JP2000224124A - Data broadcast retransmitter for mobile object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data broadcast retransmitter for mobile object that can receive many amounts of installation information in a short time, store and use the information without the need for an activated power supply through driving of a vehicle at all times. SOLUTION: This retransmitter is provided with an FM tuner 8 as a data reception means for receiving information data of a data broadcast for a mobile body, a storage device 17 as a storage means to store received data, a power amplifier 13 as a retransmission means that transmits stored data, and a CPU 14 as a retransmission control means that allows the power amplifier 13 to transmit prescribed data from among the stored data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to, for example, FM multiplex broadcasting,
The present invention relates to a retransmitting device that retransmits received data with a small output after receiving a data broadcast for a mobile body such as a digital broadcast.

[0002]

2. Description of the Related Art At present, a service is being planned in which data broadcasting for mobiles is performed by FM multiplex broadcasting (text broadcasting), digital broadcasting, and the like, received data is stored by a vehicle-mounted terminal, and called up and used when necessary.

For example, using one channel of the above-mentioned teletext,
In the case of a service that updates zero facility and event information about three times a day, about 200 pieces of information are provided in one week. Is not always available (the car is in operation), so it is not possible to receive all information and store it in memory.
Therefore, in order to more reliably receive the program, there is a method in which the data of about 200 items is constantly transmitted at a high update frequency.

[0004]

However, in the above-mentioned method of constantly updating the frequency of updating, it is necessary to allocate 14 channels or more. However, because of the need to update programs such as traffic information, weather information, and news more,
It is actually difficult to divide h. Also, a method of allocating many areas to information having real-time properties and transmitting memory information such as facility information in a small area over a long period of time is desirable from the viewpoint of effective use of radio waves.

The present invention has been made in view of the above problems, and is intended for a mobile body capable of receiving and storing a large amount of facility information in a short time without using a vehicle to turn on the power. An object of the present invention is to provide a data broadcast retransmission device.

[0006]

As shown in FIG. 11, according to the first aspect of the present invention, there is provided a data receiving means 50 for receiving information data of a data broadcast for a mobile object, and a storage means for storing the received data. 51, retransmission means 52 for transmitting the stored data, and retransmission control means 53 for transmitting predetermined data from the stored data to the retransmission means 52.

According to a second aspect of the present invention, in accordance with the first aspect, a storage control means for identifying whether storage in the storage means 51 is necessary based on an identification code in the received data and storing predetermined data. 54 is provided.

According to a third aspect of the present invention, in the first or second aspect, a request receiving unit 55 for receiving the request for the data content to be retransmitted is provided, and the retransmission control unit 53 is configured to Is transmitted to the retransmitting means 52.

[0009]

According to the data broadcasting retransmission apparatus 1 for mobile objects according to the present invention, the data receiving means 50 is provided.
Receiving information data of mobile data broadcasting transmitted from a general broadcasting device such as an FM radio station, and storing and storing the received data by the storage means 51; , Predetermined data is transmitted from the retransmission unit 52 by the retransmission control unit 53, so that the user receives data from the retransmission device 52 to receive a broadcast from a broadcast station in real time. Without receiving, large amounts of information can be received, stored, and used in a short time. In this case, the data from the retransmitting device 1 is received by, for example, a receiving device built in a car navigation device mounted on a vehicle,
Is displayed.

[0010] Further, since the retransmission control means 53 transmits predetermined data from the stored data, information of contents intended for a mobile body or information of contents closely related to an area can be selected from the broadcast information. Information can be retransmitted.

[0011] According to the data broadcasting retransmission apparatus 1 for mobile objects according to the second aspect of the present invention, the storage control means 53
Based on the identification code in the received data, the necessity of storage in the storage unit 51 is identified, and the predetermined data is stored in the storage unit 51.
The data of the information in which the use date and time is limited and the information in which the use area is limited, such as road congestion information, event information after the holding period, daily shopping information of a large suburban type store, etc., are stored in the storage means. It is possible to prevent the storage area 51 from being squeezed.

