JPH09153193A - Information display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display 1st information received by a receiver on each fixed position and 2nd information different from the 1st information on a display device arranged on the fixed position without requiring a large scale equipment. SOLUTION: A base station 3 is provided with means 31, 32 for converting 1st information and 2nd information different from the 1st information into additional information data for FM multiplexed broadcasting, the additional information data are sent from the station 30 to a broadcasting station 70, which multiplexes the additional information data with a main sound signal, executes FM modulation for the multiplexed signal and transmits the FM modulated signal. Each fixed point 20 on a road is provided with a receiving means 21 for receiving the FM multiplexed broadcasting and a display means 80 for displaying the additional information data received by the means 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information display device, and more particularly, to a first information such as road information at a fixed point on a road such as a stop of a route bus using an FM multiplex broadcast receiver, and a first information. The present invention relates to an information display device in which second information different from the above information is displayed on the display means.

[0002]

2. Description of the Related Art Information display devices, for example, at a bus stop, display the operating status of a bus by a bus operation management system called a bus location system in order to display where the bus is passing. I am doing it.

FIG. 7 shows a conventional example, where 1 is a bus and 2A.
2 and 2B are stops, and 3 is a base station. The bus 1 has a function of transmitting position information to the base station 3 as a mobile station.
The stops 2A and 2B receive the bus approach information from the base station 3 at the receiving station and display the fact. The bus 1 outputs the position information when the driver sets the auto guide coder after leaving the stop 2A and the announcement "Next stop is the stop 2B" is heard in the car. At this time, when the base station 3 receives the position information transmitted at the same time, the base station 3 sends the approach data to the stop 2B. The stop 2B that has received this approach data notifies the bus approach.

[0004]

In the above-described conventional display device, since the driver's operation of setting the auto-guide coder triggers the transmission of position information, the position accuracy cannot be improved due to the variation in the driver's operation. There was a problem. or,
Even if there is a difference in running time due to uncertain factors such as waiting for traffic lights and traffic congestion, there was also a problem that it could not be corrected.

To correct this, Japanese Patent Publication No. 5-849
As disclosed in Japanese Laid-Open Patent Publication No. 59-59, a position correction device installed along a travel route of a bus, a travel distance counting means provided in the bus for counting data indicating a travel distance from a reference point of the bus, A correction means for correcting the data of the mileage counting means is provided to receive a signal from the position correction device, to accurately grasp the position of the bus, and display the approaching bus at the stop in a form close to the actual movement of the bus. Devices adapted to be changed are also known. However, such a device has a problem that the equipment is large and the cost is high.

[0006]

In view of the above points, the present invention converts the first information and the second information different from the first information into data as additional information data of FM multiplex broadcasting. Means are provided in a base station, the additional information data is sent from the base station to a broadcasting station, the additional information data is multiplexed with a main audio signal in the broadcasting station, FM modulated and transmitted, and each fixed on the road. The point is characterized in that a receiving means for receiving the FM multiplex broadcast and a display means for displaying the additional information data received by the receiving means are provided.

Further, the present invention is characterized in that the first information is a signal from a vehicle detector installed on a road, road information sent from a traffic control center, or the like.

Furthermore, the present invention is characterized in that the second information is information created by a person.

Further, the present invention is characterized in that the fixed point is a bus stop.

Further, the present invention is characterized in that the fixed point is a traffic information display place installed on the road.

Further, the present invention is characterized in that the first information and the second information are converted into additional information data of FM multiplex broadcasting for each fixed point.

Furthermore, the present invention is characterized in that the first information and the second information are converted into additional information data of FM multiplex broadcasting for each bus line or each business office.

[0013]

1 is a diagram showing an embodiment of the present invention.

In FIG. 1, 10 is a bus that runs on a fixed route, 20 is a stop, 30 is a base station (for example, a bus company head office), 40 is an operation control office (for example, a sales office in each region), and the base station 30 A telephone line 50 is connected between the operation management office 40 and the operation management office 40. Reference numeral 60 denotes a vehicle detector installed on the road.

The bus 10 communicates with the base station 30 via the antenna 11, and the base station 30 periodically collects data from the bus 10 by the polling method.

The base station 30 collates the signal from the vehicle detector 60 and the road information from the traffic control center with the operating route, predicts the delay time of the corresponding route with the personal computer 31, and converts it into character information data. To do. Furthermore, bus 1
Contents to be displayed on the display 80 provided at the bus stop 20 based on information obtained by wireless communication with operating vehicles such as 0, operation information gathered from the operation management office 40, and information on entertainment and travel guide advertisements. A manuscript is prepared by a person and converted into character information data by the personal computer 31. Then, the original document is sent to the broadcasting station 70 as FM multiplex program data by a computer 32 such as a workstation. As FM multiplex data, ID data for each route, operation information data for each route, for example, "Data for system 5 is operating slightly later due to traffic congestion." Advertising data for travel guides, for example, "Autumn During the holiday season
We will guide you through the taste tour of the bus. Is the data. The base station 30 also transfers signals from the vehicle detector 60, road information from the traffic control center, information obtained by wireless communication with operating vehicles, etc. to the operation management office 40. At the operation management station 40, it is taken into the central processing unit 41 and used for display control of the operation management panel 42 and the like.

In the broadcasting station 70, the data of the FM multiplex program sent from the base station 30 is multiplexed as the additional information with the main audio signal, and then FM modulated and transmitted.

FIG. 2 shows the frame structure of a digital signal which is additional information data multiplexed on the FM broadcast signal. 1
A frame consists of 272 blocks, and each block starts with a 16-bit BIC (Block Identification Code).
) Is added and used for reproduction of frame synchronization and block synchronization. Of the 272 blocks, 190 blocks are packets for transmitting data, and 82 blocks are parity packets for transmitting column-direction parity. In the data transmission packet, BIC is followed by 176-bit data packet and 14-bit CRC (Cyclic Retun).
dancy code) and a parity part of 82 bits are provided.

F in which such digital signals are multiplexed
The M multiplex signal is received by the antenna 22 of the FM multiplex receiver 21 installed at the bus stop 20 shown in FIG.
It is given to the front end 23. Front end 23
Then, the FM multiplex signal is converted into an IF signal by the local oscillation frequency signal from the block 25 including the PLL circuit and the local oscillation circuit controlled by the control means, for example, the microcomputer 24. The converted IF signal is then detected by the IF amplification and detection circuit 26, and the detected signal is LMSK.
(Level-controlled Minimum Shift Keying) It is given to the demodulation circuit 27 and the microcomputer 24.

The LMSK demodulation circuit 27 demodulates the digital signal having the frame structure shown in FIG. The demodulated digital signal is synchronously reproduced in accordance with the BIC and error-corrected in accordance with the parity code in the synchronous reproduction and error correction circuit 28 by the control signal from the microcomputer 24, and the digital signal subjected to these processes is given to the microcomputer 24. . The digital signal provided to the microcomputer 24 is processed according to a predetermined program stored in the ROM 29. As a result, when the receiver 21 of each bus stop receives its own ID data, the character information received at the same time as the ID data, that is, "No. 5 system is running a little behind due to traffic congestion." The first text information 81 and the second text information 8 "We will show you the taste tour of the XX bus during the autumn holiday season."
2 is displayed on the LCD (liquid crystal) display 80 as shown in FIG.

FIG. 5 is a diagram showing another embodiment of the present invention.

At the traffic information center 90 which is a base station,
The signal from the vehicle detector 100 and the road information from the traffic control center are processed by the personal computer 91 into character data such as a congestion section name and a congestion distance. Further, of the accident information of the police, the regulation information, the information of the vacant parking lot of the road administrator, etc., which the human needs to input the information, the person prepares a manuscript and the personal computer 91 makes the character data. Then, the computer 92 such as a workstation uses this character data as FM multiple program data,
Send to the broadcasting station 110. As FM multiplex data, ID data for each road, road information for each road such as "National highway No. 1 Moriguchi traffic jam 2km", free parking information for road managers such as "vacant parking information, ↑ Honmachi Nishi P, ← Shinanobashi P ”data.

In the broadcasting station 110, the data of the FM multiplex program sent from the base station 90 is multiplexed as the additional information with the main audio signal and then FM-modulated and transmitted.

The FM multiplex signal transmitted from the broadcasting station 110 after the additional information signal is multiplexed is received by the FM multiplex receiver 121 provided in the traffic information bulletin board 120 installed on the road. The FM multiplex receiver 12
The detailed configuration of No. 1 is the same as that of the embodiment of FIG. When the FM multiplex receiver 121 installed at a predetermined location on the road receives its own ID data, the I
The data received at the same time as the D data, that is, the first character information 123 "National highway No. 1 Moriguchi traffic jam 2Km" and the second character information 124 "vacant parking information, ↑ Honmachi Nishi P, ← Shinanobashi P" It is displayed on the display 122 of the LCD (liquid crystal).

[0025]

As described above, according to the present invention, the data of the FM multiplex program created by the base station is sent to the broadcasting station, and the character information sent from the broadcasting station is received by the receiver at each fixed point. Therefore, it is possible to display the first information received by the receiver at each fixed point and the second information different from the first information from the display device at each fixed point without requiring large-scale equipment. Can be displayed in.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of an information display device of the present invention.

FIG. 2 is an illustrative view showing a frame structure of a digital signal multiplexed with an FM broadcast signal.

FIG. 3 is a block diagram showing a part of the embodiment shown in FIG.

FIG. 4 is an illustrative view showing a part of the embodiment in FIG.

FIG. 5 is a block diagram showing a part of another embodiment of the present invention.

6 is an illustrative view showing a part of the embodiment in FIG.

FIG. 7 is a diagram showing a conventional example.

[Explanation of symbols]

10 Bus 20,120 Fixed point (bus stop, traffic information bulletin board) 21,121 Receiver 30,90 Base station (bus company head office, traffic information center) 70,110 Broadcast station 80,122 Display (display means)

Claims (7)

[Claims] 1. A base station is provided with means for converting the first information and second information different from the first information as additional information data for FM multiplex broadcasting, and the additional information is added from the base station. The information data is sent to a broadcasting station, and the additional information data is multiplexed with the main audio signal at the broadcasting station and then FM-modulated and transmitted.
An information display device characterized in that each fixed point on the road is provided with a receiving means for receiving the FM multiplex broadcast and a display means for displaying the additional information data received by the receiving means. 2. The information display device according to claim 1, wherein the first information is a signal from a vehicle detector installed on a road, road information sent from a traffic control center, or the like. 3. The information display device according to claim 1, wherein the second information is information created by a manuscript. 4. The information display device according to claim 1, wherein the fixed point is a bus stop. 5. The information display device according to claim 1, wherein the fixed point is a traffic information display place installed on a road. 6. The information display device according to claim 1, wherein the first information and the second information are converted into additional information data of FM multiplex broadcasting for each fixed point. 7. The first information and the second information are dataized as additional information data of FM multiplex broadcasting for each route of the bus or each business office. Information display device.