JP2004265109A - Emergency information transmission system and in-vehicle receiving device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an emergency information transmission system which transmits information of a TV station or a radio station broadcasting detailed information as broadcast station information, and which automatically tunes a relevant broadcast station by an in-vehicle equipment when emergency information is transmitted. <P>SOLUTION: The emergency information and the broadcast station information of the TV station or the radio station, which broadcasts the detailed information about the emergency information, are included in the transmitted emergency information data. The in-vehicle equipment selects a receivable broadcast station from the broadcast station information, automatically switches output, and outputs the broadcasting from the broadcast station. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a communication system that receives emergency information and notifies a user of the emergency information, and particularly relates to a vehicle-mounted terminal.
[0002]
[Prior art]
Currently, a VICS (Vehicle Information And Communication System) service for providing users with traffic-related information and information on the vicinity of a destination via an optical beacon, a radio beacon, and FM multiplex broadcasting has been put to practical use. The information transmitted from the VICS center includes emergency information such as traffic accident information and disaster information, and such information is notified to the user via an on-board device compatible with the VICS, and the user's action is taken. Is urging. The emergency information is transmitted from the VICS center as voice data or text data, and the emergency information received by the in-vehicle device can display characters or simple figures on a display device or notify the user by voice output. (For example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-8-330993 ([0055], FIGS. 7 to 9).
[0004]
[Problems to be solved by the invention]
However, in the above system, since the outline of the emergency information is transmitted as data, only very limited information can be provided due to a problem such as a data transfer speed. Further, even if only text data having a relatively small amount of information is transmitted, the user needs to visually recognize the character information displayed on the screen, and it is difficult to confirm when the information is notified during traveling. At present, the only way to obtain more detailed information from the received information is to manually search for a television or radio broadcast station. As described above, a complicated operation is required for the driver who has recognized the emergency information to set a broadcasting station that broadcasts detailed information related to the emergency information such as a television and a radio.
[0005]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a device that can relatively easily acquire detailed information related to emergency information when the emergency information is received. It is another object of the present invention to provide an emergency information communication system capable of acquiring such information.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the invention described in claim 1, the first broadcast station transmitting emergency information such as accident information and disaster information to the vehicle transmits detailed information related to the emergency information by the information collecting means. Broadcast station information of a second broadcast station to be broadcasted is collected, and the broadcast station information is transmitted together with emergency information by transmitting means. In the on-vehicle device for notifying the occupant of emergency information, the second broadcasting station is automatically selected by the selecting means based on the broadcasting station information received by the receiving means, and the automatically selected second broadcasting station is selected. It is characterized in that output processing is performed by the control means so that the broadcast from the TV receiver can be received and output in the vehicle.
[0007]
Therefore, the first broadcast station transmits information including the broadcast station information of the second broadcast station that is broadcasting the emergency information and detailed information related to the emergency information, so that the on-board unit automatically transmits the second information. , And the driver can obtain detailed contents of the emergency information relatively easily without performing a manual tuning operation by the driver.
[0008]
According to the second aspect of the present invention, the second broadcast station is a television and / or radio broadcast station. That is, the first broadcast station is a station that collects and transmits information including emergency information and broadcast station information, and the second broadcast station is a television and / or radio that broadcasts detailed information related to the emergency information. Is a broadcasting station. Therefore, the user can automatically and relatively easily select a television or radio station that broadcasts detailed information related to emergency information, instead of manually operating it.
[0009]
In the invention according to claim 3, when the first broadcast station detects a change in emergency information or broadcast station information, the first broadcast station updates information to be transmitted. As a result, even if new information is added to the emergency information or the receivable broadcast station changes due to movement, the onboard unit can always receive the latest information and output the broadcast of the appropriate broadcast station It becomes. Therefore, it is possible to prompt the driver to take appropriate measures based on the latest information.
