Abstract: An onboard equipment network system comprises a radar core device, a GPS core device, an echo sounder core device and a sonar core device and display devices which are connected to a network through a hub. Each core device includes a detecting section or a positioning section, as well as a control section, a power supply section and a data transmitter for transmitting detecting signals or positioning signals, while each display device includes a command section for transmitting command data to the individual core devices for setting their operating conditions and a display section for displaying image data received from the individual core devices. The command data is transmitted using Transmission Control Protocol (TCP) while the image data is transmitted using User Datagram Protocol (UDP).

Abstract: An onboard equipment network system comprises a radar core device, a GPS core device, an echo sounder core device and a sonar core device and display devices which are connected to a network through a hub. Each core device includes a detecting section or a positioning section, as well as a control section, a power supply section and a data transmitter for transmitting detecting signals or positioning signals, while each display device includes a command section for transmitting command data to the individual core devices for setting their operating conditions and a display section for displaying image data received from the individual core devices. The command data is transmitted using Transmission Control Protocol (TCP) while the image data is transmitted using User Datagram Protocol (UDP).

Abstract: An onboard equipment network system comprises a radar core device, a GPS core device, an echo sounder core device and a sonar core device and display devices which are connected to a network through a hub. Each core device includes a detecting section or a positioning section, as well as a control section, a power supply section and a data transmitter for transmitting detecting signals or positioning signals, while each display device includes a command section for transmitting command data to the individual core devices for setting their operating conditions and a display section for displaying image data received from the individual core devices. The command data is transmitted using Transmission Control Protocol (TCP) while the image data is transmitted using User Datagram Protocol (UDP).

Abstract: An underwater detection system for displaying underwater conditions over a large area around a ship comprises a linear array type transducer, a transducer training mechanism for rotating the transducer stepwise in a horizontal plane, a receiver which forms a receiving beam for scanning a fan-like vertical cross-sectional area by giving specified time delays or phase differences to echo signals received by the transducer, an image memory for storing echo signal data picked up by the receiving beam in addresses defined by horizontal directions relative to the ship and depths, a sampling circuit for reading out data of one vertical line after another in a downward direction from the image memory and determining a bottom depth in each vertical line, a seabed data memory for storing bottom depths, a PPI image generator for producing a fractional PPI image depicting the bottom based on bottom depth data read from the seabed data memory, and an indicator for presenting search results in the form of a plan view cover

Abstract: A scanning sonar system for detecting objects and displaying them on a circular screen and producing audible signals coordinated with the visual signals indicating the detection of an object.

Abstract: An ultrasonic detection system which includes means for the transmission of signals in all directions, a circular array of transducers arranged at uniform intervals, means for producing output signals from spaced transducers and then sequentially combining outputs from sets of adjoining transducers to produce a plurality of received signals for display on indicating means.

Abstract: A plan position indicating system which includes a display screen and means for indicating on the screen the tilt angle of the transmitted beam and received signals to enable measurement not only of direction and distance but also the horizontal and vertical components thereof.

Abstract: Apparatus for controlling the angular direction of wave transmission of an ultrasonic transmitting system having a plurality of uniformly spaced transducers which includes means for successively shifting the phase of the signals emitted by each transducer and providing means for controlling the magnitude of the phase shift to alter the angle of transmission.