JP4777555B2 - Data transmission method, server device, recording medium, and terminal device in navigation system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for transmitting route data, guidance data, and map data provided to a navigation terminal device in a communication navigation system, a server device that stores the data, a recording medium, and a communication navigation terminal that receives the data. Relates to the device.
[0002]
[Prior art]
The communication navigation system refers to map data stored in a map database site via a computer network such as the Internet and a communication means such as a mobile communication network, a vehicle-mounted navigation device or a portable navigation device, a PDA, and a cellular phone. Navigation that guides the user to the destination by using the GPS location detection data and the map data transmitted from the server device in response to the request. A system that performs
[0003]
Such a communication navigation system has an advantage that the latest map can always be referred to due to its nature. For that purpose, when the map data of the server device is updated, the operation of reloading the map data block and keeping the map data in the latest state is required.
[0004]
A general sequence of such a communication navigation system first displays a map of the current location using a map cache, and then performs a destination search. In this case, if necessary, the destination is displayed as a map. And after performing a route search, route data, guidance data, and map data are downloaded.
[0005]
Here, the route data displays roads, the guidance data particularly displays guidance at intersections, and the map data displays a map of the surrounding area including the road on which the vehicle is traveling. Further, the route data and the guidance data are downloaded at a time when the user performs the route calculation, and the map data is downloaded in a batch or sequentially as needed.
[0006]
[Problems to be solved by the invention]
By the way, in the conventional communication navigation system as described above, when route data, guidance data, and map data are downloaded, if the memory capacity of the memory included in the communication navigation terminal device is small, all of the routes on the route from the start point to the destination are obtained. Since it is impossible to download all the data at once, there is a problem that some data is missing.
[0007]
Further, when the communication speed of the communication navigation terminal device is slow, if the batch download is performed, the waiting time until the start of traveling becomes long, which causes a problem in actual use. Note that when the map data is downloaded and acquired when necessary, it is assumed that the terminal device and the server device are always connected.
[0008]
The present invention has been made in view of the above circumstances, and a data transmission method, a server device, and a record in a communication navigation system capable of partially transmitting route data and guidance data according to the storage capacity of the communication navigation terminal device An object is to provide a medium and a communication navigation terminal device.
[0009]
  In order to achieve the above object, claim 1No naThe data transmission method in the navigation system is stored in the server device.InvitationDerived data and map dataThe endSend these data to the end deviceAnd the endNavigation is performed using position data indicating the current position of the terminal device.UnaIn the vigation system,GuidanceData andmapdataDuplicateDivide into numbersAnd a step of generating transmission data including the guidance data and map data divided into a plurality of parts, and transmitting the transmission data from the server device to the terminal device at a predetermined download point , Sending the guidance data with priority over the map dataIt is characterized by that.
[0010]
  Claim 1No naAccording to the data transmission method in the navigation system,When the guidance data and map data are divided into a plurality of pieces, and the transmission data including the divided guidance data and map data is transmitted from the server device to the terminal device at a predetermined download point, the guidance data is obtained from the map data. Send priorityByTerminal device receives guidance data required for route guidance with priority over map dataThis makes it possible to provide a highly reliable navigation system.
[0011]
  Claim 2No naA data transmission method in the vigation system is described in claim 1.The data transmission method according to claim 1, wherein the guidance data and map data divided into a plurality according to the storage capacity of the terminal device are transmittedIt is characterized by that.
[0012]
  Claim 2No naAccording to the data transmission method in the navigation system,Guidance data and map data divided into a number corresponding to the storage capacity of the terminal deviceBy being sentSince it is possible to partially transmit the guidance data and map data according to the storage capacity of the terminal device, all the guidance data and map data from the departure point to the destination are transmitted even if the storage capacity of the terminal device is small. Therefore, a highly reliable navigation system can be provided.
[0013]
  Claim 3No naA data transmission method in the navigation system is as claimed in claim 1 or 2.The data transmission method according to claim 1,SaidGuidance data and map dataBefore the server deviceNoteIt is divided into a plurality of parts corresponding to the communication speed with the terminal device.
