Fishfinder with readout of bottom coverage
First Claim
Patent Images
1. A fishfinder system for determining and displaying the location of fish or other targets in a body of water surrounding a boat, the system comprising:
- electromechanical transducer means for transmitting sound waves in a substantially conical beam into said body of water, for receiving corresponding echoes from obstructions including fish in the path of said sound waves and from the bottom of the body of water, and for generating electrical signals in accordance with said received echoes;
electrical transmitter means coupled to said transducer means for controlling transmission of said sound waves by the transducer means;
receiver means coupled to said transducer means for receiving and processing said electrical signals produced by said transducer means and for producing an output in accordance therewith;
processor means coupled to said receiver means for converting the output of said receiver means into electrical data representative of a display image of said received echoes in the form of a triangular cross-section of said conical beam;
said processor means comprising means for determining a numerical value corresponding to the coverage of said conical beam on said bottom of said body of water; and
visual display means coupled to said processor and including a screen for displaying said echo display image and said numerical value corresponding to said coverage of said conical beam on said bottom of said body of water.
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Abstract
A fishfinder having a real time or A-scope display with a numerical readout indicating the diameter of the transducer beam on the bottom of the water body. Further, an indicia indicating the position of the boat and downwardly diverging lines corresponding to the transducer beam are overlaid on the display.
31 Citations
12 Claims
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1. A fishfinder system for determining and displaying the location of fish or other targets in a body of water surrounding a boat, the system comprising:
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electromechanical transducer means for transmitting sound waves in a substantially conical beam into said body of water, for receiving corresponding echoes from obstructions including fish in the path of said sound waves and from the bottom of the body of water, and for generating electrical signals in accordance with said received echoes; electrical transmitter means coupled to said transducer means for controlling transmission of said sound waves by the transducer means; receiver means coupled to said transducer means for receiving and processing said electrical signals produced by said transducer means and for producing an output in accordance therewith; processor means coupled to said receiver means for converting the output of said receiver means into electrical data representative of a display image of said received echoes in the form of a triangular cross-section of said conical beam; said processor means comprising means for determining a numerical value corresponding to the coverage of said conical beam on said bottom of said body of water; and visual display means coupled to said processor and including a screen for displaying said echo display image and said numerical value corresponding to said coverage of said conical beam on said bottom of said body of water. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of determining and displaying the location of fish or other targets in a body of water surrounding a boat, comprising the steps of:
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transmitting sound waves from a transducer in a substantially conical beam into said body of water; receiving corresponding echoes from obstructions including fish in the path of said sound waves and from the bottom of the body of water; generating electrical signals in accordance with said received echoes; converting said electrical signals into electrical data representative of an echo display image of said received echoes in the form of a triangular cross-section of said conical beam; determining a numerical value corresponding to the coverage of said conical beam on said bottom of said body of water; and visually displaying said image and said numerical value corresponding to the coverage of said conical beam on said bottom of said body of water. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification