JP2005323051A - Method and system for display, and ground-side device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and system for display, and a ground-side device that can more speedily (in real time) and flexibly display information on a road indication board, an advertisement board, an advertisement tower, etc. <P>SOLUTION: Information needed for display on the road indication board and of advertisement is broadcast through a broadcasting satellite and is received by a road indication board side and an advertisement board side arranged at specified points of, for example, a freeway to be displayed on the road indication board and the advertisement board, so that the information can more speedily (in real time) and flexibly be displayed on the road indication board, advertisement board, advertisement tower, etc. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a display method, a display system, and a ground side device applied to, for example, a road display board, an advertising board, an advertising tower, etc. installed on an expressway.

  Conventionally, information is displayed on a road display board, an advertising board, an advertising tower, etc. by a picture or character signboard, an outdoor audio broadcasting device, an electric bulletin board, or the like.

  However, the signboard has a drawback that its contents are fixed and cannot be changed easily, and the outdoor audio broadcasting apparatus has a disadvantage that it cannot display a still image or a moving image.

In addition, electronic bulletin boards send and display display contents wirelessly or by cable, but can be viewed only in a very narrow range, and nationwide display is impossible. For example, highway traffic congestion information is generally limited to the latest information, and there has been no service that allows a driver to see traffic congestion information at a destination by looking at a road display board while driving on the highway.
JP 2002-304445 A

  In view of the above circumstances, the present invention provides a display method, a display system, and a ground side device that can display information on a road display board, an advertising board, an advertising tower, etc. more quickly (in real time) and more flexibly. It is intended to provide.

  As an example of the object of the present invention, for example, it can be performed all over the country or limited to a specific area or individual.

(1) In order to solve such a problem, the display method of the present invention broadcasts first information necessary for display of a road display board via a broadcast satellite, and displays the display apparatus via a receiver that receives the broadcast. And displaying the first information.

  A display system according to another aspect of the present invention includes a broadcasting satellite capable of broadcasting first information necessary for display of a road display board, a receiving device that receives the broadcast, and the received first first information. And a ground-side device having a display device for displaying the above information.

  A ground-side device according to still another aspect of the present invention includes a receiving device capable of receiving a broadcast including first information necessary for display on a road display board, and the received first information. And a display device for displaying.

  In another method of the present invention, the first information necessary for displaying an advertisement is broadcast via a broadcasting satellite, and the first information is displayed on a display device via a receiving device that receives the broadcast. It is characterized by that.

  A display system according to another aspect of the present invention includes a broadcast satellite capable of broadcasting first information necessary for displaying an advertisement, a receiving device that receives the broadcast, and the received first information. And a ground-side device having a display device for displaying.

  A ground-side device according to still another aspect of the present invention displays a receiving device capable of receiving a broadcast including first information necessary for displaying an advertisement, and the received first information. And a display device.

Here, in the present invention, information necessary for displaying a road display board or advertisement is broadcast via a broadcasting satellite, and the information is transmitted on a road display board side or an advertisement board side disposed at a predetermined point such as an expressway. Since the information is received and displayed on the road display board or advertising board, the information can be displayed on the road display board, advertising board, advertising tower, etc. more quickly (in real time) and more flexibly. it can.
(2) As a display device according to the present invention, there is a road display board arranged on a road. For example, destination guidance set on an expressway or congestion of roads.

As a receiving apparatus according to the present invention, there is a terminal apparatus that is mounted on or sometimes brought into an automobile. More specifically, for example, a terminal device used for mobile broadcasting scheduled to be operated from July 2004 is preferable. The amount of information broadcasted is large, and it is possible to provide a high-definition and quick service. As a display device in that case, for example, a display unit in a car navigation system mounted on an automobile can be used as the display device according to the present invention.
(3) In the present invention, information related to the advertisement may be broadcast via a broadcasting satellite in addition to the information necessary for displaying the road display board, and the advertisement may be intermittently displayed on the display device. As an intermittent display method, it is possible to repeatedly broadcast information related to advertisements at a predetermined timing from the broadcast side. However, information related to advertisements is temporarily stored in the ground side device, and the stored information related to advertisements is stored in a predetermined manner. It may be displayed at intervals.
(4) In the present invention, information specifying a display area is broadcast via a broadcasting satellite, and the position of the display device specified by a position detection function for detecting the position of the display device is within the display area specified by the information. The information necessary for displaying the road display board and the advertisement may be displayed.