[0014]
  Claim 3No naAccording to the data transmission method in the navigation system,Guidance data and map dataThe server deviceAnd endBy dividing into a plurality of speeds corresponding to the communication speed with the end device, the waiting time until the start of traveling can be shortened.
[0015]
  Claim 4No naA data transmission method in the vigation system is described in claim 1.The data transmission method described,in frontInvitationA plurality of derived data and map data are collected and transmitted as blocking data.
[0016]
  Claim 4No naAccording to the data transmission method in the navigation system, InvitationMultiple transmission data and map data are collected and transmitted as blocking data, so that the communication speed is slow and cannot be downloaded simultaneously.EndEven a terminal device can be used.
[0017]
  Claim 5No naThe server device in the navigation system is, InvitationDerived data and map dataThe endSend these data to the end deviceAnd the endNavigation is performed using position data indicating the current position of the terminal device.UnaIn the vigation systemA dividing unit that divides the guidance data and map data into a plurality of pieces, and a transmission data generation unit that generates transmission data including the guidance data and map data divided into a plurality of pieces. When the transmission data is transmitted to the terminal device at a predetermined download point, the guidance data is transmitted with priority over the map data.It is characterized by that.
[0018]
  Claim 5No naAccording to the server device in the navigation system,Since the guidance data and the map data are divided into a plurality of parts, and the transmission data including the divided guidance data and map data is transmitted to the terminal device at a predetermined download point, the guidance data is transmitted with priority over the map data. The terminal device can receive the guidance data necessary for route guidance preferentially over the map data, and can provide a highly reliable navigation system.
[0019]
  A recording medium according to claim 6 is the recording medium according to any one of claims 1 to 5.Guidance data and map dataIs a computer-readable recording medium on which is recorded.
[0020]
  According to the recording medium of claim 6, the recording medium according to claim 1.Guidance data and map dataCan be provided.
[0021]
  Claim 7End ofEnd device isSplit invitationDerived data and map dataSend data includingReceive these dataWhenNavigation with position data indicating current positionEndIn the end device,When obtaining the transmission data at a predetermined download point, the guidance data is received with priority over the map data.A processing means for processing is provided.
[0022]
  Claim 7ofAccording to the terminal deviceWhen receiving transmission data including divided guidance data and map data from a server device at a predetermined download point, the guidance data necessary for route guidance is received and processed in preference to the map data. A high navigation system can be provided.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the drawings.
[0024]
The embodiment described below includes a terminal device mounted on a vehicle, a server device connected to the terminal device via a network such as the Internet, and the network, and the terminal device is mounted. It is an embodiment when the present invention is applied to a navigation system that assists the movement of a vehicle.
[0025]
(I)Overall configuration and operation
First, the overall configuration and operation of the navigation system according to the embodiment will be described with reference to FIGS. 1 to 4.
[0026]
FIG. 1 is a block diagram showing the configuration of the navigation system according to the embodiment, and FIGS. 2 to 4 are flowcharts showing navigation processes executed in the navigation system.
[0027]
As shown in FIG. 1 (a), the communication navigation system S according to the embodiment uses the Internet IN using the terminal signal St as request information for requesting information to be presented to the driver and information on the current position and traveling direction of the vehicle. The terminal device St receives various information for navigation processing transmitted from the server device SV via the Internet IN as communication means in response to the request information. The terminal device T presented to the terminal device and the terminal signal St transmitted from the terminal device T via the Internet IN are received as the server signal Ssv and presented to the driver on the terminal device T based on the server signal Ssv. Performs processing as described later, including search processing for map information and the like, guidance route search processing for vehicles equipped with the terminal device T, etc. The server device SV transmits the processing result to the terminal device T as the server signal Ssv via the Internet IN.
[0028]
One server apparatus SV is configured to be able to transmit necessary map information and the like in a time-sharing manner to a plurality of terminal apparatuses T as shown in FIG. .
[0029]
Next, the detailed configuration of each component will be described.
[0030]
First, as shown in FIG. 1B, the server device SV includes a CPU 1, a display unit 2, an input unit 3, an external storage device 4 as a data storage means including a hard disk device, an interface 5, and the like. It is comprised by.
