JPH11218425A - Navigation equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a navigation equipment which performs guidance by displaying the position of a user on a map, and can freely change equipment configuration and be used in the inside or outside of a car in response to user's other object. SOLUTION: A navigation equipment which displays the measured position of a user on a map, and enables remote operation of previously determined specific action is constituted of a unit 1 for conducting a realtime processing, and a unit 2 for conducting a non-realtime processing. The unit 1 is provided with at least one out of a vehicle speed sensor, a relative azimuth sensor, a GPS receiver, and a remote control unit 182, a signal processing means and a communication means. Each signal is transmitted from the communication means. The unit 2 calculates the position and the like of a user on the basis of a sensor signal or a GPS observation signal which are received via the communication means, or performs specific action on the basis of a received remote control switch signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device which displays the position of a user on a map and performs route guidance and the like, and which can be used inside and outside a vehicle by freely changing the device form.

[0002]

2. Description of the Related Art A conventional navigation device detachable from a vehicle will be described. FIG. 23 shows, for example, JP-A-4-23.
FIG. 1 is a block diagram illustrating a configuration of a conventional navigation device disclosed in Japanese Patent Application Laid-Open No. 8218, where 1 is a vehicle-side unit, and 2 is a detachable unit. The detachable unit 2 is detachable from the vehicle and can be carried, but the vehicle-side unit 1 is fixed to the vehicle. On the other hand, a geomagnetic sensor S1, a vehicle speed sensor S2, a wheel speed sensor S3, and a gyro S4 are attached to predetermined positions of the vehicle, and output signals are transmitted to a connector 132 at an end of a cable of the sensor. As for the battery power supply of the vehicle, an accessory (ACC) power supply and a power supply such as GND are connected to the connector 172 attached to the end of the cable. The detachable unit 2 includes a control unit 15 and a map data storage unit 21, a cable for supplying power and a connector 171 attached to an end of the cable, a geomagnetic sensor S 1,
Vehicle speed sensor S2, wheel speed sensor S3, and gyro S
4 and a connector 131 is provided at an end thereof. The connector 171 and the connector 131 of the detachable unit 2 are respectively connected to the connector 172 and the connector 132 on the vehicle side, and a predetermined power supply and various sensor signals are taken into the case. In addition, the detachable unit 2 is provided with a cable having a connector 164 attached to an end. The vehicle-side unit 1 includes a display unit 23, a control unit 25 having a man-machine interface, an input unit 24, and the like, and is provided with a cable having a connector 166 attached to an end. The connector 166 of the vehicle unit 1 is connected to the connector 164 of the detachable unit 2.

Next, the operation will be described. The control means 15 of the detachable unit 2 includes a microcomputer, and inputs the signals of the geomagnetic sensor S1, the vehicle speed sensor S2, the wheel speed sensor S3, and the gyro S4 to calculate the position of the user, and calculates the position of the user. The position is identified on the road by performing map matching with the road data. Further, it performs drawing control to display the image data of the map and the current position, and transmits a video signal to the display means 23 of the vehicle unit 1.
Further, a control signal is exchanged with the control means 25 of the vehicle unit 1.

In a conventional navigation device which can be attached to and detached from a vehicle, a part of the device can be taken out of the vehicle and used outside the vehicle.
No. 792 discloses this. FIG. 24 is a block diagram showing the configuration of the apparatus. In the figure, reference numeral 1 denotes a vehicle-side unit, which is a GPS (Global Position).
ning System) receiver 11, gyro 12,
It comprises a control means 15 and a power supply means 17. Reference numeral 2 denotes a detachable unit, which includes a control unit 25, a map data storage unit 21, and a display unit 23. The vehicle side unit 1 and the detachable unit 2 are provided with connectors for connecting the two units. When the detachable unit 2 is mounted on a vehicle and used,
The connector of the detachable unit 2 is connected to the connector of the vehicle unit 1.

Next, the operation will be described. The power supply means 17 of the vehicle-side unit 1 includes, in addition to the components in the unit,
A predetermined power supply is also supplied to each unit in the detachable unit 2 via a power supply line. Control means 15 of vehicle-side unit 1
Is the vehicle speed signal, parking signal, accessory (ACC)
Vehicle signals such as power supply, observation signals from the GPS receiver 11,
And the output signal of the gyro 14 is output to the control means 25 of the detachable unit 2. Control means 25 of detachable unit 2
Performs predetermined navigation processing based on the data in the GPS receiver 11, the gyro 14, and the map data storage unit 21, and displays the result on the display unit 23.

When an AC 100 V power plug or a vehicle cigarette lighter plug is connected to an AC 100 V outlet or a vehicle cigarette lighter socket, a predetermined power is supplied to each unit in the detachable unit 2 to display a map or the like.

[0007]

SUMMARY OF THE INVENTION For example, Japanese Patent Application Laid-Open No. Hei 4-2
The navigation device disclosed in Japanese Patent No. 38218 discloses a navigation device that is not a vehicle in which a geomagnetic sensor, a vehicle speed sensor, a wheel speed sensor, and a gyro are previously installed at predetermined positions.
There was a problem that the detachable unit could not be relocated. In addition, since there is no display means inside the detachable unit and a map cannot be displayed, there is a problem that the detachable unit cannot be used outside the vehicle.

For example, in the navigation device disclosed in Japanese Patent Application Laid-Open No. 8-318792, unless the detachable unit is connected to the vehicle-side unit attached to the vehicle with a connector, the position of the vehicle is measured and the position is displayed on a map. There was a problem that it could not be displayed.

Further, for example, the navigation devices disclosed in JP-A-4-238218 and JP-A-8-318792 cannot upgrade the software version, and the interface between the vehicle-side unit and the detachable unit is not available. For the purpose of disclosure, there is a problem that it is not possible to combine the other device possessed by the user with the vehicle-side unit or the detachable unit and use it for another purpose.

[0010] Further, for example, the navigation devices disclosed in JP-A-4-238218 and JP-A-8-318792 operate by a combination of a predetermined vehicle-side unit and a detachable unit. The side unit supplies only a predetermined power supply voltage to the detachable unit side. Therefore, when the other unit owned by the user is used in combination with the vehicle side unit for another purpose, the power supply of the other unit owned by the user is used. There was a problem that security was required.

The present invention has been made in order to solve the above-mentioned problems, and relates to a navigation device that measures a position of a user and displays it on a map and also provides guidance to a destination. The first is that it can be easily relocated to other vehicles or used outside the vehicle, the navigation device can be remotely operated with a remote control, and even when used outside the vehicle, not only map display but also position measurement and position display are possible.
The purpose of.

It is a second object of the present invention to operate the navigation apparatus without changing the settings of the navigation apparatus even if the configuration of the navigation apparatus is changed in a predetermined combination.

It is a third object of the present invention to reduce the possibility of malfunction due to communication errors in the navigation device while the navigation device is being relocated to another vehicle or used outside the vehicle.

