JP3624606B2 - Map information capturing method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is applied to, for example, a vehicle navigation system, communicates with a map information providing unit, and selects and takes in map information that can be provided by the map information providing unit and The present invention relates to a map information capturing device.
[0002]
[Prior art]
As a vehicle navigation device that is one of the on-road driving assistance systems for a vehicle, an image display unit arranged in a vehicle compartment forming unit in the vehicle is provided, and the image display unit includes a traveling area of the vehicle. A map is displayed, and various information such as the current position of the vehicle, the destination, and the planned route to pass from the current position to the destination are displayed on the displayed road map. What has been proposed is proposed. In the image display unit in such a navigation device, in addition to displaying a road map and the current position of the vehicle on the road map, map information regarding shopping streets, hotels, inns, restaurants, etc. in a specific area is also displayed. Often done.
[0003]
Such a vehicle navigation apparatus is usually provided with a computer unit, to which an information reproduction unit, an image display unit, etc. for reproducing information from an information recording medium are connected. Operation control by the computer unit is performed for the unit, the image display unit, and the like. Then, map data representing the road map and various buildings and facilities on the road map included in the map data, for example, landmarks and place names indicating shopping streets, hotels, inns, restaurants, etc. are displayed on the information reproduction unit. An information recording medium having a relatively large storage capacity in which map information including mark data representing characters to be shown is stored is loaded. Then, map data and mark data included in the map information stored in the information recording medium are appropriately read out and reproduced by the information reproducing unit, and a video signal based on the map data and mark data obtained from the information recording medium Is supplied to the image display unit. Thereby, in the image display unit, based on the map data and the mark data, for example, a road map and an image display about the current position of the vehicle and various buildings and facilities around the current position are superimposed on the road map. .
[0004]
The information recording medium used by being mounted on the information reproducing unit is, for example, a compact optical disc in which writing of information on the information recording medium and reading of information from the information recording medium are performed using a light beam. There are several types of compact optical discs, but the compact optical discs used for vehicle navigation devices are designed to be used exclusively for reading information, or capable of writing and reading information.
[0005]
In a compact optical disc for reading information, it is assumed that map information including map data, mark data, etc. is stored in advance and is passed to the user, and the stored map information is erased or new information is stored by the user. The writing of is prohibited. Further, in a compact optical disc capable of writing and reading information, it is assumed that map information including map data, mark data, etc. is stored in advance, and is then stored in advance by the user. It is possible to delete the map information or to write new information. As a compact optical disc on which information can be written and read, there is a so-called so-called phase change recording.
[0006]
When an optical disc capable of writing and reading information is used, the information reproducing unit to which the optical disc is mounted is an information recording / reproducing unit that has an information recording function.
[0007]
[Problems to be solved by the invention]
As described above, when a navigation device including an information reproducing unit or an information recording / reproducing unit and an image display unit connected to the computer unit is put into actual use, the information reproducing unit or the information recording / reproducing unit An information recording medium such as a compact optical disc in which map information is stored in advance is loaded. Such information recording media are classified in various ways according to the contents of the map information stored in advance.
[0008]
For example, it is classified according to the area of the road map represented by the map data included in the map information, or classified according to the contents of the shopping district, hotel / inn, restaurant, etc. represented by the mark data included in the map information. Specifically, in the case where the map data is classified according to the area of the road map, for example, the map data representing the road map of Japan is stored, the map data representing the road map in each prefecture Are stored, map data representing a detailed road map in each city is stored, and the like. In addition, in the case of items classified according to the contents such as shopping streets, hotels, inns, restaurants, etc. that mark data represents, for example, those that contain mark data that introduces shopping streets in each city, restaurants in each city The mark data to be stored is stored.
[0009]
Therefore, a user who obtains map information from an information recording medium by attaching an information recording medium in which map information is stored in advance to the information reproducing unit or the information recording / reproducing unit is an information recording medium suitable for the purpose or intended purpose. In addition, it is required to appropriately replace the information reproducing unit or the information recording medium attached to the information recording / reproducing unit as necessary. The information stored in advance in one information recording medium includes not only the information desired by the user but also the other part is information not desired by the user. Because it occurs.
[0010]
The selection or exchange of such information recording medium according to the contents of the map information stored in it causes the user to be bothered, and there are many different classifications in practice. As a result, the user is requested to prepare an information recording medium, and there is a problem that a burden is imposed on the user.
[0011]
In view of the above, the present invention provides a user who uses an information recording medium such as a compact optical disc mounted on the information reproducing unit or the information recording / reproducing unit, and reproduces and uses the map information stored in the information recording medium. Therefore, it is not necessary to prepare a large number of information recording media with different classifications, and for example, map information that brings about a situation where desired map information can be efficiently obtained from one information recording medium. Provided are a capturing method and a map information capturing device.
[0012]
[Means for Solving the Problems]
The map information capturing method according to the present invention is: Computer part A heading selected from among headings for map information that can be provided by the map information providing unit, and a request heading that represents a data capturing capacity that can be used for capturing the map information specified by the selected heading. List information Through the communication department Send to map information provider The first step to , Computer part Refer to the data amount related information related to the data amount of map information specified by the selected header and the available data capture capacity sent from the map information provider, and correct the requested header list information. After sending the correction request heading list information to the map information provider In Or, modify the requested header list information. Without worry , Map information transmission request information Through the communication department Send to map information provider The second step to , Computer part From the map information provider , Correction request header list information and map information transmission request information, or Request header list information And map information transmission request information Will be sent according to Correction request header list information or Request header list information In the news Take in the map information specified by the specified headline, In the information recording / playback unit Recording on an information recording medium And a third step It is supposed to be.
[0013]
In addition, the map information capturing device according to the present invention includes a heading selected from the headings for the map information that can be provided by the map information providing unit, and the map information specified by the selected heading. Map information specified by the selected headline sent from the map information providing unit and a first means for sending the requested heading list information representing the data fetching capacity usable for fetching to the map information providing unit Of the request header list information by referring to the data amount relation information regarding the data amount and the available data capture capacity, correcting the request header list information, and sending the corrected request header list information to the map information providing unit. A second means for selectively selecting a state in which correction is not performed, and a correction request by the second means after the request header list information is transmitted by the first means. Third information for sending the map information transmission request information to the map information providing unit in a state where the transmission list information is transmitted or in a state where the request header list information is not corrected by the second means From the means and the map information provider , Correction request header list information and map information transmission request information, or Request header list information And map information transmission request information Will be sent according to Correction request header list information or Request header list information In the news And fourth means for taking in map information specified by the designated heading and recording it on an information recording medium.
[0014]
According to the map information capturing method and map information capturing apparatus according to the present invention as described above, map information arbitrarily selected from the map information that can be provided by the map information providing unit is included in the capturing. The data is taken in according to the usable data take-in capacity, and is recorded on, for example, an information recording medium that is a compact optical disc on which information can be written and read. Thereby, a map that can be provided by the map information providing unit for a user who uses the information recording medium mounted on the information reproducing unit or the information recording / reproducing unit and reproduces and uses the map information stored in the information recording medium. For example, it is possible to obtain an information recording medium in which a plurality of types of map information selected as desired information from the information are efficiently stored.
[0015]
Therefore, for example, for a user who uses an information recording medium such as a compact optical disc mounted on an information reproducing unit or information recording / reproducing unit provided in a navigation device for a vehicle, many information recording media having different classifications are used. For example, a desired map information can be efficiently obtained from one information recording medium.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 2 is a map information providing unit for communicating with a navigation device for a vehicle to which an example of a map information capturing device according to the present invention in which an example of a map information capturing method according to the present invention is applied. It is shown together with the map information provision center that forms.
[0017]
The navigation device 11 shown in FIG. 2 is assumed to be mounted on a vehicle. And the navigation apparatus 11 is provided with the computer part 12, and input operation is performed with respect to the computer part 12 through the input operation part 13 used as a keyboard, a mouse | mouth, etc., for example. In addition, the navigation device 11 is provided with a position detection unit 14, an information recording / reproducing unit 15, an image display unit 16, and a communication unit 17 that are controlled by the computer unit 12.
[0018]
The position detection unit 14 uses the GPS (global positioning system) signal, for example, for the position of the vehicle on which the navigation device 11 is mounted, and further includes various sensors such as a vehicle speed sensor and a geomagnetic sensor provided in the vehicle. Detection is performed based on the detection output from the vehicle sensor unit 18, and position data representing the detected vehicle position is supplied to the computer unit 12.
[0019]
The information recording / reproducing unit 15 is configured by, for example, a disc player to which a compact optical disc that is an information recording medium is mounted. The compact optical disc mounted on the disc player constituting the information recording / reproducing unit 15 is, for example, a so-called compact optical disc on which phase change recording is performed and information can be written and read, and map data representing a road map corresponding thereto. , And record of map information including various buildings and facilities on the road map included in the map data, such as landmarks indicating shopping streets, hotels, inns, restaurants, etc., and mark data representing characters indicating place names, etc. And the map information recorded on it is read out. Then, the map information recorded on the compact optical disc in the information recording / reproducing unit 15 is supplied to the information recording / reproducing unit 15 through the computer unit 12, and the map information read from the compact optical disc in the information recording / reproducing unit 15 is It is supplied to the computer unit 12.