[0031]
In this configuration, the interface 5 executes a preset input interface process for the server signal Ssv input from the Internet IN, and outputs the processed server signal Sc to the CPU 1, and from the CPU 1 to the terminal device T. When a processing server signal Sc to be transmitted is transmitted, a preset output interface process is executed for the processing server signal Sc and output to the terminal device T via the Internet IN as a server signal Ssv. To do.
[0032]
Next, the external storage device 4 displays map information to be displayed on the terminal device T, various information used for route processing to be described later, and point information necessary for executing the navigation processing of the embodiment (more specifically, The location information of the point shown on the map displayed on the terminal device T and the content information of the point, etc.) and the user information which is information about the user who uses each terminal device T, etc. All the information necessary for the navigation processing executed as the navigation system is accumulated and stored, and the information is output to the CPU 1 as a memory signal Sm as necessary.
[0033]
On the other hand, CPU1 is comprised by the map output part 1a, the route process part 1b, and the search part 1c on the process.
[0034]
Then, the map output unit 1a searches the map information corresponding to the request information from the map information stored in the external storage device 4 based on the request information input as the processing server signal Sc and stores the map information. The signal Sm is read out, and is output as a processing server signal Sc to the terminal device T via the interface 5 and the Internet IN.
[0035]
In addition, the route processing unit 1b calculates and searches for a route on which the vehicle should travel based on the map information stored in the external storage device 4 based on the request information input as the processing server signal Sc. Map information including the searched route is retrieved and read out as a memory signal Sm, and this is output as a processing server signal Sc to the terminal device T via the interface 5 and the Internet IN.
[0036]
In parallel with this, the route processing unit 1b generates route guidance information necessary to guide the vehicle so that the vehicle including the terminal device T moves along the searched route. As a processing server signal Sc to the terminal device T via the interface 5 and the Internet IN.
[0037]
Further, the search unit 1c searches the location information stored in the external storage device 4 based on the request information input as the processing server signal Sc, reads it as the memory signal Sm, and reads this as the processing server signal Sc. To the terminal device T via the interface 5 and the Internet IN.
[0038]
On the other hand, when a necessary information input process is executed in the input unit 3 corresponding to these processes, the input unit 3 generates an input signal Sin corresponding to the information input process, and this input signal Sin is used as the CPU 1. Output to. Then, the CPU 1 performs a process that matches the content of the input signal Sin.
[0039]
Further, information to be presented to the operator of the server device SV when executing these processes is output to the display unit 2 as a display signal Sdp, and the display unit 2 displays information corresponding to the display signal Sdp. To do.
[0040]
Next, as shown in FIG. 1C, one terminal apparatus T includes a processing unit 10 as a processing unit including a CPU and necessary memory, a memory 11, a sensor unit 12 as a positioning member, The display unit 13, the audio output unit 14, a transmitter / receiver 15 including a mobile phone or the like, and an input unit 16 are configured. Here, the memory 11 constitutes a computer-readable recording medium of the present invention in which route data, guidance data, and map data are recorded.
[0041]
In this configuration, the transmitter / receiver 15 performs a preset input interface process on the terminal signal St input from the Internet IN, and outputs the processed terminal signal Stt to the processing unit 10. When the processing terminal signal Stt to be transmitted to the server device SV is transmitted from 10, the preset output interface processing is executed for the processing terminal signal Stt, and the terminal signal St is transmitted via the Internet IN. To the server device SV.
[0042]
Next, the sensor unit 12 is specifically mounted with the terminal device T based on position information included in GPS radio waves transmitted from a GPS (Global Positioning System) satellite launched on the satellite orbit. A GPS receiver that outputs absolute position information (absolute position information indicated by latitude and longitude) of the vehicle being operated and a so-called vehicle speed pulse transmitted along with the rotation of the wheels provided in the vehicle. It consists of a vehicle speed sensor that calculates travel distance and speed and outputs distance information and speed information, and an acceleration sensor that detects the turning angle and vertical inclination of the vehicle and outputs information about the traveling direction of the vehicle Information indicating the current position and posture of the vehicle output from these sensors and receivers is output to the processing unit 10 as a sensor signal Ssc.
