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| Number | Title | Issue Date |
| 7272072 | Method of converting received data to a two-dimensional color map Beams of sampled data are converted into a two-dimensional color map thereof. Fourier transforms are performed on range cells of each beam with each transform being sampled M times where M is defined by M discrete sets of red, green and blue intensity values of a co... | 09/18/2007 |
| 7119503 | Temperature-to-color converter and conversion method A color-to-temperature converter senses temperatures of a device, translates the temperatures into light of different colors, and emits or displays the light. The color-to-temperature converter includes a tri-color light emitting diode (LED) assembly with inputs cor... | 10/10/2006 |
| 6980484 | Fish finding device and method for detecting and distinguishing marine life from a sonar reflected marker An improved fish finding device and method for detecting and distinguishing marine life from a sonar reflected marker that generates artificial echoes comprises steps of 1. transmitting of sonar waves 2. receiving of sonar echoes 3. distinguishing the sonar echoes r... | 12/27/2005 |
| 6512477 | Detecting apparatus While successively varying its orientation at specific intervals, a detecting apparatus transmits pulsed radio waves from an antenna (1), and data corresponding to input levels derived from one sweep are written in a primary memory (4). output values obta... | 01/28/2003 |
| 6466891 | System for providing an estimate of the location of an undersea object A system is disclosed that provides. a sonar operator with the most likely range to a target of interest. The system generates and displays a contour based on ship's parameters, target parameters, environmental data, and operator parameters. The sonar ope... | 10/15/2002 |
| 6317385 | Aquaculture feeding monitor The invention is a system for measuring the rate of food pellet loss in a fish farming operation. The fish are held in a seacage in a body of water. Food dropped into the seacage sinks down through the cage and uneaten pellets exit the bottom of the seaca... | 11/13/2001 |
| 5699318 | Topographic composition sonar map A video display of the bottom of a body of water uses three types of data collected from a side looking sonar system, and includes: imagery composed of highlights and shadows from the topography of the bottom; backscattering signal strength proportional t... | 12/16/1997 |
| 5598206 | Beamformed television A system has been invented which produces images comparable to those produced by video cameras. This BEAMFORMED TELEVISION uses a transmitting array, a receiving array, and signal processing equipment to form interactive beams. The transmitting array syst... | 01/28/1997 |
| 5561641 | Underwater detection system for determining carrier frequencies of signals arriving from a wide area The present invention is directed to provide an underwater detection system which can determine frequency components contained in echoes arriving from all azimuthal directions at high speed and enhance target discriminating capabilities by presenting such... | 10/01/1996 |
| 5541891 | Distance sensing device A distance sensing device for a motor vehicle, positioned at the rear of the motor vehicle, for sensing a distance to an obstacle to the rear of the motor vehicle, has a brake light unit positioned in the interior of the motor vehicle at the rear window. ... | 07/30/1996 |
| 5099458 | Underwater detection system The present invention relates to an underwater detection system which radiates ultrasonic wave search signals by a transmitter disposed at a first point in the water, receives echo signals resulting from the search signals to detect underwater conditions,... | 03/24/1992 |
| 5031157 | Color sonar for underwater object collision avoidance A method and apparatus for presenting elevation angle information with rect to overhanging objects to an operator of a submersible incorporates a substantial portion of the sonar equipment found onboard conventional submersibles. Reflections of radiant e... | 07/09/1991 |
| 4829492 | Depthfinder with color LCD display A depthfinder has a color LCD display without a polarizer. This permits viewing of the display in bright sunlight, such as would be ordinarily used for fishing, without washing out of the display. Additionally, the provision of a LCD display without a pol... | 05/09/1989 |
| 4706185 | Apparatus for displaying ultrasonic image An apparatus for displaying ultrasonic images picked-up by an ultrasonic microscope including a digital scan converter having three image memories for storing successively picked-up three ultrasonic images. The digital scan converter functions to reconstr... | 11/10/1987 |
| 4694434 | Three-dimensional imaging system An acoustic pulse echo imaging system capable of producing an image of a three-dimensional object utilizing a two-dimensional display having perspective capabilities is described. In the system angular relationships of targets at all ranges are maintained... | 09/15/1987 |
| 4686659 | Color sonar system for displaying echo signals from fish In a color sonar system especially suitable for displaying fish echo signals, high and low frequency echo image signals are displayed utilizing colors corresponding to the echo signal strength, when the signal strength differences between the simultaneous... | 08/11/1987 |
| 4672589 | Underwater detection system An underwater detection system which has a transmitting and receiving unit for radiating an ultrasonic wave pulse into the water within a narrow sector and receiving echo signals by a plurality of reception beams, and turns the transmitting and receiving ... | 06/09/1987 |
| 4633447 | Response waveform characterization of geophysical data A method of processing geophysical seismic data so as to enhance its evaluation and interpretation. A plurality of response waveform characteristics are developed from a seismic signal. The response waveform characteristics can provide empirical basis for... | 12/30/1986 |
| 4467461 | Interactive color analysis of geophysical data Method and apparatus for concurrently and interactively displaying a selected plurality of measurable properties of geophysical data to empirically derive the best combined presentation of the selected attribute properties for interpretation. The techniqu... | 08/21/1984 |
| 4308599 | Echo sounder transmitting radiant energy at two frequencies An echo sounder including a unit for transmitting, into a medium, acoustic signals at two slightly differing high frequencies and in the form of pulses, resulting in the creation of an acoustic signal in the medium at a low frequency equal to the differen... | 12/29/1981 |
| 4290125 | Fish detector capable of detecting species of fish A fish detector capable of detecting species of fish. Two ultrasonic sounds at different frequencies and echoes are detected by receivers tuned to said different frequencies, respectively. The output signals from the receivers are converted into binary-co... | 09/15/1981 |
| 4247924 | Proximity indicating equipment A proximity indicator, for example to indicate a safe height of release of a lifeboat, uses pulsed sonar to trigger a bistable circuit into a set state by the transmitted pulses and a reset state by received pulses which exceed a predetermined level. Red ... | 01/27/1981 |
| 4247923 | Method and apparatus for detecting the location of a marine pipeline or cable Method and apparatus for detecting the location of a marine pipeline or cable, whereby acoustic pulses are transmitted by a submarine pulse transmitter carried by a vessel. These pulses, as well as the reflections of the pulses on the seabottom and on the... | 01/27/1981 |
| 4179681 | Target tracking sonar signal processing and display system A sonar signal processing and display system is described which converts log return data to digital form for storage in a magnetic core memory, from which the data can be reconstituted as analog video signals for CRT display at a higher frame rate. Descr... | 12/18/1979 |
| 4105912 | Radar viewing device The viewing screen of a radar apparatus contains a pair of luminescent layers having green and red luminescing colors respectively. The color of the radar image may be altered by photosensitive means responsive to ambient light which alters the anode volt... | 08/08/1978 |
| 4104609 | Fish-finder In a fish-finder of the type emitting ultrasonic pulses into the water and receiving and displaying the reflected waves, the received reflected waves are converted into digital signals corresponding to their levels and written into a main memory as inform... | 08/01/1978 |
| 4060791 | Imaging system An energy imaging system providing high resolution at the center of the field of view and reduced resolution as a function of the distance away from the center.... | 11/29/1977 |
| 3986160 | Visualization by ultrasonic detection A system for sensing by ultrasonic vibrational energy the shape and character of objects immersed in a visually opaque transmission medium is disclosed. Frequency modulated ultrasonic waves are projected to irradiate an object, with reflected energy from ... | 10/12/1976 |
| 3964012 | Color display system in ultrasonic sonar A fish detection sonar is provided wherein a receiver has a display device comprising a rotary disk having a display element mounted thereupon, and a scale disk disposed coaxially of and in opposed relation with the rotary disk; the ultrasonic signal tran... | 06/15/1976 |
