storage unit 13 is updated to the previously received object information or index information and stored (step 608).
[0036]
Hereinafter, the updating and storing operation (step 608) on the information terminal side will be described in detail with reference to FIG. When the object information or the index information is received from the information center 20 via the transmission / reception unit 15, the received information (acquisition information) and the information (holding information) stored in the information storage unit 13 in advance in the control unit 14 are mutually exchanged. A comparison is made (step 701). As a result of the comparison, when the codes assigned to the respective information are not the same (N in step 702), the acquired information is added to the information storage unit 13 as it is (step 703) and stored (step 704). .
[0037]
If the code of the acquired information is the same as the code of the information stored in the information storage unit 13 in advance (Y in step 702), the update classification information added to the acquired information by the information center 20 side , The control unit 14 automatically determines whether the acquired information is integrated or deleted (step 705).
[0038]
Here, the update division information provided on the information center 20 side is information indicating in what state the information was updated when the information was updated on the information center 20 side. Each time the information is updated on the information center 20 side, the information is added to the updated information.
[0039]
Specifically, if there is no change in the code but the name has changed, or if there is no change in the code or name but at least part of the contents have been changed, integration, In the case where the code has not been changed but the entity has disappeared, the updated classification information is added to the updated information, such as deletion, in the case of deletion. Since the updated section information is added to the acquired object information and index information, the control unit 14 of the information terminal 10 determines whether to integrate or delete using the updated section information. (Step 705).
[0040]
If it is determined that the information is integrated, the acquired information is integrated with the information stored in the information storage unit 13 and stored in the information storage unit 13 (step 704). If the information has been deleted, the information stored in the information storage unit 13 is deleted as it is (step 707).
[0041]
As described above, in the present embodiment, the updated information is added to the information updated on the information center 20 side, and when the updated information is received on the information terminal 10 side, the updated information is added to the information. The information can be updated accurately using the updated update classification information.
[0042]
Then, as shown in FIG. 11, such information updating is first executed for all object information (step 801), and subsequently executed for all index information (steps 802 to 805). That is, when the information is updated for all the object information in the procedure shown in FIG. 10, the level i of the index information is recognized, and the level value of the index information (level i = 5, facility, telephone, level i = 3) is substituted (step 802), and index information at that level is updated in the same procedure as shown in FIG. (Step 803). When the level i index information is updated, the level i of the index information is decremented by 1 (step 804), and the updated level i index information is updated by the procedure shown in FIG. And the same operation is repeated until i becomes 0 (step 805). As described above, in the present embodiment, the object information and index information stored in the information storage unit 13 are all updated to the latest ones based on the acquired object information and index information.
[0043]
In the present embodiment, an area (or index) is designated and all object information or index information of the area is acquired and updated. May be specified, and only the object information and the index information that match these are acquired and updated.
[0044]
FIG. 12 is a flowchart showing the operation of the information updating system according to another embodiment configured so that the attribute, size, and the like of such information can be designated. Next, the operation of this embodiment will be described. This will be described in detail. Since the configuration of the present embodiment is the same as that of FIG. 1, the detailed description is omitted here.
[0045]
As shown in FIG. 12, using the input unit 11 of the information terminal 10, in addition to the area, the attributes of information to be acquired (for example, information indicating the classification of facilities such as convenience stores and gas stations), It is possible to specify at least one (hereinafter referred to as designated information) of the number (the number of information, the number of files, etc.), the size of the information (the total amount of information, or the allowable communication capacity allowed at the time of communication, etc.). When these are designated using the input unit 11 of the information terminal 10 (step 901), the control unit 14 of the information terminal 10 transmits the object information such as the previously designated area and the designated information held by itself. , Information indicating a version such as the version number and acquisition time of index information (hereinafter referred to as “version information”) is stored in the object information stored in the information storage unit 13. Obtained from information accompanying the broadcast (step 902), and transmits the version information, each with area information and designation information specified earlier through the transmitting and receiving unit 15 to the information center 20 side (Step 903).
[0046]
When the designated area information and the designated information are transmitted to the information center 20 via the transmission / reception unit 15 together with the version information, the information is received by the center-side transmission / reception unit 23 of the information center 20 (step 904). Are input to the center-side control unit 22. The center-side control unit 22 stores the specified area, the specified object information, and the index information of the latest version from the version based on the input version information, area information, and specified information, respectively, in the center-side information storage unit 21. (Step 905).
[0047]
If the information terminal 10 specifies the attribute of the information to be obtained in addition to the area, the object information and index information of the specified attribute specify the number of obtainable information. Are extracted from the center side information storage unit 21, respectively.
[0048]
If the size of the information that can be obtained is specified on the information terminal 10 side (Y in step 906), the size of the information extracted from the center side information storage unit 21 is calculated (step 907), and the calculation is performed. It is determined whether the size of the received information is within the specified information size (step 908).
[0049]
If the calculated information size is within the specified information size (Y in step 908), the extracted information (object information and index information) is output as it is (step 909), and the center side transmitting / receiving section The data is transmitted to the information terminal 10 via 23 (Step 910).
[0050]
If the calculated information size is larger than the specified information size (N in step 908), the extracted information is stored in a portable memory and separately sent to the owner of the information terminal 10. In consideration of this, the center-side control unit 22 automatically determines whether a portable memory is connected to the information center 20 (step 911).
[0051]
If the result of the determination is that a portable memory is not connected (N in step 911), information indicating that information cannot be acquired is output (step 912), and the information is transmitted via the transmission / reception unit 23. The information is transmitted to the information terminal 10 (step 910). If a portable memory is connected (Y in step 911), the information extracted from the center side information storage unit 21 is stored in the portable memory (step 913), and the information to that effect is stored. Is transmitted to the information terminal 10 via the transmission / reception unit 23 (step 910).
[0052]
The information terminal 10 receives these pieces of information from the information center 20 via the transmission / reception unit 15 (step 914), and performs the following processing according to each piece of information. That is, if the received information is the object information and index information extracted from the center-side information storage unit 21, the object information stored in the information storage unit 13 of the information terminal 10 based on these information, The index information is updated and stored in the same manner as shown in FIG. 10 (step 915).
[0053]
If the received information is information indicating that information cannot be obtained or information indicating that the information has been stored in a portable memory, these are displayed on the display unit 12 (step 916). , Respectively, to notify the owner of the information terminal 10.
[0054]
As described above, according to the present embodiment, it is possible to arbitrarily specify not only the area, but also the attribute, number, size, and the like of the information to be obtained, thereby reducing unnecessary information acquisition and further increasing efficiency. be able to. In particular, since the version can be automatically acquired and specified, it is not necessary to memorize it or input it from the input unit, and the specification is very easy and accurate.
[0055]
By the way, a procedure of updating information and a procedure of searching, which is a part common to the above-described two embodiments, will be described below using specific examples.
[0056]
First, a specific example of updating information will be described. As shown in FIG. 13, in the information terminal 10, “Saitama City” exists in the original index information file (A) (including the index (A) and the record (A)) of the address originally held. Suppose you did not. At this time, if a new additional index information file (B) (including an index (B) and a record (B)) is obtained from the information center 20, and if "Saitama-shi" is included in the file, these additional index information files (B) are included. The information is updated in the information terminal 10 as follows.
[0057]
That is, the control unit 14 of the information terminal 10 first compares the codes of the record portions of the additional index information file (B) and the original index information file (A), and from the result, the additional information is "Saitama Saitama Prefecture". (Code 2591). " Then, the prefecture name (upper level code 2500) stored in the index portion of the original index information file (A) is collated in order from the top to extract the position of Saitama prefecture, and the offset code at that position is used to extract " The head address of the part where the city of "Saitama prefecture" is registered is extracted.
[0058]
In the offset code, information is recorded so that the start address of the record portion in which the content of the corresponding upper level code is written can be known. That is, by referring to the offset code, it is possible to know where the data corresponding to each upper level code is recorded in the record. In the offset code, for example, an offset value from a reference address may be recorded, and an absolute address is not necessarily recorded.
[0059]
Then, the respective cities of “Saitama Prefecture” are collated in order from the extracted top city (Ageo city in the example of FIG. 13), and in this embodiment, the cities are registered in order of Ai, In this case, search is made to find the location of “Saitama City”.