[0043]
On the other hand, when the input unit 16 executes the designation for the navigation processing according to the embodiment such as the designation of the map to be displayed on the display unit 13 or the setting of the destination, the input unit 16 performs the designation. A corresponding input signal Sin is generated and output to the processing unit 10.
[0044]
Thus, the processing unit 10 generates current position information indicating the current position of the vehicle on which the terminal device T is mounted based on the sensor signal Ssc, request information corresponding to the designation executed in the input unit 16, and the like. These are output as processing terminal signals Stt to the server device SV via the transceiver 15.
[0045]
When a result corresponding to the process executed in the server device SV based on the output request information and current position information is transmitted as the processing terminal signal Stt via the Internet IN and the transceiver 15, 10 outputs the map information to be displayed included in the transmitted result to the display unit 13 as the display signal Sdp, and causes the display unit 13 to display necessary map information. In addition to the map information, the information displayed on the display unit 13 includes a route according to map information or route guidance information along the route generated by the route processing unit 1b in the server device SV described above. Information is also included.
[0046]
Further, of the route guidance information, the content to be notified to the driver of the vehicle by voice is output to the voice output unit 14 as a voice signal Sad, and the route guidance is performed by necessary voice output. .
[0047]
Further, information that should be temporarily stored, such as map information transmitted from the server device SV, is output to the memory 11 as the memory signal Sm from the processing unit 10 and temporarily stored, and then necessary. Accordingly, it is read again as the memory signal Sm and used for necessary display processing.
[0048]
Next, navigation processing executed in the navigation system S having the above-described configuration will be described with reference to FIGS. 2 to 4 mainly with respect to processing executed in the server device SV.
[0049]
First, map search processing for searching for a map to be displayed on the display unit 13 on the terminal device T will be described with reference to the flowchart shown in FIG.
[0050]
In the map search process, first, it is always monitored whether or not request information indicating a map to be displayed has been transmitted from the terminal device T (step S1), and when there is no request information (step S1; NO) On the other hand, when there is the request information (step S1; YES), the terminal device T that has transmitted the request information is the terminal device T that is authenticated on the navigation system of the embodiment. It is authenticated (step S2).
[0051]
When the authentication process is completed, the map output unit 1a searches the map information stored in the external storage device 4 based on the transmitted request information. Steps S3 and S4) When the search is completed (Step S4; YES), the searched map information is transmitted to the terminal device T (Step S5).
[0052]
At this time, during the transmission, it is always monitored whether or not all the information has been transmitted (step S6). When the transmission is not completed (step S6; NO), the transmission is continued as it is, while the necessary map is displayed. When the transmission of information is completed (step S6; YES), a series of map search processing is terminated.
[0053]
Next, route calculation processing for calculating a route for guiding a vehicle including the terminal device T will be described with reference to the flowchart shown in FIG.
[0054]
In the route calculation process, first, the starting point, destination and route conditions used for route calculation (more specifically, whether to give priority to expressways or to make sure to pass a specific road) Whether or not the request information including the request information has been transmitted from the terminal device T is constantly monitored (step S20). When the request information does not exist (step S20; NO), the process waits as it is. If there is (step S20; YES), next, it is authenticated whether or not the terminal device T that has transmitted the request information is the terminal device T authenticated on the navigation system of the embodiment (step S21). ).
[0055]
When the authentication process is completed, next, user information relating to the user who owns the terminal device T that has transmitted the request information is extracted and acquired from the external storage device 4 (step S22). Based on the destination included in the information and the acquired user information, the route processing unit 1b performs necessary route calculation processing (steps S23 and S24), and when the route calculation processing is completed (step S24). YES), the result is temporarily stored in the memory in the CPU 1 and a series of route calculation processing is terminated. The result of the route calculation process may be transmitted to the terminal device T when the process is completed, and the result may be displayed on the display unit 13 or the like.
[0056]
Further, route guidance processing for guiding a vehicle including the terminal device T along the calculated route will be described with reference to a flowchart shown in FIG.
[0057]
In the route guidance process, first, it is always monitored whether or not request information for requesting the start of route guidance has been transmitted from the terminal device T (step S25), and when there is no request information (step S25; NO) When the request information is present (step S25; YES), the terminal device T that has transmitted the request information is authenticated on the navigation system of the embodiment. It is authenticated whether it is (step S26).