[0010]
According to a fourth aspect of the present invention, the broadcast station information includes a broadcast band or frequency or channel, a position of the broadcast station, and a broadcastable radius. That is, the broadcast station information transmitted from the first broadcast station includes information necessary for identifying a receivable area and selecting a station. As a result, the in-vehicle device can extract a receivable broadcast station from the current position, and it is relatively easy to select a broadcast station to output a broadcast. Further, since the approximate reception sensitivity can be calculated by specifying the receivable area, it is possible to more reliably notify the occupant.
[0011]
6. The broadcast receiving apparatus according to claim 5, wherein the receiving unit broadcasts emergency information including accident information and disaster information, and broadcast station information of a second broadcast station that broadcasts detailed information related to the emergency information. Receiving, and automatically selecting one of the second broadcast stations based on the broadcast station information by the tuning means, receiving the broadcast from the second broadcast station selected by the control means, and performing output processing. And According to a sixth aspect of the present invention, the second broadcast station is a television and / or radio broadcast station.
[0012]
This allows the user to relatively easily obtain detailed information related to emergency information broadcast by television or radio without performing special operations.
[0013]
According to a seventh aspect of the present invention, the broadcast station information includes a broadcast band or frequency or channel, a position of the broadcast station, and a broadcastable radius. That is, the broadcast station information transmitted from the first broadcast station includes information necessary for specifying the broadcast station and the receivable area and selecting a station. Therefore, the on-vehicle device can extract a receivable broadcast station from the current position, and it is relatively easy to select a broadcast station to output a broadcast. In addition, since the approximate reception sensitivity can be calculated by specifying the receivable area, the occupant can be more reliably notified.
[0014]
Further, when the broadcast from the broadcasting station being output in the vehicle becomes poorly received or unreceivable due to the movement of the vehicle, the broadcasting station is re-established based on the broadcasting station information as in the invention according to claim 8. It is characterized by automatic tuning. Therefore, even if it becomes difficult to obtain detailed information related to emergency information due to the movement of the vehicle, it is relatively easy to obtain detailed information from a newly selected broadcasting station without special operation. It is possible to do.
[0015]
According to the ninth aspect of the present invention, among the receivable broadcast stations extracted based on the broadcast station information, the first extracted broadcast station, the broadcast station with the highest reception sensitivity, or the most current It is characterized in that a nearby broadcasting station is automatically selected by a tuning means. That is, the channel selection by the channel selection means can be performed based on the reception sensitivity, the distance, and the like, and can be selected. Therefore, it is also possible to change the tuning method according to the situation or the user's preference, or to change the tuning method according to the type of emergency information.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to a navigation device will be described with reference to FIGS.
[0017]
FIG. 1 is a configuration diagram showing a configuration of an emergency information communication system according to one embodiment of the present invention. The emergency information communication system includes a TV / radio station 1, an external infrastructure such as an information center 2 and a roadside transmitter 3, and an in-vehicle receiving device that performs notification processing of emergency information. In this embodiment, the TV / radio station 1 corresponds to a second broadcasting station, and the external infrastructure corresponds to a first broadcasting station.
[0018]
The TV / radio station 1 is a broadcasting station including a private broadcast and a public broadcast, and transmits various information including emergency information such as accident information and disaster information. The information center 2 (corresponding to an information collecting means) is composed of a VICS center and the like, and collects information to be transmitted to the vehicle-mounted device and creates emergency information data including emergency information and broadcast station information. The created emergency information data is transmitted to the on-vehicle device via the on-road transmitter 3 (corresponding to transmitting means) such as FM multiplex broadcasting, optical beacon, radio beacon, or ETC.
