JP2017010392A - Information distribution system and information distribution method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information distribution system and an information distribution method capable of acquiring ship information on a small ship with no dedicated device such as AIS being equipped.SOLUTION: An information distribution system includes a mobile terminal which is present in a ship to acquire position information representing a current self-position and outputs the acquired position information, an information distribution device which acquires the position information from the mobile terminal and selects the position information of the mobile terminal which is in a predetermined region, and a display device which displays the position information of the mobile terminal, selected by the information distribution device, on a chart display in an overlapped manner.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an information distribution system and an information distribution method for distributing information about a ship under voyage obtained from a portable terminal to a customer via a network.

In order to prevent the collision of ships, it is important that a ship navigating the sea knows information of other surrounding ships. In particular, it is important to know the ship's ship information such as the ship's position information and information relating to the movement of the ship such as the moving speed and direction of travel.
In recent years, a system called AIS (Automatic Identification System) using VHF (Very High Frequency) band wireless communication and a system for exchanging ship information between ships and between the ship and the land is also used. (Patent Document 1).

JP 2000-195000 A

  However, although AIS is obliged to be installed on vessels of 500 tons or more that do not engage in international voyages, and all passenger ships and vessels of 300 tons or more that engage in international voyages, it is obliged to install them on other small vessels. It is not done. Moreover, since AIS is very expensive, the spread to small vessels is delayed, and the small vessels do not necessarily grasp the ship information of the large vessels. On the other hand, large ships can know ship information of other large ships by AIS, but cannot know ship information of small ships through AIS. Therefore, even if an AIS is mounted on a large vessel, if the AIS is not mounted on a small vessel, the ship information cannot be obtained from each other. In some cases, it is difficult to avoid collisions and to avoid collisions. In order to solve the above problem, a large-scale ship is equipped with a ship radar device, and radio waves are radiated from the ship radar device. The ship radar device measures the position of the small ship from the ship by detecting the reflected wave of the radio wave radiated by the ship from the target (small ship). However, not only the reflected wave (desired wave) from the target but also the reflected wave (clutter) from the sea surface, the ground, rain and snow, etc., and the transmitted wave (interference wave) from other radar, etc. Unnecessary waves are mixed. Therefore, there is a case where the marine radar device misidentifies the unnecessary wave as a reflected wave of the radio wave radiated by the marine vessel, and there is a demand for a mechanism that can be distinguished from a small vessel.

  The present invention has been made in view of such circumstances, and an object thereof is to make it possible to obtain ship information of a small ship without providing a dedicated device such as an AIS, and to obtain a ship of a small ship that has been obtained. It is to provide an information distribution system and an information distribution method for distributing information to a large ship.

  One aspect of the present invention is in a ship, acquires position information indicating its current position, outputs the acquired position information, acquires the position information from the mobile terminal, and obtains a predetermined area. An information distribution system comprising: an information distribution device that selects the position information of the portable terminal located within; and an information display device that displays the position information of the portable terminal selected by the information distribution device on a chart display. is there.

  In other words, even if the ship does not have a dedicated device such as AIS that transmits its own voyage information, if it has a portable terminal that can acquire and transmit the current position information, the position information of the ship can be obtained. It is possible to construct a system that can transmit, select a ship in a predetermined area based on the position information, and distribute it as information that can be displayed on an information display device of another ship.

  One embodiment of the present invention is the above-described information distribution system, wherein the information display device displays a preset symbol at a position corresponding to the position information of the mobile terminal selected by the information distribution device. To do.

  That is, the symbol indicating the position is changed according to the position of the ship carrying the mobile terminal that has transmitted the position information. This makes it easier for a large ship to visually recognize the positional relationship between the ship and the non-AIS ship (small ship).

  One embodiment of the present invention is the above-described information distribution system, wherein the information display device is provided in a ship equipped with an AIS (automatic ship identification device), and the information distribution device is connected to the portable terminal. The position information is received, and the predetermined area is within a predetermined distance centered on the position information of the mobile terminal received by the information distribution device and the position information of the ship on which the AIS is mounted. It is an area.

