JPH09161195A - Information receiving system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically receive information broadcasting by controlling a radio receiver detecting that a vehicle reaches a prescribed range of a registered mark spot to broadcast information. SOLUTION: When the mark of 'traffic information' exists in the middle of travelling on a road, a driver turns a radio receiving part 2 to receive traffic information so as to hear traffic information by the operation. At the same time, a control microcomputer 21 detects the tuning operation of traffic information and outputs a detection signal to CPU 17g in a navigation part 1. In addition this detection can be judged by a receiving frequency. CPU 17g detects a present position A at the time of receiving the detection signal by means of a GPS receiver 13, etc., to registers the position A in RAM 17c and displays it on an LCD monitor 15 as a register mark. At the time of registering the position A like this, the position A is automatically read out from RAM 17c with the map of CD-ROM to be displayed on the LCD monitor 15 hereafter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information receiving system for receiving information broadcasting such as traffic information, and more particularly to automatically receiving information broadcasting when it reaches a point where information broadcasting is carried out so that there is no omission of reception. The present invention relates to an information receiving system capable of receiving.

[0002]

2. Description of the Related Art Information on road conditions is broadcast as traffic information by dedicated AM waves by an antenna installed on the side of the road. The broadcast is provided only in a specific section of the road, the driver turns on the radio by looking at the "traffic information" sign installed on the road, and the reception frequency is the preset reception frequency of the traffic information. Was adjusted to. In addition to traffic information, a system has been developed that broadcasts event information, parking lot information, etc. in a limited narrow range, that is, locally. When it is desired to input such information broadcast, for example, traffic information, it is necessary to set the reception frequency of the radio receiver so that the traffic information can be heard when the traffic information broadcast section (displayed by a sign) is reached.

[0003]

In the above method, the driver may overlook the "traffic information" sign, and
Even if you can confirm that the traffic information is provided visually or by using a navigation device, you need to manually switch on the radio and set the reception frequency so that the traffic information can be received. It is troublesome.

It is an object of the present invention to provide an information receiving system capable of automatically receiving an information broadcast at a point where information such as traffic information is provided.

[0005]

In order to achieve the above object, the present invention comprises a radio receiver and position detecting means for detecting the position of the vehicle, and detects the position of the vehicle detected by the position detecting means. A navigation device that displays road information along with map information and guides the road, and a spot where local information broadcasting is performed is registered as a mark spot in the navigation device in correspondence with the map information. Means, and arrival detection means for detecting that the vehicle has arrived within a predetermined range of the registered mark point,
Reception control means for controlling the radio receiver to receive the information broadcast when the arrival detection means detects that the vehicle has reached a predetermined range of the mark point. It is what

Further, the control means changes the reception frequency of the radio receiver to the frequency of the information broadcast when the radio receiver is receiving another broadcast. . The control means may turn on the radio receiver and set the reception frequency of the radio receiver to the frequency of the information broadcast when the radio receiver is off. It is a feature.

Further, the control means constitutes an audio device in which the radio receiver is integrated with another sound source, and the control means controls the sound source when the other sound source is operating. While switching to the radio receiver,
The reception frequency of the radio receiver is set to the frequency of the information broadcast. The mark point registration means registers the mark point together with a road type, the arrival detection means is on the road of the same type as the registered road type, and the vehicle is the mark. It is characterized by detecting that it is within a predetermined range of a point.

Further, the radio receiver includes operation signal output means for detecting that an operation of information broadcasting is performed,
The mark point registration means is for registering the position of the vehicle detected by the position detection means as a mark point when the operation signal output means detects a reception operation of the information broadcast. is there. Further, level detection means for detecting a reception signal level of the information broadcast, and the information broadcast of the radio receiver when the level detection means detects that the reception signal level of the information broadcast has dropped below a predetermined level. And a return means for returning the radio receiver to the original state before receiving the information broadcast.

Further, the mark spot registration means has a spot where the information broadcast can be received while the vehicle is traveling at the mark spot and a spot where the information broadcast cannot be received while the vehicle is traveling. The mark point is registered as an intermediate point with respect to the point. Further, the point at which the information broadcast can be received is a point at which the radio receiver operates the information broadcast.