[0014] Further, even in a navigation device which can calculate the position of the user based on the GPS observation signal, the vehicle speed signal and the gyro output signal, the user does not connect the vehicle speed signal cable provided in the vehicle to the device. In this case, a fourth object is to calculate a user's position and the like without using a vehicle speed signal and display the calculated position on a map.

It is a fifth object of the present invention to be able to use the navigation device in combination with another device possessed by the user for another purpose.

A navigation device capable of identifying a user's position and the like with high accuracy enables the user to easily upgrade the software version. The navigation device also has applications other than navigation, such as a word processor and a spreadsheet. A sixth object is to be able to do it.

It is a seventh object of the present invention to easily supply power to the navigation device.

[0018]

According to a first aspect of the present invention, there is provided a navigation device that outputs a signal corresponding to a moving distance of a user and a vehicle speed sensor that outputs a signal corresponding to a change in the traveling direction of the user. A direction sensor, its sensor signal processing means, and a GP for observing the position of the user using a satellite.
The apparatus configuration is divided into a unit 1 for performing real-time processing such as remote control signal processing such as an S receiver and a remote controller, and a unit 2 for performing non-real-time processing such as map display using built-in map data. The unit 1 includes a vehicle speed sensor, a relative direction sensor, a GPS receiver,
And at least one of the remote control means, the signal processing means and the communication means, and each signal is transmitted from the communication means, and the unit 2 is based on either the sensor signal or the GPS observation signal received via the communication means. The position of the user is calculated, or a predetermined operation is performed based on the received remote operation signal.

A navigation device according to a second configuration of the present invention comprises a unit 1 for calculating and transmitting a position of a user based on both sensor signals of a vehicle speed sensor and a relative direction sensor and an observation signal of a GPS receiver, A unit 2 that does not calculate the position when the position of the user is received is provided.

In the navigation apparatus according to the third configuration of the present invention, each of the units 1 and 2 includes a plurality of communication units and a communication automatic switching unit for automatically switching to an effective communication unit.

A navigation device according to a fourth configuration of the present invention includes a vehicle speed sensor, a relative direction sensor, a GPS receiver,
And at least one of the remote control means, a plurality of units 1 having signal processing means and communication means for transmitting each signal from the communication means, and a plurality of communication means having plural communication means 1 It comprises a unit 2 for sending and receiving data.

A navigation device according to a fifth configuration of the present invention comprises a vehicle speed sensor connection determining means for determining whether or not a vehicle speed sensor is connected based on both sensor signals of a vehicle speed sensor and a relative direction sensor and an observation signal of a GPS receiver. A unit 1 for obtaining the position information of the user only with the GPS observation signal or calculating from the GPS observation signal and the signal of the relative azimuth sensor when it is determined that the vehicle speed sensor is not connected.
Alternatively, the unit 2 is provided.

The navigation apparatus according to the sixth configuration of the present invention has a fixed length identification code indicating the type of data in a data sentence so that the type of data can be determined from the data exchanged between the unit 1 and the unit 2. Is added. The unit 1 transmits data to which an identification code is added, and the unit 2 performs a predetermined process according to the identification code of the received data.

The navigation apparatus according to the seventh configuration of the present invention is capable of operating independently of each other without exchanging information between the unit 1 and the unit 2.
A unit that periodically transmits a sensor signal, a GPS observation signal, and a position calculation result from a communication unit or irregularly transmits a remote operation signal from a communication unit regardless of whether the unit 1 and the unit 2 are connected. 1 and a unit 2 that performs an event-driven processing such that processing is performed in accordance with the received data only when previously registered data is received. The communication specifications are disclosed to the user, and the communication between the unit 1 and the unit 2 is an interface that is easy for the user to use, such as RS232C.

The navigation device according to the eighth configuration of the present invention is a unit 1 for performing real-time processing such as sensor signal processing, GPS observation signal processing, and remote signal processing.
And a unit 2 that performs non-real-time processing such as map display using the built-in map data. The unit 2 uses a personal computer that is easy for a user to handle. Then, an application for identifying the position of the user by performing map matching based on the map information and the position information based on at least one of the sensor signal and the GPS observation signal and displaying it on the map is stored in a storage means such as a hard disk of the personal computer. It is something to memorize.

In the navigation apparatus according to the ninth configuration of the present invention, the unit 1 is provided with a variable output voltage type power supply means and an output voltage switching means, and the power supply voltage based on the switching signal of the output voltage switching means is supplied from the unit 1 to the unit. 2 is supplied.

In the navigation device according to the tenth configuration of the present invention, when power is not supplied to the unit 2, the unit 2 operates with a built-in battery (battery) and supplies a necessary power supply voltage. Request to unit 1 via communication means. The unit 1 supplies the required power supply voltage to the unit 2 via the communication means.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a navigation apparatus according to a first configuration of the present invention, when a unit 1 has a built-in relative direction sensor and sensor signal processing means, the unit 1 detects a vehicle speed signal and a relative direction sensor signal. It is processed periodically by the signal processing means and transmitted from the communication means. Unit 1
If the GPS receiver has built-in observation signals,
The GPS observation signal received from the GPS receiver is transmitted from the communication means. Further, when the unit 1 has a built-in remote control signal processing means, the unit 1 transmits a remote control signal received from the remote control means from the communication means. Then, the unit 2 receives the sensor signal or G
The position of the user is calculated based on one of the PS observation signals, or a predetermined operation is performed based on the received remote operation signal.

In the navigation apparatus according to the second configuration of the present invention, the unit 1 calculates the position of the user based on both the sensor signals of the vehicle speed sensor and the relative direction sensor and the observation signal of the GPS receiver. Send to 2.
Then, the unit 2 displays a map using the built-in map data, and displays the received position of the user on a map.

In the navigation device according to the third configuration of the present invention, the communication automatic switching means for both the unit 1 and the unit 2 is a communication means which is currently operating among a plurality of communication means installed in each unit. To identify.
Then, it automatically switches to an effective communication means, and the unit 1
And various data are exchanged between the unit and the unit 2.

In the navigation device according to the fourth configuration of the present invention, the plurality of units 1 have at least one of a vehicle speed sensor, a relative direction sensor, a GPS receiver, and remote control means, a signal processing means and a communication means. Then, each signal is transmitted from the communication means. And unit 2
Performs processing based on data received from a plurality of units 1.

In the navigation device according to the fifth configuration of the present invention, the vehicle speed sensor connection determining means of the unit 1 or unit 2 determines the vehicle speed based on both sensor signals of the vehicle speed sensor and the relative direction sensor and the observation signal of the GPS receiver. It is determined whether the sensor is connected. When it is determined that the vehicle speed sensor is not connected, the position information of the user is transmitted to the GPS.
It is obtained from the observation signal only, or is calculated from the GPS observation signal and the signal of the relative direction sensor. When it is determined that the vehicle speed sensor is connected, position information of the user is calculated based on both sensor signals of the vehicle speed sensor and the relative direction sensor and the observation signal of the GPS receiver.