  That is, in a ship equipped with an AIS, information on an AIS non-mounted ship (small ship) around the ship based on the AIS display format can be displayed on the information display device.

  One embodiment of the present invention is the above-described information distribution system, wherein the information distribution device predicts a future position of the ship having the portable terminal based on the position information of the portable terminal, and performs prediction. The future position of the ship is delivered to the information display device.

  In other words, a ship equipped with AIS can grasp in advance and avoid that an AIS non-equipped ship (small ship) approaches the ship. Can do.

  Further, according to one aspect of the present invention, a portable terminal in a ship acquires position information indicating the current position of the ship, and outputs the acquired position information. Acquiring position information, selecting the position information of the mobile terminal in a predetermined area, and displaying the position information of the mobile terminal selected by the information distribution device on a chart display. This is an information distribution method.

  In other words, even if the ship does not have a dedicated device such as AIS that transmits its own voyage information, if it has a portable terminal that can acquire and transmit the current position information, the position information of the ship can be obtained. It is possible to realize a method of transmitting information, selecting a ship in a predetermined area based on the position information, and distributing it as information that can be displayed on an information display device of another ship.

  According to the present invention, it is possible to acquire ship information of a small ship without providing a dedicated device such as an AIS, and further, an information distribution system and an information distribution method for distributing the acquired ship information of a small ship to a large ship. Can be provided.

  ADVANTAGE OF THE INVENTION According to this invention, ship information, such as a small ship which is not equipped with dedicated apparatuses, such as AIS, can be collected now through a portable terminal, and the service which distributes the information regarding these ships to a specific ship can be provided. The ship that has received the distribution can grasp the navigational situation of a small ship or the like that is not equipped with a dedicated device such as AIS around the ship, and can select an optimum route in addition to avoiding a collision.

It is a figure showing an example of composition of information distribution system 1 in an embodiment of the present invention. It is a figure which shows an example of schematic structure of the information display apparatus 5 in embodiment of this invention. It is a figure which shows the example of a display of the display part 52 in embodiment of this invention. It is a figure which shows the flowchart of the information delivery apparatus 2 in embodiment of this invention. It is a figure which shows the flowchart of the image display process in the information display apparatus 5 in embodiment of this invention.

The information distribution system of this embodiment includes a mobile terminal, an information distribution device, and an information display device. The portable terminal is in a small ship. Therefore, the position information of the small boat is the position information of the mobile terminal. The portable terminal transmits position information indicating the current position to the information distribution apparatus. The information distribution device transmits the position information of the portable terminal within a predetermined area to the information display device from the position information transmitted from the portable terminal. The information display device superimposes and displays the position information of the portable terminal transmitted from the information distribution device on the chart display.
Hereinafter, the details of the information distribution system 1 of the present embodiment will be described.

FIG. 1 is a diagram illustrating a configuration example of an information distribution system 1 according to an embodiment of the present invention.
As shown in FIG. 1, an information distribution system 1 according to an embodiment of the present invention includes an information distribution device 2, an AIS (Automatic Identification System) 4 mounted on a large vessel 3, an information display device 5, and a small size. A portable terminal 7 mounted on the ship 6 is provided. In the present embodiment, the case where there is one large ship 3 and one small ship 6 will be described, but it is not limited to this number. In the present embodiment, the large ship 3 is a ship on which the AIS 4 is mounted, and the small ship 6 is a ship on which the AIS 4 is not mounted.

The information distribution device 2 and the AIS 4 mounted on the large ship 3 are connected via the network 10. Further, the information distribution device 2 and the portable terminal 7 mounted on the small vessel 6 are connected via the network 10. In the present embodiment, the network 10 is a network including wireless communication (VHF band or the like) and IP communication.
The AIS 4 adds the large ship ID as identification information of the ship on which the ship is mounted to the navigation information such as the position information, the traveling direction, and the moving speed of the large ship 3 on which the AIS 4 is mounted. To the first receiver 20 or the AIS information transmission / reception converter 11 at regular intervals. The AIS 4 acquires voyage information of each large ship 3 from the AIS 4 mounted on the other large ship 3 via the network 10.

