JP2002005669A - Computer-readable and rewritable recording medium, map information-updating system and navigation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the conventional problem of leading users each time map data are to be updated, etc., because map data of a recording medium with maps recorded cannot be updated in the conventional car navigation apparatuses. SOLUTION: Map data on the rewritable recording medium 2 are written and used. The map information-updating system is provided for use in the writing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium on which map data is recorded, a navigation apparatus for performing navigation using the recording medium, and a map information updating system. The present invention relates to a rewritable recording medium, a map information updating system, and a navigation device that make it possible.

[0002]

2. Description of the Related Art FIG. 12 is a block diagram showing a conventional navigation device. In the figure, 29 is a transmitting / receiving unit, 3
0 is a data processing unit, 31 is a display unit, 32 is an input unit, 33
Is an external storage unit for storing map data, 34 is a GPS (global positioning system) unit, and 35 is an updated map data storage unit.

Next, the operation will be described. In response to an input from the input unit 32 or the GPS unit 34, the data processing unit 30 acquires current position information, reads out map data including the current position from the external storage unit 33, and displays this on the display unit 31. When updated map data is transmitted from a transmitting device (not shown) and updated map data is input from the transmitting / receiving unit 29, the updated map data is stored in the updated map data storage unit 35. Next, the data processing unit 30 stores the new map data in the external storage unit 33.
When reading from the update map data storage section 35, the update map data storage section 35 is also checked.

[0004]

Since the conventional navigation device and map information updating system have been configured as described above, the map data on the external storage unit 33 cannot be updated. Therefore, when the map data is updated, a recording medium on which the new map data is recorded is obtained and used, or the updated map data storage provided separately from the external storage unit 33 as described above. Since it is necessary to store the difference data in the unit 35 and control the reading between them, there is a problem that the user is forced to bear an extra burden in any case.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is capable of updating map data on a recording medium, thereby reducing the burden on a user. It is an object to obtain a medium, a map information updating system, and a navigation device.

[0006]

A computer-readable rewritable recording medium according to the present invention is a computer-readable rewritable recording medium on which map data of a predetermined area is recorded. The area is divided into a plurality of areas, and identification data for distinguishing each area from other areas, version data, and map data are recorded in association with each other.

[0007] A map information updating system according to the present invention comprises:
In a map information updating system for setting a computer-readable rewritable recording medium on which map data of a predetermined area is recorded and writing updated map data to the rewritable recording medium, updating the predetermined area A database in which map data is recorded, a supply device that supplies the updated map data from the database, and a writing device that writes the updated map data supplied from the supply device to the rewritable recording medium. is there.

[0008] The map information updating system according to the present invention comprises:
A predetermined area is divided into a plurality of areas on the rewritable recording medium, and identification data for distinguishing each area from other areas, version data, and map data are recorded in association with each other. Version data is compared for each area, and if the version of the updated map data is newer, it is written.

[0009] The map information updating system according to the present invention comprises:
The supply device includes primary supply means for recording the updated map data on a computer-readable recording medium, and secondary supply means on which the recording medium is set and which supplies the updated map data to the writing device.

[0010] The map information updating system according to the present invention comprises:
The supply device includes a transmitter and a receiver for transmitting and receiving updated map data using a communication line, and supplies the updated map data from the receiver to the writing device.

[0011] The map information updating system according to the present invention comprises:
A supply device includes a broadcast transmitter for transmitting the updated map data using a wireless line and a broadcast receiver for receiving the updated map data, and supplies the updated map data from the broadcast receiver to the writing device.

[0012] The map information updating system according to the present invention comprises:
The broadcast transmitter periodically transmits a plurality of updated map data or a set of the latest map data.

In a navigation device according to the present invention, a computer-readable rewritable recording medium on which map data of a predetermined area is recorded is set, and desired map data is read from the rewritable recording medium and displayed. The navigation device includes an input device for inputting update map data of a predetermined area, and a writing device for writing the update map data output from the input device to the rewritable recording medium.

[0014] In the navigation apparatus according to the present invention, the input device includes a reading section for reading data from a computer-readable recording medium on which the updated map data is recorded, and from the reading section, the updated map data of a predetermined area is input. Things.

