# US 2025/0093501 A1 · Ship information sharing device, ship information sharing method and ship information sharing system

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- Number: US 2025/0093501 A1
- Document ID: US20250093501A1
- Status: Published application
- Kind: A1
- Application number: 18/965,785
- Filed: 2024-12-02
- Published: 2025-03-20
- Earliest claimed: 2022-06-02
- Applicants: Furuno Electric Co., Ltd.
- Inventors: Jun YAMABAYASHI
- Web page: https://patentgrep.com/patent/US20250093501A1

## CPC

- G01S 13/937: of marine craft
- B63B 49/00: Arrangements of nautical instruments or navigational aids (nautical measuring instruments G01C; radio navigation, analogous arrangements using other waves G01S)
- B63B 79/00: Monitoring properties or operating parameters of vessels in operation
- G01S 7/003: {Transmission of data between radar, sonar or lidar systems and remote stations}
- G08G 3/02: Anti-collision systems
- H04B 7/1851: {Systems using a satellite or space-based relay (H04B7/18508, H04B7/18521 take precedence; providing specific services H04B7/18523 - H04B7/18576)}
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06)
- G08G: TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway traffic B61L; arrangement of road signs or traffic signals E01F9/00; radar or analogous systems, sonar systems, lidar systems specially adapted for traffic control G01S13/91, G01S15/88, G01S17/88; {radar or analogous systems, sonar systems, lidar systems specially adapted for anti-collision purposes G01S13/93, G01S15/93, G01S17/93})
- H04B: TRANSMISSION

## Abstract

A ship information sharing device capable of sharing navigational data of an amount suitable for a channel capacity is provided. The ship information sharing device includes processing circuitry. The processing circuitry serially acquires navigational data according to navigation of a ship, which is detected by a detection apparatus mounted on the ship. The processing circuitry acquires a channel capacity of a channel to a ship information gathering device. The processing circuitry changes, according to the channel capacity, a frequency to include the navigational data into a transmission data set serially transmitted to the ship information gathering device. The processing circuitry transmits the transmission data set to the ship information gathering device.

## Claims

### Claim 1

A ship information sharing device, comprising processing circuitry configured to:
serially acquire navigational data according to navigation of a ship, the navigational data detected by a detection apparatus mounted on the ship;
acquire a channel capacity of a channel to a ship information gathering device;
change, according to the channel capacity, a frequency to include the navigational data into a transmission data set serially transmitted to the ship information gathering device; and
transmit the transmission data set to the ship information gathering device.

### Claim 2 (depends on 1)

The ship information sharing device of claim 1,
wherein the processing circuitry acquires another-ship data indicative of a position of another ship existing around the ship, as the navigational data,
wherein another-ship data of another ship of which a distance from the ship is a threshold or above is not included into the transmission data set, and
wherein the processing circuitry changes the threshold according to the channel capacity.

### Claim 3 (depends on 1)

The ship information sharing device of claim 1,
wherein the processing circuitry acquires another-ship data indicative of a position of another ship existing around the ship, as the navigational data,
wherein the processing circuitry is further configured to calculate a collision risk of the ship with the another ship,
wherein another-ship data of another ship of which the collision risk is a threshold or below is not included into the transmission data set, and
wherein the processing circuitry changes the threshold according to the channel capacity.

### Claim 4 (depends on 2)

The ship information sharing device of claim 2,
wherein the processing circuitry acquires another-ship data indicative of a position of another ship existing around the ship, as the navigational data,
wherein the processing circuitry is further configured to calculate a collision risk of the ship with the another ship,
wherein another-ship data of another ship of which the collision risk is a threshold or below is not included into the transmission data set, and
wherein the processing circuitry changes the threshold according to the channel capacity.

### Claim 5 (depends on 1)

The ship information sharing device of claim 1, wherein the processing circuitry:
acquires the position and a ship speed of the ship as the navigational data; and
changes a frequency to include the position of the ship into the transmission data set according to the ship speed.

### Claim 6 (depends on 2)

The ship information sharing device of claim 2, wherein the processing circuitry:
acquires the position and a ship speed of the ship as the navigational data; and
changes a frequency to include the position of the ship into the transmission data set according to the ship speed.

### Claim 7 (depends on 4)

The ship information sharing device of claim 4, wherein the processing circuitry:
acquires the position and a ship speed of the ship as the navigational data; and
changes a frequency to include the position of the ship into the transmission data set according to the ship speed.