In the navigation device according to the sixth configuration of the present invention, the unit 1 transmits data to which an identification code corresponding to each signal is added. Then, when receiving the data, the unit 2 performs a predetermined process according to the identification code in the data sentence.

In the navigation device according to the seventh configuration of the present invention, the unit 1 and the unit 2 operate independently of each other without mutually exchanging information, and are provided with communication means conforming to a predetermined communication specification. If it is a device, it exchanges data and performs predetermined processing.

In the navigation device according to the eighth configuration of the present invention, the unit 2 (personal computer) is a user based on at least one of the sensor signals of the vehicle speed sensor and the relative azimuth sensor and the observation signal of the GPS receiver. Calculate the position etc. of Then, map matching is performed based on the map data stored in the built-in storage means and the calculated position of the user to identify the position on the road and display it on the map.

In the navigation device according to the ninth configuration of the present invention, the power supply means of the unit 1 generates a power supply voltage based on the switching signal of the output voltage switching means and supplies power to the unit 2.

In the navigation apparatus according to the tenth configuration of the present invention, when power is not supplied to the unit 2, the unit 2 operates with a built-in battery (battery) and supplies a necessary power supply voltage. Request to unit 1 via communication means. Then, the unit 1 that has detected that a request to supply the power supply voltage via the communication unit supplies the requested power supply voltage to the unit 2.

Hereinafter, the present invention will be described in detail with reference to the drawings showing the embodiments. Embodiment 1 FIG. FIG. 1 is a block diagram showing a configuration of the navigation device according to the first embodiment of the present invention. In the figure, reference numeral 1 denotes a unit which comprises a GPS receiver 11 and a GPS antenna 12 and performs real-time processing at predetermined time intervals. Reference numeral 2 denotes a map data storage unit 21, a communication unit 22, a display unit 23, an input unit 24, and a control unit 25. And a non-real-time process such as a map display using the map data stored in the map data storage unit 21. FIG. 2 is a perspective view of the navigation device according to the first embodiment of the present invention, in which the GPS receiver 11 and the map data storage means 21 are built in an IC card, respectively. A battery slot having a mechanism for attaching and detaching the battery (secondary battery) 261, the map data storage means 21, and the GPS receiver 11 in the direction of the arrow in the figure, and an IC card compatible slot are provided. When the GPS receiver 11 is inserted into the slot corresponding to the IC card, the GPS receiver 1
The communication means 22 of the unit 1 and the unit 2 are connected via an IC card interface. The input / output unit 24 of the unit 2 includes an electromagnetic transfer type tablet 241 and a stylus pen 242 disposed on the front of the liquid crystal display 23. When a battery 261 which is one form of the power supply means 26 for portable use is inserted into the battery socket of the unit 2, power is supplied to each part of the navigation device, and the device can be carried and used. Also, A
A power plug 262 inserted into a C100V outlet and a DC-IN plug 264 connected to the DC-IN connector of the unit 2 are provided with AC adapters 263 attached to both ends of the cable.
63 is used so that the device can be used for a long time.
When the GPS receiver 11 is connected to the unit 2, the power supply unit 26 of the unit 2 also supplies power to the GPS receiver 11.

Next, the operation of the control means 25 of the unit 2 of the navigation device will be described with reference to the drawings. The control means 25 of the unit 2 is composed of a microcomputer, and operates according to the flowchart showing the processing contents of the main routine shown in FIG. 3 and the flowchart showing the processing contents of the interrupt processing 1 for communication shown in FIG.

In FIG. 3, when the power is turned on by pressing the power button (not shown) of the unit 2, the control means 2
5 initializes all processes such as setting of the communication means 22 in step S301. Then, in step S302, it is determined whether the power has been turned on or whether the user has performed an input operation with the stylus pen 242 via the tablet 241.
Next, the process proceeds to step S305. If the power has just been turned on, the map data of the area used last time is read from the map data storage means 21 in step S303, and the liquid crystal display 23
At step S304, and a button representing a change in map scale or the like is displayed on the map in step S304. If there is an input operation, a map display corresponding to the input operation is displayed in step S303.
Do with. Specifically, when the tablet 241 detects that the user has pressed the item button displayed on the liquid crystal display 23 with the stylus pen 242, the user performs operations such as enlargement / reduction of the map scale according to the item button. , Liquid crystal display 23
If it is detected that the user has pressed the map displayed on the screen, the map display is scrolled around the pressed point, and the buttons are displayed again in step S304. Step S305
Then, whether or not the reception of the observation signal of the GPS receiver 11 has been completed is determined by referring to the GPS observation signal reception flag. If the flag has been set, it is determined that the observation signal from the GPS receiver 11 has been received, and the process proceeds to step S306. If the flag has been cleared, the process returns to step S302. Step S3
At 06, the flag is cleared for the next processing. In step S307, if the observed position is within the map display range, a mark indicating the position is displayed on the map.

On the other hand, the GPS receiver 11
When the GPS receiver 11 is connected by being inserted into the C card slot, the GPS receiver 11 receives radio waves from the satellite with the GPS antenna 12 and calculates the position of the user at predetermined time intervals.
The observation signal is output via communication means (not shown) of the receiver 11. Then, the control means 25 of the unit 2
The GPS observation signal is received via the communication means 22 in the interruption processing 1 shown in FIG. In the figure, in step S401, GP
After receiving the observation signals of the S receiver 11, the observation signals are sequentially stored.
In step S402, it is determined whether the reception of the observation signal has been completed. If the reception has been completed, the process proceeds to step S403. If the reception has not been completed, the interrupt process 1 ends. Then, in step S403, it is determined that the reception of the observation signal has been completed,
The observation signal reception flag is set, and the interrupt processing 1 ends.

Embodiment 2 FIG. 5 is a block diagram illustrating a configuration of a navigation device according to a second embodiment of the present invention;
FIG. 6 is a perspective view showing a configuration of the navigation device according to the second embodiment of the present invention. In the figure, reference numeral 1 denotes a GPS receiver 11, a GPS antenna 12, and a sensor signal processing unit 1.
3, a gyro 14, a control unit 15, a communication unit 16, and a power supply unit 17, and a unit 1 for performing real-time processing such as sensor signal processing.
4, a power output cable having a DC-IN plug 264, a power input cable having a cigarette lighter plug 171, and a connector 131
And a GPS antenna cable having a GPS antenna 12. 2
Denotes map data storage means 21, communication means 22, display means 2
3, a unit 2 comprising input means 24, control means 25, and power supply means 26 and performing non-real-time processing such as map display using map data stored in the map data storage means 21, and a battery (secondary battery) 261 and the map data storage means 21 in the direction of the arrow shown in the figure, a battery slot and an IC card compatible slot, a serial communication connector compatible with an RS232C interface, and a DC for incorporating a power supply into the unit. An input / output connector 24 includes an electromagnetic transfer type tablet 241 and a stylus pen 242 disposed on the front of the liquid crystal display 23 as input means 24.

To mount the navigation device on a vehicle, first, the G of the unit 1 must be located at a location where radio waves from satellites can be received.
Place the PS antenna 12 and connect the connector 131 of the unit 1
The connector 1 of the vehicle speed signal cable arranged in the vehicle
32. The unit 1 is installed on the floor in the vehicle cabin so as not to move with a velcro tape or the like, and the unit 2 is installed on a dashboard using a predetermined mounting tool, or is held by a person other than the driver. Then, the DC-
Connect IN plug 264 and communication plug 164 to D of unit 2.
If the cigarette lighter plug 171 is inserted into the cigarette lighter socket of the vehicle after connecting to the C-IN connector and the serial communication connector, power can be taken into the unit 1 and the unit 2 and the unit becomes operable.

Next, the operation of the unit 1 of the navigation device will be described with reference to the drawings. The control means 15 of the unit 1 is composed of a microcomputer. FIG. 7 is a flow chart showing the processing contents of the main routine of the control means 15, and FIG. 8 is a flow chart showing the processing contents of the interruption processing 2 performed at predetermined time intervals. 9 is a flowchart showing the processing contents of a vehicle speed signal interruption processing 3 performed via the sensor signal processing means 13.
Note that the flowchart showing the processing content of the interrupt processing 1 for receiving the observation signal of the GPS receiver 11 at predetermined time intervals is the same as that of FIG. 4 described in the first embodiment, and therefore, the description is omitted.

In FIG. 7, when the power supply to the unit 1 is turned on, the control means 15 makes the communication means 16 in step S701.
Initialize all processes such as setting. Then, in step S701, it is determined whether or not a predetermined time, which is a measurement cycle of the vehicle speed signal, has elapsed based on the sensor signal processing flag. If the flag is cleared, step S7 until it is set.
02, and if set, the process proceeds to step S703. In step S703, the sensor signal processing flag is cleared for the next processing. In step S704, the gyro output signal is A / D converted and input. Step S7
In step 05, the count value of the vehicle speed signal counted in the interrupt processing 3 described later and the gyro signal subjected to A / D conversion are output via the communication means. In step S706, G
Whether or not all the observation signals of the PS receiver have been received is determined by referring to the GPS observation signal reception flag. If the flag has been set, the process proceeds to step S707, and if the flag has been cleared, the process returns to step S702. In step S707, the GP
An S observation signal is output via communication means. Step S7
At 08, the GPS observation signal reception flag is cleared for the next processing, and the process returns to step S702. Step S7
The processing from step 02 to step S708 is completed within a predetermined time.

In FIG. 8, interrupt processing 2 is performed at predetermined time intervals. In step S801, a sensor signal processing flag is set, and the interrupt processing 2 ends.

In FIG. 9, the interrupt processing 3 is performed in step S9.
At 01, 1 is added to the vehicle speed signal count value, and the interrupt processing 3 is terminated.

Next, the operation of the unit 2 of the navigation device will be described with reference to the drawings. Unit 2
Is composed of a microcomputer. FIG. 10 is a flow chart showing the processing contents of a main routine.
FIG. 11 is a diagram showing the processing content of the interrupt processing 1 for communicating with the unit 1 via the communication means 22.

In FIG. 10, when the power is turned on by pressing the power button of the unit 2 (not shown), the control means 2 is turned on.
5 initializes all the processing such as setting of the communication means 25 in step S1001. In step S1002, it is determined whether the power has been turned on or whether the user has performed an input operation with the stylus pen 242 via the tablet 241. If the power has not been turned on and there has been no input operation, then in step S1005 Proceed to. Immediately after the power is turned on, in step S1003, the map data of the area used last time is read out from the map data storage unit 21 and displayed on the liquid crystal display 23 in a map. To be displayed. If an input operation has been performed, a map display corresponding to the input operation is performed in step S1003. Specifically, when the tablet 241 detects that the user has pressed the item button displayed on the liquid crystal display 23 with the stylus pen 242, the user performs operations such as enlargement / reduction of the map scale according to the item button. ,
When it is detected that the user pressed the map displayed on the liquid crystal display 23, the map display is scrolled around the pressed point, and the buttons are displayed again in step S1004.
In step S1005, it is determined by referring to the position calculation result reception flag whether the data received in the interrupt processing 1 is the position calculated by the unit 1. If the position calculation result reception flag has been set, the flow advances to step S1014 to clear the flag for the next processing. Then, step S10
Proceed to 13 and if the received position is within the map display range,
A mark indicating the position is displayed on the map, and thereafter, the process returns to step S1002. If the position calculation result reception flag has been cleared, the flow advances to step S1006 to determine whether or not the data received in the interrupt processing 1 is a sensor signal by referring to the sensor signal reception flag. If the sensor signal reception flag has been set, the flow advances to step S1007 to clear the flag for the next process. Subsequently, step S100
Proceeding to step 8, calculate the travel distance and the change of heading for each predetermined time from the received vehicle speed signal count value and the gyro signal, and store the integrated values as the movement distance and heading change for each GPS observation cycle. . If the sensor signal reception flag has been cleared, step S100
The process proceeds to step 9 to determine whether or not the data received in the interrupt processing 1 is a GPS observation signal by referring to the GPS observation signal reception flag. If the GPS observation signal reception flag has been set, the flow advances to step S1010 to clear the flag for the next processing. Then, the process proceeds to step S1011 and the GPS
The position of the vehicle is calculated based on the movement distance and traveling direction change for each observation cycle and the GPS observation signal. Step S101
In step 2, the change of the moving distance and the change of the traveling direction in each GPS observation cycle are cleared for the next processing. In step S1013,
If the position calculated in step S1012 is within the map display range, a mark representing the position is displayed on the map, and thereafter, the process returns to step S1002.

In FIG. 11, in the interrupt processing 1, various data of a predetermined length transmitted from the unit 1 at predetermined time intervals are stored in one unit.
Receives character by character. First, in step S1101, it is determined whether or not a sensor signal is being received. If the sensor signal is being received, the process proceeds to step S1102; otherwise, the process proceeds to step S1105. In step S1102, the received data is sequentially held as a sensor signal. In step S1103, it is determined whether or not the reception of the sensor signal has been completed. If the reception has been completed, the sensor signal reception flag is set in step S1104, and then the interrupt processing 1 ends.
If the reception is not completed, the interrupt processing 1 is terminated. In step S1105, it is determined whether or not the GPS observation signal is being received. If the GPS observation signal is being received, step S11 is performed.
In step S1109, if no reception is being performed, the flow advances to step S1109. In step S1106, the received data is sequentially held as a GPS observation signal. In step S1107, the GPS
It is determined whether or not the reception of the observation signal has been completed. If the reception has been completed, the GPS observation signal reception flag is set in step S1108, and then the interrupt processing 1 ends. If the reception is not completed, the interrupt processing 1 is terminated. Step S1109
Then, it is determined whether or not the position of the user is being received. If the position or the like is being received, the process proceeds to step S1110. If not, the interrupt process 1 is terminated. In step S1110, the received data is sequentially held as a position calculation result. In step S1111, it is determined whether the reception of the position or the like has been completed. If the reception has been completed, the position calculation result reception flag is set in step S1112, and then the interrupt processing 1 ends.
If the reception has not been completed, the interrupt processing ends.

Embodiment 3 FIG. Hereinafter, another embodiment in which the configuration of the apparatus is the same as that of the second embodiment and the processing content of the main routine of the control means 15 of the unit 1 is different from that of the second embodiment will be described with reference to the drawings. FIG. 12 shows the unit 1
6 is a flowchart showing the processing contents of the main routine of the control means 15 of FIG.

In FIG. 12, when the power supply to the unit 1 is turned on, the control means 15 initializes all processes such as setting of the communication means 16 in step S1201. Then, in step S1202, it is determined whether or not a predetermined time, which is a measurement cycle of the vehicle speed signal, has elapsed based on the sensor signal processing flag.
If the flag is cleared, the process waits in step S1202 until it is set, and if it is set, step S1
Proceeding to 203, the sensor signal processing flag is cleared for the next processing. In step S1204, the output signal of the gyro 14 is A / D converted and input. Step S120
In step 5, the moving distance and the heading change at predetermined time intervals are calculated from the count value of the vehicle speed signal counted in the interrupt processing 3 and the gyro signal obtained by the A / D conversion. Obtain the moving distance and change of heading direction for each observation cycle. In step S1206, it is determined whether or not all the observation signals of the GPS receiver have been received in interrupt processing 1.
Judge by looking at the PS observation signal reception flag. If the flag is set, the process proceeds to step S1207, and if the flag is cleared, the process returns to step S1202. Step S12
In step 07, the travel distance and the change in the traveling direction for each GPS observation cycle, the position of the vehicle based on the GPS observation signal, and the like are calculated.
In step S1208, a calculation result such as a position is output via the communication unit. In step S1209, the GPS observation signal reception flag is cleared for the next processing, and thereafter, the flow returns to step S1202.

Embodiment 4 FIG. 13 is a block diagram showing a configuration of the navigation device according to the fourth embodiment of the present invention, and FIG. 14 is a perspective view showing a configuration of the navigation device according to the fourth embodiment of the present invention. In the figure, reference numeral 18 denotes a remote control switch signal processing unit provided in the unit 1, and 181 denotes a cable having a remote control light receiving unit at a tip, which converts a light reception signal into an electric signal and transmits the electric signal to the remote control switch signal processing unit 18. 182 is a remote control unit. Otherwise, the configuration is the same as that of the second embodiment, and the description is omitted.

Next, the operation of the unit 1 of the navigation device will be described with reference to the drawings. The control means 15 of the unit 1 is composed of a microcomputer.
FIG. 16 is a flowchart showing the contents of processing of the main routine, and FIG. 16 is a flowchart showing the contents of interrupt processing 4 performed when the remote control unit is operated by a switch. The interrupt processing 1 for receiving the observation signal of the GPS receiver 11 every predetermined time, the interrupt processing 2 for every predetermined time, and the vehicle speed signal interrupt processing 3 through the sensor signal processing means 13 are executed. Since the second embodiment is the same as the second embodiment, the description is omitted.

In FIG. 15, when the power is turned on to the unit 1, the control means 15 initializes all processes such as setting of the communication means 16 in step S1501. Then, in step S1502, it is determined whether or not a remote control switch signal has been received in interrupt processing 4 with reference to the remote control switch signal reception flag. If the flag has been set, the process proceeds to step S1503, and if the flag has been cleared, the process proceeds to step S1.
Proceed to 505. In step S1503, a remote control switch signal is output via the communication unit 16. Step S1
In step 504, the remote control switch signal reception flag is cleared for the next process, and thereafter, the process returns to step S1502. In step S1505, it is determined based on a sensor signal processing flag whether a predetermined time, which is a measurement cycle of the vehicle speed signal, has elapsed. If the flag has been cleared, the process returns to step S1502. If the flag has been set, the process returns to step S1.
Proceed to 506. In step S1506, the sensor signal processing flag is cleared for the next processing. Step S15
At 07, the output signal of the gyro 14 is A / D converted and input. In step S1508, the count value of the vehicle speed signal counted in the interrupt processing 3 and the gyro signal are output via the communication means 16. In step S1509, G
GP whether or not all the observation signals of the PS receiver 11 have been received
The determination is made by looking at the S observation signal reception flag. If the flag has been set, the process proceeds to step S1510, and if the flag has been cleared, the process returns to step S1502. Step S151
At 0, a GPS observation signal is output via the communication means 16. In step S1511, the GPS observation signal reception flag is cleared for the next process, and thereafter, step S15
Return to 02. Steps S1502 to S1
511 is completed within a predetermined time.

In FIG. 16, interrupt processing 4 is executed when a switch of the remote control unit 182 is operated. In step S1601, a remote control switch signal is decoded. In step S1602, the remote control switch signal reception flag is set, and the interrupt processing 4 ends.

Next, the operation of the unit 2 of the navigation device will be described with reference to the drawings. The control means 25 of the unit 2 is composed of a microcomputer.
FIG. 18 is a flowchart showing the processing contents of the main routine, and FIG. 18 is a diagram showing the contents of interrupt processing 1 for communicating with the unit 1 via the communication means 22.

In FIG. 17, when the power is turned on by pressing the power button of the unit 2 (not shown), the control means 2 is turned on.
5 initializes all the processing such as the setting of the communication unit 22 in step S1501. In step S1702, it is determined via the tablet 241 whether the power has been turned on or whether the user has performed an input operation with the stylus pen 242.
If it is not immediately after power-on and there is no input operation, the process advances to step S1703. If the power has just been turned on, the flow advances to step S1705 to read the map data of the area used last time from the map data storage means 21 and display the map on the liquid crystal display 23. In step S1706, a button indicating a map scale change or the like is displayed. Display above. If an input operation has been performed, the process proceeds to step S1705, and a map is displayed according to the input operation. Specifically, when the tablet 241 detects that the user has pressed the item button displayed on the liquid crystal display 23 with the stylus pen 242, the user performs operations such as enlargement / reduction of the map scale according to the item button. ,
When it is detected that the user pressed the map displayed on the liquid crystal display 23, the map display is scrolled around the pressed point, and the buttons are displayed again in step S1706. In step S1703, it is determined by referring to the remote control switch signal reception flag whether or not the data received in interrupt processing 1 described later is a remote control switch signal. If the remote control switch signal reception flag has been set, step S1704
Then, the flag is cleared for the next processing. In subsequent steps S1705 and S1706, a map display and item buttons are displayed in response to the operation of the remote control switch signal as in the case where the operation is performed with the stylus pen 242. If the remote control switch signal reception flag has been cleared, the process proceeds to step S1707. Steps S1707 to S1716 are the same as steps S1005 to S1014 in FIG. 10 in the second embodiment, and a description thereof will not be repeated.