[0020]
The image display unit 16 displays various images such as a road map represented by the map data included in the map information, a landmark represented by the mark data, and the like according to various display video signals supplied from the computer unit 12.
[0021]
The communication unit 17 sends various types of information formed by the computer unit 12 to the outside of the navigation device 11, takes in various types of information including map information from the outside of the navigation device 11, and sends them to the computer unit 12. Supply.
[0022]
Further, the map information providing center 21 forming the map information providing unit shown in FIG. 2 is an information providing facility installed at a predetermined location. The map information providing center 21 includes a computer unit 22, and an input operation is performed on the computer unit 22 through an input operation unit 23 such as a keyboard and a mouse. Further, the map information providing center 21 is provided with an information database 24, an image display unit 25, and a communication unit 26, whose operation is controlled by the computer unit 22.
[0023]
The information database 24 stores map information including various kinds of map data, mark data, and the like in a relatively large optical disk system, for example, in a state where it can be freely extracted by the computer unit 22. Further, new map information is appropriately added to the optical disc system through the computer unit 22.
[0024]
The image display unit 25 displays various images such as a road map represented by the map data included in the map information, a landmark represented by the mark data, and the like according to various display video signals supplied from the computer unit 22.
[0025]
The communication unit 26 sends various types of information formed based on the map information extracted from the information database 24 by the computer unit 22 to the outside of the map information providing center 21 and the map information providing center 21. Various types of information including map information from the outside is taken in and supplied to the computer unit 22.
[0026]
Under such circumstances, the communication unit 17 in the navigation device 11 communicates with the communication unit 26 in the map information providing center 21, and exchanges information through the communication line 30 established with the communication unit 26. Is called.
[0027]
In the navigation device 11, an example of the map information capturing device according to the present invention is configured by a portion including the computer unit 12, the input operation unit 13, the information recording / reproducing unit 15, the image display unit 16, and the communication unit 17. An example of the map information capturing method according to the present invention is implemented by an example of the map information capturing device.
[0028]
In carrying out an example of the map information capturing method according to the present invention, a series of information exchange as shown in FIG. 1 is performed between the navigation device 11 and the map information providing center 21 as follows. Done.
[0029]
First, as shown as information exchange step S1 in FIG. 1, access to the map information providing center 21 from the navigation device 11 side is controlled by the computer unit 12 of the navigation device 11 under the operation control by the communication unit in the navigation device 11. 17 and the communication unit 26 in the map information providing center 21. In response to such access, the map information providing center 21 displays all the map information that can be extracted from the information database 24 by the computer unit 22 and sent out through the communication unit 26 with the heading of each map information. Heading list information (A) "is formed. Then, as shown as information exchange step S2 in FIG. 1, transmission of “provable information heading list information (A)” from the map information providing center 21 to the navigation device 11 is performed by the computer unit 22 of the map information providing center 21. This is performed through the communication unit 26 in the map information providing center 21 and the communication unit 17 in the navigation device 11 under the operation control.
[0030]
The “provable information heading list information (A)” transmitted from the map information providing center 21 to the navigation device 11 is taken in by the computer unit 12 of the navigation device 11 and the contents thereof are, for example, as shown in FIG. The image display unit 16 displays an image as [providable map information]. In the navigation device 11, based on an input operation by the user through the input operation unit 13, a desired one is selected from the headings included in the “providable information heading list information (A)” by the computer unit 12. . Further, the computer unit 12 detects the recording data capacity that can be used for recording new map information, which the compact optical disc in the information recording / reproducing unit 15 has at this time.
[0031]
Next, the computer unit 12 represents a headline selected from the headlines included in the “providable information heading list information (A)”, and can be used for recording new map information on the detected compact optical disc. “Request heading list information (B)” is formed, which represents the recording data capacity as a capturing capacity that can be used for capturing each piece of map information specified by each of the selected headings. The formed “request heading list information (B)” is controlled by the image display unit 16 as “request map information” as shown in FIG. An image is displayed.
[0032]
Then, as shown as information exchange step S3 in FIG. 1, the transmission of “request heading list information (B)” from the navigation device 11 to the map information providing center 21 is the operation control by the computer unit 12 of the navigation device 11. The communication unit 17 in the navigation device 11 and the communication unit 26 in the map information providing center 21 are performed.
