JPH07253327A - Navigation system, in-vehicle navigation device and portable navigation device - Google Patents

Abstract

(57) [Abstract] [Purpose] A portable navigation device and a vehicle-mounted navigation device are connected to exchange information and share a GPS receiver. [Configuration] A vehicle-mounted navigation device 100 having a map storage unit 4 for storing a road map and a display unit 6 for displaying a road map, and GP receiving a signal radio wave from a satellite.
A GPS receiver 11 that performs S positioning and a display 12 that displays the GPS positioning result are provided, and a vehicle-mounted navigation device 100 and a portable navigation device 200 that can be connected via a communication line 300 are provided. Information is transmitted and received between the navigation device 100 for portable use and the portable navigation device 200 via the communication line 300, and the display means 6 of the in-vehicle navigation device 100 displays the GPS positioning result obtained from the portable navigation device 200 on the road map. Display on top.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a GPS navigation navigation system, a vehicle-mounted navigation device and a portable navigation device.

[0002]

2. Description of the Related Art There is known a GPS navigation device which receives GPS signals transmitted from a plurality of satellites and calculates the current position by GPS navigation. This GPS navigation device is classified into a portable type and an in-vehicle type. FIG. 6 is a functional block diagram showing the configuration of a conventional vehicle-mounted navigation device, and FIG. 7 is a functional block diagram showing the configuration of a conventional portable navigation device. The vehicle-mounted navigation device includes a GPS receiver 1, a vehicle speed sensor 2, a direction sensor 3, a CD-ROM 4, a route calculator 5, a display device 6, a control unit 7, an operation unit 8, and a memory 9. The GPS receiver 1 receives signal radio waves from satellites and performs positioning by GPS navigation,
Detect running speed etc. In addition, the route calculator 5 calculates the traveling locus of the vehicle based on the traveling distance detected by counting the vehicle speed pulses from the vehicle speed sensor 2 and the traveling azimuth detected by the azimuth sensor 3, and the traveling locus Map matching is performed by collating with the road map data stored in the CD-ROM 4, and the current position of the vehicle is detected by so-called self-contained navigation. That is, the in-vehicle navigation device guides the route by GPS navigation and self-contained navigation.

On the other hand, the portable navigation device is a GP
The S receiver 11, the display device 12, the control unit 13, the operation unit 14, and the memory 15 are provided. As described above, the GPS receiver 11 receives signal radio waves from satellites, performs positioning by GPS navigation, and detects the current position and the like. However, since this portable navigation device does not have a vehicle speed sensor, a direction sensor, a CD-ROM, and a route calculator, it cannot perform route guidance by the self-contained navigation unlike the above-described vehicle-mounted navigation device.
In addition, since a portable navigation device generally does not have road map data, the current position cannot be displayed on the road map, and the current position detected by GPS positioning is displayed on the display device 12 as a numerical value of latitude and longitude. There is.

[0004]

However, the conventional vehicle-mounted navigation device has many functions such as a GPS navigation function, a route calculation function, a self-contained navigation function, a road map storage function, and a map display function. Can only be used at times. On the other hand, the portable navigation device can be used even when the user is not in the vehicle, but since it generally does not have road map data, the positioning result by GPS navigation cannot be displayed superimposed on the road map. The current position must be confirmed by the latitude and longitude of. Further, when inputting the destination to the portable navigation device, it is necessary to confirm the longitude and latitude of the destination in the road map book and input the longitude and latitude. Therefore, both an on-vehicle navigation device and a portable navigation device may be owned, but such a thing is uneconomical.

An object of the present invention is to connect a portable navigation device and a vehicle-mounted navigation device to exchange information, and share a GPS receiver.