[0060]
If the position where "Saitama City" is inserted is searched, the data of "Saitama City" is inserted at that position as shown in the record (C) in the updated index information file (C) of FIG. The information of the start address recorded in all offset codes from "Saga Prefecture" to "Wakayama Prefecture" after "Saitama Prefecture" in the index part is shifted by the amount corresponding to the data amount of "Saitama City" (In the example in the figure, it is shifted by 1). By doing so, even if a new municipality is born, the information can be easily updated.
[0061]
Next, information retrieval will be described. FIG. 14 is a flowchart illustrating an operation of the information terminal 10 when searching for information stored in the information storage unit 13. The information stored in the information storage unit 13 is filed as described above, and is specifically as shown in FIGS. Therefore, here, an operation in a case where information is searched using the index information file of the addresses shown in FIGS. 7 and 8 will be described.
[0062]
To search for information, first, as shown in FIG. 14, an upper level code to be searched is initialized to 0 (step 1101). If the level of the index information is i (step 1102), it is determined whether or not the index information file of the level i exists (step 1103).
[0063]
Taking the index information file shown in FIG. 7 as an example, the level of the index information file is “1”. Therefore, if i is “1”, it means that the index information file of level i exists as FIG. become.
[0064]
If there is an index information file of level i, the information stored in the index portion of the index information file is read (step 1104), and the number j of how many indexes exist in the index portion is calculated (step 1105). . Then, the upper level codes of the index are read in order, and it is determined whether or not the code is the same as the upper level code to be searched (step 1106).
[0065]
This determination is continued until the upper-level code in the index portion is not the same as the upper-level code to be searched until the number j of the previously calculated index is reached.
[0066]
If there is no identical high-level code to be searched even if it continues to reach the number j of the previously calculated index, a user selection screen other than the list selection is displayed and the processing according to the command is executed. (Step 1113). If there is an index having the same upper-level code as the upper-level code to be searched, an offset code is acquired from the index (step 1107).
[0067]
When the offset code is obtained, the information of the corresponding record portion is read based on the offset code (step 1108), and displayed as a list on the display unit 12 (step 1109). At the time of display, it may be displayed in a list, but may be scrolled in order.
[0068]
Here, taking the index information file shown in FIG. 7 as an example, the number of indexes is “1”, and the upper level code of the index is “0”. Therefore, the upper level code of the index is the same as the upper level code “0” of the object initialized earlier, and the offset code “1” of the index is read. Then, based on the offset code “1”, the information of the corresponding record portion, that is, the information from Aichi Prefecture to Wakayama Prefecture is displayed as a list on the display unit 12.
[0069]
In this way, when the information of the record portion is displayed as a list on the display unit 12, an arbitrary item can be selected based on the displayed list, or another information or command can be arbitrarily selected. (Step 1110).
[0070]
When one of them (for example, one prefecture in the index information shown in FIG. 7) is selected from the list displayed on the display unit 12 (Y in step 1111), 1 is added to the level i of the index information. (Step 1112) The process returns to Step 1102 again to repeat the same operation. Therefore, in this case, the level of the index information is increased by one. In the example of FIGS. 5 to 8, the processing shifts to the index information file at the municipal level shown in FIG. 8, and the same operation is repeated. Become.
[0071]
If another information or command is selected without selecting from the list displayed on the display unit 12, another operation and processing are performed according to the selected information and command (step 1113).
[0072]
As described above, according to the present embodiment, information is stored in the form of a file, and each file has an index portion and a record portion. Information is extracted and displayed. If an arbitrary one is selected from the displayed information, the next level of information can be sequentially displayed, and the desired information can be easily selected and searched. .
[0073]
That is, according to the present embodiment, desired information can be sequentially displayed, selected, and searched, and the obtained information and code can be input as they are from the input unit 11 as condition input (input for designating an area, an attribute, and the like). ) Or as input of search conditions for object information, and these inputs can be made easily and accurately.
[0074]
【The invention's effect】
As described above, according to the information updating system of the present invention, both the index information and the object information can be updated to new ones and stored in the information storage means, and the index information and the object information stored in the information storage means can be appropriately updated. Can be used effectively.
[Brief description of the drawings]
FIG. 1 is a schematic block diagram of an information updating system according to an embodiment of the present invention.