Further, the point at which the information broadcast cannot be received is a point at which it is detected that the received signal level of the information broadcast has dropped below a predetermined value. . Further, the arrival detection means is for detecting that the distance at which the vehicle can reach the registered mark point is within a predetermined range.

[0011]

1 is a diagram showing the configuration of a traffic information receiving system according to an embodiment of the present invention. Hereinafter, description will be made with reference to the drawings. 1 is a navigation part, which is a C in which map information is recorded.
CD-ROM deck 1 for reading information from D-ROM
1. Angular velocity sensor 12 that detects the angular velocity of the vehicle traveling on a curve, GPS receiver 13 that detects the current position of the vehicle by receiving radio waves from an artificial satellite, and the vehicle speed of the vehicle that is detected by a pulse generator connected to the axle. A vehicle speed sensor 14, an LCD monitor 15 for displaying the current position of the vehicle together with map information, a speaker 16 for guiding by voice, and a controller 17 for processing and controlling these. still,
The control unit 17 displays the map information of the CD-ROM on the LCD monitor 1
5, a graphic controller 17a for displaying a video on the display 5, a VR for temporarily storing an image for image processing
AM17b, RAM17c as memory for data,
It is composed of a ROM 17d as a memory for programs and the like, an input / output interface 17e, an audio amplifier 17f, and a CPU 17g for controlling these.

[0012] Reference numeral 2 is a radio receiving section for receiving traffic information.
A control microcomputer (microcomputer) 21 for controlling the operation / non-operation of the radio receiving section, frequency instruction, etc. according to an instruction from the control section 17, a PLL synthesizer tuner 22 for setting a reception frequency for receiving traffic information, an audio amplifier 23 and a speaker 24. 2A and 2B are diagrams for explaining the receiving operation of the traffic information receiving system according to the embodiment of the present invention. FIG. 2A is a general road, and FIG. 2B is a highway. Hereinafter, description will be made with reference to the drawings.

First, the receiving operation of the traffic information receiving system will be described with reference to FIG. 2A in the case of a general road. The points where traffic information is provided (the points along the road but the points are registered) are marked points (X2, Y2).
) Is registered in the RAM 17c (nonvolatile portion) (the registration method will be described later with reference to FIGS. 3 and 4). From a CD-ROM that stores map information to a CD-R
OM deck 11 has map information and registration points (mark points)
Is read. Meanwhile, the current position of the vehicle is detected by the angular velocity sensor 12, the GPS receiver 13, the vehicle speed sensor 14, and the like. Then, the map information, the mark point, and the current position of the vehicle are displayed on the LCD monitor 15. If the current position of the vehicle is within a predetermined distance (for example, within a range of 1 km) of the registered mark point, the CPU 17g outputs a reception instruction signal to the control microcomputer 21 so as to receive the traffic information.

The control microcomputer 21 instructs the PLL synthesizer tuner 22 to change the reception frequency to the traffic information reception frequency (1620 kHz or the like) when the radio is receiving another broadcast. If the radio switch is off, turn on the switch and instruct to set the reception frequency to the reception frequency of the traffic information (in addition, when using another audio device such as a cassette tape player, the radio Switch to). The PLL synthesizer tuner 22 sets the reception frequency according to the instruction so that the traffic information can be received. Then, the traffic information is provided by the voice amplifier 23 and the speaker 24.

The detection section of the radio receiving section 2 detects the received signal level, and when it falls below a predetermined level, it is considered that the transmission of traffic information has been completed, and the original state is restored. That is, if the traffic information is received while listening to another audio device, the original audio device is restored after the reception is completed (when the reception level is lower than the predetermined level). next,
Receiving operation in case of highway (specific road) Figure 2
This will be described with reference to FIG. In the description of FIG. 2A, the radio receiving unit 2 is set so as to receive the traffic information if the vehicle is within a predetermined range from the registration point. However, if there is a registration mark on a highway or the like, judging from only the distance from the registration point, the traffic information will be in a receiving state even if the vehicle is traveling on an ordinary road intersecting with the highway. However, the information on the expressway is an unnecessary information while traveling on the general road, which is troublesome. Therefore, by using the angular velocity sensor 12, the GPS receiver 13, and the vehicle speed sensor 14, a map matching method (a method of comparing a traveling locus and a map to determine which road is traveling) is used to determine which type the position of the vehicle is. Make sure it is on the road. For example, when the registration mark is on the highway and it is detected by the map matching method that the current position of the vehicle is at point A (within a predetermined distance from the registration point) on the highway, the CPU 17g outputs a reception instruction signal. . Then, the radio receiving unit 2 operates so as to receive the traffic information. On the other hand, when it is detected that the current position of the vehicle is at point B (within a predetermined distance from the registration point) on the general road, the CPU 17g does not output the reception instruction signal. Therefore, the radio receiver 2 does not operate to receive traffic information. As a result, only necessary information about the traveling road can be obtained, and unnecessary information can be excluded.