[0019]
The on-vehicle device includes an external information input / output device 4 for receiving information from an external infrastructure, a TV receiver 6 and a radio receiver 7 for receiving a broadcast from a broadcasting station, and a navigation device for processing and controlling the received information. 5 and a video / audio mode management device 8, an audio switch 9 and an image switch 10 for switching information to be output, and a speaker 11 and a display device 12 as notification means. In addition, individual devices and devices include a data communication line 13a, a data communication line 13b, a navigation video signal line 14, a TV video signal line 15, a TV audio signal line 16, a radio audio signal line 17, an audio switching control signal line 18, They are connected by a video switching control signal line 19. In the present embodiment, the external information input / output device 4 corresponds to a receiving device, and the navigation device 5 and the video / audio mode management device 6 realize a function corresponding to a channel selecting device and a control device.
[0020]
The emergency information data is received by the external information input / output device 4 via the beacon antenna 4a and transmitted to the navigation device 5 via the data communication line 13a. The emergency information data may be transmitted via a mobile phone network or a wireless communication network. In this case, the emergency information data is received by a mobile phone or a wireless receiver (not shown) instead of the beacon antenna 4a. Will do.
[0021]
The navigation device 5 is a device for displaying a map, traffic congestion information, or emergency information on the display device 12 via the navigation video signal line 14, and for providing route guidance by voice. The navigation device 5 is configured similarly to a known navigation device, and has a function of extracting a receivable broadcast station from the current position, in addition to the above functions. Further, the navigation device 5 divides the emergency information data received from the external information input / output device 4 into emergency information and broadcast station information, displays the emergency information on the display device 12, and can receive at the current position from the broadcast station information. The broadcast station is extracted and transmitted to the video / audio mode management device 8.
[0022]
The video / audio mode management device 8 is a control device that controls the output of video and audio, and controls the audio switch 9 and the video switch 10 via the audio switching control signal line 18 and the video switching control signal line 19. The video / audio mode management device 8 arbitrarily selects one broadcast station from the list of receivable broadcast stations sent from the navigation device 5. At this time, there are various selection methods. For example, a method of selecting the first broadcast station in the broadcast station list arranged in the order of reception or distance from the current location, or (distance between the broadcast station and the current location) and ( A method may be used in which a broadcast station having the smallest quotient of the broadcast station's broadcastable range) has the highest reception sensitivity and a broadcast station that is assumed to have the highest reception sensitivity is selected. The selection method may be set in advance by the user.
[0023]
The TV receiver 6 and the radio receiver 7 receive the broadcast from the TV / radio station 1 via the TV antenna 6a and the radio antenna 7a, and output a video and / or an audio according to a signal from the video / audio mode management device 8. I do.
[0024]
The display device 12 and the speaker 11 receive an output from the TV receiver 6 or the radio receiver 7, and display an image or output sound. Here, a TFT liquid crystal display is mainly used as the display device 12, but a CTR display device or the like may be used.
[0025]
Next, a processing operation in the emergency information communication system using the system having the above configuration will be described with reference to FIGS.
[0026]
First, in FIG. 2, the information center 2 collects information on serious accidents and disasters from police, fire departments, the Japan Highway Public Corporation, etc., and determines whether or not to notify the onboard unit as emergency information based on the information (step S100). ). If it is determined that the notification is necessary, the mobile station creates emergency information data including the emergency information and searches for a television and radio broadcasting station that is broadcasting the information at the present time (step S101). If there is a corresponding broadcast station, broadcast station information is created and added to the emergency information data. It should be noted that the presence or absence of a broadcast station is constantly checked and updated in real time. In addition, the presence or absence of a broadcasting station is confirmed by collecting broadcast schedules of television and radio broadcasting stations. It is assumed that the broadcast station information includes the band (TV / FM / AM), frequency, or television channel of the broadcast station, the position of the broadcast station, and the broadcastable radius. After creating the emergency information data including the broadcast station information, the information center 2 transmits the emergency information data to the vehicle-mounted device via the on-road transmitter 3 (step S102).