[0058]
And if the said authentication process is completed, next, the user information regarding the user who owns the terminal device T which transmitted request information will be extracted and acquired from the external storage device 4 definitely (step S27), Further, in response to the request information, the route processing unit 1b performs necessary route guidance processing (steps S28 and S29). When the route guidance processing is completed (step S29; YES), a series of route guidance processing is performed. finish. The route guidance processing includes processing for acquiring current position information indicating the current position of the vehicle from the terminal device T, processing for determining whether the acquired current position is on the previously calculated route, and Processing to calculate the relationship between famous features (intersections to be turned or features to be targeted) and the current position of the vehicle on the route that will proceed in the future, and send it to the terminal device T to make the driver recognize it It is included.
[0059]
Next, information search processing for searching for information related to navigation processing, which is information to be notified to the driver on the terminal device T, will be described with reference to the flowchart shown in FIG.
[0060]
In the information retrieval process, first, it is always monitored whether or not request information indicating information to be notified has been transmitted from the terminal device T (step S10), and when there is no request information (step S10; NO). While waiting as it is, when there is the request information (step S10; YES), the terminal device T that has transmitted the request information is the terminal device T that has been authenticated on the navigation system of the embodiment. It is authenticated (step S11).
[0061]
When the authentication process is completed, the search unit 1c searches for information necessary for the information stored in the external storage device 4 based on the transmitted request information (step S12, S13) When the search is completed (step S13; YES), the searched information is transmitted to the terminal device T (step S14).
[0062]
At this time, during the transmission, it is monitored whether or not all information to be transmitted has been transmitted at all times (step S15), and when the transmission is not completed (step S15; NO), the transmission is continued as it is, When transmission of necessary map information is completed (step S15; YES), a series of information search processing is terminated.
[0063]
(II)Partial distribution of route data, guidance data and map data
[Constitution]
In the external storage device 4 of the server device SV, path data that can be divided into a plurality of pieces according to the storage capacity of the memory 11 of the terminal device T and the communication speed between the server device SV and the terminal device T and can be transmitted sequentially. , Guidance data and map data are respectively stored. A plurality of these route data, guidance data, and map data are collected and transmitted as blocking data from the server device SV to the terminal device T in response to a request from the user of the terminal device T.
[0064]
That is, a plurality of route data, guidance data, and map data stored in the external storage device 4 are collected and transmitted as blocking data so that the terminal device T is acquired by collecting necessary data.
[0065]
Therefore, in the data transmission method in the communication navigation system of this embodiment, the route data, the guidance data, and the map data stored in the external storage device 4 are divided into a plurality corresponding to the storage capacity of the memory 11 of the terminal device T. The divided route data, guidance data, and map data are sequentially transmitted from the server device SV to the terminal device T.
[0066]
[Action]
FIG. 5 is an explanatory view showing a partial distribution form of data in the present embodiment, FIG. 6 is a view showing a process of partial distribution of data in FIG. 5, and FIG. 7 is a data acquisition timing of the partial distribution process of data in FIG. It is explanatory drawing.
[0067]
As shown in FIGS. 5 and 6, when traveling from the starting point (departure point) to the destination, a data download point at the starting point (hereinafter simply referred to as a load point).
) In DP1, the user transmits a signal indicating a route calculation request to the server device SV via the terminal device T (step P1 in FIG. 6). Then, the divided route data string, guidance data string G1, and map data group M1 are downloaded from the server apparatus SV to the terminal apparatus T as blocking data (step P2). Based on the route data string, the guidance data string G1, and the map data group M1, the user travels according to the displayed road image, the guide image at the intersection, and the surrounding map image including the traveling road.
[0068]
At the load point DP2 (point A), since the guidance data string G1 and the map data group M1 downloaded at the load point DP1 are before disappearing from the memory 11 of the terminal device T, the user requests these data (step) P3). Then, the guidance data string G2 and the map data group M2 divided again from the server device SV are downloaded to the terminal device T (step P4). Then, the user travels according to the images displayed based on the guidance data string G2 and the map data group M2.