In FIG. 18, interrupt processing 1 is performed for unit 1
, And receives various data of a predetermined length transmitted every predetermined time, one character at a time. First, the processing from step S1801 to step S1812 excluding step S1809 is performed in step S1101 in FIG.
Since this is the same as step S1112, the description is omitted.
Then, in step S1809, it is determined whether or not the position of the user is being received.
Proceed to 1810, if not receiving, step S1813
Proceed to. In step S1813, it is determined whether or not a remote control switch signal is being received.
Proceeding to step 814, the interrupt processing 1 is immediately terminated if no reception is being performed. In step S1814, the received data is sequentially held as a remote control switch signal. Step S1815
Then, it is determined whether the reception of the remote control switch signal is completed or not.
If the reception has been completed, the remote control switch signal reception flag is set in step S1816, and then the interrupt processing 1 ends. If the reception is not completed, the interrupt processing 1 is terminated.

Embodiment 5 FIG. FIG. 19 is a block diagram illustrating a configuration of a navigation device according to the fifth embodiment of the present invention, and FIG. 20 is a perspective view illustrating a configuration of the navigation device according to the fifth embodiment of the present invention. In the figure, 163
161 is a communication automatic switching means provided in the unit 1;
Is a communication A means having a serial communication cable (solid line) having a communication plug 164 at an end, and 162 is a serial communication cable (dotted line) having an RS232C interface 165 built in an IC card at an end. Communication B means. 223 is a communication automatic switching unit provided in the unit 2, 221 is a communication A unit having a serial communication connector for connecting to the communication plug 164 on the side of the unit 2, and 222 is connected to an RS232C interface 165 of an IC card. Communication B means having a serial communication connector for use in an IC card compatible slot on the side of the unit 2. Otherwise, the fourth embodiment is the same as the fourth embodiment, and a description thereof will not be repeated.

Next, with respect to the operations of the units 1 and 2 of the navigation device, only the processing relating to the switching of the communication means will be described. Otherwise, the configuration is the same as that of any of the above-described fourth embodiments, and a description thereof will be omitted. The automatic communication switching means 163 and 223 of the unit 1 and the unit 2 try to use the communication A means 161 and 221 when the control means 15 and 25 of each unit transmit and receive. First, the unit 1 transmits predetermined data from the communication A means 161. Thereafter, if response data comes from the unit 2 before a predetermined time elapses, the communication A means 161 determines that the communication A means 161 is currently in use. If no response data is received from the unit 2 within a predetermined time, predetermined data is transmitted from the communication B means 162. If response data is received from the unit 2 before the predetermined time elapses, the communication B means 162 is determined to be currently in use. If no response data is received from the unit 2 within a predetermined time, the predetermined data is transmitted from the communication A stage 161 again. On the other hand, when the data is received from the communication A means 221, the automatic communication switching means 223 of the unit 2 enables only the communication A means 221 irrespective of the state of the communication B means 222, and the control means 25 can use the received data. To do. Also, the communication B means 222
When the data is received from only the communication B unit 222, only the communication B unit 222 is enabled, and the control unit 25 can use the received data. When receiving the data from the communication A means 221 or the communication B means 222, the control means 25 outputs predetermined response data from the communication means being used.

Embodiment 6 FIG. In the first to fourth embodiments, when the position of the user is obtained by using only the GPS receiver, the GPS receiver 11 built in an IC card as shown in FIG. 2 is used. And GP again
When calculating the position of the user from the S receiver 11, the vehicle speed sensor and the gyro 14, the unit 1 as shown in FIG. 6 is used, and when the remote control unit 182 is used for remote control, it is shown in FIG. It has been described that such a unit 1 is used. However, as shown in FIG. 21, a GPS receiver 11 built in an IC card, a vehicle speed sensor, a gyro 1
4 and the unit 1 including the remote control unit 182 are combined with the unit 2 so that the unit 2 calculates the position of the user from the sensor signals and GPS observation signals received from a plurality of communication means, and based on the remote control switch signal. Or an equivalent operation may be performed.

Embodiment 7 FIG. In the second and third embodiments, the unit 2 calculates the position information of the user based on the GPS observation signal, the vehicle speed signal, and the gyro output signal in step S1012 of FIG. Is described in step S1207, but it is determined whether or not the vehicle speed sensor is connected before calculating the position information of the user. If the vehicle speed sensor is not connected, the position of the user is determined based on the GPS observation signal. May be obtained, or the position of the user may be obtained based on the GPS observation signal and the gyro signal. The connection of the vehicle speed sensor is determined when the speed information of the GPS observation signal exceeds a predetermined value or when the frequency of the fluctuation of the gyro signal exceeds the predetermined value for a predetermined time. It may be determined that it has not been done.

Embodiment 8 FIG. In the fourth embodiment, when the transmission data of the unit 1 is received by the unit 2, whether or not the reception data is the GPS observation signal, the sensor signal, the position calculation result, or the remote control switch signal in the interruption processing 1 of the unit 2 Has been explained, but unit 1
The data exchanged between the unit and the unit 2 is, for example, ASCII
An embodiment in which a data sentence including a start code, an identification code, a data field, and an end code is used as a code format will be additionally described with reference to the drawings. FIG. 22A shows a data sentence type,
(B) shows the identification code, the contents of the data field, and the source unit. Note that the configuration of the device is the same as that of the fourth embodiment, and a description thereof will be omitted.

Next, in the operation of the interrupt processing 1 of the unit 2 of the navigation device, the processing content for determining the received data will be described. Note that the processing other than the processing related to data reception is the same as that of the fourth embodiment, and a description thereof will be omitted. As shown in FIG. 21A, the data sentence type of various data transmitted and received in the present embodiment includes a start code, an identification code, a data field, and an end code. This code is common to all data. In the identification code and the data field, as shown in FIG. 22B, a fixed length code determined for each data and predetermined information are written.
Therefore, in the interrupt processing 1 of the unit 2, the identification of the received data is determined by using the identification code of the data sentence of the received data, and the data indicated in the data field is determined according to the type of the identification code. They are stored sequentially.

Embodiment 9 In the first to fourth embodiments and the eighth embodiment, the operation has been described in the case where the unit 1 and the unit 2 are combined, and also in the case where each unit is independent. For example, if the communication specification is set to an ASCII code format and transmitted / received through the RS232C interface, even if the output data of the unit 1 is used by another device by connecting to a device other than the unit 1 and the unit 2 by a communication cable. good. Conversely, the other device and the unit 2 may be connected by a communication cable, and, for example, position information measured by the other device may be displayed on a map of the unit 2.