FIG. 2 is a schematic configuration diagram of index information and object information used in an information updating system according to an embodiment of the present invention. FIG. 2A shows an index information file and an object hierarchized by facility and telephone type. FIG. 2B is a configuration diagram of a search target information file having an information file and a configuration diagram of a search target information file including only an address index information file.
FIG. 3 is a diagram showing a classification example of index information used in the information updating system according to the embodiment of the present invention;
FIG. 4 is a diagram showing an example of an area of object information used in the information updating system according to the embodiment of the present invention;
FIG. 5 is a diagram illustrating an example of a search information file of facility (small classification) of filed index information and object information of the information updating system according to the embodiment of the present invention;
FIG. 6 is a diagram showing an example of an object information file for each area of filed index information and object information of the information updating system according to the embodiment of the present invention;
FIG. 7 is a diagram showing an example of a prefectural-level index information file of filed index information and object information of the information updating system according to the embodiment of the present invention;
FIG. 8 is a view showing an example of a filed index information and an index information file at the municipal level of the object information of the information updating system according to the embodiment of the present invention;
FIG. 9 is a first flowchart illustrating the operation of the information updating system according to the embodiment of the present invention;
FIG. 10 is a second flowchart illustrating the operation of the information updating system according to the embodiment of the present invention;
FIG. 11 is a third flowchart illustrating the operation of the information updating system according to the embodiment of the present invention;
FIG. 12 is a fourth flowchart illustrating the operation of the information updating system according to the embodiment of the present invention;
FIG. 13 is a diagram showing an example in which information is specifically updated using the information updating system according to the embodiment of the present invention;
FIG. 14 is a fifth flowchart illustrating the operation of the information updating system according to one embodiment of the present invention;
[Explanation of symbols]
10 Information terminal
11 Input section
12 Display
13 Information storage unit
14 Control unit
15 Transceiver
20 Information Center
21 Center side information storage
22 Center side control unit
23 Center side transceiver

Claims (12)

Storage means for storing search target information, input means for specifying an area on a map, obtaining means for obtaining search target information existing in the area specified by the input means from outside, and obtaining by the obtaining means Updating means for updating the search target information stored in the storage means for each area based on the search target information. The obtaining means includes transmitting means for transmitting the information of the area to an information center, and receiving means for receiving search target information existing in the area, which is extracted and transmitted based on the information of the area in the information center. The information updating system according to claim 1, further comprising: The obtaining unit includes a transmitting unit that transmits information of the area to an information center, and a portable memory that stores search target information existing in the area extracted based on the information of the area in the information center. The information updating system according to claim 1, further comprising: The retrieval target information obtained by the obtaining means is provided with information of addition or deletion, respectively, and the updating means updates based on the information of addition or deletion. An information updating system according to any one of claims 1 to 3. 4. The information updating system according to claim 1, wherein the area is an area divided by latitude and longitude. 4. The information updating system according to claim 1, wherein the area is an administrative section. The input means is configured to be able to designate at least one piece of limited information among the attribute, the number, and the size of the information to be obtained, in addition to the area, and the information obtained by the obtaining means is limited to the limited information. 2. The information updating system according to claim 1, wherein the information is limited according to the information. Means for acquiring a version of the search target information stored in the information storage means, wherein the transmitting means determines the version of the search target information present in the area designated by the input means together with the information of the area, The information updating system according to claim 1, wherein the information is transmitted to a center. The information updating system according to claim 1, wherein the search target information includes at least one of an index information file having a hierarchical structure for each search type and an object information file divided for each area. Each of the index information file and the object information file has a record part that records information and an index part that includes address information for accessing the record part, and the updating unit responds to an update of the record part. The information updating system according to claim 9, wherein the address information is configured to be updated by updating the address information. A search unit that searches for a specific search target based on the index information file, wherein the search unit determines whether there is a code indicating the search target in an index portion of the index information file; When there is, reading means for reading the address information of the record portion where the search target is recorded from the index part, reading means for reading the information recorded in the address information from the record part, and information read by the reading means 11. An information updating system according to claim 10, further comprising: display means for displaying the information. 12. The information updating system according to claim 11, wherein said search means starts searching from a lower index information file when at least one information is selected from the information displayed by said display means. .

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