[0069]
Furthermore, at the load point DP3 (point B), since the guidance data string G2 and the map data group M2 downloaded at the load point DP2 are before disappearing from the memory 11 of the terminal device T, the user requests these data (step P5). Then, the map data group M3 to the destination divided by the terminal device T is downloaded from the server device SV (step P6). The user travels to the destination according to the surrounding map image including the traveling road displayed based on the map data group M3.
[0070]
As shown in FIG. 7, the data acquisition timing for the server device SV is determined by the server before the data (route data string, guidance data string, and map data group) guided on the user side is used up (reach the intermediate point). Request the next data from the device SV.
[0071]
Therefore, the processing unit 10 of the terminal device T sequentially receives and processes the route data sequence, the guidance data sequence, and the map data group that are divided into a plurality of pieces in order to correspond to the storage capacity of the memory 11 from the server device SV.
[0072]
[effect]
As described above, according to the data transmission method in the present embodiment, the route data, the guidance data, and the map data are divided into a plurality of parts corresponding to the storage capacity of the terminal device T, and the divided route data, guidance data, and map data are divided. By sequentially transmitting from the server apparatus SV to the terminal apparatus T, it becomes possible to partially transmit route data, guidance data, and map data according to the storage capacity of the terminal apparatus T, so the storage capacity of the terminal apparatus T is small. However, it is possible to transmit all route data, guidance data, and map data from the departure point to the destination, and a highly reliable communication navigation system can be provided.
[0073]
Further, according to the data transmission method in the present embodiment, the route data, the guidance data, and the map data are transmitted in response to a request from the terminal device T, so that the server device before the route data, the guidance data, and the map data disappear. These data can be transmitted from the SV to the terminal device T.
[0074]
Furthermore, according to the data transmission method of the present embodiment, the route data, the guidance data, and the map data are divided into a plurality of times corresponding to the communication speed between the server device SV and the terminal device T, so that the waiting time until the start of traveling is reached. Can be shortened.
[0075]
Then, according to the data transmission method in the present embodiment, a plurality of route data, guidance data, and map data are collected and transmitted as blocking data, so that the communication speed is low, and downloading is performed simultaneously using a plurality of threads. It is possible to cope with a terminal device T that cannot be used.
[0076]
According to the server apparatus SV in the present embodiment, the external storage that accumulates route data, guidance data, and map data that can be divided into a plurality of pieces corresponding to the storage capacity of the terminal apparatus T and that can be sequentially transmitted to the terminal apparatus T. Since the device 4 is provided, the route data, the guidance data, and the map data can be partially transmitted according to the storage capacity of the terminal device T. All data up to the ground can be transmitted.
[0077]
In addition, according to the terminal device T in the present embodiment, the processing unit 10 that sequentially receives and processes the route data, the guidance data, and the map data divided into a plurality of pieces in order to correspond to the storage capacity from the server device SV is provided. This makes it possible to partially receive route data, guidance data, and map data according to the storage capacity, so that all data from the starting point to the destination can be received even if the storage capacity is small. .
[0078]
The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, in the above embodiment, the Internet IN is used as the communication means. However, the present invention is not limited to this, and a communication network using a dedicated line or a public line may be used.
[0079]
In the above embodiment, a communication navigation terminal is used for the terminal device T. However, other than this, a PDA, a mobile phone, a general-purpose personal computer, various mobile terminals with a communication function, or a home appliance with a communication function, etc. Also good. And although the terminal device T was used for in-vehicle use, it can also be applied to a portable device.
[0080]
Further, in FIG. 5 and FIG. 6, the route data from the start point to the destination is downloaded from the server device SV in a lump in step P2. However, the present invention is not limited to this. Also good.
The data to be downloaded during route guidance is guidance data and map data. However, guidance data can be given if there is only guidance data, so guidance data is preferentially downloaded.
[0081]
Therefore, in the present invention, at least the route data string and the guidance data string may be divided into a plurality of pieces and transmitted sequentially from the server device SV to the terminal device T.
[0082]
【The invention's effect】
As described above, according to the data transmission method in the communication navigation system according to the present invention, the route data and the guidance data can be partially transmitted according to the storage capacity of the communication navigation terminal device. Even if the storage capacity of the device is small, all route data and guidance data from the departure point to the destination can be transmitted, and a highly reliable communication navigation system can be provided.