[0033]
The “request heading list information (B)” transmitted from the navigation device 11 to the map information providing center 21 is captured by the computer unit 22 of the map information providing center 21. Thereafter, the computer unit 22 calculates the data amount of each piece of map information specified by each of the selected headings included in the “request heading list information (B)”, and the calculated data amount of each piece of map information. And the capture capacity that can be used for capturing each piece of map information specified by each of the selected headlines included in the “required headline list information (B)” is compared to determine the magnitude relationship between the two. It is done.
[0034]
Subsequently, the computer unit 22 adds the data amount of each map information specified by each selected heading and the sum of the data amount of each map information specified by each selected heading and the selected heading. The “data amount relation information (C)” representing the magnitude relation with the taking-in capacity that can be used for taking in each map information specified by each of the above is formed. Then, as shown as information exchange step S4 in FIG. 1, the transmission of “data amount related information (C)” from the map information providing center 21 to the navigation device 11 is controlled by the computer unit 22 of the map information providing center 21. Is performed through the communication unit 26 in the map information providing center 21 and the communication unit 17 in the navigation device 11.
[0035]
The “data amount relation information (C)” transmitted from the map information providing center 21 to the navigation device 11 is taken in by the computer unit 12 of the navigation device 11 and the content thereof is, for example, as shown in FIG. The image display unit 16 displays an image as [request map information data amount]. In the navigation device 11, “data amount relation information (C)” is referred to, and the computer unit 12 performs a reference result of “data amount relation information (C)” based on an input operation by the user through the input operation unit 13. In response to this, a state in which “request heading list information (B)” is corrected and a state in which “request heading list information (B)” is not corrected are selectively taken.
[0036]
In such a case, for example, the “data amount related information (C)” is specified by each of the selected headings, and the sum of the data amount of each map information specified by each of the selected headings is specified. Data amount of each map information specified by each of the selected headings for “Request Heading List Information (B)” Corrections that reduce the sum of, for example, corrections that change a particular one of the selected headings into a heading that has a small amount of map information identified thereby, The information (C) "is the amount of data that can be used to capture the map information specified by each of the selected headings, as the sum of the data amounts of the respective map information specified by the selected headings. When indicating that does not exceed, the correction of the "request headline list information (B)" is not performed.
[0037]
When the “request header list information (B)” is corrected, the “request header list information (B)” obtained by correcting the “request header list information (B)” by the computer unit 12 of the navigation device 11 is corrected. (D) "is formed. The formed “correction request heading list information (D)” has an image display section as [correction request map information] as shown in FIG. 6, for example, under the operation control by the computer section 12. 16 displays an image.
[0038]
Then, as shown as information exchange step S5 in FIG. 1, the transmission of “correction request heading list information (D)” from the navigation device 11 to the map information providing center 21 is the operation control by the computer unit 12 of the navigation device 11. Originally, it is performed through the communication unit 17 in the navigation device 11 and the communication unit 26 in the map information providing center 21.
[0039]
The “correction request heading list information (D)” transmitted from the navigation device 11 to the map information providing center 21 is captured by the computer unit 22 of the map information providing center 21. Thereafter, the computer unit 22 calculates the data amount of each piece of map information specified by each of the selected headings included in the “correction request heading list information (D)”, and the calculated data of each piece of map information. The sum of the quantity and the capture capacity that can be used for capturing each map information specified by each of the selected headers included in the “correction request header list information (D)” are compared, and the magnitude relationship between the two is compared. Is required.
[0040]
Subsequently, the computer unit 22 specifies the data amount of each piece of map information specified by each of the selected headings included in the “correction request heading list information (D)”, and each of the selected headings. A “corrected data amount relation information (E)” is formed that represents the magnitude relationship between the sum of the data amount of each map information and the capture capacity that can be used for capturing each map information specified by each of the selected headings. . Then, as shown in information exchange step S6 in FIG. 1, the transmission of “corrected data amount related information (E)” from the map information providing center 21 to the navigation device 11 is performed by the computer unit 22 of the map information providing center 21. Under the control, it is performed through the communication unit 26 in the map information providing center 21 and the communication unit 17 in the navigation device 11.