[0027]
On the vehicle-mounted device side, after receiving the emergency information data at the external information input / output device 4, the emergency information data is transmitted to the navigation device 5 via the data communication line 13a. After receiving the emergency information data, the navigation device 5 divides the emergency information data into emergency information and broadcast station information, and displays the emergency information on the display device 12 (step S103). Further, based on the broadcast station information included in the emergency information data, it is determined from the position of the broadcast station and the broadcastable radius whether or not it is possible to receive at the current vehicle position, and the receivable broadcast station is extracted ( Step S104). Then, the navigation device 5 rearranges the extracted list of television stations and / or radio stations in a predetermined order, and transmits the list to the video / audio mode management device 8 via the data communication line 13b (step S105). The video / audio mode management device 8 arbitrarily selects one broadcast station from the received broadcast station list (step S106), and controls switching between video and audio according to the selected broadcast station.
[0028]
When a TV station is selected by the video / audio mode management device 8, the video / audio mode management device 8 sets a TV channel to be received to the TV receiver 6 so that a data communication line is set to output video and audio. An instruction is given by a communication command via 13b (FIG. 3A: step S107). After receiving the communication command, the TV receiver 6 sets the instructed television station to be a broadcasting station to output, and starts video output and audio output (step S108). In addition, the fact is notified to the video / audio mode management device 8 via the data communication line 13b using a communication command (step S109). After confirming that the TV receiver 6 has started outputting video and audio, the video / audio mode management device 8 switches the video switch 10 and the audio switch 9 to the TV side, and outputs the TV video from the speaker 11 and the display device 12. Processing is performed so that sound can be output (step S110).
[0029]
On the other hand, even when the video / audio mode management device 8 determines that the transition to the radio station is to be performed, the same process as the above process is performed between the video / audio mode management device 8 and the radio receiver 7. In this case, as shown in FIG. 3B, the video / audio mode management device 8 sets the radio frequency to be received to the radio receiver 7 via the data communication line 13b so as to output audio. Instruction is given by a communication command (step S111). After receiving the communication command, the radio receiver 7 sets the designated radio station as a broadcast station to be output, and starts audio output (step S112). In addition, the fact is notified to the video / audio mode management device 8 via the data communication line 13b using a communication command (step S113). After confirming that the radio receiver 7 has started outputting sound, the video / audio mode management device 8 switches the sound switch 9 to the radio side and performs processing so that radio sound can be output from the speaker 11 (step S114). .
[0030]
In the above-described emergency information communication system according to the present embodiment, when an information center transmits emergency information, information on a television station or a radio station that broadcasts detailed information related to the emergency information is transmitted as broadcast station information. Therefore, by processing the broadcast station information in the vehicle-mounted device, it is possible to automatically select a receivable broadcast station. In addition, the in-vehicle device notifies the user of the received emergency information, extracts a receivable broadcast station from the broadcast station information, arbitrarily selects one broadcast station, and outputs the broadcast of the broadcast station. . Therefore, it is possible to automatically select a broadcasting station and output a broadcast, so that a user can obtain detailed information related to emergency information without performing complicated operations.
[0031]
When switching to the radio sound, it is not necessary to switch the display screen, but if the screen before switching is a television, if the screen is left as a television, the screen and the audio will not match, so the navigation device In some cases, a process for returning to the screen 5 is required. In this case, when switching the audio switch 9 to the radio in step S114 of FIG. 3B, the video switch 10 may switch to the navigation side and output the navigation screen to the display device 12.
[0032]
On the other hand, when it becomes difficult to receive the broadcast from the selected broadcasting station due to a decrease in the receiving sensitivity or the like, the video / audio mode management device 8 selects another candidate in the broadcasting station list, and selects the selected broadcasting station. May be performed to switch the audio switch 9 and the video switch 10 so as to output the broadcast.
[0033]
When a television broadcast is output during traveling, only a sound may be output without outputting a television image, similarly to a conventional navigation device. Then, when only the sound is output, the broadcast may be recorded so that the broadcast can be played back while the vehicle is stopped.