If the registration point is on an expressway or a road crossing over an open road while traveling on an ordinary road, the distance calculated by the means by which the vehicle can reach the registration point, that is, the expressway, etc. Excludes unnecessary information by determining whether the distance from the current location to the registration point via the interchange, or the distance from the current location to the registration point via the connecting road is within a predetermined distance on the road where there is a grade separation. You can also do it.

3A and 3B are views for explaining the registration operation of the traffic information receiving system according to the embodiment of the present invention. FIG. 3A is a traffic information reception switching point registration, and FIG. 3B is an intermediate point registration. Is. FIG. 4 is a flow chart for explaining the waypoint registration operation of the traffic information receiving system according to the embodiment of the present invention. First, the case of traffic information reception switching point registration will be described with reference to FIG. When there is a "traffic information" sign while traveling on the road, the driver (or passenger) causes the radio reception unit 2 to receive the traffic information. The traffic information can be heard by the operation. At the same time, the control microcomputer 21 of the radio receiver 2 detects that the traffic information is selected, and outputs a detection signal to the CPU 17g of the navigation unit 2. This detection can be judged by the reception frequency. The CPU 17g detects the current position A when the detection signal is received by the GPS receiver 13 or the like, and detects the position A
(X3, Y3) is registered in the RAM 17c (non-volatile) and displayed as a registration mark on the LCD monitor 15. When the position A is registered in this way, the position A is automatically stored in the RAM 17 together with the map of the CD-ROM from then on.
It is read from c and displayed on the LCD monitor 15.

Next, the case of waypoint registration will be described with reference to FIGS. 3B and 4. In this example, the intermediate point between the point where the traffic information reception operation is performed and the point where the traffic information cannot be received is registered. In step S1, it is determined whether or not the traffic information reception switching operation is performed. If the reception switching operation is performed, the process proceeds to step S2, and if the switching operation is not performed, the process stands by. That is, it is determined whether or not the driver (or the passenger) has set the radio reception unit 2 to receive the traffic information. When the radio receiving unit 2 performs a traffic information selection operation, an operation signal is transmitted from the control microcomputer 21 to the CPU 17g, which indicates that the operation has been performed. In step S2, the position A (X3, Y3) is detected and stored in the memory (RAM 17c), and then in step S2.
Move to 3. That is, the navigation unit 1 detects the position A when the operation signal is received by the GPS receiver 13 or the like and stores the position A (X3, Y3) in the RAM 17c.

In step S3, it is determined whether or not the traffic information can be received. If the traffic information can be received, the process waits, and if the traffic information cannot be received, the process proceeds to step S4. That is, since the reception state deteriorates after the provision of the traffic information is finished, the reception level of the reception state is compared with the reference level by the detection circuit or the like of the radio reception unit 2 to determine whether the reception is possible or not. In step S4, the position B (X4, Y4) in which reception is impossible is detected and stored in the memory, and the process proceeds to step S5. That is, when the reception level becomes lower than the reference level, the control microcomputer 21 outputs a non-detection signal to the navigation unit 1. The CPU 17g sets the position B when the signal is received to G
The position (X4, Y
4) is stored in the RAM 17c.

At step S5, the intermediate points (X5, Y5
) Is calculated and it moves to step S6. That is, the calculation is performed so that the midpoint between the points A and B is the registered point. This intermediate point may be simply a geometrical intermediate point of two points, or may be an intermediate point on the traveling road by the map matching method. In step S6, the intermediate point (X5, Y5)
Is registered in the memory and the process ends. That is, the calculated intermediate point is registered in the RAM 17c as the mark position. According to this method, the driver can easily register the mark point at the same time as receiving the traffic information by simply performing a reception operation of the traffic information.