According to the data broadcasting retransmission apparatus 1 for mobile objects according to the third aspect of the present invention, the request for the data content to be retransmitted is received by the request receiving means 55,
Since the data corresponding to the received request is transmitted to the retransmission unit 52 by the retransmission control unit 53, the information required by the user can be retransmitted,
The convenience of the user can be improved, and the radio waves can be used effectively.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 to FIG.
FIG. 1 is a diagram for explaining a retransmission apparatus for data broadcasting for mobile objects according to a first embodiment of the present invention. FIG. 1 is an overall configuration diagram showing an example using the retransmission apparatus, and FIG. FIGS. 3 and 4 are views showing a configuration example of the apparatus, and FIGS. 3 and 4 are views showing display examples of a navigation apparatus that receives information retransmitted from the retransmitting apparatus. In FIG. 2, a broken line indicates a control signal, a solid line indicates an analog data signal, and a double line indicates a digital data signal.

In FIG. 1, 1 is a gas station,
Convenience store, car dealer, parking lot (including above ground and underground)
3 shows a retransmitting device installed in the premises of the facility 2 or in the building. The retransmitting device 1 is provided with a receiving antenna 4 for receiving an FM teletext broadcast transmitted from the wide area FM broadcasting station 3 and a transmitting antenna 6 for retransmitting the received information. When the retransmitting device 1 is installed in an underground facility such as an underground parking lot, the receiving antenna 4 is installed on the ground, and the transmitting antenna 6 is installed underground.

The wide-area FM broadcasting station 3 transmits character information including, for example, about ten pieces of facility information three times a day, and the transmitted information is received by the retransmission device 1. , Predetermined information data is stored and retransmitted from the retransmitting device 1. This retransmission is based on the 20 broadcasts transmitted from the FM broadcast station 3 in the past week.
Data of about 0 pieces of information is transmitted at a frequency different from that of the FM broadcast station 3 for about 5 minutes to 10 minutes for a mobile unit 5 within a radius of about 10 m with a small output that does not require a broadcasting license. In the required time. As the predetermined data, facility information or the like in a range where the vehicle can travel by car from the installation location of the retransmission device 1 is retransmitted.

The arc 7 in FIG. 1 schematically shows the reach of the retransmitted radio wave, and the mobile unit 5 within the range shows a navigation device (function) for receiving the retransmitted radio wave. (Not shown).

As shown in FIG. 2, the retransmitting device 1
An FM tuner (data receiving means) 8 for selecting a predetermined frequency from the FM radio waves received by the receiving antenna 4,
An FM multiplex decoder 9 for extracting character information from the FM radio wave of the selected frequency;
An FM modulator 10 that outputs a baseband signal (base signal) corresponding to an audio signal of M broadcast, and an MSK modulation that performs digital modulation from a digital data signal from the FM multiplex decoder 9 and outputs an SCA (multiplex) signal. Table 11
And a signal combiner 12 that combines the SCA signal from the MSK modulator 11 with the baseband signal from the FM modulator 10 to output an FM multiplex signal, and amplifies the output FM multiplex signal. A power amplifier (retransmission means) 13 for transmitting from the transmission antenna 6;

The operation of the retransmission device 1 is controlled by a control signal from a CPU (retransmission control means) 14. Specifically, the frequency selection signal is transmitted to the FM tuner 8. Is output to set the selected frequency of the FM tuner 8, a decoding control signal is output to the FM multiplex decoder 9 to control the extraction of character information, and a frequency selection signal is output to the FM modulator 10. , The frequency of the carrier at the time of modulation is set.

Further, the retransmitting device 1 includes the CPU 1
4 and storage devices 15, 16, and 17 for storing the decoded character information and the decoded teletext program data, respectively, as a receiving buffer. The external memory 18 to be performed is configured to be connectable to the retransmission device 1.