  The information display device 5 acquires ship information (described later) from the information distribution device 2 via the network 10. The information display device 5 displays the acquired ship information on the display unit 52 provided in the own device. For example, the information display device 5 displays the position information of the large vessel and the position information of the small vessel including the location information of the vessel on which the device is mounted on the display unit 52.

  The AIS information transmission / reception conversion unit 11 receives the voyage information transmitted from the AIS 4 via the network 10. The AIS information transmission / reception conversion unit 11 converts the received navigation information into data capable of IP communication, and transmits the converted navigation information to the information distribution device 2 via the network 10 by IP communication.

  The portable terminal 7 is an information terminal having a GPS (Global Positioning System) function and a communication function, such as a smartphone or a tablet terminal. An occupant of the small vessel 6 mounts or brings a portable terminal 7 such as a smartphone or a tablet terminal into the small vessel 6 and activates a predetermined application. When a predetermined application is activated, the mobile terminal 7 acquires the position information of the current position at a constant cycle using the GPS function. Then, the mobile terminal 7 adds a small ship ID to the acquired position information and transmits it to the information distribution device 2 via the network 10. For example, the small vessel ID is a unique number assigned for each predetermined application, for example, a serial number of the predetermined application. Here, the position information of the portable terminal 7 is the position information of the small vessel 6. Thereby, the information delivery system 1 can acquire the positional information on the small vessel 6 easily. Therefore, when acquiring the position information of the small vessel 6, it is not necessary to provide the small vessel 6 with a dedicated device such as AIS.

The information distribution device 2 includes a first reception unit 20, a second reception unit 21, a storage unit 22, an information selection unit 23, and a transmission unit 24.
The first receiving unit 20 is connected to the information selecting unit 23. The first receiver 20 receives the navigation information of the large vessel 3 from the AIS information transmission / reception converter 11 via the network 10. The first receiving unit 20 may directly receive the voyage information transmitted from the AIS 4 without using the AIS information transmission / reception conversion unit 11.

  The second receiving unit 21 is connected to the information selecting unit 23. The second receiving unit 21 receives the position information of the small vessel 6 transmitted from the mobile terminal 7 via the network 10.

  The information selection unit 23 is connected to the first reception unit 20, the second reception unit 21, the storage unit 22, and the transmission unit 24. The information selection unit 23 stores the navigation information received by the first reception unit 20 in the storage unit 22 for each large ship ID. The information selection unit 23 stores the position information of the small vessel 6 received by the second reception unit 21 in the storage unit 22 for each small vessel ID. In the present embodiment, the large vessel ID and the small vessel ID may be collectively referred to as a vessel ID. The information selection unit 23 may obtain the traveling direction and moving speed of the ship for each ship ID. In addition, the information selection unit 23 may store the position information of the small vessel 6 received by the second reception unit 21 and the time of the received position information of the small vessel 6 in the storage unit 22 for each small vessel ID.

  The information selection unit 23 selects the small boat ID of the small boat 6 in the predetermined area from the storage unit 22. For example, a ship that sails (or anchors) in Tokyo Bay is unlikely to collide with a ship that sails (or anchors) in Osaka Bay in a few hours. There is no need to acquire the location information of the ship. For example, the predetermined area may be arbitrarily set by the user, or may be set within a preset distance around the position indicated by the position information of the own ship (large ship 3).

  The information selection part 23 acquires the positional information memorize | stored for every determined small ship ID from the memory | storage part 22 as ship information. The information selection unit 23 adds the small vessel ID corresponding to the ship information to the ship information of the small vessel 6 acquired from the storage unit 22 and transmits the information to the transmission unit 24. Ship information may include speed information and direction information in addition to position information.

  The transmission unit 24 distributes the ship information of the small boat 6 acquired by the information selection unit 23 to the information display device 5 via the network 10.