The point B may not be detected as a point where the traffic information cannot be received, but may be instructed by a manual operation of the driver (or a passenger). Since the operation after the position detection at that time is exactly the same as the case of detecting and registering the reception level, description thereof will be omitted. As described above, in the present embodiment, the navigation unit automatically detects that the user has arrived at a pre-registered point and automatically sets the radio to the traffic information receiving state, so that the user will not overlook. Further, the position where the traffic information is provided can be registered in the navigation unit by a simple operation of simply setting the radio to the traffic information receiving state.

[0022]

As described above, according to the present invention, it is possible to provide the information receiving system in which the receiver can automatically receive the information when it comes to the point where the information is provided, and the driver can obtain the traffic information. There is no need to overlook and no need for troublesome operations.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a traffic information receiving system according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining a receiving operation of the traffic information receiving system according to the embodiment of the present invention, in which (a) is an ordinary road and (b) is an expressway.

FIG. 3 is a diagram for explaining a registration operation of a traffic information receiving system according to an embodiment of the present invention, where (a) is a case of traffic information reception switching point registration, and (b) is a case of waypoint registration. .

FIG. 4 is a flowchart for explaining waypoint registration operation of the traffic information receiving system according to the embodiment of the present invention.

[Explanation of symbols]

1 ... Navigation unit 14 ... Vehicle speed sensor 2 ... Radio receiving unit 15 ... LCD
Monitor 11 ... CD-ROM deck 21 ... Control microcomputer 12 ... Angular velocity sensor 22 ... PLL
Synthesizer tuner 13 ... GPS receiver 17 ... ROM

Claims (11)

[Claims] 1. A navigation system comprising a radio receiver and position detecting means for detecting the position of the vehicle, and displaying the position of the vehicle detected by the position detecting means together with map information on a display unit to provide road guidance. An apparatus, a mark point registration means for registering a point where a local information broadcast is performed as a mark point in the navigation device corresponding to the map information, and a predetermined range of the mark point where the vehicle is registered. Arrival detecting means for detecting that the vehicle has reached within a predetermined range of the mark point by the arrival detecting means, and the radio receiver for receiving the information broadcast. An information receiving system comprising: a reception control unit for controlling the above. 2. The control means changes the reception frequency of the radio receiver to the frequency of the information broadcast when the radio receiver is receiving another broadcast. Information receiving system described. 3. The control means turns on the power of the radio receiver while the power of the radio receiver is being cut off, and sets the reception frequency of the radio receiver to the frequency of the information broadcast. The information receiving system according to claim 1, wherein: 4. The control means constitutes an audio device in which the radio receiver is integrated with another sound source, and the control means controls the sound source when the other sound source is operating. The information receiving system according to claim 1, wherein the reception frequency of the radio receiver is set to the frequency of the information broadcast while switching to the radio receiver. 5. The mark point registration means registers the mark point together with a road type, and the arrival detection means is on the road of the same type as the registered road type, and the vehicle The information receiving system according to claim 1, wherein is detected to be within a predetermined range of the mark point. 6. The radio receiver includes operation signal output means for detecting that an operation for information broadcasting has been performed, and in the mark spot registration means, the operation signal output means detects an operation for receiving information broadcasting. The information receiving system according to claim 1, wherein the position of the vehicle detected by the position detecting means is registered as a mark point. 7. A level detecting means for detecting a received signal level of the information broadcast; and a radio receiver of the radio receiver when the level detecting means detects that the received signal level of the information broadcast has dropped below a predetermined level. The information receiving system according to claim 1, further comprising: a returning unit that stops the reception of the information broadcast and returns the radio receiver to the original state before the reception of the information broadcast. 8. The mark spot registration means is a spot where the information broadcast can be received while the vehicle is traveling at the mark spot and a spot where the information broadcast cannot be received while the vehicle is traveling. The information receiving system according to claim 1, wherein the mark point is registered as an intermediate point with respect to the point. 9. The information receiving system according to claim 8, wherein the point at which the information broadcast can be received is a point at which the radio receiver operates the information broadcast. 10. The point at which the information broadcast cannot be received is a point at which it is detected that the received signal level of the information broadcast has dropped below a predetermined value. Information receiving system described. 11. The information receiving system according to claim 1, wherein the arrival detecting means detects that the distance at which the vehicle can reach the registered mark point is within a predetermined range. .