[0006]

The invention according to claims 1 to 3 will be described with reference to FIG. 1 showing an embodiment. The invention according to claim 1 is a map storage means 4 for storing a road map and a road. A vehicle-mounted navigation device 100 having a display unit 6 for displaying a map and a GPS by receiving signal radio waves from satellites.
It has a GPS receiver 11 for positioning and a display 12 for displaying the GPS positioning result, and is equipped with a vehicle-mounted navigation device 100 and a portable navigation device 200 connectable via a communication line 300. Information is exchanged between the navigation device 100 and the portable navigation device 200 via the communication line 300, and the GPS positioning result obtained from the portable navigation device 200 by the display means 6 of the vehicle-mounted navigation device 100 is displayed on the road map. By displaying the above, the above-mentioned object is achieved. The invention of claim 2 is a map storage means 4 for storing a road map.
A distance detecting means 2 for detecting the traveling distance of the vehicle, an azimuth detecting means 3 for detecting the traveling azimuth of the vehicle, a road map stored in the map storage means 4, and a traveling detected by the distance detecting means 2. The calculation means 5 for calculating the current position of the vehicle by self-contained navigation based on the distance and the traveling direction detected by the direction detection means 3 and the road map read out from the map storage means 4 are displayed and on the road map. And a display means 6 for superimposing and displaying the current position calculated by the calculation means 5 on the vehicle-mounted navigation device 100.
And a GPS receiver 11 that receives a signal radio wave from a satellite and performs positioning by GPS navigation, and a display 12 that displays the GPS positioning result. The in-vehicle navigation device 100 and a communication line 300 are used. A portable navigation device 200 that can be connected is provided, and information is transmitted and received between the in-vehicle navigation device 100 and the portable navigation device 200 via a communication line 300. The above-mentioned object is achieved by determining the current position of the vehicle based on the GPS positioning result obtained from the navigation device 200 and the calculation result by the self-contained navigation. According to the invention of claim 3, the vehicle-mounted navigation device 100 is provided with the route calculation means 5 for calculating the optimum route to the destination, and the display means 6 displays the optimum route calculated by the route calculation means 5 on the road map. It was done like this. The invention of claim 4 will be described with reference to FIG. 5 showing a modified example of the embodiment. According to the invention of claim 4, data for bidirectionally converting the data format of the information of the vehicle-mounted navigation device and the portable navigation device. The conversion means 402 is provided in the vehicle-mounted navigation device 400. The invention of claim 5 will be described with reference to FIG. 1 showing an embodiment. The invention of claim 5 includes a map storage means 4 for storing a road map and a display means 6 for displaying the road map. It is applied to a vehicle-mounted navigation device, and is provided with communication means 101 for exchanging information with a portable navigation device 200 having a GPS receiver 11 via a communication line 300. Two
The above-mentioned object is achieved by displaying the GPS positioning result obtained from the GPS receiver 11 of 00 through the communication means 101 on the road map. FIG. 5 shows a modification of the embodiment.
When the invention of claim 6 is described in association with the above, the vehicle-mounted navigation device of claim 6 includes a data conversion unit 402 for bidirectionally converting the data format of information of the vehicle-mounted navigation device and the portable navigation device. It is the one. The invention of claim 7 will be described with reference to FIG. 1 showing an embodiment. In the invention of claim 7, signal radio waves from a satellite are received to perform positioning by GPS navigation.
It is applied to a portable navigation device equipped with a PS receiver 11 and a display 12 for displaying the GPS positioning result, and a communication line 3 with the in-vehicle navigation device 100.
The above-described object is achieved by including the communication unit 201 that transmits and receives information via 00.

[0007]

According to the navigation system of the present invention, information is transmitted and received between the on-vehicle navigation device and the portable navigation device via a communication line, and the road map is displayed on the display means of the on-vehicle navigation device. The GPS positioning result obtained from the portable navigation device is displayed on. As a result, various kinds of information can be mutually used between the vehicle-mounted navigation device and the portable navigation device. Further, the GPS receiver can be shared by the vehicle-mounted navigation device and the portable navigation device, and an inexpensive navigation system can be constructed. In the navigation system according to claim 2, information is transmitted and received between the on-vehicle navigation device and the portable navigation device via a communication line, and the GPS positioning result and the calculation result by the self-contained navigation are obtained from the portable navigation device. Based on this, the current position of the vehicle is determined. As a result, information can be mutually used between the vehicle-mounted navigation device and the portable navigation device, and the GPS receiver is shared by the vehicle-mounted navigation device and the portable navigation device to build an inexpensive navigation system. can do. Also, GP
Accurate current position can be calculated by S navigation and self-contained navigation. In the navigation system according to claim 3,
Calculate the optimum route to the destination and display it on the road map. As a result, route guidance is performed based on the optimum route information to the destination obtained from the in-vehicle navigation device when the portable navigation device is used alone, without providing the portable navigation device with map storage means or route calculation means. You can In the navigation system according to the fourth aspect, the data formats of the information of the vehicle-mounted navigation device and the portable navigation device are bidirectionally converted. As a result, any type of vehicle-mounted and portable navigation device can communicate with each other, and many general-purpose portable navigation devices can be connected to the vehicle-mounted navigation and used. In the vehicle-mounted navigation device according to the fifth aspect, information is exchanged with the portable navigation device via the communication means, and the GPS positioning result is obtained from the GPS receiver of the portable navigation device and displayed on the road map. As a result, various kinds of information of the portable navigation device can be used by the in-vehicle navigation device. In addition, GP for car navigation devices
The GPS positioning result can be input without installing the S receiver, and the cost of the vehicle-mounted navigation device can be reduced. In the vehicle-mounted navigation device according to the sixth aspect, the data formats of the information of the vehicle-mounted navigation device and the portable navigation device are bidirectionally converted. This allows
It becomes possible to communicate with any type of portable navigation device, and many general-purpose portable navigation devices can be used by connecting them to in-vehicle navigation. In the portable navigation device according to the seventh aspect, information is exchanged with the in-vehicle navigation device via the communication means. Thereby, various information of the vehicle-mounted navigation device can be used in the portable navigation device.

Incidentally, in the section of means and action for solving the above problems for explaining the constitution of the present invention, the drawings of the embodiments are used for the purpose of making the present invention easy to understand. It is not limited to.

[0009]

FIG. 1 is a functional block diagram showing the structure of an embodiment. It should be noted that devices similar to those shown in FIGS. 6 and 7 are designated by the same reference numerals, and differences will be mainly described. This GPS navigation system is composed of an in-vehicle device 100 mounted in a vehicle and a portable device 200 that is attachable to and detachable from the in-vehicle device 100. In the in-vehicle device 100,
The vehicle speed sensor 2 is attached to, for example, a transmission and generates a predetermined number of pulse signals per one revolution of the speedometer pinion. The traveling speed of the vehicle can be detected by detecting the number of pulses per unit time or the pulse cycle generated from the vehicle speed sensor 2, and the traveling distance of the vehicle can be detected by counting the number of pulses.
The azimuth sensor 3 detects the turning angular velocity of the vehicle with a gyroscope, and can detect the turning angle of the vehicle, that is, the traveling azimuth based on the turning angular velocity. The CD-ROM 4 is a storage device that stores road map data. The storage medium of the road map data is not limited to the CD-ROM.
The route calculator 5 detects the traveling distance detected based on the pulse signal from the vehicle speed sensor 2, the traveling direction detected based on the turning angular velocity signal from the direction sensor 3, and the CD-
The position of the vehicle is calculated by self-contained navigation based on the road map data around the vehicle read from the ROM 4, and the optimum route to the set destination is calculated. The display device 6 superimposes and displays the current position of the vehicle, the destination, the route to the destination, etc. on the road map. The control unit 101 is a unit that controls the operation of the entire in-vehicle device, and includes the operation unit 8 and the memory 9 in addition to the devices 2 to 6 described above.
Are connected.