[0041]
The “corrected data amount related information (E)” transmitted from the map information providing center 21 to the navigation device 11 is taken in by the computer unit 12 of the navigation device 11 and the content thereof is, for example, as shown in FIG. The image display unit 16 displays an image as [correction request map information data amount]. In the navigation device 11, “corrected data amount related information (E)” is referred to, and the computer unit 12 changes the “corrected data amount related information (E)” based on an input operation through the input operation unit 13 by the user. According to the reference result, a state in which the correction for “correction request heading list information (D)” is performed again and a state in which the correction for “correction request heading list information (D)” is not performed are selectively performed. Be taken.
[0042]
Such further correction of “correction request heading list information (D)” is repeated as necessary.
[0043]
When correction about “request heading list information (B)” or further correction about “correction request heading list information (D)” is not performed, the computer unit 12 of the navigation device 11 makes a “map information transmission request”. Information (F) "is formed. As shown in information exchange step S7 in FIG. 1, the transmission of “map information transmission request information (F)” from the navigation apparatus 11 to the map information providing center 21 is the operation control by the computer unit 12 of the navigation apparatus 11. Originally, it is performed through the communication unit 17 in the navigation device 11 and the communication unit 26 in the map information providing center 21.
[0044]
The “map information transmission request information (F)” transmitted from the navigation device 11 to the map information providing center 21 is captured by the computer unit 22 of the map information providing center 21. Thereafter, each of the selected headings included in “request heading list information (B)” or “correction request heading list information (D)” by the computer unit 22 in accordance with “map information transmission request information (F)”. Each “map information (G)” specified by is taken out from the information database 24 and sequentially taken into the computer unit 22.
[0045]
Subsequently, as shown as information exchange step S8 in FIG. 1, the transmission of each “map information (G)” taken from the information database 24 to the computer unit 22 from the map information providing center 21 to the navigation device 11 is performed. The operation is sequentially performed through the communication unit 26 in the map information providing center 21 and the communication unit 17 in the navigation device 11 under the operation control by the computer unit 22 of the map information providing center 21.
[0046]
The “map information (G)” sequentially transmitted from the map information providing center 21 to the navigation device 11 is sequentially taken in by the computer unit 12 of the navigation device 11 and supplied to the information recording / reproducing unit 15, and the information recording / reproducing unit 15 on the compact optical disc. Thereby, in the navigation device 11, the desired information is selected from the map information that can be provided by the map information providing center 21 and transmitted through the communication unit 26 in the map information providing center 21 and the communication unit 17 in the navigation device 11. The map information is captured by the computer unit 12 so as not to exceed the capture capacity usable for the capture, and a compact optical disc on which the captured desired map information is recorded is obtained.
[0047]
Therefore, a user who uses a compact optical disk mounted on the information recording / reproducing unit 15 provided in the navigation device 11 can record map information according to an example of the information capturing method according to the present invention as described above. In the case of using a compact optical disc obtained by the above, the user is not required to prepare a compact optical disc that is a large number of information recording media with different classifications, and from one compact optical disc, Desired map information can be obtained efficiently.
[0048]
FIG. 8 shows a book including a computer unit 12, an input operation unit 13, an information recording / reproducing unit 15, an image display unit 16, and a communication unit 17, which are shown as being applied to the navigation device 11 in FIG. When the example of the map information capturing method according to the present invention is implemented by the example of the map information capturing device according to the invention, the computer unit 12 operates on the information recording / reproducing unit 15, the image display unit 16, and the communication unit 17. The flowchart performed under control is shown.
[0049]
In the flowchart shown in FIG. 8, after starting, in step 41, the map information providing center 21 is accessed through the communication unit 17. Subsequently, in step 42, it is determined whether or not “provable information header list information (A)” has arrived through the communication unit 17. As a result, if “provable information heading list information (A)” has not arrived, the determination in step 42 is repeated.
[0050]
If “providable information header list information (A)” comes as a result of the determination in step 42, “providable information header list information (A)” is fetched in step 43, and the content is displayed in the image display section. 16, the image is displayed. Next, in step 44, based on the input operation by the user through the input operation unit 13, a specific one is selected from the headings included in the “providable information heading list information (A)”, and the following step In 45, the recording data capacity of the compact optical disc in the information recording / reproducing unit 15 that can be used for recording new map information is detected.
[0051]
Subsequently, in step 46, the headline selected in step 44 is displayed, and the recording data capacity that can be used for recording new map information on the compact optical disk detected in step 45 is specified by each of the selected headlines. The “request headline list information (B)”, which is expressed as a fetch capacity usable for fetching each map information, is formed and displayed on the image display unit 16 as “request headline list information”. (B) ”is sent to the map information providing center 21 through the communication unit 17.
[0052]
Thereafter, in step 47, it is determined whether or not “data amount related information (C)” has arrived through the communication unit 17. As a result, if “data amount relation information (C)” has not arrived, the determination in step 47 is repeated.
[0053]
If “data amount relation information (C)” has arrived as a result of the determination in step 47, “data amount relation information (C)” is fetched in step 48, and the contents thereof are displayed on the image display unit 16. To be done. Next, in step 49, “data amount relation information (C)” is referred to, and it is determined whether or not the “request heading list information (B)” needs to be corrected. As a result, the “data amount related information (C)” indicates that the sum of the data amount of each piece of map information specified by each of the selected headings is taken into each piece of map information specified by each of the selected headings. If it indicates that the available capture capacity has been exceeded and “request header list information (B)” needs to be corrected, in step 50, “request header list information (B)” Then, the correction is performed to reduce the sum of the data amount of each piece of map information specified by each of the selected headings to form “correction request heading list information (D)”. In step 51, the contents of the “correction request heading list information (D)” are displayed on the image display unit 16 and the “correction request heading list information (D)” is transmitted to the map through the communication unit 17. The information is sent to the information providing center 21.
[0054]
Subsequently, in step 52, it is determined whether or not “corrected data amount relation information (E)” has arrived through the communication unit 17. As a result, if the “corrected data amount relation information (E)” has not arrived, the determination in step 52 is repeated.
[0055]
As a result of the determination in step 52, when “correction data amount relation information (E)” has arrived, in step 53, “correction data amount relation information (E)” is fetched, and the contents thereof are stored in the image display unit 16. After the image is displayed, the process returns to step 49. In step 49, the “correction data amount relation information (E)” is referred to determine whether or not the “correction request header list information (D)” needs to be corrected. The relational information (E) ”indicates that the sum of the data amount of each piece of map information specified by each of the selected headings is the amount of capture capacity that can be used for taking in each piece of map information specified by each of the selected headings. If it is indicated that it exceeds the limit and “correction request heading list information (D)” needs to be corrected, step 50 and subsequent steps are repeated.
[0056]
On the other hand, as a result of the determination in step 49, if the “request header list information (B)” or “correction request header list information (D)” need not be corrected, in step 54, “map information transmission request information” (F) ”is formed and sent to the map information providing center 21 through the communication unit 17.
[0057]
Subsequently, in step 55, it is determined whether or not “map information (G)” has arrived through the communication unit 17. As a result, if “map information (G)” has not arrived, the determination in step 55 is repeated.
[0058]
If “map information (G)” has arrived as a result of the determination in step 55, “map information (G)” is fetched in step 56, and in the subsequent step 57, the “map information (G)” G) "is supplied to the information recording / reproducing unit 15, and the information recording / reproducing unit 15 records" map information (G) "on the compact optical disc, and the process ends.
[0059]
FIG. 9 shows that the computer unit 22 of the map information providing center 21 performs operation control on the information database 24 and the communication unit 26 when the map information providing center 21 shown in FIG. The flowchart performed by is shown.
[0060]
In the flowchart shown in FIG. 9, after the start, in step 61, it is determined whether there is an access from the navigation device 11 through the communication unit 26. As a result, if there is no access from the navigation device 11, the determination in step 61 is repeated.
[0061]
If there is an access from the navigation device 11 as a result of the determination in step 61, “providable information header list information (A)” is sent to the navigation device 11 through the communication unit 26 in step 62. .
[0062]
Subsequently, in step 63, it is determined whether or not “request heading list information (B)” has arrived through the communication unit 26. As a result, if “request heading list information (B)” has not arrived, the determination in step 63 is repeated.
[0063]
If “request header list information (B)” has arrived as a result of the determination in step 63, “request header list information (B)” is fetched in step 64, and “request header list information” is received in subsequent step 65. (B) Calculates the data amount of each piece of map information specified by each of the selected headings included in “,” and calculates the sum of the calculated data amounts of each piece of map information and “request heading list information (B)”. Are compared with the capture capacities that can be used for capturing each piece of map information specified by each of the selected headings, and the magnitude relationship between the two is determined.
[0064]
Subsequently, in step 66, the data amount of each piece of map information specified by each selected headline calculated in step 65 and each selected headline determined in step 65 are specified. “Data amount relation information (C)” representing the magnitude relationship between the sum of the data amount of each map information and the take-in capacity usable for taking in each map information specified by each of the selected headings is formed. In step 67, the “data amount relation information (C)” formed in step 66 is sent to the navigation device 11 through the communication unit 26.