In this case, the CPU 14 stores the storage device 1 based on the identification code in the received data.
7, the storage device 17 functions as storage control means for determining whether storage as program data is necessary and storing predetermined data, and the storage device 17 functions as storage means for storing received data. The storage control of the program information in the storage device 17 is performed.

Next, referring to FIGS. 3 and 4, the operation of the retransmitting device 1 will be described from the display and operation of the navigation device mounted on the moving body 5. FIG.

In FIG. 3, reference numeral 19 denotes a display device of the navigation device. The display of information on the display device 19 includes characters, lines, pictures, symbols, and symbols of any size.
Liquid crystal panel 2 that can display maps and operate by touch
0 is used. The operation of the display device 19 may be performed by voice.

FIG. 3 shows a menu screen (initial screen) immediately after the start of the navigation device. In this initial screen, a menu title section 21 and a menu item section 2 are displayed.
2a to 22h and operation switches 23a to 23d are displayed. The bold arrow A on the operation switch 23d schematically indicates that the switch 23d is operated by contact.

In FIG. 3, reference numeral 29 denotes a selection frame indicating that the menu item is selected, and the selection frame 29 is moved to a desired item (for example, "text broadcast" by a predetermined operation (contact, voice instruction, etc.)). )) And turn on the operation switch (“select”) 23d to confirm the selection, thereby selecting a menu item. In addition,
In addition to the above-mentioned broken line frame 29, the display color and brightness may be different from those of the other menu items in order to distinguish the selection and non-selection of the menu items.

When the above-mentioned predetermined information for the past week has been retransmitted from the retransmission device 1, as shown in FIG. 3, "text broadcast" is selected from the menu screen and the retransmission is performed. When the reception of information is started, as shown in FIG. 4, the retransmission information is displayed on the display device 19 in the order of reception, and the displayed data is stored in the navigation device and used for redisplay.

The above-mentioned teletext data is composed of one-line headers 24a and 24a each having an identification code and designating a source and characteristics of information.
The text broadcast data on the liquid crystal panel 20 is composed of the first-stage 25
Only the header a is displayed with both the header 24a and the text content 24b, and only the content of the text is displayed in the second row 25b to the fourth row 25d. Note that the character information shown in FIG. 4 is configured to display the content of one piece of information in four screens.

Also, as described above, the retransmission data is
The storage data whose necessity is identified is transmitted by the function of the storage control means of the CPU 14, and information content according to the reception area, reception date and time, and the like of the retransmission data is displayed.

As described above, the information transmitted from the wide-area FM broadcasting station 3 is received, the received data is stored and stored in the storage device 17, and a predetermined data is stored from the stored data. Since the retransmission is performed, the user can receive the data from the retransmission device 1 to receive the broadcast from the wide area FM broadcasting station 3 in real time, or keep the navigation device in a power-on state. A large amount of information can be received, stored, and used in a short time without maintaining it.

Since the predetermined data is transmitted from the data stored in the storage device 17, the information broadcasted from the wide-area FM broadcasting station 3 includes information on contents for mobile units, Can be retransmitted.

Further, based on the identification code in the received data, the CPU (storage control means) 14 determines whether or not storage in the storage device 17 is necessary.
Since the predetermined data is stored, the data of the use date and time or the use area such as daily traffic information such as road congestion information, event information after the holding period, daily shopping information of a large suburban type store, etc. is limited to the above data. It is possible to prevent the storage area of the storage device 17 from being pressed.

Next, based on FIG. 5 to FIG.
A retransmission apparatus for data broadcasting for mobile objects according to a second embodiment of the present invention will be described. FIGS. 5 to 10 are diagrams showing display examples of a navigation device for receiving information retransmitted from a retransmission device for data broadcasting for mobile objects according to the second embodiment. The display and operation of the navigation device mounted on the moving body 5 will be described. Note that the second embodiment relates to the retransmission device 1 when a user makes a request for retransmission information to the retransmission device 1 of the first embodiment. Description is omitted. The same reference numerals as those in FIG. 3 indicate the same or corresponding parts.

FIG. 5 shows the menu items on the menu screen (initial screen) immediately after the start of the navigation device.
A display example of the display device 19 as a line is shown. In this example, a menu title section 26 and a menu item section 27 are displayed.
a to 27f and operation switch units 28a to 28h are displayed.

When the user selects "drive information" from the menu screen shown in FIG. 5, a submenu screen shown in FIG. 6 is displayed. When the user requests the latest information on any of the items 1 to 4 on the submenu screen and requests the retransmission device 1 for information, the latest information on the requested item is displayed on the retransmission device 1. And is displayed on the display device 19.

The request for the information is made by transmitting the item number of the menu to the retransmitting device 1 by, for example, a portable telephone. Then, when the menu item number is transmitted to the retransmitting device 1, a predetermined data is transmitted from the program data stored in the storage device 17 by the function of the retransmission control means of the CPU 14 based on the menu item number. Will be sent.

In this case, the CPU 14 functions as a request receiving means, and the item number of the menu transmitted from the portable telephone is transmitted via the external memory 18 to the CP.
It is input (received) to U14 and used for retransmission control processing by the CPU.

When "1" is received as the item number, the latest information content of "1. Meal information to be selected in the car" shown in FIG. The latest information content of “2.
When "3" is received, the latest information content of "3. attention spot information" shown in FIG.
The latest information contents of "4. Traffic-related information" shown in (1) are retransmitted, received and displayed on the navigation device, and the displayed data is stored in the navigation device and used for redisplay. .

As described above, since the request for the information content to be retransmitted is received from the retransmitting device 1 and the data is transmitted in response to the request, the information required by the user can be retransmitted. It is possible to improve the convenience of the user and to effectively use the radio wave.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an example using a retransmission device for data broadcasting for mobile objects according to a first embodiment of the first and second aspects of the present invention.

FIG. 2 is a diagram illustrating a configuration of the retransmission device.

FIG. 3 is a diagram illustrating a display example of a navigation device that receives information retransmitted from the retransmission device.

FIG. 4 is a diagram illustrating a display example of a navigation device that receives information retransmitted from the retransmission device.

FIG. 5 is a diagram showing a display example of a navigation device for receiving information retransmitted from a retransmission device for data broadcasting for mobile objects according to a second embodiment of the third invention.

FIG. 6 is a diagram illustrating a display example of a navigation device that receives information retransmitted from the retransmission device.

FIG. 7 is a diagram showing a display example of a navigation device that receives information retransmitted from the retransmission device.

FIG. 8 is a diagram illustrating a display example of a navigation device that receives information retransmitted from the retransmission device.

FIG. 9 is a diagram illustrating a display example of a navigation device that receives information retransmitted from the retransmission device.

FIG. 10 is a diagram illustrating a display example of a navigation device that receives information retransmitted from the retransmission device.

FIG. 11 is a diagram showing the configuration of the claims of the present invention.

[Explanation of symbols]

Reference Signs List 1 retransmission device 8 FM tuner (data receiving means) 13 power amplifier (retransmission means) 14 CPU (retransmission control means, storage control means, request receiving means) 17 storage device (storage means)

Claims (3)

[Claims] 1. A data receiving means for receiving information data of a mobile data broadcast, a storage means for storing the received data, a retransmitting means for transmitting the stored data, Retransmission control means for transmitting predetermined data from the data to the retransmission means. 2. A storage control device according to claim 1, further comprising storage control means for determining whether storage in said storage means is necessary based on an identification code in said received data and storing predetermined data. Retransmission device for data broadcasting for mobile objects. 3. The method according to claim 1, further comprising request receiving means for receiving the request for the data content to be retransmitted, and wherein the retransmission control means transmits the data corresponding to the received request to the request for retransmission. A retransmitting apparatus for data broadcasting for mobile objects, wherein the retransmitting apparatus transmits the data broadcast to a transmitting unit.