FIG. 2 is a diagram illustrating an example of a schematic configuration of the information display device 5 in the present embodiment.
The information display device 5 includes a communication unit 50, a storage unit 51, a display unit 52, and an image display control unit 53.

  The communication unit 50 is connected to the image display control unit 53. The communication unit 50 communicates with the information distribution device 2 via the network 10. When the communication unit 50 acquires ship information of the small boat 6 from the transmission unit 24 via the network 10, the communication unit 50 outputs the acquired ship information to the image display control unit 53.

The storage unit 51 is connected to the image display control unit 53. The storage unit 51 includes a ROM, a RAM, a flash memory, a hard disk device, and the like, and stores an application program executed by the image display control unit 53, data, and the like. As an application program, a ship display application program that displays a ship around the ship as an information image based on ship information from the communication unit 50, and a chart display application program that displays a chart around the ship as an information image. And are included.
The display unit 52 is connected to the image display control unit 53. The display unit 52 includes a liquid crystal display device and the like, and displays an arbitrary image. For example, the display unit 52 is an electronic chart display and information system (ECDIS).

  The image display control unit 53 executes an application program stored in the storage unit 51. The image display control unit 53 periodically acquires position information indicating the current position of the ship and voyage information of the other large vessel 3 from the AIS 4. Note that the image display control unit 53 may periodically acquire position information indicating the current position of the ship from a GPS (not shown) provided on the ship.

  The image display control unit 53 activates the ship display application program and the chart display application program, and displays the information on the ship and the ships around the ship on the display unit 52 on the chart around the ship. For example, the image display control unit 53 receives ship information of the small ship 6 from the information distribution device 2 via the communication unit 50. The image display control unit 53 receives the position information of the own ship and the voyage information of the large ship 3 of the other ship from the AIS 4. The image display control unit 53 forms the symbols of the own ship and nearby ships based on the received ship information of the small ship 6, the navigation information of the large ship 3, and the position information of the own ship. The image display control unit 53 superimposes the formed symbol on a chart around the ship and displays the superimposed information on the display unit 52 as an information image. The image display control unit 53 may generate a warning notification zone (guard zone) X of the ship. The image display control unit 53 determines whether or not another ship has entered the generated alarm notification zone (that is, determines whether or not the above-described predetermined condition is satisfied). An alarm is output to 52.

Next, a display screen displayed on the display unit 52 by the image display control unit 53 will be described. FIG. 3 is a diagram illustrating a display example of the display unit 52 in the present embodiment.
As shown in FIG. 3, the symbol indicated by P indicates the position of the ship. A symbol Q indicates an AIS-equipped ship that is a large ship 3 of another ship. The symbol indicated by R indicates a non-AIS-equipped ship that is a small vessel 6 such as a fishing boat or a leisure vessel. A symbol indicated by X indicates an alarm notification zone. Note that an arrow may be drawn from the symbol of the ship, the arrow vector may indicate the traveling direction of the ship, and the length of the arrow may be displayed on the display unit 52 so as to indicate the speed of the ship.

Next, operation | movement of the information delivery apparatus 2 is demonstrated using FIG. FIG. 4 is a diagram showing a flowchart of the information distribution apparatus 2 in the present embodiment.
In step S <b> 101, the first receiving unit 20 receives the voyage information to which the large vessel ID is added from the AIS 4 via the network 10.
In step S <b> 102, the second receiving unit 21 receives position information to which the small boat ID is added from the mobile terminal 7 mounted on the small boat 6 via the network 10.

  In step S103, the information selection unit 23 stores the navigation information of the large vessel 3 received by the first reception unit 20 and the position information of the small vessel 6 received by the second reception unit 21 in the storage unit 22 for each vessel ID. To do.