[0034]
Furthermore, depending on the broadcast station list from which receivable broadcast stations have been extracted, selection or output method of television or radio, whether output is possible or not can be selected by the user by display or voice message, so that unnecessary output can be avoided. Good.
[0035]
When a plurality of broadcast stations are present in the broadcast station information so that a broadcast station with higher reception sensitivity can be received when selecting a broadcast station, all the broadcast stations in the broadcast station information are transmitted to the TV receiver 6. Alternatively, a method of transmitting to the radio receiver 7 and allowing the TV receiver 6 or the radio receiver 7 to select a broadcasting station having the highest reception sensitivity may be used.
[0036]
In the present invention, since the navigation device 5 is not necessarily required, the navigation device 5 may not be included as a component. When the navigation device 5 is not included in the components, the data communication line 13a and the data communication line 13b are deleted, a data communication line 13c is provided instead, and the external information input / output device 4 is connected via the data communication line 13c. Information exchange between the TV receiver 6, the radio receiver 7, and the video / audio mode management device 8 is directly performed.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a system according to an embodiment of the present invention.
FIG. 2 is a sequence diagram of a process according to an embodiment of the present invention.
FIG. 3 is a sequence diagram showing processing after (a) switching to a television station and (b) switching to a radio station after the processing of FIG. 2;
[Explanation of symbols]
REFERENCE SIGNS LIST 1 TV / radio station 2 Information center 3 Roadside transmitter 4 External information input / output unit 5 Navigation device 6 TV receiver 7 Radio receiver 8 video / audio mode switching device 9 audio switching device 10 video switching device 11 speaker 12 display device

Claims (9)

In an emergency information communication system having a first broadcast station that transmits emergency information to a vehicle and an in-vehicle device that notifies an occupant of the received emergency information,
The first broadcasting station,
Information collecting means for collecting broadcast station information of a second broadcast station that is broadcasting detailed information related to the emergency information,
Transmitting means for transmitting information including the broadcast station information and the emergency information collected by the information collecting means,
The in-vehicle device,
Receiving means for receiving information including the broadcast station information and the emergency information transmitted from the transmitting means,
Channel selecting means for automatically selecting the second broadcast station from the broadcast station information received from the receiving means,
Control means for receiving a broadcast from the second broadcasting station selected by the tuning means and performing output processing on the received broadcast. The emergency information communication system according to claim 1, wherein the second broadcasting station comprises a television and / or radio broadcasting station. The emergency information communication according to claim 1, wherein the first broadcast station updates the information to be transmitted by the transmission unit when detecting the change of the emergency information and / or the broadcast station information. system. 4. The emergency information communication system according to claim 1, wherein the broadcast station information includes a broadcast band or a frequency or a channel, a position of the broadcast station, and a broadcastable radius. 5. Receiving means for receiving predetermined broadcast station information and emergency information transmitted from the first broadcast station,
Channel selection means for automatically selecting a second broadcast station that is broadcasting detailed information related to the emergency information based on the broadcast station information,
Control means for receiving a broadcast from the second broadcasting station that has been automatically selected and performing an output process. The in-vehicle receiving device according to claim 5, wherein the second broadcasting station comprises a television and / or radio broadcasting station. 7. The broadcast station information according to claim 5, wherein the broadcast station information includes a broadcast band or a frequency or a channel capable of specifying the second broadcast station, a position of the broadcast station, and a broadcastable radius. In-vehicle receiver. When the broadcast from the second broadcasting station automatically selected by the tuning means becomes reception failure or reception failure, the tuning means automatically selects a channel again based on the broadcast station information. The in-vehicle receiving device according to any one of claims 5 to 7. The tuning means extracts a plurality of receivable second broadcast stations based on the broadcast station information, and first extracts the second broadcast station or the second broadcast having the highest reception sensitivity. The in-vehicle receiving device according to any one of claims 5 to 8, wherein a station or the second broadcasting station closest to the current position is automatically selected.

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