JPH08190694A - Traffic information receiver - Google Patents

Abstract

PURPOSE: To miniaturize a traffic information receiver, to simplify its wiring, and to further simplify its whole constitution in a constitution that receives traffic information from various kinds of communication systems. CONSTITUTION: A common substrate 16 is integrally connected with a substrate 17 for FM multiplex reception, a substrate 18 for radio beacon reception and a substrate 19 for optical beacon. Each substrate 17 to 19 for reception outputs an interruption signal to the CPU 33 of the common substrate 16 when the transmission signal from the transmitter of each communication system is received. The CPU 33 normally executes a processing that the reception data generated based on the reception signal is transmitted to a navigation device 12 and executes the interruption program according to the interruption priority of the interruption signal when the interruption signal is received. Therefore, because the CPU 33 generates the reception data based on the reception signal according to the interruption priority, the necessity of the providing each substrate for reception 17 to 19 with the processing function generating reception data based on the reception signal is not eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traffic information receiving apparatus for receiving traffic information (VICS information) transmitted from a broadcasting station or a beacon transmitter.

[0002]

2. Description of the Related Art In recent years, traffic information (traffic accidents, construction information, traffic jams, traffic jams, etc.) has been transmitted from broadcasting stations or transmitters installed along roads.
Traffic information communication systems for transmitting parking information, etc.) are being put to practical use.

As this type of traffic information communication system,
There are an FM multiplex system that transmits traffic information from a broadcasting station using FM multiplex broadcasting, or a radio wave beacon system and an optical beacon system that transmit traffic information from a beacon transmitter installed along a road. Therefore, the FM
By providing multiple receivers, radio beacon receivers, and optical beacon receivers as needed, it is possible to give traffic information that changes from moment to moment to the occupants of the vehicle, so that the vehicle can be smoothly operated based on those information. Can drive.

In this case, the FM multiplex system can transmit traffic information over a wide range, and is therefore suitable for transmitting wide area information such as weather as traffic information. On the other hand, in the radio beacon system and the optical beacon system, a transmitter for spot (extremely narrow area) communication is installed on the road, for example, every 2 to 5 km, and communication is sequentially performed between the transmitter and the receiver that are close to the vehicle. Is to do. Therefore, the position of the passage point, destination guidance, etc. are suitable as the traffic information.

By the way, in recent years, a navigation device has been mounted on a vehicle, and it is considered to use a monitor of the navigation device as a display means of a traffic information communication system. In this case, the navigation device can correct the current position and display accurate position data by providing the navigation device with the position information of the passing point given from the radio beacon transmitter and the optical beacon transmitter.

FIG. 14 shows a system configuration of this type. In FIG. 14, an FM multiplex receiver 2, a radio wave beacon receiver 3, and an optical beacon transceiver 4 are connected to the navigation device 1.
Is configured to process the received data from each of the receivers 2 to 4 and display it on the display unit 5.

[0007]

However, in the above-mentioned conventional example, since the receivers 2 to 4 are connected independently of the navigation device 1, the receivers 2 to 4 are connected to each other. The installation space is insufficient and the wiring is troublesome. Further, since it is necessary to individually provide each of the receivers 2 to 4 with a communication function for transmitting a reception signal to the navigation device, there is a drawback that the configuration of each receiver becomes complicated.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to reduce the size and simplify wiring in a configuration for receiving traffic information transmitted from various communication systems. Is to provide a traffic information receiving device that can simplify the entire configuration.

[0009]

A traffic information receiving apparatus of the present invention is provided with a radio wave broadcast receiving section for receiving a broadcast wave dedicated to traffic information, and the traffic information transmitted from a beacon transmitter provided along a road. A beacon receiving unit for receiving a transmission signal indicating the received signal is provided based on a reception signal from the receiving unit that is provided in the vehicle so that the radio wave broadcasting receiving unit and the beacon receiving unit can be integrally connected. Is equipped with a control means for generating and outputting to an external device (Claim 1).

In the above structure, when the radio wave broadcast receiving section and the beacon receiving section are connected to each other, the control means receives the signal from the beacon receiving section with priority over the signal received from the radio wave broadcasting receiving section. The signal may be processed (claim 2).

Further, the beacon receiving section is composed of a radio wave beacon receiving section and an optical beacon receiving section, and the control means controls the radio wave when the radio wave beacon receiving section and the optical beacon receiving section are connected. The reception signal from the optical beacon reception unit may be processed prior to the reception signal from the beacon reception unit (claim 3).

Further, an auxiliary function unit for assisting the operation of the control unit or the external device is connectably provided to the control unit, and the control unit is provided with the auxiliary function unit when the auxiliary function unit is connected. You may make it process a received signal using a function part (Claim 4).

[0013]

In the traffic information receiving apparatus according to the first aspect, the radio wave broadcast receiving section and the beacon receiving section are connected to the control means as required. At this time, since the radio wave broadcast reception unit and the beacon reception unit are integrated in the state of being connected to the control means, the whole is not enlarged and wiring is not troublesome.

When the radio wave broadcast receiver or the beacon receiver connected to the control means receives the transmission signal indicating the traffic information, the control means generates reception data based on the reception signal from the reception portion and externally outputs it. Output to the device. With this, the control unit can process the reception signal from each receiving unit, so that the entire configuration can be simplified as compared with the configuration in which the processing function of processing the reception signal is provided for each receiving unit.

In the case of the traffic information receiving device according to claim 2,
The control means processes the received signal from the beacon receiving unit prior to the received signal from the radio wave broadcasting receiving unit and outputs the processed signal to the external device. At this time, since the traffic information from the beacon transmitter has a higher processing priority than the traffic information by radio wave broadcasting, the beacon is processed by processing the received signal from the beacon receiving section prior to the received signal from the radio wave broadcasting receiving section. It is possible to reliably receive the traffic information from the transmitter.

In the case of the traffic information receiving device according to claim 3,
The control means receives and processes the reception signal from the optical beacon reception unit in preference to the reception signal from the radio beacon reception unit. At this time, since the traffic information from the optical beacon transmitter has a higher processing priority than the traffic information from the radio beacon transmitter, the reception signal from the optical beacon reception unit takes precedence over the reception signal from the radio beacon reception unit. Traffic information from the optical beacon transmitter can be reliably received by processing the signal.

In the case of the traffic information receiving device according to claim 4,
When the auxiliary function unit is connected, the control means processes the received signal by the auxiliary function unit. As a result, the operation load of the control unit or the external device can be reduced.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.
Will be described with reference to. FIG. 2 shows the overall system configuration. In FIG. 2, the traffic information receiver 11 has functions of FM multiplex reception, radio beacon reception, and optical beacon transmission / reception, and generates reception data based on a reception signal to communicate with a navigation device 12 as an external device. Is supposed to do. A display unit 13 and an operation unit 14 are connected to the navigation device 12, and the display content on the display unit 13 can be arbitrarily set according to an operation on the operation unit 14.

FIG. 3 is a perspective view of the traffic information receiver 11. In FIG. 3, a common substrate 16 is arranged in the housing 15, and an FM multiplex reception substrate 17 as a radio broadcast receiving unit and a radio beacon receiving substrate as a radio beacon receiving unit are provided on the common substrate 16. 18 and an optical beacon transmitting / receiving substrate 19 as an optical beacon receiving unit are connected.

That is, as shown in FIG. 4, the connector 20 is mounted on the lower surface of the common substrate 16, and the common substrate 1
An FM multiplex reception board 17 is attached to the connector 6 via a connector 20. Further, connectors 21 and 22 are mounted on the upper surface of the common board 16, a radio wave beacon receiving board 18 is attached to the common board 16 via the connector 21, and optical beacon transmission / reception is performed via the connector 22. A board 19 is mounted. With the above configuration, FM
The multiplex reception board 17, the radio wave beacon reception board 18 and the optical beacon transmission / reception board 19 are connected in an integrated state with the common board 16.