[0065]
Thereafter, in step 68, it is determined whether or not “correction request header list information (D)” has arrived through the communication unit 26. As a result, when “correction request heading list information (D)” arrives, “correction request heading list information (D)” is fetched in step 69, and in subsequent step 70, “correction request heading list information (D)”. ) ”Calculates the data amount of each map information specified by each of the selected headings included in“, ”and calculates the sum of the calculated data amounts of each map information and each of the selected headings. A comparison is made with the capture capacity that can be used for capturing map information to determine the magnitude relationship between the two.
[0066]
Subsequently, in step 71, the data amount of each map information specified by each selected headline calculated in step 70 and each selected headline determined in step 70 are specified. “Correction data amount relation information (E)” representing the magnitude relation between the sum of the data amount of each map information and the take-in capacity usable for taking in each map information specified by each of the selected headings is formed. In step 72, the “corrected data amount relation information (E)” formed in step 71 is sent to the navigation apparatus 11 through the communication unit 26, and the process returns to step 68. If “correction request heading list information (D)” comes as a result of the determination in step 68, the steps after step 69 are repeated.
[0067]
On the other hand, if “correction request header list information (D)” has not arrived as a result of the determination in step 68, in step 73, “correction data amount related information (E)” is indicated in step 72 in the communication unit 26. It is determined whether or not a predetermined time has elapsed after being sent to the navigation device 11 through the terminal. As a result, if the predetermined time has not elapsed, the process returns to step 68.
[0068]
As a result of the determination in step 73, when a predetermined time has elapsed after “corrected data amount relation information (E)” is sent to the navigation device 11 through the communication unit 26 in step 72, in step 74, the communication unit 26 Then, it is determined whether or not “map information transmission request information (F)” has arrived. As a result, if the “map information transmission request information (F)” has not arrived, the determination in step 74 is repeated.
[0069]
If “map information transmission request information (F)” arrives as a result of the determination in step 74, “request header list information (B)” or “correction request header list information (D)” is entered in step 75. Each “map information (G)” specified by each of the selected headings included is sequentially extracted from the information database 24 and sequentially sent to the navigation device 11 through the communication unit 26 to complete the process. .
[0070]
【The invention's effect】
As is clear from the above description, according to the map information capturing method and the map information capturing device according to the present invention, the map information arbitrarily selected from the map information that can be provided by the map information providing unit is The data is taken in according to the data take-in capacity that can be used for the take-in, and is recorded in the information recording / reproducing unit, for example, on an information recording medium that is a compact optical disc on which information can be written and read. Thereby, a map that can be provided by the map information providing unit for a user who uses the information recording medium mounted on the information reproducing unit or the information recording / reproducing unit and reproduces and uses the map information stored in the information recording medium. For example, it is possible to obtain an information recording medium in which a plurality of types of map information selected as desired information from the information are efficiently stored.
[0071]
Therefore, for example, a lot of information with different classifications for a user who uses an information recording medium such as a compact optical disc in an information reproducing unit or an information recording / reproducing unit provided in a navigation device for a vehicle. There is no need to prepare recording media, and for example, there is an advantage that a desired map information can be efficiently obtained from one information recording medium.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram used for explaining a series of information exchange according to an example of a map information capturing method according to the present invention.
FIG. 2 is a map information providing center in which a vehicle navigation apparatus to which an example of a map information capturing apparatus according to the present invention is applied, in which an example of a map information capturing method according to the present invention is applied, is communicated with the navigation apparatus; It is a block block diagram shown with it.
FIG. 3 is a diagram showing the contents of a specific example of information received by an example of a map information capturing device according to the present invention in accordance with an example of a map information capturing method according to the present invention.
FIG. 4 is a diagram showing the contents of a specific example of information transmitted by an example of a map information capturing device according to the present invention in accordance with an example of a map information capturing method according to the present invention.
FIG. 5 is a diagram showing the contents of a specific example of information received by an example of a map information capturing device according to the present invention in accordance with an example of a map information capturing method according to the present invention.
FIG. 6 is a diagram showing the contents of a specific example of information transmitted by an example of a map information capturing device according to the present invention in accordance with an example of a map information capturing method according to the present invention.
FIG. 7 is a diagram showing the contents of a specific example of information received by an example of the map information capturing device according to the present invention in accordance with an example of the map information capturing method according to the present invention.
FIG. 8 is a flowchart for explaining a control operation executed by a computer unit in an example of the map information fetching apparatus according to the present invention when an example of the map information fetching method according to the present invention is implemented.