[0015] In the navigation device according to the present invention, the input device includes a receiving unit that receives the updated map data, and the updated map data of a predetermined area is input from the receiving unit.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1 FIG. FIG. 1 is a system configuration diagram showing a car navigation terminal (navigation device) and a map information updating system according to Embodiment 1 of the present invention. In the figure, 1 is a car navigation terminal (navigation device), 2 is a map information recording medium (rewritable recording medium) which can be loaded into the car navigation terminal 1 and has map data recorded thereon in a rewritable manner; A personal computer (primary supply means) 4, a map information recording medium 2 can be loaded, and a rewriting unit (writing device) for writing map data output from the personal computer 3 to the map information recording medium 2; A map update server (database) for holding the entire map data, 6 is a wide area network such as the Internet for connecting the personal computer 3 and the map update server 5, and 7 is a device on which updated map data is recorded and can be loaded into the personal computer 3. An updated map data recording medium.

FIG. 2 is a block diagram showing a configuration of the car navigation terminal 1 according to Embodiment 1 of the present invention.
In the figure, reference numeral 8 denotes a display, 9 denotes an input operation unit for inputting various settings and the like, and 10 reads map data from a predetermined map information recording medium 2 in response to an input from the input operation unit 9 and the like. Is a map display / operation unit that displays on the display 8.

FIG. 3 is a data structure explanatory diagram showing a map data structure of the map information recording medium 2 according to the first embodiment of the present invention. FIG. 1A shows a divided structure diagram of map information stored in the map information recording medium 2, and FIG. 1B shows a detailed data structure of each area. As shown in the figure, the map information recording medium 2 stores a map of a predetermined area divided into a number of (36 in the figure) areas, and furthermore, a version number and a number for each area. The partial map area identifier is stored in association with the partial map area identifier.

Next, the operation will be described. When the map information recording medium 2 is loaded and predetermined information is input from the input operation unit 9, the car navigation terminal 1 responds to, for example, current position information from a GPS (global positioning system) (not shown). The map data of the area including the current position is read out and displayed on the display 8. If the current position is out of the range of the displayed map data due to the movement, the map data of the area including the current position is newly read and displayed on the display 8. Further, a route guidance display or the like is performed based on the target position data input in advance.

Next, the update processing of the map data will be described. When updating the map data, the map information recording medium 2 is loaded into the rewriting unit 4 and the personal computer 3 is started. Then, by accessing the map update server 5 of the supply source of the map information recording medium 2 via the wide area network 6 or by loading the update map data storage medium 7 of the supply source into the personal computer 3, The updated map data is stored in. When a write instruction is issued to the personal computer 3 in this state, the updated map data is output from the personal computer 3 to the rewriting unit 4, and the rewriting unit 4 searches for map data corresponding to the updated map data. And if the updated map data has a newer version, an overwrite process is performed on the map data. At this time, the version information is also updated.

FIG. 4 is an explanatory diagram for explaining map data updating processing of the map information recording medium 2 according to the first embodiment of the present invention. In the figure, 11 is a map information recording medium 2
, 12 is updated map data,
13 is updated map data. Then, as shown in FIG.
When the map 2 and the map 33 are version 2 and the map 9 and the map 22 are version 3, as for the updated map data, only a part of the updated map data of the version 3, that is, only the map 9 and the map 22, are updated.

As described above, according to the first embodiment, the database 5 in which the updated map data of the predetermined area is recorded, the personal computer 3 that reads the updated map data from the database 5, and the personal computer Since the rewriting unit 4 for writing the updated map data supplied from 3 into the map information recording medium 2 constitutes a map information updating system, new map data is recorded each time the version of the map data is upgraded. There is no need to obtain a recording medium or to perform complicated reading control between the external storage unit and the updated map data storage unit as in the related art, and an extra burden is imposed on the user for such control. There is an effect that is not forced.