On the other hand, in the portable device 200, the GPS receiver 11 receives GPS signals transmitted from satellites,
The GPS position calculation is performed to calculate the current position and the like. The display device 12 displays the current position calculated by the GPS receiver 11 in latitude and longitude. Control unit 201
Is a unit for controlling the operation of the entire portable device, and is connected with the operation unit 14 and the memory 15 in addition to the devices 11 and 12 described above. The portable device 200 operates as a portable GPS navigation device when removed from the vehicle-mounted device 100.

Control unit 10 of in-vehicle device 100
1 can communicate with the control unit 201 of the portable device 200 via the data link 300 to exchange data. The vehicle-mounted device 100 is not equipped with a GPS receiver and can only guide the route by self-contained navigation.
Therefore, normally, when using the in-vehicle device 100, the portable device 200
Is mounted, and various GPS positioning data are obtained from the GPS receiver 11 of the portable device 200 to guide the route by self-contained navigation and GPS navigation.

FIG. 2 is a flowchart showing the transfer operation of GPS positioning data. In step S1, the GPS receiver 11 of the portable device 200 causes the GPS from the satellite to be received.
GPS signal positioning is performed by receiving signal radio waves, and the following step S
In step 2, the control unit 201 converts the data of the GPS positioning result into a data format readable by the in-vehicle device 100, and transfers the data to the control unit 101 of the in-vehicle device 100 via the data link 300. Step S3
Then, the GPS positioning data is collated with the road map data stored in the CD-ROM 6 by the control unit 101 of the vehicle-mounted device 100, and the road map is displayed on the display device 6 and the road map is displayed on the road map in the subsequent step S4. The own vehicle position of the GPS positioning result is superimposed and displayed.

Further, similar to the above-mentioned GPS positioning data transfer operation, position data such as a registration place stored in the memory 15 when the portable device 200 is used alone is converted into the data format of the in-vehicle device 100 and is transferred to the in-vehicle device 100. It can be transferred and displayed on the road map of the display device 6 to confirm the position, or can be stored as position data in the memory 9 of the in-vehicle device 100. The position data of the portable device 200 can be set in the in-vehicle device 100. It can be used in the same way as data. On the contrary, the in-vehicle device 10
While viewing the road map of the display device 6 at 0, the position data such as the departure place, the destination, and the registered place set by the operation unit 8 are converted into the data format of the portable device 200, transferred to the portable device 200, and stored in the memory 15 Save to. These position data can be displayed on the display device 12 when the portable device 200 is used alone, and the position data of the vehicle-mounted device 100 can be used in the same manner as the position data set by the portable device 200.

FIG. 3 is a flow chart showing the transfer operation of the guide route data. In step S11, a road map is displayed on the display device 6 of the vehicle-mounted device 100, and the starting point and the destination of the section in which the portable device 200 is carried on the road map are set by the operation unit 8. Continuing step S1
In step 2, the route calculator 5 calculates the optimum route from the starting point to the destination based on the road map data in the CD-ROM 4. The road map stored in CD-ROM4 is
Data is organized as a set of nodes that represent roads such as intersections and bends, and straight lines that connect the nodes, that is, links, and is stored together with attribute information such as position coordinates and road types of each node and each link. Has been done. In the route calculation, an optimum combination of nodes is calculated from many nodes existing between the starting point and the destination. When the optimum route is calculated, the passing point group on the route is extracted in step S13, and the position data including the starting point, the destination, and the passing point group therebetween are extracted in step S14.
The data format is converted to the data format and transferred to the portable device 200. In step S15, those position data are stored in the memory 15 of the portable device 200.

FIG. 4 is a flow chart showing the display operation of the guide route of the portable device 200. In step S21, the position data from the starting point to the destination, which is transferred from the vehicle-mounted device 100 and is stored in the memory 15, is read to create a locus diagram of the moving route. Continued Step S22
Calculates the distance, direction, etc. from the current position to the destination or the next passing point, and in step S23, the display device 1
2, the moving route, the current position, the destination and the distance and direction to the next passing point are displayed. In this way, simple route guidance is possible even with the portable device 200 that does not have road map data.

