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| Number | Title | Issue Date |
| 4376278 | Apparatus and method for collision avoidance A collision avoidance apparatus having a voltage source producing a predetermined voltage level. A switching network within the collision avoidance apparatus is capable of alternately applying the predetermined voltage level to the communication medium an... | 03/08/1983 |
| 4369425 | Voiced alerting system A ground-to-air, voiced alerting system whereby a ground controller can communicate traffic warning messages to a pilot in an automatic fashion via a voice radio band and a voiced message generator. The system generally comprising means for transmitting a... | 01/18/1983 |
| 4344065 | Convergence indicator for marine and flight vehicles A visual aid for boat skippers to which a skipper inputs information about the relative position of another observed boat and a navigation light color which he observes. The device has a group of input switches each indicating a possible relative position... | 08/10/1982 |
| 4257703 | Collision avoidance using optical pattern growth rate A passive electro-optical collision avoidance system disposed within a moving vehicle for generating a collision avoidance signal. The system comprises a lens, image sensor and image processor wherein the image processor generates a collision avoidance si... | 03/24/1981 |
| 4196474 | Information display method and apparatus for air traffic control The invention relates to a method and apparatus for providing pilots of aircraft or the like with: information about the presence, identification and relative location of, and time to potential collision with, other aircraft, objects, and obstructions, i.... | 04/01/1980 |
| 4167006 | Collision avoidance system of aircraft A collision avoidance system for aircraft using an on-board beacon interrogator. If altitude information is not included in a response signal from a transponder of an other aircraft or the response signal is garbled because a plurality of other aircraft a... | 09/04/1979 |
| 4163972 | Automatic shipboard collision avoidance system An automatic shipboard collision avoidance system comprises radar; a situation indicator connected to the radar receiver; a computer, which extracts target echoes from clutter and determines the coordinates and motion parameters of targets; an interface t... | 08/07/1979 |
| 4153935 | Navigational aid A navigational aid enables the effect of a course and/or speed alteration of one vessel on the nearest possible approach distance of another vessel to be calculated, using data readily obtainable from a simple relative radar display on said one vessel. Th... | 05/08/1979 |
| 4121287 | Alarm filtering in a ground proximity warning system A ground proximity warning system used by aircraft when unsafe flight configurations defined by specified flight warning mode envelopes are detected. The invention provides that alarm generation signals are not immediately given, but instead the continuin... | 10/17/1978 |
| 4095666 | Apparatus for preventing collision of vehicles An apparatus for preventing collision of a vehicle comprises A device for measuring a distance R from a driving vehicle to an obstacle and a relative velocity V of the driving vehicle to said obstacle; A circuit for generating a damping signal when the relation of ... | 06/20/1978 |
| 4063073 | Computer system to prevent collision between moving objects such as aircraft moving from one sector to another A method and system of preventing collisions between aircraft comprising defining an imaginary airspace around the center of each aircraft, the airspace having a given radius (R) and height (H), and moving with and at the same velocity as the aircraft. An... | 12/13/1977 |
| 4011563 | Variable range automotive radar system An automotive ranging and detecting system wherein clutter returns from out of lane objects at curves in a road are eliminated by adjusting the maximum range of the radar in accordance with the radius of curvature of the path of travel of the vehicle. BAC... | 03/08/1977 |
| 4008471 | Correlator to reduce bin straddle in a collision avoidance system In a cooperative collision avoidance system the detected reply signals to interrogation probe signals are correlated by a digital circuit that processes all the reply signals identifying targets over non-targets ("fruit"). The correlator is capable of det... | 02/15/1977 |
| 3964702 | Anti-collision safety device for a passenger transport system on tracks An anti-collision safety control for vehicles travelling on tracks; the control comprises two safety loops per vehicle, linked to two common loops in a central control station. Each vehicle loop comprises control circuits for determining the distance to t... | 06/22/1976 |
| 3958218 | Aircraft ground proximity warning system with speed compensation By using air speed as an input to a ground proximity warning system that includes: a signal representative of the time rate of change of the aircraft altitude with respect to ground; circuitry for limiting the amplitude of this signal; a signal that repre... | 05/18/1976 |
| 3958219 | Terrain closure warning system with altitude rate signal conditioning In an aircraft terrain warning system utilizing a radar altimeter wherein the rate of closure to the terrain is compared with the aircraft's altitude above the terrain to generate a warning signal when the closure rate is excessive for a particular altitu... | 05/18/1976 |
| 3946358 | Aircraft ground proximity warning instrument An aircraft instrument for warning the pilot that the aircraft is in an unsafe condition in proximity to the ground. The instrument has inputs representing aircraft configuration, flight condition with respect to the ground, and glide slope. Detector circ... | 03/23/1976 |
| 3944968 | Aircraft ground proximity warning system having speed versus altitude compensation The warning system includes a function generator for generating a signal representative of a minimum altitude over terrain as a function of the aircraft's speed. This signal is combined with a signal representing the aircraft's actual altitude over the te... | 03/16/1976 |
| 3939334 | Closest point of approach calculator A manually operative, programmed (dedicated) calculator that computes the nge, bearing, and time of closest point of approach for any number of selected target ships, and also their course and speed.... | 02/17/1976 |
| 3936796 | Aircraft ground proximity warning instrument An aircraft instrument for warning the pilot that the aircraft is in an unsafe condition in proximity to the ground. The instrument has inputs representing aircraft configuration, flight condition with respect to the ground, and glide slope. Detector circ... | 02/03/1976 |
| 3934222 | Terrain closure warning system with climb inhibit and altitude gain measurement In a terrain warning system wherein the rate of the aircraft's closure to the terrain is compared to the aircraft's altitude above the terrain in order to generate a warning signal for excessive closure rates, a circuit is provided to inhibit the warning ... | 01/20/1976 |
| 3934221 | Terrain closure warning system with altitude rate signal conditioning In an aircraft terrain warning system utilizing a radar altimeter wherein the rate of closure to the terrain is compared with the aircraft's altitude above the terrain to generate a warning signal when the closure rate is excessive for a particular altitu... | 01/20/1976 |