Embodiment 10 FIG. In the first to fourth embodiments, the control unit of the unit 2 calculates the position of the user (vehicle) based on the sensor signal or the GPS observation signal received from the unit 1 or the position calculated by the unit 1. Is described on a map, but it may be map-matched with road data in the map data so as to identify the position of the vehicle on the nearest road having a correlation with the position of the vehicle when the vehicle is used. . Further, the destination may be input from the input means of the unit 2 or the remote control unit, and guidance to the destination may be provided.

Embodiment 11 FIG. In the first to seventh embodiments, the unit 2 is described as a dedicated device. However, a personal computer in which an application for performing each process of the control unit of the unit 2 is stored in the hard disk as the unit 2 Use and G
PCMC and PS receiver and map data storage means
IA (Personal Computer Memo)
ry Card International Ass
Even if the IC cards conforming to the standard are incorporated in IC cards, predetermined navigation operations are performed.

Embodiment 12 FIG. In the second embodiment, the DC-connector at the end of the power output cable of the unit 1
When the IN plug 264 is connected to the DC-IN connector of the unit 2 and the cigarette lighter plug 171 of the unit 1 is inserted into the cigarette lighter socket of the vehicle, the unit 1
Power is supplied to the unit 2 and power is also supplied to the unit 2. However, in order to allow the user to switch the output voltage of the power supply unit 17 of the unit 1, an output voltage switching unit (not shown) The power supply means 17 may be connected to the means 17 to set the power supply voltage based on the output voltage switching means and supply the power supply voltage to the unit 2.

Embodiment 13 FIG. In the second embodiment, the DC-connector at the end of the power output cable of the unit 1
When the IN plug 264 is connected to the DC-IN connector of the unit 2 and the cigarette lighter plug 171 of the unit 1 is inserted into the cigarette lighter socket of the vehicle, the unit 1
When the power is also supplied to the unit 2, the unit 2 can be operated by the built-in battery (secondary battery) 261 without being supplied with the power from the unit 1, but the unit 2 is required. If no proper power supply voltage is supplied from the unit 1, the unit 2 requests the necessary power supply voltage to the unit 1 via the communication means 22,
Further, the power supply means 17 of the unit 1 may be changed to the power supply voltage requested via the communication means 16 and supplied to the unit 2.

Embodiment 14 FIG. In the sixth embodiment, as shown in FIG. 21, a GPS receiver 11 built in an IC card and a unit 1 including a vehicle speed sensor, a gyro 14 and a remote control unit 182 are combined with the unit 2. It was explained that it could be operated, but I
The GPS receiver 11 built in the C card and the unit 1 including only the remote control unit 182 and its signal processing means 18 are combined with the unit 2 so that the unit 2 receives the GPS received from a plurality of communication means. The position of the user may be displayed on a map based on the observation signal, or the operation may be performed based on a remote control switch signal.

[0072]

As described above, the present invention has the following effects.

According to the navigation device of the first configuration of the present invention, when the navigation device is mounted on a vehicle, only the output signals of the vehicle speed sensors provided in all the vehicles are input to the device. Since the position of the user can be calculated only by the user, the wiring work can be further simplified, and the device can be easily transferred to another vehicle. Also, when indoors or in portable use, unnecessary sensors and signal processing means are omitted, and a unit that measures the position of the user using only GPS is prepared.
The device can be installed indoors or carried to measure the position of the user and displayed on a map, and the device can be made smaller and lighter than when it is used in a vehicle, making it suitable for carrying. Further, since the navigation device can be remotely controlled by a remote controller, the operability when using the vehicle is improved.

According to the navigation apparatus of the second configuration of the present invention, the calculation of the position of the user based on the GPS observation signal, the vehicle speed signal and the gyro output signal is performed by the units 1 and 2 constituting the navigation apparatus. When the unit 1 calculates the position or the like of the user, the unit 2 operates so as not to calculate the position or the like.
Navigation can be performed by a combination of.

According to the navigation apparatus of the third configuration of the present invention, since there are a plurality of communication means between the units constituting the navigation apparatus, and automatic switching to the effective communication means is performed, the navigation apparatus is switched to another vehicle. If the communication is abnormal or disabled during use outside the vehicle or during use outside the vehicle, information can be exchanged again between the units by changing the connection between the units to another communication system. This makes it difficult for the device to become inoperable, and the user can use the device with peace of mind.

According to the navigation device of the fourth configuration of the present invention, the GPS observation signal, the vehicle speed signal, the gyro output signal, and the remote control switch signal can be distributed to a plurality of units 1. Unit 2
Can be used together, so that navigation can be performed by a combination of the unit 1 and the unit 2 having a function required by the user.

According to the navigation device having the fifth configuration of the present invention, even if the navigation device can calculate the position of the user based on the GPS observation signal, the vehicle speed signal, and the gyro output signal, the navigation device is provided in the vehicle. If the user does not connect the vehicle speed signal cable to the device, the system automatically detects that the vehicle speed signal cable is not connected, calculates the user's position without using the vehicle speed signal, and maps Since it can be displayed above, the navigation device is easy for the user to install in the vehicle and easy to remove.

According to the navigation device of the sixth configuration of the present invention, even if the combination of the unit 1 and the unit 2 that exchange predetermined data is changed, the user does not change the setting of the navigation device at all. Since the navigation device operates, the navigation device is easy to handle for the user.

According to the navigation device of the seventh configuration of the present invention, if the device conforms to a predetermined communication specification, the unit constituting the navigation device can be connected to another device possessed by the user. Also, since the predetermined communication specifications are in the ASCII code format and are general-purpose with the RS232C interface, the user can use the navigation device for other purposes. Thereby, the cost performance of the navigation device is high.

According to the navigation apparatus having the eighth configuration of the present invention, since real-time processing such as sensor signal processing is performed by the unit 1, non-real-time processing such as map display and map matching can be easily performed on a personal computer. Highly accurate location information can be presented to the user. In addition, since a personal computer is used as the unit 2, the software can be easily upgraded by the user, and applications other than navigation, such as a word processor and a spreadsheet, can be performed, and the user can meet various needs. If a palmtop personal computer or a notebook personal computer is used, portability is improved.

According to the navigation device having the ninth configuration of the present invention, when the cigarette lighter plug of the unit 1 is inserted into the cigarette lighter socket of the vehicle, the power is supplied to the unit 1 and the power supply voltage specified by the user is supplied. Since power can also be supplied to the unit 2, even when a device owned by a user equivalent to the unit 2 is used in combination with the unit 1, power can be supplied to all units from a single power supply.

