Sonar fish finder apparatus providing split-screen display

Details Sonar fish finder apparatus providing split-screen display Sonar fish finder apparatus providing split-screen display

1988-08-05

1989-11-07

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

367 99, 367 88, G01S 1596

Patent

active

048796972

ABSTRACT:
A sonar fish finder system is provided for a boat for determining and displaying the location of fish in the body of water surrounding the boat. The system includes an electromechanical transducer assembly for transmitting sound waves in the body of water along separate paths in different directions into separate areas of the body of water, for receiving corresponding echoes from obstructions in the paths (including echoes from any fish in the paths) and for generating electrical signals in accordance with the received echoes. Electrical transmitters connected to the transducer assembly control transmission of the sound waves and receivers, connected to the transducer assembly, receive and process the electrical signals produced thereby. A microprocessor unit converts the output of said receivers into electrical data representative of display images of the separate areas of the body of water and a visual display device, preferably a liquid crystal display, simultaneously displays images corresponding to the electrical data at separate side by side locations on a screen to provide separate, simultaneous indications of the presence or absence of fish in the different areas.

REFERENCES:
patent: 3005973 (1961-10-01), Kietz
patent: 4096484 (1978-06-01), Ferre et al.
Stearns, Electronics Aboard LCD Depthfinders, Jan. 1985.
Bourne, How the Microchip Made Fish-Finders Smarter, Feb. 1985, pp. 57-61.
Eagle 3D-100 ad. in Cabelas 1988 Summer and 1987 Christmas catalogs.

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