  This makes it possible to provide road information and advertisements that match each specific area. (5) In the present invention, information serving as a unique identifier (for example, address) of the receiving device is broadcast via a broadcasting satellite, and the receiving device displays road information and advertisement on the display device when the information matches. May be. The identifier may be stored in a receiving device or a memory that can be attached to and detached from the receiving device, or may be a mechanism that is generated each time.

  Thereby, it is possible to display necessary information for all the receiving apparatuses installed from the minimum one. Therefore, for example, if a database having a correspondence between user preferences and addresses is prepared, advertisements that match individual preferences can be provided. In the present invention, not only such a problem of preference, but from the user's point of view, since it is not possible to provide an extra junk advertisement like some Internet services, the reliability of the advertisement is increased, As a result, the effect as an advertisement becomes very high and valuable.

  As described above, in the present invention, it is possible to display information on a road display board, an advertising board, an advertising tower, etc. more quickly (in real time) and more flexibly.

Embodiments according to the present invention will be described below in detail with reference to the drawings.
(Whole system)

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

  As shown in the figure, in this embodiment, program data and the like are transmitted from the broadcast station 1 to the broadcast satellite 2 via the uplink. The broadcast satellite 2 that has received the program data or the like transmits the program data or the like to the ground via a digital satellite broadcast wave. The ground side device 3 receives the digital satellite broadcast wave transmitted from the broadcast satellite 2.

The digital satellite broadcasting is not only for non-mobile receiving terminals such as offices, homes, etc., but also for mobile receiving terminals such as in-vehicle and mobile devices. The multi-channel service is provided. In the present embodiment, this system is used to broadcast information necessary for the road display board using a dedicated channel or subchannel for broadcasting information necessary for display of the road display board, and the ground side device 3 receives the information. Information is provided.
(Broadcasting equipment)

  FIG. 2 is a block diagram showing the configuration of the broadcast side apparatus. The configuration of the broadcast side apparatus may be mounted on, for example, the broadcast satellite 2 shown in FIG. 1, but may be partly mounted on the ground side, for example, the broadcast station 1 side.

  In FIG. 2, 11 is a video / audio signal encoding processing unit, 12 is a receiving device address generation unit, 13 is a multiplexing processing unit, 14 is a modulation unit, 111 is a route guide displayed on the display device, speed limit, and traffic congestion. , Analog display video / audio signals for road information necessary for driving such as weather guidance, regulations, services, etc., 112, 113, 114 are interfaces, and 115 is a transmission signal.

  Here, when the display video / audio signal 111 arrives, the encoding processing unit 11 converts it into a digital signal and sends it to the multiplexing processing unit 13 via the interface 112. Further, according to the content of the road information, the address of the receiving device on which the information is to be displayed is generated as a digitized signal from the receiving device address generating unit 12 and sent to the multiplexing processing unit 13 via the interface 113.

In addition to the address of the receiving device, the receiving device address signal includes a program number, a broadcast start date and time, a broadcast end date and time, and a playback condition, which are information determined at the time of so-called “road information programming”. . The display video / audio signal and the receiving device address signal are multiplexed by the multiplexing processing unit 13, sent to the modulation unit 14 via the interface 114, and modulated. The modulated signal is sent to a transmission output unit (not shown) via the interface 115 and transmitted.
(Ground equipment)

  FIG. 3 is a block diagram showing a configuration of the ground side apparatus 3 shown in FIG. The ground side device 3 includes a receiving device and a display device, which may be integrated or may be separated. In addition, as shown in FIG. 4, for example, the ground side device 3 can be exemplified by a road display board 4 arranged on an expressway. Good. Of course, a terminal device installed in a car or a terminal device brought into the car may be used. In this case, for example, a display unit in a car navigation system can be shared as a display device.

  In FIG. 3, 21 is a demodulation unit, 22 is a demultiplexing unit, 23 is a video / audio reproduction processing unit, 24 is a receiving device address processing unit, 25 is a microprocessor, 26 is an auxiliary storage device, 27 is a display device, and 28 is Address generating unit of receiving apparatus, 211 is a received display video / audio signal and multiplexed signal of receiving apparatus address signal, 212, 213, 214, 215, 216, 217, 218 are interfaces, 219 is a video / audio reproduction signal Indicates the output.

  When the received display video / audio signal and receiving device address signal 211 arrive, the demodulator 21 demodulates the digital code and sends it to the demultiplexer 22 via the interface 212. The demultiplexing unit 22 separates the video / audio signal for display and the receiving device address signal and sends them to the video / audio reproduction processing unit 23 and the receiving device address processing unit 24 via the interface 213.

  The video / audio reproduction processing unit 23 decodes the video / audio signal. The receiving device address processing unit 24 decodes the receiving device address signal and sends the information to the microprocessor 25 via the interface 215.

  The microprocessor 25 reads the address information of the receiving device from the address generation unit 28 via the interface 217 and compares it with the receiving device address sent via the interface 215 to determine whether they match.

  If they match, the playback condition sent via the interface 215 is discriminated. In the case of emergency broadcast or real-time broadcast, the video / audio playback signal being received is displayed on the video / audio playback processing unit 23 via the interface 215. Give a command to play and display. The video / audio reproduction processing unit 23 reproduces this and displays it on the display device 27 via the interface 219.

  When the reproduction condition is repetitive broadcasting, the display video / audio reproduction signal before decoding and the receiving device address signal are temporarily stored in the auxiliary storage device 26 via the interfaces 214 and 216, respectively, and are called and reproduced according to the reproduction condition.

The address generator 28 generates an address using a switch or a read only memory (ROM). As another method, the address generator can have a rewritable memory (flash memory, etc.), and the address can be downloaded by the engineering service function used in digital broadcasting and used as the address of the receiving device. It is. If comprised in this way, the address of a receiver can be set dynamically from a broadcasting apparatus.
(Receiver address information)

  FIG. 5 is a diagram showing an example of a part related to the present invention of the receiving device address information.

  In FIG. 5, 31 indicates a basic format, and 32 indicates a reproduction condition flag.

  Here, the “program number” is determined by the content of the road information. For example, it is used to classify information such as traffic jam information, accident information, weather information, facility guidance, and emergency information, and is referred to when reproducing.

  “Broadcast start date and time” and “broadcast end date and time” are used to determine the program length at the time of playback and to determine the playback conditions. These program numbers, broadcast start date and time, and broadcast end date and time are also used to determine the storage location of the auxiliary storage device.

  The “regeneration condition flag” is used to display information most necessary for the driver at that time on the display device. In the example indicated by reference numeral 32 as the reproduction condition flag, flags at four positions “0”, “1”, “2”, and “3” are shown.

  If the binary number 1 is present at the position “0”, this indicates that the broadcast is emergency broadcast such as accident information, and is displayed on the display device 27 in preference to all reproduction / display.

  Similarly, the position “1” indicates real-time broadcasting, and the received display video / audio reproduction signal is reproduced and displayed on the display device 27.

At the positions “2” and “3”, the received video / audio reproduction signal for display is temporarily stored in the auxiliary storage device 26 and reproduced. The playback time interval can be changed with the flags of positions 2 and 3. For example, if it is 0 and 1, the video / audio playback signal for display stored in the auxiliary storage device 26 is reproduced and displayed on the display device 27 at intervals of 10 minutes for 1 and 0, at intervals of 20 minutes for 1 and 1 and for 1 hour. To do. The display time varies depending on the stored capacity.
(Operation of ground side device)

  FIG. 6 is a flowchart showing the operation of the ground side apparatus.

  In the figure which shows the flow of one Example of this invention, S shows a step.

  When the receiving apparatus is powered on and starts receiving, in S1, the address generated in the receiving apparatus is compared with the transmitted receiving apparatus address, and as a result, it is determined whether or not the address is specified in S3.

  When designated, the playback condition flag is called in S4. If the flag “0” is checked in S5 and is 1, then the display video / audio playback signal being received means an emergency broadcast, and is played back and displayed on the display device 27 in S6.

  When the playback condition flag “0” is 0, the flag “1” is checked in S5. If the flag “1” is 1, the display video / audio playback signal being received means real-time broadcasting. Is reproduced and displayed on the display device 27.

  If the reproduction condition flag “1” is 0, the reproduction condition flags “2” and “3” are checked in S9. If either one or both are 1, the display video / audio stored in the auxiliary storage device 26 is displayed. The reproduction signal is reproduced at a predetermined time interval and displayed on the display device 27.

  In the present embodiment, for example, advertisement information is stored in advance in the auxiliary storage device 26, traffic information is displayed by real-time broadcasting, and advertisements are displayed based on the advertisement information stored in the auxiliary storage device 26 at predetermined time intervals. In the event of an emergency, an emergency information may be displayed in the form of an interruption. However, this is only one form, and the present invention can take various forms using the above technique.

If the video / audio playback signals for display are collected via the Internet and broadcasted after judgment based on ethical regulations, etc. at the broadcasting station, the lead time from information gathering to broadcasting in a wide area or customers Can be shortened.
(Other embodiments)

  The above describes an example in which the address of the receiving device in the ground side device is determined by the address generating unit in the receiving device. However, if the installation position of the receiving device is used as address information, the flexibility and convenience of address setting Improvements can be made.

  7 has a position information detection unit 41 and an interface 411 instead of the address generation unit 28 of the receiving apparatus of FIG. The position information detection unit 41 can use, for example, a GPS (Global Positioning System).

  The receiving apparatus configured as described above uses the position information detecting unit 41 to detect the position information where the receiving apparatus is installed instead of the address generated by the address generating unit 28, and sends it to the microprocessor 25 via the interface 411. The following operations are as described above.

  A specific application example will be described with reference to FIG. Here, it is assumed that the ground side device is mounted in the automobile.

  When a car displaying display A (for example, information about mountains) at 61 point A moves to point B at 62, it can be automatically changed to display B (for example, information about rivers).

  FIG. 9 is a block diagram showing a configuration of another embodiment of the ground side device 3 shown in FIG. The ground side device 3 includes a receiving device and a display device. As in the embodiment of FIG. 3, these may be integrated or may of course be separated. Further, as shown in FIG. 4, the ground side device 3 can be exemplified by a road display board 4 arranged on a highway as a representative example, but may be a road display board of a general road. Of course, a terminal device installed in a car or a terminal device brought into the car may be used. In this case, for example, a display unit in a car navigation system can be shared as a display device. These are the same as in the embodiment of FIG.

  In FIG. 9, 21 is a demodulation unit, 22 is a demultiplexing unit, 23 is a video / audio reproduction processing unit, 24 is a receiving device address processing unit, 25 is a microprocessor, 26 is an auxiliary storage device, 27 is a display device, and 28 is Address generating unit of receiving apparatus, 211 is a received display video / audio signal and multiplexed signal of receiving apparatus address signal, 212, 213, 214, 215, 216, 217, 218 are interfaces, 219 is a video / audio reproduction signal Indicates the output. These are the same as those in the embodiment of FIG. 3, and a CAS (Conditional Access System) control unit 300 is added to this embodiment as another configuration. The CAS system is a configuration for performing viewing restriction based on a contract necessary for configuring a pay broadcast system. In this embodiment, an example in which the infrastructure of the pay broadcast system is utilized for a display system is shown.

  When a display video / audio signal and a receiving device address signal 211 received from an antenna (not shown) arrive, the demodulator 21 demodulates the digital code and sends it to the demultiplexer 22 via the interface 212. The demultiplexing unit 22 separates the video / audio signal for display and the receiving device address signal, and sends them to the video / audio reproduction processing unit 23 and the receiving device address processing unit 24 via the interface 213. In the subsequent stage of the receiving device address processing unit 24, the above-described CAS control unit 300 that performs authentication for restricting viewing to a contracted viewer of a regular broadcast program is connected. The CAS control unit 300 is also connected to the video / audio reproduction processing unit 23. The CAS control unit 300 controls the reproduction operation of the video / audio reproduction processing unit 23 in accordance with the contents of the viewing contract based on the address signal and the authentication information, and the display device. 27 controls the output of a video / audio signal for display to 27. In this way, the viewing restriction is released in the ground side apparatus.

  The video / audio reproduction processing unit 23 decodes the video / audio signal. The receiving device address processing unit 24 decodes the receiving device address signal and sends the information to the microprocessor 25 via the interface 215.

  The microprocessor 25 reads the address information of the receiving device from the address generation unit 28 via the interface 217 and compares it with the receiving device address sent via the interface 215 to determine whether they match.

  If they match, the playback condition sent via the interface 215 is discriminated. In the case of emergency broadcast or real-time broadcast, the video / audio playback signal being received is displayed on the video / audio playback processing unit 23 via the interface 215. Give a command to play and display. The video / audio reproduction processing unit 23 reproduces this and displays it on the display device 27 via the interface 219.

  When the reproduction condition is repetitive broadcasting, the display video / audio reproduction signal before decoding and the receiving device address signal are temporarily stored in the auxiliary storage device 26 via the interfaces 214 and 216, respectively, and are called and reproduced according to the reproduction condition.

  The address generator 28 generates an address using a switch or a read only memory (ROM). As another method, the address generator can have a rewritable memory (flash memory, etc.), and the address can be downloaded by the engineering service function used in digital broadcasting and used as the address of the receiving device. It is. If comprised in this way, the address of a receiver can be set dynamically from a broadcasting apparatus.

  In the case of viewing a general broadcast program, the CAS control unit 300 controls the reproduction operation of the video / audio reproduction processing unit 23 in accordance with the content of the viewing contract based on the address signal and the authentication information, and the video / audio for display on the display device 27. Control the output of the signal.

  As described above, in this embodiment, when the pay system, particularly the CAS system, is used as the display system, an address signal, which is one of information necessary for releasing the viewing restrictions on the pay program, is displayed on the display device 27 in an advertisement or emergency situation. It can also be used to determine the playback condition when making a notification.

In general, the use band of radio waves allocated to a broadcasting system is not unlimited, but is limited for each broadcasting license. In other words, information that can be transmitted per unit time is limited.
When sharing a system, naturally, signals belonging to the category of control signals such as address signals are naturally independent in accordance with each system, but the data becomes redundant accordingly. In this system, there is an advantage that redundancy of data on the transmission side is eliminated by the amount of the address signal, and there is also an advantage that it contributes to a reduction in the scale of the control program of the ground side device which is the reception side. .
(Effect of embodiment)
(1) By combining the characteristics of broadcast satellites with the ability to specify the address of the receiving device all over the country or all service areas simultaneously, real-time broadcasting, and the addressing function of the receiving device, it is possible to change all operating devices from a minimum to a maximum. An extremely flexible display system that can display information necessary for the receiving apparatus anytime and anywhere can be realized. In particular, when an address and personal information are linked on a database, for example, as in a system using CAS, it is possible to accurately provide information such as advertisements according to personal information preferences. It is. Specifically, this can be realized by filtering a large number of addresses according to personal information preferences.
(2) Since the address of the receiving device can be dynamically changed from the transmitting device, the same content can be displayed finely, for example, for each region or for each expressway. In addition, emergency broadcasting or the like can be preferentially displayed by providing the receiving device with a function of determining display priority.
(3) By providing the receiving device with an auxiliary storage device, the same contents can be repeatedly displayed at various time intervals. Furthermore, by incorporating a location information detection function into the receiving device and using the detected position as the address of the receiving device, it is very easy to display by region and location and can be used for advertising, guidance, and reporting. Display system can be realized.

It is the figure which showed schematically the structure of the system which concerns on one Embodiment of this invention. It is a block diagram which shows the structure of a broadcast side apparatus. It is a block diagram which shows the structure of the ground side apparatus shown in FIG. It is a figure which shows the specific example of installation of a ground side apparatus. It is a figure which shows an example of the part concerning this invention of receiving device address information. It is a flowchart which shows operation | movement of a ground side apparatus. It is a block diagram which shows the structure of the ground side apparatus which concerns on other embodiment. It is a figure which shows the operation | movement in the system shown in FIG. It is a block diagram which shows the structure of the ground side apparatus which concerns on other embodiment.

Explanation of symbols

11 Video / Audio Signal Encoding Processing Unit 12 Receiving Device Address Generation Unit 13 Multiplexing Processing Unit 14 Modulation Unit 111 Analog Display Video / Audio Signals 112, 113, 114 Interface 115 Transmission Signal 21 Demodulation Unit 22 Demultiplexing Unit 23 video / audio reproduction processing unit 24 reception device address processing unit 25 microprocessor 26 auxiliary storage device 27 display device 28 reception device address generation unit 211 multiplexed signal 212 of the received display video / audio signal and reception device address signal, 213, 214, 215, 216, 217, 218 Interface 219 Video / audio playback signal output 31 Basic format 32 Playback condition flag 41 Position information detector 411 Interface

Claims (34)

