JPH1062185A - On-vehicle navigation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable accurate information-transmission not only acoustically but also visually, by providing a navigation display part with touch panel function for character input. SOLUTION: A display part 14 equipped with a touch panel not only displays navigation information but also has touch panel function wherein keys are arranged on an image plane by a command input from a user interface 16. The display of a display part 14 is a navigation information displaying image in the ordinary time. When the touch panel function is employed, alphabet and numerical character key arrangement or Japanese alphabetical order key arrangement can be selected. Character information inputted by contact key touch is inputted in a navigation unit 12, converted to a specific code signal, and transmitted as a radiowave signal via a GPS data communication modem 2 and a radio part 3. Thereby not only transmission of voice but also transmission of character display are enabled by radiowaves between vehicles.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle navigation system, and more particularly to a vehicle navigation system having a character input function.

[0002]

2. Description of the Related Art In-vehicle navigation systems use GPS.
Radio signals from satellites are received by a GPS antenna attached to the vehicle, the position of the vehicle is obtained based on the received signal, and the obtained vehicle position is displayed on a display such as a liquid crystal display together with map information sent from a map database. Is displayed. Further, the actual road position and the map road position are matched by performing a map matching process. The position of the host vehicle can be obtained with higher accuracy by referring to sensor outputs obtained from an acceleration sensor such as a gyro sensor and a vehicle speed sensor installed in the vehicle. Such a system is called hybrid navigation.

[0003] When a plurality of vehicles are traveling in a group, there is a demand for displaying position information of other vehicles together on a display, for example, when it is desired to mutually confirm the vehicle positions or when the vehicle has separated. Japanese Patent Application Laid-Open No. 4-70999 discloses a wireless navigation system capable of obtaining position information not only of own position information but also of a predetermined specific vehicle. This system has a transmission function that one vehicle obtains its own position information based on a GPS signal for position identification received from a GPS satellite and transmits the obtained position information as a radio signal,
Other vehicles receive the radio signal and display position information of the one vehicle on a display.

In the above-described on-vehicle navigation system, communication with a specific other vehicle is performed by transmitting transmission data provided with a call sign assigned to each radio device. The communication with the other vehicle is usually performed by voice, and for example, a break at a halfway point to the destination is discussed.

[0005]

However, when wireless communication is being performed, it may be difficult for the user to hear the radio wave depending on the surrounding environment and conditions of the vehicle receiving the radio wave. For example, it is difficult to hear when the ambient noise is large, such as in a tunnel, and there is also a case where a passenger talks and misses. As described above, in the conventional navigation system, accurate information transmission may be difficult due to only auditory transmission.

It is an object of the present invention to provide an in-vehicle navigation system that enables accurate information transmission by enabling information transmission not only audibly but also visually.

[0007]

In order to solve the above-mentioned problems, an on-vehicle navigation system according to the present invention obtains a position of a vehicle based on a GPS signal from a GPS satellite or a mounted sensor signal, and obtains the determined vehicle position. While displaying the car position along with the map information and the navigation information on the display,
In a vehicle-mounted navigation system that performs communication by transmitting a radio wave message to a wireless device of another vehicle, the display unit has a display function of displaying the navigation information,
It has a touch panel key function in which character input keys are arranged.

Here, the display unit is switchable between the display function and the touch panel key function, and outputs the received message information as voice and displays the message information on the display unit.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram showing one embodiment of a vehicle-mounted navigation system according to the present invention.
In the present embodiment, the navigation unit 1 shown in FIG.
A system including the S communication modem unit 2 and the wireless unit 3 is mounted on a vehicle as a mobile body, and calculates the own vehicle position and transmits and receives the obtained own vehicle position information according to the procedure described below.

[0010] A GPS radio signal from a GPS satellite is a GP signal.
The signal is received by the S antenna 11A and transmitted to the navigation unit 12 constituting the GPS system. The navigation unit 12 obtains own vehicle position information such as latitude and longitude information of the own vehicle based on the received GPS signal and a sensor output signal obtained from an autonomous navigation sensor 13 such as an acceleration sensor or a vehicle speed sensor. The navigation unit 12 reads map information of a necessary area from map information stored in a storage medium 15 such as a CD-ROM, and detects own vehicle position information obtained by the navigation unit 12 and map information from the storage medium 15. (With map matching) and display device 14 with touch panel
Display on the screen. The user interface 16
An operation unit for instructing the operation of the present system, which includes keys, push buttons, and the like. For example, a remote controller or a touch panel is used.

