JP3996118B2 - Car navigation system - Google Patents

Description

  The present invention relates to an in-vehicle navigation device having a toll road fee payment guidance function.

  FIG. 3 is a block diagram showing the configuration of a conventional in-vehicle navigation device. Reference numeral 1 denotes a signal processing unit (CPU), which includes a microprocessor and its peripheral circuits, and receives a storage signal and the like between an input terminal for inputting various signals and an information signal storage unit for arithmetic processing in the microprocessor. An output terminal and the like for outputting the transmission / reception terminal and the signal processing result to the display unit and the audio unit are provided.

Reference numeral 2 denotes a CD-ROM (Compact Disc-Read Only Memory) reader, which outputs a digital signal such as a digital map by demodulating a recording signal from a CD-ROM on which a driving unit for driving a CD and a digital map are recorded. It consists of parts.
3 is a GPS (Global Positioning System) receiver equipped with a low-noise receiving circuit and carrying time correction data, ranging signals, orbit prediction data, etc. for the L band (two waves in the 1.2 GHz band and 1.5 GHz band). A demodulator or the like that demodulates a PN (Peudo Noise) code is configured to output positional information of the receiver on the ground.

A gyro sensor 4 includes a detection unit (master unit) that detects geomagnetism, and a slave gyro unit that maintains the inertial direction based on the detection result. It consists of an output unit.
Reference numeral 5 denotes a vehicle speed sensor that outputs a pulse (vehicle speed data) that is composed of a multipolar magnet that rotates in accordance with the vehicle speed, a magnetoresistive element, and the like that is proportional to the rotation of the wheel.
Reference numeral 6 denotes a map data selection unit, which is provided on a display surface of the display 8 and is operated by a touch switch (contact operation of display character information with a fingertip) or a numeric keypad (a plurality of individual switches) arranged on a panel or the like. It can be configured to select functions such as initial setting of the current position on the displayed map, input of a travel route based on a travel plan, etc., and enlargement / reduction of the map being monitored or display of other pages. Is done.

A display processing unit 7 includes a video signal generation circuit and a display driver circuit. The digital map signal and the vehicle position signal output from the signal processing unit 1 are converted into a video signal.
Reference numeral 8 denotes a display, which is composed of an LCD or a CRT, and is housed together with other components in a cabinet shaped so as to be optimally mounted on a vehicle.
An audio processing unit 9 is composed of a DA conversion circuit, an audio synthesis circuit, and the like. The digital audio signal output from the signal processing unit 1 is converted and amplified into an analog audio signal, and the speaker 10 is driven by the audio signal. .
Reference numeral 11 denotes a road data storage unit, which includes a RAM and a ROM circuit, and temporarily stores travel information such as a part of the digital map and the vehicle position, and exchanges signals with the signal processing unit 1. Is called.

The operation in the above configuration will be described.
Radio waves from the navigation satellite received by the antenna (ANT) are received and processed by the GPS receiver 3 and output as position data of XY coordinates.
The digital map signal from the CD-ROM reader 2 is output as map data based on an instruction signal (such as a switch operation by the user's will) from the map data selection unit, and the position data and map data are subjected to signal processing. The collation process is performed by the unit 1 and temporarily stored in the road data storage unit.

Then, the digital map signal and the vehicle position signal are output from the signal processing unit 1, converted into a video signal by the display unit 7, and a destination road guidance display according to the current position and initial setting (for example, on the map of the display unit 8) Arrow) etc. are displayed.
On the other hand, when the radio wave from the navigation satellite is blocked and cannot be received in a tunnel or a valley of a high-rise building or the like, both the data output of the azimuth data from the gyro sensor 4 and the vehicle speed data from the vehicle speed sensor 5 are input to the signal processing unit 1. Then, processing according to the XY coordinate output of the GPS receiver 3 is performed, and the current position is displayed on the map of the display unit 8.
In addition, the signal processing unit 1 performs a matching process according to an instruction input such as a digital map signal, a vehicle position signal, and a destination road guide that is initialized, and outputs a digital voice signal as a processing result to the voice unit 9. The sound signal is converted and amplified into an analog sound signal, the sound signal is output to the speaker 10, and sound such as road guidance is output from the speaker.

As described above, functions such as display of the current position on the map and destination road guidance have been put into practical use. However, when leaving a toll road, a toll is often prepared. In such a case, there is a problem that it takes time to prepare the fee and causes traffic congestion.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a navigation device that makes a notification of tolls on a toll road before arriving at a toll booth and prepares payment in advance during that time.