FIG. 5 is a functional block diagram showing the configuration of a modification of the above-described embodiment. It should be noted that devices similar to those shown in FIG. 1 are designated by the same reference numerals, and differences will be mainly described. This GPS navigation system is composed of an in-vehicle device 400 mounted on a vehicle and a portable device 500 that can be attached to and detached from the in-vehicle device 400. A control unit 401 of the in-vehicle device 400 includes a control unit 501 of the portable device 500, an interface 402, and Data can be exchanged by communicating with each other via the data link 600. Interface 4 equipped in in-vehicle device 400
02 has a bidirectional data conversion function between the vehicle-mounted device 400 and the portable device 500, and even the portable device 500 of a data format that cannot directly communicate with the vehicle-mounted device 400 can communicate via the interface 402. . As a result, a general-purpose portable device can be mounted on the in-vehicle device for use.

In the above-described embodiment and its modification, an example in which the distance sensor, the azimuth sensor and the route calculator are provided in the vehicle-mounted device and the current position is detected by the self-contained navigation is shown. It is not necessary to provide a device, and at least the vehicle-mounted device may have a storage device for storing road map data and a display device for displaying a road map.

In the configuration of the above embodiment, the CD-RO
M4 is map storage means, display device 6 is display means, vehicle-mounted devices 100 and 400 are vehicle-mounted navigation devices,
The GPS receiver 11 is a GPS receiver, and the display device 12
Is a display, data links 300 and 600 are communication lines, portable devices 200 and 500 are portable navigation devices, vehicle speed sensor 9 is distance detecting means, direction sensor 3 is direction detecting means, and route computer 5 is calculating. The control unit 101, 20
1, 401 and 501 constitute communication means, and the interface 402 constitutes data conversion means.

[0019]

As described above, according to the invention of claim 1, information is transmitted and received between the vehicle-mounted navigation device and the portable navigation device via a communication line, and the display means of the vehicle-mounted navigation device is displayed. GPS obtained from a portable navigation device on the road map displayed in
Since the positioning result is displayed, various kinds of information can be mutually used between the vehicle-mounted navigation device and the portable navigation device. Further, the GPS receiver can be shared by the vehicle-mounted navigation device and the portable navigation device, and an inexpensive navigation system can be constructed. According to the invention of claim 2, information is transmitted and received between the on-vehicle navigation device and the portable navigation device through the communication line, and the GPS positioning result and the self-contained navigation result obtained from the portable navigation device are obtained. Since the current position of the vehicle is determined based on the above, information can be mutually used between the vehicle-mounted navigation device and the portable navigation device, and the GPS receiver can be used as the vehicle-mounted navigation device and the portable navigation device. An inexpensive navigation system can be constructed by sharing it with the device. Also, GP
Accurate current position can be calculated by S navigation and self-contained navigation. According to the invention of claim 3, since the optimum route to the destination is calculated and displayed on the road map, the portable navigation device does not need to be provided with a map storage means or a route calculation means, and the portable navigation device can be used. It is possible to perform route guidance based on the optimal route information to the destination obtained from the vehicle-mounted navigation device when the device is used alone. According to the invention of claim 4, since the data formats of the information of the vehicle-mounted navigation device and the portable navigation device are bidirectionally converted, the vehicle-mounted and portable navigation devices of any format can communicate with each other. Therefore, many general-purpose portable navigation devices can be connected to the in-vehicle navigation and used. According to the invention of claim 5, information is exchanged with the portable navigation device via the communication means, and the GPS positioning result is obtained from the GPS receiver of the portable navigation device and displayed on the road map. Therefore, various information of the portable navigation device can be used in the in-vehicle navigation device. Further, the GPS positioning result can be input without installing a GPS receiver in the vehicle-mounted navigation device, and the cost of the vehicle-mounted navigation device can be reduced. According to the invention of claim 6, since the data format of the information of the in-vehicle navigation device and the portable navigation device is bidirectionally converted, it becomes possible to communicate with any type of portable navigation device. Many general-purpose portable navigation devices can be connected to in-vehicle navigation for use. According to the invention of claim 7, since information is exchanged with the on-vehicle navigation device through the communication means, various information of the on-vehicle navigation device can be used on the portable navigation device.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing the configuration of an embodiment.