According to the first embodiment, a rewritable recording medium is used as the map information recording medium 2 on which map data of a predetermined area is recorded, and the predetermined area is divided into a plurality of areas. Since the partial map area identifier for distinguishing each area from other areas, the version information, and the map data are recorded in association with each other, the personal computer 3 and the rewriting unit 4 store the version of the map data for each area. Can be compared and updated. The map data can be updated without updating the entire map data one by one, and there is an effect that writing can be performed efficiently.

Embodiment 2 FIG. FIG. 5 is a system configuration diagram showing a car navigation terminal (navigation device) and a map information updating system according to Embodiment 2 of the present invention. In the figure, 14 is a car navigation terminal,
Reference numeral 15 denotes a map update information recording medium which is loaded into the car navigation terminal 14 and in which map data is recorded in a writable manner. Reference numeral 16 denotes a map update information recording medium 15 which can be loaded and stores map data output from the personal computer 3. It is a rewriting unit (writing device) for writing on the map update information recording medium 15.

FIG. 6 is a block diagram showing a configuration of the car navigation terminal 14 according to the second embodiment of the present invention. In the figure, reference numeral 17 denotes a map update data input unit (secondary supply means, which is loaded with a map update information recording medium 15 and reads out update map data from the map update information recording medium 15).
Input device, reading unit) and 18 are map data update processing units (writing devices) for writing the updated map data read by the map update data input unit 17. The other configuration is the same as that of the first embodiment, and the description is omitted.

Next, the operation will be described. When a write instruction is issued while the updated map data is stored on the personal computer 3, the updated map data is output from the personal computer 3 to the rewriting unit 16, and the rewriting unit 16 stores the updated map data in the map update information recording medium 15. Record to.

Next, the map update information recording medium 15 is loaded into the car navigation terminal 14, the map update data input section 17 reads out the updated map data from the map update information recording medium 15, and the map data update processing section 18 The map data corresponding to the updated map data is searched, and the version information is compared with each other. If the updated map data has a newer version, the map data is overwritten.
At this time, the version information is also updated. Other operations are the same as those in the first embodiment, and a description thereof will be omitted.

As described above, according to the second embodiment, the rewriting unit 16 is
Is written into the map update information recording medium 15, and the map data update processing unit 18 writes the updated map data read from the map update information recording medium 15 into the map information recording medium 2. Even if the rewritable map information recording medium 2 is fixedly arranged in the car navigation terminal 14, there is an effect that this map data can be updated and the map data can be updated.

According to the second embodiment, the car navigation terminal 14 has the map update data input unit 17 for reading the updated map data from the map update information recording medium 15 and the updated map read by the map update data input unit 17. Since the map data update processing unit 18 for writing data to the map information recording medium 2 is provided, it is necessary to perform complicated reading control between the external storage unit and the updated map data storage unit, for example, as in the related art. There is an effect that no extra burden is imposed on the user for such control and the like.

Embodiment 3 FIG. 7 is a system configuration diagram showing a car navigation terminal (navigation device) and a map information updating system according to Embodiment 3 of the present invention. In the figure, 19 is a car navigation terminal, 20 is a map database (database) holding map data, 21 is a map update server that outputs map data of the entire predetermined area from the map database 20 on demand, and 22 is a map update server. This is a map update data communication facility (transmitter) that wirelessly transmits the map data output by the map update server 21 through a dedicated line such as a wireless telephone line.

FIG. 8 is a block diagram showing a configuration of a car navigation terminal 19 according to Embodiment 3 of the present invention. In the figure, reference numeral 23 denotes a receiving antenna (receiver, broadcast receiver, input device, receiving unit), and 24 denotes data for receiving map data wirelessly transmitted from the map update data communication equipment 22 using the receiving antenna 23. It is a communication transmitting / receiving unit (receiver, input device, receiving unit). The other configuration is the same as that of the second embodiment, and the description is omitted.

Next, the operation will be described. Input operation unit 9
When an instruction to update the map information is input from, the map display / operation unit 10 wirelessly transmits the information via the data communication transmitting / receiving unit 24 and the receiving antenna 23. The map update data communication equipment 22 receives the wireless communication, and
1 to output the update request.

In response to this update request, the map update server 21 reads out the map data of the area corresponding to the request and outputs it to the map update data communication equipment 22. The map update data communication equipment 22 transmits the data to the data communication transceiver. 24. Each map data received by the data communication transmission / reception unit 24 is input to the map update data input unit 17, and the map data update processing unit 18 compares the versions for each region and updates the map input from the map update data input unit 17. If the version of the map data is newer, an overwrite process is performed on the map data. At this time, the version information is also updated. Other operations are the same as those in the second embodiment, and a description thereof will be omitted.

As described above, according to the third embodiment, the updated map data is transmitted from the map update data communication equipment 22 to the data communication transmission / reception unit 24, and the map data update processing unit 18 Since the updated map data is output to the car navigation terminal 1, even if the rewritable map information recording medium 2 is fixedly arranged in the car navigation terminal 1, the map data can be updated without providing secondary supply means or the like. There is an effect that the map data can be updated.

According to the third embodiment, the car navigation terminal 19 is provided with the receiving antenna 23, the data communication transmitting / receiving unit 24, the map update data input unit 17, and the map data update processing unit 18, so that, for example, As described above, there is no need to perform complicated reading control between the external storage unit and the updated map data storage unit, and there is an effect that no extra burden is imposed on the user for such control and the like.

Embodiment 4 FIG. FIG. 9 is a system configuration diagram showing a car navigation terminal (navigation device) and a map information updating system according to Embodiment 4 of the present invention. In the drawing, reference numeral 25 denotes a map update server which periodically outputs map data of a predetermined area from the map database 20, and 26 denotes map update data which wirelessly broadcasts the map data output from the map update server 25 through a wireless broadcast line or the like. A broadcasting facility (broadcasting transmitter) 27 is a car navigation terminal that receives the radio broadcast.

FIG. 10 is a block diagram showing a configuration of a car navigation terminal 27 according to Embodiment 4 of the present invention. In the figure, reference numeral 28 denotes a broadcast data receiving unit (broadcast receiver,
Input device, receiving unit). The other configuration is the same as that of the third embodiment, and the description is omitted.

Next, the operation will be described. When the map update server 25 periodically outputs the map data of the entire predetermined area from the map database 20 at a predetermined cycle, the map update data broadcasting equipment 26 sequentially broadcasts each map data by radio, and the broadcast data receiving unit 28 The map data of a predetermined area is received sequentially and repeatedly. FIG. 11 is an explanatory diagram for explaining an example of the broadcast cycle. In the figure, the map data of each area composed of the areas 1 to 6 is periodically broadcast as map update data in the order of arrows.

Each updated map data received by the broadcast data receiving unit 28 is input to the map data update processing unit 18 via the map update data input unit 17, and the map data update processing unit 18 The corresponding map data is searched, the version information is further compared, and if the updated map data has a newer version, an overwrite process is performed on the map data. At this time, the version information is also updated. Other operations are the same as those in the third embodiment, and a description thereof will be omitted.

As described above, according to the fourth embodiment, the updated map data of a predetermined area is broadcasted from the map update data broadcasting equipment 26, received by the broadcast data receiving unit 28, and input into the map update data. Since the map data update processing unit 18 writes the updated map data into the map information recording medium 2 via the unit 17, complicated read control between the external storage unit and the updated map data storage unit is performed, for example, as in the related art. This eliminates the need to perform such operations, and thus has the effect of not imposing an extra burden on the user for such control and the like.

According to the fourth embodiment, since a plurality of sets of updated map data are broadcast periodically, for example, the rewritable map information recording medium 2 is fixedly arranged in the car navigation terminal 27, and Is updated, map data can be updated without using a dedicated receiver or the like, and the map data can be updated.

[0042]

As described above, according to the present invention, a computer-readable rewritable recording medium on which map data of a predetermined area is recorded, wherein the predetermined area is divided into a plurality of areas. Since the identification data for distinguishing each region from other regions, the version data, and the map data are recorded in association with each other, the map information updating system compares the version data of the map data for each region. And can be updated. Therefore, when the map data is updated, the map data can be updated by updating only the data. For example, a complicated operation between the external storage unit and the updated map data storage unit as in the related art is required. Thus, there is no need to perform any read control, and there is an effect that no extra burden is imposed on the user for such control and the like.

According to the present invention, a computer-readable rewritable recording medium on which map data of a predetermined area is recorded is set, and map information updating for writing updated map data to the rewritable recording medium is performed. In the system, a database in which the update map data of the predetermined area is recorded, a supply device that supplies the update map data from the database, and the update map data supplied from the supply device are stored in the rewritable recording medium. Since a writing device is provided, it is not necessary to perform complicated read control between the external storage unit and the updated map data storage unit as in the related art, and an extra user is required for such control. It has the effect of not imposing a heavy burden.

According to the present invention, a predetermined area is divided into a plurality of areas on the rewritable recording medium, and identification data for distinguishing each area from other areas, version data, map data, and the like. The writing device compares the version data for each area, and writes the updated map data if the version is newer, so that the map data is updated without updating the entire map data one by one. And writing can be performed efficiently.

According to the present invention, the supply device comprises a primary supply means for recording the updated map data on a computer-readable recording medium, and a secondary supply means for setting the recording medium and supplying the updated map data to the writing device. Since the supply means is provided, even if the rewritable recording medium is fixedly arranged in the navigation device, there is an effect that the map data is updated and the map data is updated.

According to the present invention, the supply device includes the transmitter and the receiver for transmitting and receiving the updated map data using the communication line, and supplies the updated map data from the receiver to the writing device. Even if the possible recording medium is fixedly arranged in the navigation device, there is an effect that the map data can be updated and the map data can be updated to the latest without providing a secondary supply means or the like.

According to the present invention, the supply device includes the broadcast transmitter for transmitting the updated map data using the radio line and the broadcast receiver for receiving the updated map data, and updates the broadcast receiver to the writing device from the broadcast receiver. Since the map data is supplied, even if the rewritable recording medium is fixedly arranged in the navigation device, the map data is updated without updating the map data without providing a secondary supply means, etc. There is an effect that can be.

According to the present invention, since the broadcast transmitter periodically transmits a plurality of updated map data or the latest set of map data, for example, a rewritable recording medium is fixedly arranged in the navigation device and Is updated, it is possible to update the map data without using a special line-dedicated receiver or the like so that the map data can be updated.

According to the present invention, a navigation device for setting a computer-readable rewritable recording medium on which map data of a predetermined area is recorded, and reading and displaying desired map data from the rewritable recording medium , An input device for inputting update map data of a predetermined area, and a writing device for writing the update map data output from the input device to the rewritable recording medium, so that separately from the recording medium, The map data can be updated without using the second recording medium that stores the updated map data. Therefore, when the map data is updated, it is not necessary to perform complicated reading control between the external storage unit and the updated map data storage unit as in the related art, for example. This has the effect of not imposing an extra burden.

According to the present invention, the input device includes the reading section for reading data from the computer-readable recording medium on which the updated map data is recorded, and the updated map data of a predetermined area is input from the reading section. Even if the rewritable recording medium is fixedly arranged in the navigation device, there is an effect that the map data can be updated and the map data can be updated.

According to the present invention, the input device includes the receiving unit for receiving the updated map data, and the updated map data of a predetermined area is input from the receiving unit. Even if the map data is fixedly arranged, there is an effect that the map data can be updated and the map data can be updated.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing a car navigation terminal (navigation device) and a map information updating system according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a car navigation terminal according to Embodiment 1 of the present invention.

FIG. 3 is a data structure explanatory diagram showing a map data structure of a map information recording medium according to Embodiment 1 of the present invention.

FIG. 4 is an explanatory diagram for explaining map data updating processing of the map information recording medium according to the first embodiment of the present invention;

FIG. 5 is a system configuration diagram showing a car navigation terminal and a map information updating system according to a second embodiment of the present invention.

FIG. 6 is a block diagram showing a configuration of a car navigation terminal according to Embodiment 2 of the present invention.

FIG. 7 is a system configuration diagram showing a car navigation terminal and a map information updating system according to Embodiment 3 of the present invention.