According to the navigation apparatus having the tenth configuration of the present invention, the unit 2 can operate with the built-in battery (secondary battery) even when power is not supplied from the unit 1, so that the navigation can be performed even in a place without power. Equipment can be used. When the unit 2 is supplied with a power supply voltage from the unit 1, when the unit 1 requests a required power supply voltage from the unit 1, the requested power supply voltage is obtained from the unit 1. Even if the device that performs the above is used in combination with the unit 1, power can be supplied from a single power source to all the units.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a navigation device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the navigation device according to the first embodiment of the present invention.

FIG. 3 is a flowchart showing the processing contents of a main routine of a unit 2 regarding the operation of the navigation device of the present invention.

FIG. 4 shows the operation of the navigation device of the present invention.
9 is a flowchart showing processing contents of an interrupt processing 1 of a unit 2;

FIG. 5 is a block diagram illustrating a configuration of a navigation device according to a second embodiment of the present invention.

FIG. 6 is a perspective view of a navigation device according to a second embodiment of the present invention.

FIG. 7 is a flowchart showing the processing contents of the main routine of the unit 1 for the operation of the navigation device of the present invention.

FIG. 8 is a flowchart showing the processing contents of an interrupt processing 2 of the unit 1 regarding the operation of the navigation device of the present invention.

FIG. 9 is a flowchart showing the processing contents of an interrupt processing 3 of the unit 1 regarding the operation of the navigation device of the present invention.

FIG. 10 is a flowchart showing the processing contents of a main routine of the unit 2 for the operation of the navigation device of the present invention.

FIG. 11 is a flowchart showing the processing contents of an interrupt processing 1 of a unit 2 regarding the operation of the navigation device of the present invention.

FIG. 12 is a flowchart showing the processing contents of a main routine of the unit 1 regarding the operation of the navigation device of the present invention.

FIG. 13 is a block diagram illustrating a configuration of a navigation device according to a fourth embodiment of the present invention.

FIG. 14 is a perspective view of a navigation device according to a fourth embodiment of the present invention.

FIG. 15 is a flowchart showing the processing contents of the main routine of the unit 1 regarding the operation of the navigation device of the present invention.

FIG. 16 is a flowchart showing the processing contents of an interrupt processing 4 of the unit 1 regarding the operation of the navigation device of the present invention.

FIG. 17 is a flowchart showing the processing contents of the main routine of the unit 2 for the operation of the navigation device of the present invention.

FIG. 18 is a flowchart showing the processing contents of an interrupt processing 1 of a unit 2 regarding the operation of the navigation device of the present invention.

FIG. 19 is a block diagram illustrating a configuration of a navigation device according to a fifth embodiment of the present invention.

FIG. 20 is a perspective view of a navigation device according to a fifth embodiment of the present invention.

FIG. 21 is a diagram illustrating an example of a combination of a unit 1 and a unit 2 with respect to the operation of the navigation device of the present invention.

FIG. 22 is a diagram showing a part of a communication specification between the unit 1 and the unit 2 regarding the operation of the navigation device of the present invention.

FIG. 23 is a block diagram showing a configuration of a conventional navigation device.

FIG. 24 is a block diagram showing a configuration of a conventional navigation device.

[Explanation of symbols]

1 unit 1, 2 unit 2, 11 GPS receiver, 12 GPS antenna, 13 sensor signal processing means, 14 gyro, 15 control means, 16 communication means, 17 power supply means, 18 remote control switch signal processing means, 21 map data storage means , 22 communication means, 2
3 display means, 24 input means, 25 control means, 18
1 Remote control receiver, 182 Remote control unit.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yoshihiko Utsui 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation

Claims (10)

[Claims] 1. A vehicle speed sensor that outputs a signal according to a moving distance of a user, a relative direction sensor that outputs a signal according to a change in the traveling direction of the user, and a user using a satellite. A unit that performs real-time processing such as sensor signal processing and remote control signal processing in a navigation device that displays a user's position and the like measured by at least one of observation signals of a GPS receiver that observes the position and the like of the GPS receiver on a map 1 and a unit 2 for performing non-real-time processing such as map display using built-in map data.
The vehicle has at least one of the vehicle speed sensor, the relative direction sensor, the GPS receiver, and the remote control unit, a signal processing unit, and a communication unit, and transmits each signal from the communication unit. A navigation device that calculates a user's position or the like based on either a sensor signal or a GPS observation signal received via the remote controller, or performs a predetermined operation based on a received remote operation signal. 2. The unit 1 calculates a user's position and the like based on both sensor signals of a vehicle speed sensor and a relative azimuth sensor and an observation signal of a GPS receiver, and transmits the calculated position to the unit 2. The navigation device according to claim 1, wherein the unit (2) does not calculate the position when receiving the position of the user from the unit (1). 3. The navigation device according to claim 1, wherein each of the units 1 and 2 includes a plurality of communication units and an automatic communication switching unit for automatically switching to an effective communication unit. . 4. The unit 2 has a plurality of communication means,
2. The navigation device according to claim 1, wherein data is transmitted and received between communication units of the plurality of units. 5. A vehicle speed sensor connection determining means for determining whether or not the vehicle speed sensor is connected based on both sensor signals of a vehicle speed sensor and a relative direction sensor and an observation signal of a GPS receiver, and wherein the vehicle speed sensor is not connected. If it is determined that the position information of the user is obtained only by the GPS observation signal,
3. The navigation apparatus according to claim 1, wherein the navigation apparatus calculates the distance from a GPS observation signal and a signal from the relative direction sensor. 6. The data exchanged between the unit 1 and the unit 2 includes a fixed length identification code representing the type of data in a data sentence. 3. The navigation apparatus according to claim 1, wherein processing such as GPS observation signal processing, sensor signal processing, remote control signal processing, and position calculation is performed in accordance with. 7. The unit 1 and the unit 2 may operate independently, and may be any other device provided with a communication means conforming to a communication specification between the unit 1 and the unit 2, if the unit 1 or the unit 2 is provided. 7. The navigation device according to claim 6, wherein the navigation device can be used in combination with 2. 8. A unit 2 is a personal computer in which map data is stored in a built-in storage means. The unit 2 is a personal computer based on at least one of sensor signals of a vehicle speed sensor and a relative azimuth sensor and an observation signal of a GPS receiver. The navigation device according to any one of claims 1 to 7, wherein a position of the user is identified on a road by performing a map matching between the position and the map data. 9. The unit according to claim 1, wherein the unit includes a power supply unit of an output voltage variable type and an output voltage switching unit, and supplies a power supply voltage according to the output voltage switching unit to the unit. The navigation device according to any one of claims 7 to 10. 10. When no power is supplied, the unit 2 operates with a built-in battery (battery) and requests the unit 1 via a communication means to supply a necessary power supply voltage. The navigation device according to any one of claims 1 to 7, wherein the unit 1 having received the power supply request via the means outputs the requested power supply voltage.