  In step S104, the information selection unit 23 selects the small vessel ID of the small vessel 6 in the predetermined area. For example, when the position of the small vessel 6 is equal to or less than a predetermined threshold with the position indicated by the position information of the large vessel 3 acquired from the first receiving unit 20 as a reference, the information selecting unit 23 It is determined that the position is within a predetermined area. The information selection unit 23 selects the small vessel ID of the small vessel 6 that is determined to be within the predetermined area. On the other hand, when the position of the small vessel 6 exceeds a predetermined threshold with reference to the position indicated by the position information of the large vessel 3 acquired from the first receiving unit 20, the information selection unit 23 positions the small vessel 6. Is determined to be outside the predetermined area. Therefore, the information selection unit 23 does not select the small vessel ID of the small vessel 6 that is determined to be outside the predetermined region.

In step S <b> 105, the information selection unit 23 generates ship information for each selected small ship ID, and outputs the generated ship information to the transmission unit 24.
In step S <b> 106, the transmission unit 24 transmits ship information to the information display device 5 via the network 10.

  Below, the image display process in the information display apparatus 5 mounted in the large sized ship 3 is demonstrated using FIG. FIG. 5 is a diagram illustrating a flowchart of image display processing in the information display device 5 according to the present embodiment. This image display process is to display the positional relationship between the own ship and the nearby ship on the display unit 52, and is repeatedly performed by the image display control unit 53. The information display device 5 activates an application program in accordance with an operation performed by the occupant, and performs the following image display processing based on a procedure incorporated in the application program.

In step S201, the image display control unit 53 receives the position information of the own ship from the AIS 4 of the own ship.
In step S202, the image display control unit 53 receives the voyage information of the large ship 3 of the other ship from the AIS 4 of the own ship.

  In step S <b> 203, the image display control unit 53 receives ship information of the small ship 6 from the information distribution device 2 via the communication unit 50.

  In step S <b> 204, the image display control unit 53 forms the symbols of the own ship and nearby ships based on the ship information of the small ship 6, the position information of the own ship, and the voyage information of the large ship 3 of the other ship.

  In step S <b> 205, the image display control unit 53 displays an image in which the formed symbol is superimposed on the chart display around the ship on the display unit 52.

  As described above, the information distribution system 1 of this embodiment includes the mobile terminal 7, the information distribution device 2, and the information display device 5. The portable terminal 7 transmits position information indicating the current position to the information distribution device 2. The information distribution device 2 stores the position information received from the mobile terminal 7 in the storage unit 22 of the information distribution device 2 at regular intervals. And the information delivery system 1 reads the positional information on the portable terminal 7 in a predetermined area | region from the memory | storage part 22, and the information display apparatus mounted in the ship by which the position information of the read portable terminal 7 was mounted in AIS. Send to 5. The information display device 5 superimposes and displays the position information of the portable terminal 7 transmitted from the information distribution device 2 on the chart display. An occupant of a small vessel 6 can easily install a portable terminal 7 such as a smartphone or a tablet terminal in the small vessel 6 and start a predetermined application without providing a dedicated device such as AIS in the small vessel 6. The position information of the small vessel 6 can be transmitted to the information distribution device 2. As a result, the position information of a ship (for example, small ship 6) on which AIS 4 is not mounted can be displayed on information display device 5 such as ECDIS mounted on a ship (for example, large ship 3) on which AIS is mounted. it can. As a result, the large vessel 3 can grasp the position of the small vessel 6 even in an environment where it is difficult to ensure visibility, such as when fog is generated or after sunset, so that it is possible to prevent a collision with the small vessel 6. Can operate safely.

  Moreover, in the above-mentioned embodiment, although the information selection part 23 determined small ship ID of the small ship 6 in a predetermined area | region, it is not limited to this. For example, the information selection unit 23 may determine the small vessel ID of the small vessel 6 and the large vessel ID of the large vessel 3 outside the predetermined area. In that case, the information selection part 23 outputs the position information memorize | stored for every determined small ship ID and large ship ID to the information display apparatus 5 as ship information. Thereby, even when the AIS 4 does not acquire the navigation information of each large vessel 3 from the AIS 4 mounted on the other large vessel 3, the position information of the other large vessel 3 can be displayed on the information display device 5 such as ECDIS. it can.