FIG. 8 is a block diagram showing a configuration of a car navigation terminal according to Embodiment 3 of the present invention.

FIG. 9 is a system configuration diagram showing a car navigation terminal and a map information updating system according to Embodiment 4 of the present invention.

FIG. 10 is a block diagram showing a configuration of a car navigation terminal according to Embodiment 4 of the present invention.

FIG. 11 is an explanatory diagram illustrating an example of a broadcast cycle.

FIG. 12 is a device configuration diagram showing a conventional navigation device.

[Explanation of symbols]

1 car navigation terminal (navigation device),
2 map information recording medium (rewritable recording medium), 3
Personal computer (primary supply means), 4 rewriting unit (writing device), 5 map update server (database), 6 wide area network, 7 updated map data recording medium, 8 display, 9 input operation unit, 10 map display / operation unit, 11 map data, 12 updated map data, 13 updated map data, 14 car navigation terminal, 15 map update information recording medium, 16 rewriting unit (writing device), 17 map update data input section (secondary supply means, input device) , Reading unit), 18 map data update processing unit (writing device), 19 car navigation terminal, 20 map database (database), 21 map update server, 22 map update data communication equipment (transmitter), 23 receiving antenna (receiver) , Broadcast receiver, input device, receiver), 24 data Transmission / reception unit (receiver, input device, reception unit), 25 map update server, 26 map update data broadcasting equipment (broadcast transmitter),
27 Car navigation terminal, 28 Broadcast data receiver (broadcast receiver, input device, receiver).

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C032 HB11 HC08 2F029 AA02 AB07 AC02 AC14 5B082 AA13 EA07 GA14 5H180 AA01 BB04 BB11 FF05 FF22 FF27 FF32

Claims (10)

[Claims] 1. A computer-readable rewritable recording medium on which map data of a predetermined area is recorded, wherein the predetermined area is divided into a plurality of areas, and each area is distinguished from other areas. Computer-readable rewritable recording medium in which identification data, version data, and map data are recorded in association with each other. 2. A map information updating system in which a computer-readable rewritable recording medium on which map data of a predetermined area is recorded is set, and updated map data is written to the rewritable recording medium. A database in which updated map data of a predetermined area is recorded, a supply device for supplying the updated map data from the database, and a writing device for writing the updated map data supplied from the supply device to the rewritable recording medium A map information update system comprising: 3. A predetermined area is divided into a plurality of areas on a rewritable recording medium, and identification data for distinguishing each area from other areas, version data, and map data are recorded in association with each other. 3. The map information updating system according to claim 2, wherein the writing device compares the version data for each area, and writes the updated map data when the version is newer. 4. A supply device comprising: primary supply means for recording updated map data on a computer-readable recording medium; and secondary supply means on which the recording medium is set and for supplying the updated map data to a writing device. The map information updating system according to claim 2 or 3, wherein the map information updating system is provided. 5. A supply device comprising a transmitter and a receiver for transmitting and receiving updated map data using a communication line, and supplying the updated map data from the receiver to the writing device. The map information updating system according to claim 3. 6. A supply device includes a broadcast transmitter for transmitting updated map data using a wireless line and a broadcast receiver for receiving the updated map data, and supplies the updated map data from the broadcast receiver to the writing device. The map information updating system according to claim 2 or 3, wherein the map information is updated. 7. The map information updating system according to claim 6, wherein the broadcast transmitter periodically transmits a plurality of updated map data or a set of the latest map data. 8. A navigation device which sets a computer-readable rewritable recording medium on which map data of a predetermined area is recorded, reads desired map data from the rewritable recording medium, and displays the map data. A navigation device comprising: an input device to which updated map data of a region is input; and a writing device that writes the updated map data output from the input device to the rewritable recording medium. 9. The input device includes a reading unit that reads data from a computer-readable recording medium on which updated map data is recorded, and from which the updated map data of a predetermined area is input. The navigation device according to claim 8. 10. The navigation device according to claim 8, wherein the input device includes a receiving unit that receives the updated map data, and receives the updated map data of a predetermined area from the receiving unit.