[0083]
Further, according to the server device in the communication navigation system according to the present invention, it is possible to partially transmit route data and guidance data according to the storage capacity of the communication navigation terminal device, so the storage capacity of the communication navigation terminal device is small. Even if it is small, it is possible to transmit all route data and guidance data from the departure point to the destination.
[0084]
Furthermore, according to the communication navigation terminal device according to the present invention, it is possible to partially receive the route data and the guidance data according to the storage capacity. Therefore, even if the storage capacity is small, all the data from the departure place to the destination can be obtained. It is possible to receive route data and guidance data.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a navigation system of an embodiment, (a) is a block diagram showing an overall configuration of the navigation system, and (b) is a block diagram showing a detailed configuration of a server device. (C) is a block diagram which shows the detailed structure of a terminal device.
FIG. 2 is a flowchart showing map search processing according to the embodiment.
FIG. 3 is a flowchart showing route processing according to the embodiment; (a) is a flowchart showing route calculation processing according to the embodiment; and (b) is a flowchart showing route guidance processing according to the embodiment.
FIG. 4 is a flowchart showing information search processing according to the embodiment.
FIG. 5 is an explanatory diagram showing a partial distribution form of data in the present embodiment.
6 is a diagram showing a partial data distribution process in FIG. 5; FIG.
7 is an explanatory diagram showing data acquisition timing of partial data distribution processing in FIG. 5; FIG.
[Explanation of symbols]
1 ... CPU
1a ... Map output part
1b Route processor
1c ... Search part
2, 13 ... display section
3, 16 ... Input section
4. External storage device (data storage means)
5 ... Interface
10: Processing unit (processing means)
11. Memory (recording medium)
12 ... Sensor part (positioning member)
14 ... Audio output section
15 ... Transceiver
S ... Navigation system
SV: Server device
T ... Terminal equipment
IN ... Internet (communication means)
St ... Terminal signal
Ssv ... Server signal
Sc: Processing server signal
Sm: Memory signal
Sin ... Input signal
Sdp: Display signal
Stt ... Processing terminal signal
Ssc: Sensor signal
Sad ... Audio signal
DP1 to DP3 ... Data download points
G1, G2 ... Guidance data string
M1 to M3 ... Map data group

Claims (7)

Sends induction data and map data that have been accumulated in the server device to the end terminal apparatus, the navigation by the position data indicating the current position in the row UNA navigation system of said end terminal device with these data,
Dividing the derived data and the map data to multiple,
Generating transmission data including the guidance data and map data divided into a plurality of parts,
The transmission data at a predetermined download points when transmitting from the server apparatus to the terminal apparatus, a data transmission method in characteristics and to Luna navigation system to send the induction data in preference to the map data. Data transmission method in a navigation system according to claim 1, wherein in response to the storage capacity and transmits the derived data and the map data is divided into a plurality of the terminal devices. The guidance data and map data, the server apparatus and before Symbol end terminal device and data transmission method in a navigation system according to claim 1 or 2, wherein in response to the communication speed, characterized in that it is divided into a plurality of. Before Ki誘 guide data and map data, data transmission method in a navigation system according to claim 1, characterized in that it is transmitted as a blocking data plural sets. Sends induction data and the map data to the end terminal apparatus, a contact Keru server device navigation row una navigation system by the position data indicating the current position of the end terminal device with these data,
A dividing means for dividing the guidance data and the map data into a plurality of parts;
Transmission data generating means for generating transmission data including the guidance data and map data divided into a plurality of parts,
When transmitting the transmission data to the terminal device at a predetermined download points, features and to salicylate over server device to transmit said derived data in preference to the map data. A computer-readable recording medium on which the guidance data and map data according to any one of claims 1 to 5 are recorded. The transmission data including the divided induction data and map data received from the server apparatus, in these data and row Cormorant end terminal apparatus navigation by the position data indicating the current position,
Wherein the transmission data when retrieving a predetermined download points, end terminal device you comprising the processing means for receiving and processing the guidance data in preference to the map data.

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