FIG. 9 is a flowchart for explaining a control operation executed by a computer unit in a map information providing center when an example of a map information capturing method according to the present invention is implemented.
[Explanation of symbols]
11 Navigation device
12,22 Computer part
13, 23 Input operation section
14 Position detector
15 Information recording / playback unit
16, 25 Image display section
17, 26 Communication Department
18 Vehicle sensor
21 Map Information Center
30 Communication line

Claims (10)

Data fetch capacity that can be used for fetching the map information specified by the selected headline and the headline selected from the map information that can be provided by the map information providing unit by the computer unit A request heading list information representing the first step of sending to the map information providing unit through the communication unit ,
The computer section refers to the data amount relation information regarding the data amount of the map information specified by the selected heading and the usable data capture capacity sent from the map information providing unit, and the request heading correction request headline list information by performing the correction of the list information after sending to the map information providing unit, or, a modification of the request headline list information without I line, the map information of the map information delivery request information A second step of sending to the providing unit through the communication unit ;
The computer unit is, from the map information providing unit, the modification request headline list information and the map information delivery request information, or sent in response to the request headline list information and the map information delivery request information, the modified captures the map information specified by more specified heading request headline list information or the request headline list information, a third step of recording on the information recording medium in the information recording and reproducing unit,
A map information capturing method characterized by comprising : In the second step, the computer unit captures data in which the data amount relation information sent from the map information providing unit can use the data amount of the map information specified by the selected heading. when indicating that exceeds the capacity, for the request headline list information, and fixes for reducing a data amount of map information specified by the selected heading to obtain the modification request headline list information The map information capturing method according to claim 1, wherein the map information is captured. The computer unit is, in the second step, when the modification request headline list information was transmitted to the map information providing unit is identified by a specified heading by the modification request headline list information from the map information providing unit after modifying the data amount relationship information about the data volume and the available data acquisition capacity of the map information is sent, characterized in that the map information delivery request information is sent to the map information providing unit via the communication unit The map information capturing method according to claim 1 or 2. The computer unit is, in the first step, with reference to the available information headings list information representing the heading of the map information that is possible to provide transmitted from the map information providing unit, by the map information providing unit And selecting the heading for the map information, and obtaining the requested heading list information as indicating the selected heading and the data capture capacity that can be used for capturing the map information specified by the heading. The map information capturing method according to claim 1, 2, or 3. The information recording reproducing unit, the map information fetching method according to any one of claims 1 to 4, characterized in Rukoto used write and read optical disc information as the information recording medium. A heading selected from among the headings of map information that can be provided by the map information providing unit, and a request heading that represents a data capturing capacity that can be used for capturing the map information specified by the selected heading. A first means for sending list information to the map information providing unit; a data amount of map information specified by the selected heading sent from the map information providing unit; and the usable data collection. A state in which the request heading list information is corrected by referring to the data amount relation information related to the storage capacity, and the correction request heading list information is sent to the map information providing unit, and the request heading list information is not corrected. And the correction request by the second means after the request heading list information is transmitted by the first means. The map information transmission request information is transmitted to the map information providing unit in a state where the transmission list information is transmitted or in a state where the request heading list information is not corrected by the second means. From the third means and the map information providing unit, the correction request header list information and the map information transmission request information, Captures the map information specified by the header specified by the request header list information or the request header list information sent in response to the request header list information and the map information transmission request information, and records the information. A fourth means for recording on the medium;
A map information capturing device comprising: In the second means, the data amount related information sent from the map information providing unit is such that the data amount of the map information specified by the selected heading exceeds the usable data capturing capacity. If so, the correction request heading list information is obtained by correcting the request heading list information so as to reduce a data amount of map information specified by the selected heading. 6. The map information capturing device according to 6 . When the third means sends the correction request heading list information to the map information providing unit, the data amount of the map information specified by the heading specified by the correction request heading list information from the map information providing unit 8. The map according to claim 6 or 7 , wherein the map information transmission request information is transmitted to the map information providing section after the correction data amount relation information relating to the available data fetching capacity is transmitted. Information capture device. With respect to the map information, the first means refers to the provideable information heading list information that represents the heading of the map information that can be provided by the map information providing unit sent from the map information providing unit. performs selection of headings, claim 6, characterized in that to obtain the required heading list information representing the data acquisition capacity available for uptake of the map information specified by the selected headings and該見out, 7 or 8. The map information capturing device according to 8. 10. The optical disc capable of writing and reading information is used as the information recording medium on which the map information taken in by the fourth means is recorded . Map information capture device.

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