FIG. 2 is a flowchart showing a transfer operation of GPS positioning data.

FIG. 3 is a flowchart showing a transfer operation of guide route data.

FIG. 4 is a flowchart showing a guide route display operation in the portable device.

FIG. 5 is a functional block diagram showing a configuration of a modified example of the embodiment.

FIG. 6 is a functional block diagram showing a configuration of a conventional vehicle-mounted navigation device.

FIG. 7 is a functional block diagram showing a configuration of a conventional portable navigation device.

[Explanation of symbols]

2 Vehicle speed sensor 3 Direction sensor 4 CD-ROM 5 Path calculator 6, 12 Display device 8, 14 Operation unit 9, 15 Memory 11 GPS receiver 100, 400 In-vehicle device 101, 201, 401, 501 Control unit 200, 500 Portable device 300 , 600 Datalink 402 Interface

Claims (7)

[Claims] 1. A vehicle-mounted navigation device having a map storage unit for storing a road map and a display unit for displaying a road map; a GPS receiver for receiving GPS signal radio waves to perform GPS positioning; A portable navigation device having a display for displaying a GPS positioning result and connectable to the in-vehicle navigation device via a communication line; and between the in-vehicle navigation device and the portable navigation device. In the navigation system, the information is transmitted and received via the communication line, and the display means of the vehicle-mounted navigation device displays the GPS positioning result obtained from the portable navigation device on a road map. 2. A map storage means for storing a road map, a distance detection means for detecting a traveling distance of a vehicle, an azimuth detection means for detecting a traveling azimuth of the vehicle, and a road stored in the map storage means. A map, a calculating unit that calculates the current position of the vehicle by self-contained navigation based on the traveling distance detected by the distance detecting unit and the traveling direction detected by the direction detecting unit, and read from the map storing unit. A vehicle-mounted navigation device that displays a road map and displays the current position calculated by the calculating unit in a superimposed manner on the road map; GPS navigation by receiving signal radio waves from satellites It has a GPS receiver for positioning by means of a GPS and a display for displaying the GPS positioning result, and can be connected to the on-vehicle navigation device via a communication line. A portable navigation device; and information is transmitted and received between the in-vehicle navigation device and the portable navigation device via the communication line, and the arithmetic means of the in-vehicle navigation device is the portable navigation device. A navigation system characterized in that the current position of a vehicle is determined based on a GPS positioning result obtained from a navigation device and a calculation result by the self-contained navigation. 3. The navigation system according to claim 2, wherein the vehicle-mounted navigation device is provided with route calculation means for calculating an optimum route to a destination, and the display means calculates the optimum route calculated by the route calculation means. A navigation system characterized by displaying on a road map. 4. The navigation system according to any one of claims 1 to 3, further comprising a data conversion means for bidirectionally converting a data format of information of the in-vehicle navigation device and the portable navigation device. A navigation system characterized by being provided in a device. 5. A vehicle-mounted navigation device equipped with a map storage means for storing a road map and a display means for displaying a road map, and a portable navigation device having a GPS receiver via a communication line. A communication means for exchanging information is provided, and the display means is the GPS of the portable navigation device.
A vehicle-mounted navigation device, which displays a GPS positioning result obtained from a receiver via the communication means on the road map. 6. The vehicle-mounted navigation device according to claim 5, further comprising a data conversion unit that bidirectionally converts a data format of information of the vehicle-mounted navigation device and the portable navigation device. apparatus. 7. A portable navigation device equipped with a GPS receiver that receives a signal radio wave from a satellite and performs positioning by GPS navigation, and a display device that displays the GPS positioning result. A portable navigation device comprising a communication means for exchanging information between them via a communication line.