In the present embodiment, the display device 14 with a touch panel not only displays navigation information,
It has a touch panel function in which keys are arranged on the screen in accordance with an instruction input from the user interface 16.

The display on the display unit 14 is normally displayed as shown in FIG.
As shown in FIG. 2A, when the navigation information display screen is used, when the touch panel function is used, each key as shown in FIG. 2B has an alphabet and numeric key arrangement and each key as shown in FIG. Can select any of the key arrangements in alphabetical order. Further, the key layout may be a JIS layout used in a normal personal computer.

Character information can be input by touching a desired key of the key arrangement of the touch panel having such a configuration, and the input character information (including symbol and graphic information) can be used as a CPU function. Is input to the navigation unit 12 having The navigation unit 12 converts the input character information into a predetermined code signal and transmits it as a radio signal via the GPS data communication modem 2 and the wireless unit 3.

The navigation unit 12 further includes an F
M multiplex antenna 11B, radio beacon receiving antenna 11
C or VICS by optical beacon receiving antenna 11D
The information is received, and a detour course or the like is searched based on the received VICS information. The GPS data communication modem unit 2 sends the vehicle position information and the course information obtained by the navigation unit 12 in the form of a radio signal via the wireless device 31 of the wireless unit 3 and the wireless antenna 33, and sends the information to other vehicles. To transmit the vehicle position information.

The GPS data communication modem unit 2 comprises a GPS data communication modem unit 21 and a modulation / demodulation circuit 22, and sends information transmitted from the navigation unit 12 via a serial I / F to the radio unit 3. Radio unit 3
Has a radio unit 31, a modulation / demodulation circuit 32 and a radio antenna 33, and transmits position information and course information in the form of radio signals. In the configuration shown in FIG. 1, at the time of reception, received data is transmitted to the navigation unit 12 via the radio unit 3 and the GPS data communication modem unit 2. The modulation / demodulation circuits 22 and 32 are connected by a packet communication line (audio data).

As described above, in the present embodiment, the display unit (monitor) of the navigation system is used, and the display unit is selectively used for the navigation information display function and the character input touch panel function. Input can be performed while looking at the packet screen, and used for displaying navigation information when character input is completed.

[0017]

As described above, the on-vehicle navigation system of the present invention is provided with a touch panel function for inputting characters on the navigation display unit, and is normally used for displaying navigation information to input character information. When desired, a touch panel display for character input is used, and information is transmitted via a wireless device by key touch input. Therefore, at the time of transmitting information between the wireless devices mounted on the vehicle, it is possible to transmit not only by voice but also by character display, thereby enabling audible and visual information recognition and accurate information transmission. .

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a vehicle-mounted navigation system according to the present invention.

FIG. 2 is a diagram illustrating an embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 navigation unit 2 GPS communication modem unit 3 radio unit 11A GPS antenna 11B FM multiplex antenna 11C radio beacon reception antenna 11D optical beacon reception antenna 12 navigation unit 12 13 autonomous navigation sensor 14 display device with touch panel 15 storage medium 16 user interface 21 GPS Communication modem unit 22, 32 Modulation / demodulation circuit 31 Radio unit 33 Radio antenna

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location G10L 3/00 G10L 3/00 Q

Claims (3)

[Claims] 1. A vehicle position is obtained based on a GPS signal from a GPS satellite or a mounted sensor signal, and the obtained vehicle position is displayed on a display unit together with map information and navigation information. An in-vehicle navigation system that communicates by transmitting radio waves to a device, wherein the display unit has a display function of displaying the navigation information and a touch panel key function in which character input keys are arranged. In-vehicle navigation system. 2. The in-vehicle navigation system according to claim 1, wherein the display unit is switchable between the display function and the touch panel key function. 3. The in-vehicle navigation system according to claim 1, wherein the received message information is output as voice and displayed on the display unit.