  Moreover, in the above-mentioned embodiment, although the information delivery apparatus 2 transmitted the present position information memorize | stored for every determined small ship ID to the information display apparatus 5 as ship information, it is not limited to this. For example, the information distribution apparatus 2 may transmit the position information of the small ship from a predetermined time to the present as ship information to the information display apparatus 5 among the position information stored for each determined small ship ID. Good. Thereby, even when the position information of the small vessel 6 cannot be transmitted to the information distribution device 2 due to the battery of the portable terminal 7 mounted on the small vessel 6 running out, The position information of the small boat 6 is transmitted, and the past position information of the small boat 6 can be displayed on the display unit 52 such as ECDIS mounted on the large boat 3. As a result, the past position information of the small vessel 6 for which position information can no longer be transmitted to the information distribution device 2 can be confirmed on the display unit 52 such as ECDIS, thereby preventing further collision with the small vessel. be able to. At this time, the image display control unit 53 may display the symbols of the small boat 6 displayed on the display unit 52 by color-coding for each time. For example, the image display control unit 53 uses red for the position information symbol of the small vessel 6 for the last hour, yellow for the position information symbol of the small vessel 6 for 24 hours, and the symbol for the position information of the small vessel 6 for one week. The symbol of the position information of the small vessel 6 in green and other time zones is gray.

  In the above-described embodiment, the information distribution device 2 predicts the future position of the small vessel 6 having the portable terminal 7 based on the position information of the portable terminal 7, and informs the predicted future position of the small vessel 6. You may distribute to the display apparatus 5. FIG. For example, the information distribution device 2 stores the position information of the mobile terminal 7 from the present to a predetermined period in the past in the storage unit 22. The information distribution device 2 calculates the moving speed and traveling direction of the small vessel 6 from the position information of the portable terminal 7 from the present to the predetermined period in the past stored in the storage unit 22. The information distribution device 2 predicts the future position of the small vessel 6 by obtaining the position of the small vessel 6 after a predetermined time based on the calculated moving speed and traveling direction of the small vessel 6. Further, the information distribution device 2 determines the tendency of the position of the small vessel 6 with respect to the sea in a predetermined time zone (the presence of the small vessel exists in the predetermined time zone) from the position information of the mobile terminal 7 from the present to the past predetermined period. The position of the small vessel 6 that is highly likely to be determined) may be determined, and the future position of the small vessel 6 may be predicted based on the determined tendency of the position of the small vessel 6. As a result, a ship equipped with AIS4 can grasp in advance and avoid that a non-AIS-equipped ship (small ship 6) approaches the ship. Can be prevented.

  Moreover, in the above-mentioned embodiment, the image display control part 53 displays on the display part 52 so that the symbol of the position information of the small ship 6 which has stopped and the position information of the moving small ship 6 may be distinguished with a color. You may let them. The distinction between the small boat 6 that is stopped and the small boat 6 that is moving may be determined from, for example, information on a gyro sensor mounted on the portable terminal 7 or a rate of change in the position of the small boat 6 per unit time. .

  Moreover, in the above-mentioned embodiment, the information distribution apparatus 2 displays information on a region where the traffic volume of the small boat 6 is high and its time zone from the past position information of the small boat 6 stored in the storage unit 22. You may transmit to the apparatus 5. In that case, when the image display control unit 53 of the information display device 5 obtains information on the area where the small ship 6 has a high traffic volume and its time zone, the area where the traffic volume of the small ship 6 is high is designated as a dangerous area and its time zone. Is displayed on the display unit 52 as a danger time zone.

  In the above-described embodiment, the image display control unit 53 can determine an alarm notification zone, and can output an alarm to the display unit 52 when another small vessel 6 enters the alarm notification zone. Thereby, since the large sized ship 3 can grasp | ascertain and avoid approaching the small sized ship 6 in advance, it can prevent the contact accident with a large sized ship beforehand.