The present invention relates to fee information reading means for reading fee information from a recording medium in which map data and toll road fee information for each vehicle type are recorded, display means capable of displaying a map, and a map displayed on the display means A touch switch for performing an operation related to display; a vehicle type that can be input by the touch switch; a vehicle type storage unit that stores the input vehicle type; and a travel route from a departure point to a destination based on map data Based on the toll road information read by the toll information reading means and the vehicle type stored in the vehicle type storage means after the search means has searched for the travel route, And control means for controlling to notify the toll information of the section from entry to exit of the toll road on the travel route at least And features.
Further, the present invention relates to a charge information reading means for reading charge information from a recording medium in which map data and toll road charge information for each vehicle type are recorded, a display means capable of displaying a map, and a map display displayed on the display means. A touch switch for operation, a vehicle type can be input by the touch switch, a vehicle type storage means for storing the input vehicle type, and a travel route from the departure point to the destination is searched based on the map data Based on the toll road information to be read by the toll information reading means and the vehicle type stored in the vehicle type storage means after the search route is searched by the searching means. It is characterized by comprising a controller that controls to notify the charge information tollgate for payment of toll road on the route .
Further, the present invention relates to a charge information reading means for reading charge information from a recording medium in which map data and toll road charge information for each vehicle type are recorded, a display means capable of displaying a map, and a map display displayed on the display means. A touch switch for operation, a vehicle type can be input by the touch switch, a vehicle type storage means for storing the input vehicle type, and a travel route from the departure point to the destination is searched based on the map data Based on the toll road information to be read by the toll information reading means and the vehicle type stored in the vehicle type storage means after the search route is searched by the searching means. characterized in that it and a control means for notifying the fee information in the section up to the toll booth to pay from the entry of the toll road on the route To.

  In addition, the information processing device further includes a fee information storage unit that stores toll road fee information, and the fee information reading unit stores only toll road fee information according to the vehicle type stored in the vehicle type storage unit from a recording medium. It reads and memorize | stores in the said charge information storage means.

  According to the present invention, the toll road toll display and the voice notification are made before arrival at the toll gate, and payment can be prepared in advance. As a result, it is possible to reduce the amount of time required to prepare for payment, such as searching for and taking out cash at the toll booth, so it can be expected to ease traffic congestion. It is possible to prevent and output fee information necessary only for the vehicle.

Next, an embodiment of the present invention will be described. FIG. 1 is a block diagram showing the configuration of the embodiment of the present invention, and FIG. 2 is a flowchart showing a signal processing procedure of the present invention.
In addition, about the structure similar to the structure shown in FIG. 3, the same number is attached | subjected and description is abbreviate | omitted.

First, FIG. 1 will be described.
A toll table storage unit 12 includes a RAM, a ROM circuit, and the like, and is configured to be able to write and read toll data from a toll table on many toll roads.
The vehicle position on the map, the destination road guidance, and the like are the same as those described above (conventional technology), and a description thereof will be omitted. The operation of displaying the toll road usage fee will be described.

The usage fee table for each tollgate on the national toll road has enormous information content, and it is conceivable that it is recorded on a recording medium such as a CD-ROM or an IC card and supplied as information to an unspecified number of users.
In the present embodiment, by using the CD-ROM medium and the CD-ROM reading unit 2, a toll road for the national toll road is written by the CPU 1 according to the operation of the map data selection unit 6 and stored in the toll table storage unit 12. Similarly, the road map data is also written by the CPU 1 and stored in the road data storage unit 11, whereby basic information is accumulated in the navigation device.

  Then, the fee is automatically determined by comparing the position information by the GPS receiver 3 from the entrance to the exit of each toll gate on the toll road and the road map data (the toll gate location is verified by the road data storage unit 11) between them. The signal processing unit 1 performs signal processing such as identification between places (between entry and exit) and retrieval of road usage charges in the charge table storage unit 12 based on the result. As a result, the usage fee is displayed on the display unit 8. The contents are notified from the speaker 10 by voice.

In general, the toll road price list categorizes the tolls between toll gates by vehicle type (for example, large vehicles, large buses, special vehicles, ordinary passenger cars, motorcycles, etc.).
Therefore, the designation of which car model the car belongs to is stored in the CPU 1 or the like, thereby preventing the output of unnecessary fee information other than the car model (character display, voice notification) and necessary only for the car. Output of accurate toll information is desirable for traffic safety because it can concentrate more on driving.
From such a point of view, the vehicle type classification of the own vehicle is a dual-purpose switch (for example, a touch switch 6 configured by diode matrix connection) that also functions (multiple functions) such as a plurality of input switches constituting the map data selection unit 6. By first inputting to the CPU 1, it can be realized by performing signal processing as shown in the embodiment of FIG.

FIG. 2 shows the flow of an information signal processed by the signal processing unit 1.
In step S11, a registration signal is transferred to the navigation device using a CD-ROM or the like on which a toll road for a nationwide toll road is recorded.
In step S12, designation is made based on the switch operation state of the map data selection unit 6 so as to register only the fee table in which the vehicle type (own vehicle) is selected and designated from all the data of the registered fee table. Detect the vehicle type.

By this operation, the registration process is performed by narrowing down to the price list designated by the vehicle type.
Next, in step S13, all the registration data of the toll table in which the vehicle type is designated is ready for reading at any time, and the initial registration is completed.
Next, in step S14, the designated place of the toll gate to be paid is automatically input before it arrives as it approaches the designated place (by the operation of the proximity sensor of the navigation device) based on the initial input memory of the travel route plan. The
Then, based on this input, the fee specified for the vehicle type to be paid is retrieved, displayed from step S15, and notified.

  As described above, according to the present embodiment, the registration of the toll road for the national toll road is performed by limiting the vehicle type, and unnecessary information other than the designated vehicle type is not stored. Less capacity is required.

The block diagram which shows the structure of the Example of this invention. The flowchart which shows the signal processing procedure of the Example of this invention. The block diagram which shows the structure of the conventional vehicle-mounted navigation apparatus.

Explanation of symbols

1. Signal processing unit (CPU)
2 ... CD-ROM reader 3 ... GPS receiver 4 ... Gyro sensor 5 ... Vehicle speed sensor 6 ... Map data selection unit 7 ... ··· Display unit 8 ··· Display 9 ··· Audio unit 10 ··· Speaker 11 ··· Road data storage unit 12 ··· Toll table storage unit

Claims (4)

Toll information reading means for reading the toll information from the recording medium in which the toll road toll information for each map type and vehicle type is recorded;
Display means capable of displaying a map;
A touch switch for performing operations related to map display displayed on the display means;
Vehicle type storage means for inputting a vehicle type by the touch switch, and storing the input vehicle type;
Search means for searching a travel route from the departure point to the destination based on the map data;
After the travel route is searched by the search means, based on the toll road fee information read by the toll information reading means and the vehicle type stored in the vehicle type storage means, at least the toll road on the travel route A vehicle-mounted navigation device comprising: control means for controlling to notify charge information of a section from entry to exit of the vehicle. Toll information reading means for reading the toll information from the recording medium in which the toll road toll information for each map type and vehicle type is recorded;
Display means capable of displaying a map;
A touch switch for performing operations related to map display displayed on the display means;
Vehicle type storage means for inputting a vehicle type by the touch switch, and storing the input vehicle type;
Search means for searching a travel route from the departure point to the destination based on the map data;
After the travel route is searched by the search means, based on the toll road fee information read by the toll information reading means and the vehicle type stored in the vehicle type storage means, at least the toll road on the travel route And a control means for controlling to notify the charge information of the toll booth to be paid by the vehicle-mounted navigation device. Toll information reading means for reading the toll information from the recording medium in which the toll road toll information for each map type and vehicle type is recorded;
Display means capable of displaying a map;
A touch switch for performing operations related to map display displayed on the display means;
Vehicle type storage means for inputting a vehicle type by the touch switch, and storing the input vehicle type;
Search means for searching a travel route from the departure point to the destination based on the map data;
After the travel route is searched by the search means, based on the toll road fee information read by the toll information reading means and the vehicle type stored in the vehicle type storage means, at least the toll road on the travel route And a control means for notifying the charge information of the section from the entrance of the vehicle to the toll booth to be paid . A charge storage means for storing toll road charge information;
The said charge reading means reads only the charge information of the toll road according to the vehicle type memorize | stored in the said vehicle classification memory | storage means from a recording medium, and memorize | stores in the said fee information memory | storage means. The vehicle-mounted navigation device according to any one of the above.