### Claim 8 (depends on 1)

The ship information sharing device of claim 1, wherein the processing circuitry:
acquires another-ship data indicative of a position of another ship existing around the ship as the navigational data; and
with respect to a frequency to include another-ship data of another ship within an observing area into the transmission data set, reduces a frequency to include the another-ship data of another ship within a non-observing area other than the observing area, as the channel capacity decreases.

### Claim 9 (depends on 2)

The ship information sharing device of claim 2, wherein the processing circuitry:
acquires another-ship data indicative of a position of another ship existing around the ship as the navigational data; and
with respect to a frequency to include another-ship data of another ship within an observing area into the transmission data set, reduces a frequency to include the another-ship data of another ship within a non-observing area other than the observing area, as the channel capacity decreases.

### Claim 10 (depends on 7)

The ship information sharing device of claim 7, wherein the processing circuitry:
acquires another-ship data indicative of a position of another ship existing around the ship as the navigational data; and
with respect to a frequency to include another-ship data of another ship within an observing area into the transmission data set, reduces a frequency to include the another-ship data of another ship within a non-observing area other than the observing area, as the channel capacity decreases.

### Claim 11 (depends on 8)

The ship information sharing device of claim 8, wherein the processing circuitry:
acquires a heading of the ship; and
uses an area between the heading and the starboard direction on the basis of the ship as the observing area.

### Claim 12 (depends on 8)

The ship information sharing device of claim 8, wherein the processing circuitry:
acquires a heading of the ship; and
uses an area ahead of the ship as the observing area.

### Claim 13 (depends on 8)

The ship information sharing device of claim 8, wherein the processing circuitry:
acquires a heading of the ship; and
uses a guard zone for detecting an entry of a target object set on the basis of the ship in the radar as the observing area.

### Claim 14 (depends on 8)

The ship information sharing device of claim 8, wherein the processing circuitry:
acquires a position of the ship;
calculates a collision risk of the ship with the another ship; and
uses an area corresponding to another ship or an area of which the collision risk is a threshold or above as the observing area.

### Claim 15 (depends on 1)

The ship information sharing device of claim 1, wherein the processing circuitry:
acquires a plurality of types of navigational data detected by a plurality of types of detection apparatuses; and
with respect to a frequency to include a given type of navigational data among the plurality of types of navigational data, reduces a frequency to include other types of navigational data into the transmission data set, as the channel capacity decreases.

### Claim 16 (depends on 10)

The ship information sharing device of claim 10, wherein the processing circuitry:
acquires a plurality of types of navigational data detected by a plurality of types of detection apparatuses; and
with respect to a frequency to include a given type of navigational data among the plurality of types of navigational data, reduces a frequency to include other types of navigational data into the transmission data set, as the channel capacity decreases.

### Claim 17 (depends on 1)

The ship information sharing device of claim 1, wherein the processing circuitry:
acquires the-ship data according to the ship itself, and another-ship data according to another ship other than the ship, as the navigational data; and
reduces a frequency to include the the-ship data into the transmission data set with respect to a frequency to include the another-ship data, as the channel capacity decreases.

### Claim 18 (depends on 16)

The ship information sharing device of claim 16, wherein the processing circuitry:
acquires the-ship data according to the ship itself, and another-ship data according to another ship other than the ship, as the navigational data; and
reduces a frequency to include the the-ship data into the transmission data set with respect to a frequency to include the another-ship data, as the channel capacity decreases.

### Claim 19

A ship information sharing method, comprising steps of:
serially acquiring navigational data according to navigation of a ship, the navigational data detected by a detection apparatus mounted on the ship;
acquiring a channel capacity of a channel to a ship information gathering device;
changing, according to the channel capacity, a frequency to include the navigational data into a transmission data set serially transmitted to the ship information gathering device; and
transmitting the transmission data set to the ship information gathering device.

### Claim 20

A ship information sharing system, comprising:
a ship information gathering device;
a detection apparatus mounted on a ship and configured to serially generate navigational data according to navigation of the ship;
a ship information sharing device configured to acquire a channel capacity of a channel to the ship information gathering device, and change, according to the channel capacity, a frequency to include the navigational data into a transmission data set serially transmitted to the ship information gathering device; and
a communication apparatus configured to transmit the transmission data set to the ship information gathering device.