  In the above-described embodiment, the image display control unit 53 enlarges or reduces the forward distance of the alarm notification zone according to the moving speed of the ship. For example, as the moving speed of the ship increases, the image display control unit 53 increases the distance ahead of the alarm notification zone. In other words, it is not a circle but an ellipse spreading forward. Thereby, when the small vessel 6 enters the alarm notification zone, the small vessel 6 reaches the position of the own vessel after outputting an alarm on the display unit 52 of the information display device 5 regardless of the moving speed of the own vessel. The time to do can be kept constant. Therefore, the crew of the own ship can ensure the time required for the own ship to avoid a collision with the small vessel 6 regardless of the moving speed of the own ship without depending on the moving speed.

  In the above-described embodiment, the information distribution apparatus 2 transmits the generated ship information only to the information display apparatus 5 via the network 10. However, the present invention is not limited to this, and the generated ship information is transmitted via the network 10. You may transmit to the portable terminal 7. FIG. In addition, the information distribution device 2 may transmit voyage information including the position information of the large vessel 3 stored in the storage unit 22 to the portable terminal 7. Thereby, the portable terminal 7 can display the position information of the other small boat 6 and the position information of the large boat 3 on its own display screen. Therefore, an occupant of the small vessel 6 can grasp the positions of the large vessel 3 and other small vessels 6 by checking the display screen of the mobile terminal 7.

  In the above-described embodiment, the image display control unit 53 determines whether another ship has entered the alarm notification zone. However, the present embodiment is not limited to this. For example, the information distribution device 2 may determine whether another ship has entered the alarm notification zone.

  In the above-described embodiment, the image display control unit 53 displays unique information such as the ship type, ship name, course, and cargo of the small vessel 6 on the display unit 52 in addition to the position information of the small vessel 6. Also good.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and modifications, and various modifications, corrections, substitutions, and additions are possible without departing from the spirit of the present invention. Etc. are possible.

  You may make it implement | achieve the information delivery apparatus 2 or the information display apparatus 5 in embodiment mentioned above with a computer. In that case, a program for realizing this function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read into a computer system and executed. Here, the “computer system” includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory inside a computer system serving as a server or a client in that case may be included and a program held for a certain period of time. Further, the program may be a program for realizing a part of the above-described functions, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system. You may implement | achieve using programmable logic devices, such as FPGA (Field Programmable Gate Array).

1 Information Distribution System 2 Information Distribution Device 3 Large Ship 4 AIS
DESCRIPTION OF SYMBOLS 5 Information display apparatus 6 Small ship 7 Portable terminal 10 Network 11 AIS information transmission / reception conversion part 20 1st receiving part 21 2nd receiving part 22, 51 Memory | storage part 23 Information selection part 24 Transmission part 50 Communication part 52 Display part 53 Image display control Part

Claims (5)

A portable terminal that is in a ship, acquires position information indicating its current position, and outputs the acquired position information;
An information distribution device that acquires the position information from the mobile terminal and selects the position information of the mobile terminal in a predetermined area;
An information display device that superimposes and displays the position information of the mobile terminal selected by the information distribution device on a chart display;
An information distribution system comprising:   The information distribution system according to claim 1, wherein the information display device displays a preset symbol at a position corresponding to the position information of the mobile terminal selected by the information distribution device. The information display device is provided in a ship equipped with an AIS (automatic ship identification device),
The information distribution device receives position information of a ship on which the AIS is mounted from the AIS,
The information distribution system according to claim 1, wherein the predetermined area is an area within a predetermined distance centered on position information of a ship on which the AIS is received received by the information distribution apparatus.   The said information delivery apparatus predicts the future position of the said ship which has the said portable terminal based on the said positional information on the said portable terminal, and distributes the predicted future position of the said ship to the said information display apparatus. Information distribution system described in 1. A portable terminal in the ship acquires position information indicating its current position, and outputs the acquired position information;
An information distribution device acquiring the position information from the portable terminal and selecting the position information of the portable terminal within a predetermined area;
Displaying the position information of the portable terminal selected by the information distribution apparatus on a chart display;
An information delivery method comprising: