JP3260392B2 - In-vehicle information transmission / reception system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle information transmitting / receiving system for transmitting / receiving information to / from an on-vehicle navigator.

[0002]

2. Description of the Related Art FIG. 9 shows a conventional information transmitting / receiving system disclosed in, for example, Japanese Patent Application Laid-Open No. 63-5376.
In the figure, 91 is a transmission antenna, 92 is a transmission output unit,
93 is a modulator, 94 is a scanner for sequentially transmitting information, and 95 is a memory on the transmitter side for storing living information such as map information and product information. 96 is a receiving antenna, 97 is an RF amplifier, 98 is a demodulator, 99 is a signal processor, 100 is a selector, 101 is a frame memory for temporarily storing information, 102 is a controller, and 103 is a display. is there.

Next, the operation will be described. In the transmitter section of FIG. 9, various information is stored in the ROM in the memory 95 of the transmitter for each content, and the scanning section 94 sequentially scans and transmits these pieces of information. Therefore, the information in the memory is converted from the parallel information to the serial information and transmitted, and the signal is input to the modulator 93. The modulation section 93 converts the information signal data into an RF signal, is sent to the transmission output section 92, and radiates as radio waves from the transmission antenna 91.

On the other hand, in the receiver, a digitally modulated RF signal is received by a receiving antenna 96, and an RF amplifier 9
The signal is amplified to a level that can be demodulated by 7 and converted into a serial digital signal by the demodulation unit 98. The signal processing unit 99 serves to extract information for each content, and the selection unit 100
According to this instruction, necessary data is extracted and stored in the frame memory 101. The control unit 102 includes a display unit 103
Is selected from the frame memory 101 and displayed. Therefore, only a necessary part of the transmission signal is received and taken into the frame memory 101, so that only desired information can be selected.

[0005]

A conventional on-vehicle information transmitting / receiving system is configured to wirelessly transmit map information and living information from a sign post, receive the information by an on-vehicle receiver, and display the information. Therefore, there is a problem that it is necessary to install a signpost on the road side, the transmission distance is limited, and the range in which the information can be received is limited.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an in-vehicle transmission / reception system capable of retrieving information from an arbitrary location and storing only necessary information in a memory of a receiving device. The purpose is to gain.

[0007]

An on-vehicle information transmitting / receiving system according to the present invention has a function of dialing a center station storing information through a telephone line, and an arbitrary area code such as a vehicle position and a destination. By transmitting to a center station via a telephone line, a function of receiving, storing and displaying a map, traffic information, and living information of an arbitrary area from the center station, a function of calculating the position of the own vehicle, It has a function of selecting a center station based on the position of the vehicle and dialing the selected center station via a telephone line.

[0008]

The vehicle transmitting / receiving system according to the present invention allows a user to dial a center station as necessary.
After being connected to the center station and searching for necessary information, the vehicle receives the information and stores or displays it. In addition, the selection of the center station can select an arbitrary area such as the own vehicle position or the destination.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a transmitting / receiving antenna on the center station side, which is connected to a transmitting / receiving unit 2, and the transmitting / receiving unit 2 is connected to a modulation / demodulation unit 3. The modem 3 is connected to the communication code encoder 9 and the position / information code receiver 10.

[0010] The communication code encoding unit 9 is connected to the storage unit 5 . The position / information code receiving unit 10 is connected to the modulation / demodulation unit 3 and the selection unit 4. The selecting unit 4 is connected to the position / information code receiving unit 10 and the storage unit 5. The storage unit 5 is connected to the selection unit 4 and the communication code encoding unit 9.

Reference numeral 6 denotes a vehicle-side transmitting / receiving antenna, which is connected to the transmitting / receiving unit 7. The transmission / reception unit 7 is connected to the modulation / demodulation unit 8, the dial unit 16, and the transmission / reception antenna 1, respectively.
The modulation / demodulation unit 8 includes a transmission / reception unit 7 and a communication code decoding unit 14.
, And the position and information code transmission unit 15. The communication code decoder 14 is connected to the modem 8 and the frame memory 11. The frame memory 11 includes a communication code decoding unit 14, a display control unit 12, and a display unit 1.
3 respectively. The display unit 13 is connected to the frame memory 11.

The display control unit 12 includes a frame memory 1
1 and to the system control unit 18. The position / information code transmission section 15 is connected to the modulation / demodulation section 8 and the system control section 18. The dial unit 16 is connected to the transmission / reception unit 7 and the system control unit 18.

Reference numeral 17 denotes a touch panel input unit, which is connected to the system control unit 18. The system control unit 18 is connected to the touch panel input unit 17, the display control unit 12, the position and information code transmission unit 15, the dial unit 16, and the vehicle position calculation unit 19, respectively. Reference numeral 19 denotes a vehicle position calculation unit, which includes a system control unit 18, a GPS receiver 20, and a wheel speed sensor 21.
Is connected to the geomagnetic sensor 22.

The GPS receiver 20 is connected to the vehicle position calculation unit 19, the wheel speed sensor 21 is connected to the vehicle position calculation unit 19, and the geomagnetic sensor 22 is connected to the vehicle position calculation unit 19. You.

Next, the flow chart of FIG. 2 and FIGS.
The operation will be described including the respective information screens. When the system is started when information is needed on the vehicle side,
The menu screen shown in is displayed. When the current location is selected, the system control unit 18 receives information on the latitude, longitude, and azimuth of the current location from the host vehicle position calculation unit 19. The information of the latitude, longitude, and direction is obtained from the GPS receiver 20 , the wheel speed sensor 2
1. Calculate from the signal from the geomagnetic sensor 22.

The system control unit 18 selects a center station sharing the current position from the information on the current position, and sends the center station number to the dial unit 16. The center station number is transmitted via the transmission / reception unit 7 and the transmission / reception antenna 6. The transmitted center station number is captured by the telephone ground station and connected to the center station. When the connection is completed, the system control unit 18 on the vehicle side transmits the district code via the position 15, the information code transmission unit 15, the modulation / demodulation unit 8, the transmission / reception unit 7, and the transmission / reception antenna 1.

The position / information code is received by the position / information code receiving unit 10 via the transmitting / receiving antenna 1, transmitting / receiving unit 2, and modem unit 3 on the center side. Based on the position and the information code, the selector 4 on the center side selects necessary information from the storage 5 and sends it to the communication code encoder 9.

The information encoded in the communication code is sent out via the modulation / demodulation unit 3, the transmission / reception unit 2, and the transmission / reception antenna 1. The transmitted information is captured by the transmitting / receiving antenna 6 on the vehicle side, and is decoded into the original information by the communication code decoding unit 14 via the transmitting / receiving unit 7 and the modem unit 8. The decoded information is stored in the frame memory 11 and displayed on the display unit 13 in response to an instruction from the display control unit 12. Normally, a map near the current location as shown in FIG. 4 is displayed, and the map can be enlarged by touch switches displayed on the drawing.
Switch to display of reduced and nearby areas.

If the user wants to know the traffic information of the area, he can select the traffic information by touch switch.
As shown in FIG. 5, traffic information corresponding to the displayed map is displayed. When the life information is selected by the touch switch, a menu screen as shown in FIG. 6 is displayed. By selecting a desired item, a schematic diagram as shown in FIG.
Information such as phone numbers is displayed.

An instruction for switching these screens is input from the touch panel input unit 17 and the system control unit 1
8, the position and information code are transmitted through the transmission / reception unit 15, the modulation / demodulation unit 8, the transmission / reception unit 7, and the transmission / reception antenna 6 via the transmission / reception antenna 1, the transmission / reception unit 2, and the modulation / demodulation unit 3 on the center side. Received by the receiving unit 10. The receiving unit 10, by sending to the selection unit 4 of the instruction code,
Data to be transmitted from the storage unit 5 is selected.

The new data is received by the vehicle following the same route as the map data and displayed on the display unit 3. When necessary information is acquired on the vehicle side, the end key is input from the touch panel input unit 17 to inform the center side and cut off the line.

Next, the case of a specific district other than the current district will be described. When a specific area is selected on the menu screen of FIG. 3, the block division diagram shown in FIG. 7 is transmitted from the center side and displayed on the display unit 13. Touch panel input unit 17
Select an arbitrary district such as a destination. This area code is transmitted from the vehicle side and connected to the center station in that area. The subsequent operation is the same as when the current district is selected.

In the above embodiment, the touch panel input unit 17 is used for selection input. However, an external input keypad having keys corresponding to selection keys displayed on the display unit may be used. As an effect of this modification, there is an effect that the display unit can be largely used.

[0024]

As described above, according to the present invention, the center station storing the information has the function of receiving, storing and displaying the information via the telephone line. Since the district code can be transmitted, it is not necessary to install a sign post, and information on any place can be obtained from any place. In addition, the center station is set based on the vehicle position.
To the selected center station via telephone line.
I can do it.

Furthermore, since information can be obtained only when necessary, there is no need for a memory (CDROM) and a driver for a CD that are always stored, so that the system can be made inexpensive and the latest information can always be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an on-vehicle information transmitting / receiving system according to an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the on-board information transmitting / receiving system according to one embodiment of the present invention.

FIG. 3 is a menu screen for selecting a district code.

FIG. 4 is a display example of a map screen.

FIG. 5 is a display example of traffic information.

FIG. 6 is an example of a life information selection screen.

FIG. 7 is a display example of life information.

FIG. 8 is an example of a district code selection screen.

FIG. 9 is a block diagram of a conventional vehicle information transmitting / receiving system.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 transmission / reception antenna 2 transmission / reception unit 3 modulation / demodulation unit 4 selection unit 5 storage unit 6 transmission / reception antenna 7 transmission / reception unit 8 modulation / demodulation unit 9 communication code encoding unit 10 position / information code transmission unit 11 frame memory 12 display control unit 13 display unit 14 communication code Decoding unit 15 Position, information code receiving unit 16 Dial unit 17 Touch panel unit 18 System control unit 19 Own vehicle position calculating unit 20 GPS receiver 21 Wheel speed sensor 22 Geomagnetic sensor

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G09B 29/00-29/14 G01C 21/00-21/24 G01C 23/00-25/00 H04M 11/00-11 / 10 H04B 7/24-7/26 H04Q 7/00-7/38

Claims (1)

(57) [Claims] An in-vehicle information transmission / reception system capable of displaying characters and graphics such as map information and traffic information, a function of dialing a center station storing information through a telephone line, and a function of dialing a vehicle position, a destination, and the like. By transmitting an arbitrary district code to the center station via a telephone line, it can receive a map, traffic information, and living information of any area from the center station, store and display it, and calculate the position of the vehicle. Machine
And a function of selecting a center station based on the position of the own vehicle and dialing the selected center station via a telephone line.