In FIG. 3, connectors 23 and 24 are mounted on the FM multiplex reception board 17, and a radio antenna 25 and a car radio 26 are attached to these connectors 23 and 24.
(See FIG. 1) are connected to each other. Also,
A connector 27 is attached to the radio beacon receiving substrate 18, and a radio beacon antenna 28 is connected to the connector 27. Further, a connector 29 is mounted on the optical beacon transmitting / receiving board 19, and the optical beacon light emitting / receiving unit 30 is connected to the connector 29. Here, the radio beacon antenna 2
8 and the light beacon light emitter / receiver 30 are mounted at predetermined positions facing the outside of the vehicle. Further, a connector 31 is mounted on the common board 16, and the navigation device 12 and the vehicle speed sensor 32 (see FIG. 1) are connected to the connector 31.

FIG. 1 is a block diagram showing an electrical configuration of the traffic information receiving device 11. In FIG. 1, the common board 16 is electrically connected to the FM multiplex reception board 17 and the radio beacon reception board 18. Further, the common board 16 is equipped with a CPU 33 as a control means for processing a reception signal from the optical beacon transmission / reception board 19, and a memory 34 and a navigation device 12 necessary for processing the reception signal. A communication control unit 35 for communication, a vehicle speed pulse shaping unit 36 that shapes a pulse signal from the vehicle speed sensor 32, and a voltage monitoring unit 37 are mounted.

FIG. 5 shows the electrical construction of the common substrate 16. In FIG. 5, the voltage monitoring unit 37 is provided with a switch 38, and the ignition switch is AC.
The switch 38 is turned on in the state of being operated to the C position so that the battery is connected to the regulator 39 and the power supply IC 40. The regulator 39 outputs with the battery voltage stabilized at 9V. In addition, the power source I
C40 sends a reset signal to C when the output voltage is unstable.
The CPU 3 outputs the signal to the PU 33 and a reset signal when the output voltage falls below 4.5V.
The operation of 3 is stopped. Here, the power supply IC 40 has a function of a watchdog timer, and when the pulse signal is not input from the CPU 33 intermittently, it outputs a reset signal to stop the CPU 33.

The CPU 33 has all the receiving boards 1
A program for processing the received signals from 7 to 19 is stored in advance, and the CPU 33 uses the receiving board 17 to
When any of 19 is in the receiving state, it operates according to the corresponding program. Further, the voltage monitoring unit 37 is designed so as to be able to cope with the power consumption when all the receiving boards 17 to 19 are operated. The storage capacity of the memory 34 is designed according to the signal capacity of the reception signal from the FM multiplex reception board 17 that requires the largest capacity among the reception boards 17 to 19.

The communication control section 35 is composed of a communication IC, and in this embodiment, the reception data from each of the reception boards 17 to 19 are time-divisionally communicated, so that only one is required. Further, the vehicle speed pulse shaping unit 36 outputs the pulse signal from the vehicle speed sensor 32 to the CPU 33 in a shaped state, and is basically not necessary for the processing of FM multiplex reception, but it is not necessary for the reception of radio wave beacons and optical signals. Necessary for processing beacon transmission / reception. In this case, since the vehicle speed pulse shaping section 36 is shared by the radio wave beacon receiving board 18 and the optical beacon transmitting / receiving board 19, it is possible to deal with it by providing only one.

Here, the FM multiplex reception board 17, the radio wave beacon reception board 18 and the optical beacon transmission / reception board 19 are provided.
Generates an interrupt signal when it enters a predetermined reception state. That is, the FM multiplex reception board 17 outputs the interrupt signal 3 when receiving the FM multiplex broadcast, and the radio wave beacon reception board 18 outputs the interrupt signal 2 when the reception power of the quasi-microwave exceeds the predetermined value. The optical beacon transmission / reception substrate 19 outputs an interrupt signal 1 when the received light level exceeds a predetermined value.

Then, the CPU 33 controls each receiving board 17
It is designed to receive interrupt signals 1 to 3 from
When one of the interrupt signals is received, the program currently being executed is interrupted as necessary to execute the corresponding interrupt program. In this case, the interrupt priority is
The interrupt signal 1 is the highest and the interrupt signal 3 is the lowest.

Next, the structures of the FM multiplex reception board 17, the radio wave beacon reception board 18 and the optical beacon transmission / reception board 19 will be described. In FIG. 1, the FM multiplex reception board 17 includes an RF distribution amplification section 41, an FM tuner 42,
A decoder 43 is installed. Here, the RF distribution amplification unit 41 distributes the RF signal received by the radio antenna 25 into an RF signal for car radio and an RF signal for traffic information.
The FM tuner 42 tunes to an RF signal of a set frequency to perform FM detection and obtain a reception signal. The decoder 43 extracts the multiplexed signal component when the multiplexed signal component exceeds a predetermined level and performs synchronization, error correction, error detection, etc., and when it determines that the multiplexed signal is normal, the decoded multiplexed data Is output to the common substrate 16 through the connector. In this case, the decoder 43 outputs the interrupt signal 3 when outputting the multiplexed data.

The RF unit 4 is provided on the radio wave beacon receiving substrate 18.
4, a demodulation unit 45 and a decoder 46 are mounted. Here, the RF unit 44 amplifies the RF signal received by the radio beacon antenna 28. The demodulation unit 45 converts the RF signal into an intermediate frequency and performs amplitude detection and frequency detection.
The decoder 46 performs synchronization, error detection, and direct position detection when the received signal level is equal to or higher than a predetermined level, and outputs radio wave beacon data to the common board 16 when it determines that the received signal is normal. . In this case, the decoder 4
6 is an interrupt signal 2 when outputting radio wave beacon data
Is output.

The amplification unit 4 is provided on the optical beacon transmission / reception board 19.
7, a demodulation unit 48 and a communication processing unit 49 are mounted.
The amplification unit 47 amplifies a reception signal from the light receiving unit of the light beacon light emitting and receiving unit 30. The demodulation unit 48 detects the amplitude and the reception level from the received signal. The communication processing unit 49 processes the reception data when the reception signal level becomes equal to or higher than the predetermined level, and outputs the optical beacon reception data to the common board 16. In this case, the communication processing unit 49 outputs the interrupt signal 1 when outputting the optical beacon data. When the transmission data is input from the common substrate 16, the communication processing unit 49 converts the transmission data into a predetermined communication format and outputs the transmission data to the light emitting unit of the light beacon light emitting / receiving unit 30.

Now, the CPU 33 always executes the main program, and at the same time, each of the receiving boards 17-1.
When an interrupt signal is received from the CPU 9, the interrupt program corresponding to the interrupt signal is executed as necessary. The operation of the CPU 33 will be described below with reference to FIGS. 6 to 10. To do.

[Main Program] FIG. 6 shows the main program of the CPU 33. In FIG. 6, C
The PU 33 first executes initialization (step S61). As a result, the peripheral devices of the CPU 33 such as the memory 34 are initialized, or the receiving boards 17 to 19 connected to the common board 16 are initialized.

Subsequently, the CPU 33 determines whether or not the received data from the receiving boards 17 to 19 connected to the common board 16 is updated and registered in the memory 34 (step S).
62), when the received data is updated and registered, a reception notice is sent to the navigation device 12 (step S6).
3). When the navigation device 12 requests the actual data, the CPU 33 transmits the received data corresponding to the request to the navigation device 12.

The CPU 33 constantly monitors whether or not the received data is received by executing the above-mentioned main program, and sends a reception notification to the navigation device 12 each time new data is normally received. A series of operations are repeated.

When the CPU 33 receives the interrupt signal during the execution of the main program as described above, it executes the interrupt program as follows. [FM Multiplex Reception Program] (Interrupt 3) When the FM multiplex reception board 17 receives FM multiplex data, the interrupt signal 3 is given from the FM multiplex reception board to the common board 16. Then, C provided on the common substrate 16
When receiving the interrupt signal 3, the PU 33 suspends the main program currently being executed and executes the FM multiplex reception program shown in FIG.

That is, the CPU 33 receives the multiplex data packet from the decoder 43 of the FM multiplex reception board 17 (step S71). This multiplex data packet consists of, for example, 176 bits, and a 14-bit CRC code is attached to the multiplex data packet (see FIG. 8). Here, the CPU 33 determines whether the data packet is correct or not based on the CRC code attached to the multiplex data packet (step S72), and if correct, stores the data packet in the memory 34 (step S73).

Subsequently, the CPU 33 determines whether or not the data packet is completed as one meaningful group (hereinafter referred to as a data group) (step S7).
4). In this case, the data group is generally constructed by a plurality of data packets. And CPU3
3 determines whether or not the data group is correctly completed based on the CRC code included in the data group. If the data group is correctly completed, the data group is updated and registered in the memory 32 (step S75). ), Return to the main program.

[Radio beacon reception program] (interrupt 2) When the vehicle enters the transmission area of the radio beacon transmitter installed on the road, the reception level becomes the specified value or more, so that the radio beacon reception board 18 is commonly used. The interrupt signal 2 is provided to the substrate 16. Then, when the CPU 33 provided on the common board 16 receives the interrupt signal 2, the CPU 33 interrupts the execution of the main program that is currently being executed and executes the radio beacon reception program shown in FIG.

That is, the CPU 33 receives radio wave beacon data from the radio wave beacon receiving board 18 (step S91), and then determines whether or not the portion directly below the radio wave beacon transmitter is detected (step S92). At this time, CP
When the U33 detects that it is right under the radio beacon transmitter, it updates and registers the data to end the receiving operation (step S93), updates and registers the data (step S94), and then returns to the main program. . Also,
The CPU 33 determines that the reception from the radio beacon transmitter has failed when it cannot detect the area directly below the radio beacon transmitter, terminates the interrupt program, and returns to the main program.

[Optical Beacon Transmission / Reception Program] (Interrupt 1) When a vehicle enters an infrared ray projection area from an optical beacon transceiver installed on the road, a photoelectric conversion voltage in the light receiving section of the light beacon light emitting / receiving section 30. Is greater than the predetermined value, the interrupt signal 1 is given from the optical beacon transmitting / receiving board 19 to the common board 16. Then, the common substrate 1
When receiving the interrupt signal 1, the CPU 33 provided in No. 6 interrupts the main program currently being executed and executes the optical beacon transmission / reception program shown in FIG.

That is, the CPU 33 transmits the uplink data (own vehicle ID, destination, etc.) to the optical beacon transceiver installed on the road (step S101). Then, the optical beacon transceiver, when receiving the uplink data, responds to the uplink data with its own vehicle ID.
Since the downlink data including is transmitted, the downlink data is output from the optical beacon transmission / reception board. Therefore, when the CPU 33 receives the downlink data (step S102), the own vehicle ID is included in the received data.
If there is, it is determined that the transmission has succeeded (step S10).
3) Check whether all the downlink data have been received (step S104), and if the reception has been completed normally, update the received data in the memory (step S1).
05) Further, if the received data does not include the own vehicle ID, the CPU 33 determines that the transmission has failed, ends the interrupt program, and then returns to the main program. Although the above-mentioned interrupt program determines whether communication is appropriate in one transmission / reception, the communication failure may be allowed up to a predetermined number of times, and the processing of repeating from the uplink data transmission may be executed again.

Here, the interrupt from the optical beacon transmission / reception board 19 is set to the highest level, and the FM multiplex reception board 17 is set.
The interrupt from is set to the lowest level. Therefore, the CPU 33 interrupts the processing of the reception signal from the FM multiplex reception board 17 when the radio wave beacon reception board 18 is in the reception state during the processing of the reception signal from the FM multiplex reception board 17. When the optical beacon transmission / reception board 19 is in the receiving state while processing the reception signal from the radio wave beacon reception board 18 and processing the reception signal from the radio wave beacon reception board 18, The processing of the received signal from the substrate 18 is interrupted and the processing of the received signal from the optical beacon transmitting / receiving substrate 19 is executed. This is because the traffic information by the FM multiplex system is wide area information and is less urgent than the traffic information by the radio beacon system and the optical beacon system. Also, the communication time with the optical beacon transmitter / receiver is shorter than the communication time with the radio wave beacon transmitter and requires urgency.

The radio beacon system is under the control of the Ministry of Construction, and the radio beacon transmitter is mainly installed on highways. On the other hand, the optical beacon system is under the control of the National Police Agency, and optical beacon transceivers are mainly installed on ordinary roads. In this case, it is extremely rare that the radio beacon transmitter and the optical beacon transceiver are installed at the same point, but there is a possibility that they will be installed close to each other. Also, the reception data is processed by setting the priority for the reception of the optical beacon transmission / reception board.

According to the above structure, the common substrate 16
In addition, the FM multiplex reception board 17, the radio beacon reception board 18, and the optical beacon transmission / reception board 19 are configured to be integrally connectable, and the reception data from the connected reception boards 17 to 19 is stored in the common board 16. Since the processing is performed by the CPU 33 and is output to the navigation device 12, the CPU
33 can process the reception signals from the receiving boards 17 to 19 in a time division manner according to the priority. Therefore, unlike the conventional example in which the FM multiplex receiver, the radio wave beacon receiver and the optical beacon receiver are connected to the navigation device, downsizing can be achieved and wiring can be omitted, and further, for each reception. The configurations of the boards 17 to 19 can be simplified.

Further, since each of the receiving boards 17 to 19 outputs an interrupt signal corresponding to the interrupt priority to the common board 16 and executes each interrupt program in response to the interrupt signal, it is common. The received signal can be reliably processed without determining the type of the receiving boards 17 to 19 connected to the board 16.

FIG. 11 shows a second embodiment of the present invention. The same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In the second embodiment, a memory card (including an IC card) 50 as an auxiliary function unit having a storage function such as an HDD or a ROM card is provided so as to be connectable to the common substrate 16, and the connected memory card 50 is connected. It is also possible to uniformly convert link data specific to each receiving system (systematic by dividing a road by a predetermined method to construct a road map) into navigation link data and send it to the navigation device 12. is there.

According to the second embodiment, it is not necessary to convert the link of each receiving system on the side of the navigation device 12, so that the processing load of the navigation device 12 can be greatly reduced.

FIG. 12 shows a third embodiment of the present invention. In the third embodiment, a drawing function board (with built-in CPU) 51 as an auxiliary function section is provided so as to be connectable to the common board 16, and various graphic data included in each receiving system is previously stored in the traffic information receiving device 11. It is output to the navigation device 12 in a state of being drawn and converted into a video signal.

According to the third embodiment, it is possible to display on the display in a shorter time than drawing by the navigation device 12. This is the traffic information receiver 11
This is because it is not necessary to transfer the graphic data from the navigation device 12 to the navigation device 12.

FIG. 13 shows a fourth embodiment of the present invention. In the fourth embodiment, a GPS receiving board (with built-in CPU) 52 as an auxiliary function section is provided so as to be connectable to the common board 16, and the distance to each satellite measured by the GPS receiving board 51 is used for FM multiplex reception. By correcting the distance to each satellite by the correction value obtained from the board 17, it becomes possible to calculate the current position with higher accuracy than in the case where the measurement is performed by GPS alone.

Further, when the GPS signal cannot be sufficiently received due to the shadowing of the satellite due to the shadow of the building or the like, the radio beacon receiving board 18 connected to the common board 16 enables the highly accurate position correction. The position detection performance according to this embodiment is dramatically improved. In this case, the traffic information can be obtained from the FM multiplex reception board 17 and the radio beacon reception board 18 as in the first embodiment.

In the above embodiment, F is used for receiving traffic information.
Although an example corresponding to all the receiving boards of the M-multiplex receiving board 17, the radio beacon receiving board 18 and the optical beacon transmitting / receiving board 19 is shown, any of the receiving boards may be used. In this case, the receiving board in the receiving state outputs an interrupt signal corresponding to the receiving board to the common board 17, so that the CPU 33 provided on the common board 16 is provided.
Can properly process the received signal from the receiving substrate.

The present invention is not limited to the above embodiment, but can be modified or expanded as follows. The CPU 33 provided on the common board 16 determines the reception state of the reception boards 17 to 19 connected to the common board 16, processes the reception data from the reception boards 17 to 19 in the reception state, and When a plurality of receiving boards 17 to 19 are in the receiving state at the same time, the received data may be processed according to the priority order. Instead of connecting the receiving board to the common board 16 in the housing 15 and integrating them, for example, a receiving circuit unit may be connected to a control unit that processes a received signal as needed. .

[Brief description of drawings]

FIG. 1 is a block diagram showing the overall configuration of a first embodiment of the present invention.

FIG. 2 is a diagram showing a system configuration.

FIG. 3 is an overall perspective view

FIG. 4 is a perspective view showing a connection relationship between a common substrate and each receiving substrate.

FIG. 5 is a schematic diagram showing an electrical configuration of a common substrate.

FIG. 6 is a flowchart showing a main program.

FIG. 7 is a flowchart showing an FM multiplex broadcast reception program.

FIG. 8 is a schematic diagram of a data packet

FIG. 9 is a flowchart showing a program for receiving a radio beacon.

FIG. 10 is a flowchart showing a program for receiving an optical beacon.

FIG. 11 is a diagram corresponding to FIG. 1 showing a second embodiment of the present invention.

FIG. 12 is a view corresponding to FIG. 1 showing a third embodiment of the present invention.

FIG. 13 is a view corresponding to FIG. 1 showing a fourth embodiment of the present invention.

FIG. 14 is a view corresponding to FIG. 2 showing a conventional example.

[Explanation of symbols]

Reference numeral 11 is a traffic information receiving device, 12 is a navigation device (external device), 16 is a common substrate, 17 is an FM multiplex receiving substrate (radio wave broadcasting receiving unit), 18 is a radio wave beacon receiving substrate (radio wave beacon receiving unit), 19 Is an optical beacon transmission / reception board (optical beacon reception section), 33 is a CPU (control means), 50 is a memory card (auxiliary function section), 51 is a drawing function board (auxiliary function section), and 52 is a GPS reception board ( Auxiliary function part).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Osamu Todori 1-1, Showa-cho, Kariya city, Aichi Prefecture Nihon Denso Co., Ltd. (72) Inventor Tomohisa Yato 1-1-chome, Showa town, Kariya city, Aichi prefecture Co., Ltd. (72) Inventor Yuzuru Fujiwara 1-1, Showa-cho, Kariya City, Aichi Prefecture

Claims (4)

[Claims] 1. A radio wave broadcast receiving unit for receiving broadcast radio waves dedicated to traffic information, a beacon receiving unit for receiving a transmission signal indicating traffic information transmitted from a beacon transmitter provided along a road, and a vehicle. And a control means that is provided so as to be integrally connectable to the radio wave broadcast reception unit and the beacon reception unit and that generates reception data based on a reception signal from the connected reception unit and outputs the reception data to an external device. A traffic information receiving device characterized by being provided. 2. The control means, when the radio wave broadcast receiving section and the beacon receiving section are connected, prioritizes the reception signal from the radio wave broadcasting receiving section to receive the reception signal from the beacon receiving section. The traffic information receiving device according to claim 1, which is processed. 3. The beacon receiving unit includes a radio wave beacon receiving unit and an optical beacon receiving unit, and the control unit controls the radio wave when the radio wave beacon receiving unit and the optical beacon receiving unit are connected. The reception signal from the optical beacon reception unit is processed prior to the reception signal from the beacon reception unit.
The traffic information receiver described. 4. An auxiliary function unit provided so as to be connectable to the control unit and assisting the operation of the control unit or the external device, wherein the control unit is provided when the auxiliary function unit is connected. The traffic information receiving apparatus according to claim 1, wherein the received signal is processed by using the auxiliary function unit.