Broadcasting first information necessary for display on an information display board for an unspecified number of people via a broadcasting satellite,
The display method, wherein the first information is displayed on a display device via a receiving device that receives the broadcast. The display method according to claim 1,
The display method, wherein the display device is a road display board disposed on a road. The display method according to claim 1,
The display method, wherein the receiving device is a terminal device that is mounted on or may be brought into an automobile. The display method according to claim 1,
The display device includes an authentication control system for restricting broadcast viewing, and the display device can receive control information for releasing the broadcast viewing restriction, and for determining whether or not display reproduction on the display board is possible. A display method using a part of the control information. The display method according to any one of claims 1 to 4, wherein:
Broadcasting second information regarding advertisement via the broadcasting satellite;
The display method, wherein the second information is intermittently displayed on the display device. The display method according to any one of claims 1 to 5, wherein:
Broadcasting third information for specifying a display area via the broadcasting satellite;
When the position of the display device specified by the position detection function for detecting the position of the display device is within the display area specified by the third information, the first information or the second information is displayed on the display device. A display method characterized by displaying information. A display method according to any one of claims 1 to 6,
Broadcasting fourth information serving as a unique identifier of the receiving device via the broadcasting satellite,
The display method, wherein the receiving device displays the first information or the second information on the display device when the fourth information matches. Broadcast the first information necessary to display advertisements via the broadcasting satellite,
The display method, wherein the first information is displayed on a display device via a receiving device that receives the broadcast. The display method according to claim 8,
The display method, wherein the display device is an advertising board or an advertising tower. The display method according to claim 8 or 9, wherein
Broadcasting second information specifying a display area via the broadcasting satellite,
Displaying the first information on the display device when a position of the display device specified by a position detection function for detecting a position of the display device is within a display area specified by the second information. Characteristic display method. The display method according to any one of claims 8 to 10, wherein
Broadcasting third information serving as a unique identifier of the receiving device via the broadcasting satellite,
The display method, wherein the receiving device displays the first information on the display device when the third information matches. A broadcasting satellite capable of broadcasting the first information necessary for display of an information display board for an unspecified number of people;
A display system comprising: a receiving device that receives the broadcast; and a ground-side device that includes a display device that displays the received first information. The display system according to claim 12, wherein
The display system, wherein the display device is a road display board arranged on a road. The display system according to claim 12, wherein
The display system, wherein the receiving device is a terminal device that is mounted on or may be brought into an automobile. The display system according to claim 12, wherein
The display device includes an authentication control system for restricting broadcast viewing, and the display device can receive control information for releasing the broadcast viewing restriction, and for determining whether or not display reproduction on the display board is possible. A display system using a part of the control information. The display system according to any one of claims 12 to 15,
The broadcasting satellite has means for broadcasting second information relating to the advertisement;
The display device includes means for intermittently displaying the second information. The display system according to any one of claims 12 to 16, comprising:
The broadcasting satellite has means for broadcasting third information for specifying a display area,
The ground side device includes a position detection unit for detecting a position of the display device, and the display when the position of the display device detected by the position detection unit is within a display area specified by the third information. A display system comprising means for displaying the first information or the second information on a device. The display system according to any one of claims 12 to 17,
The broadcasting satellite has means for broadcasting fourth information which is a unique identifier of the receiving device,
The ground side device displays the first information or the second information when the means for holding or generating the identifier matches the identifier which is the fourth information identifier. A display system comprising: means for displaying on the means. A broadcasting satellite capable of broadcasting the first information necessary for displaying the advertisement;
A display system comprising: a receiving device that receives the broadcast; and a ground-side device that includes a display device that displays the received first information. A display system according to claim 17,
The display system, wherein the display device is an advertising board or an advertising tower. A display system according to claim 19 or claim 20, wherein
The broadcasting satellite has means for broadcasting second information for specifying a display area,
The ground side device includes a position detection unit for detecting a position of the display device, and the display when the position of the display device detected by the position detection unit is within a display area specified by the second information. A display system comprising means for displaying the first information on a device. The display system according to any one of claims 19 to 21,
The broadcasting satellite has means for broadcasting third information which is a unique identifier of the receiving device,
The ground side device has means for holding or generating the identifier, and means for displaying the first information on the display means when the identifier matches the identifier which is the third information. A display system characterized by comprising: A receiving device capable of receiving a broadcast including the first information necessary for display on the road display board;
A ground side device, comprising: a display device that displays the received first information. The ground side device according to claim 23,
The ground side device, wherein the display device is a road display board arranged on a road. The ground side device according to claim 23,
The ground-side device, wherein the receiving device is a terminal device that may be mounted on or brought into an automobile. The ground side device according to claim 23,
The display device includes an authentication control system for restricting broadcast viewing, and the display device can receive control information for releasing the broadcast viewing restriction, and for determining whether or not display reproduction on the display board is possible. A ground side device using a part of the control information. The ground-side device according to any one of claims 23 to 26,
A ground side device, characterized by comprising means for intermittently displaying second information relating to an advertisement broadcast from the broadcasting satellite on the display device. A ground side device according to claim 27,
A terrestrial apparatus comprising means for temporarily storing second information relating to an advertisement broadcast from the broadcasting satellite. The ground-side device according to any one of claims 23 to 28, wherein:
Position detecting means for detecting the position of the display device;
When the position of the display device detected by the position detection means is within the display area specified by the third information specifying the display area broadcast from the broadcasting satellite, the first information or It has a means to display said 2nd information. The ground side apparatus characterized by the above-mentioned. A ground side device according to any one of claims 23 to 29,
Means for holding or generating a unique identifier of the receiving device;
Means for displaying the first information or the second information on the display means when the identifier and the identifier which is the fourth information serving as the identifier broadcast from the broadcasting satellite are compared and matched. A ground side device characterized by comprising: A receiving device capable of receiving a broadcast including first information necessary for displaying an advertisement;
A ground side device, comprising: a display device that displays the received first information. A ground side device according to claim 31,
The ground side device, wherein the display device is an advertising board or an advertising tower. A ground side device according to claim 31 or claim 32,
Position detecting means for detecting the position of the display device;
When the position of the display device detected by the position detection means is within the display area specified by the second information specifying the display area broadcast from the broadcasting satellite, the first information is sent to the display device. It has a means to display, The ground side apparatus characterized by the above-mentioned. The ground-side device according to any one of claims 31 to 33,
Means for holding or generating a unique identifier of the receiving device;
And a means for displaying the first information on the display means when the identifier matches the identifier which is the third information which is the identifier broadcast from the broadcasting satellite. Ground side equipment.

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