| L-3 COMMUNICATIONS CORPORATION Patent applications |
| Patent application number | Title | Published |
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| 20120007869 | Distributed physics based training system and methods - A distributed simulation system is composed of simulator stations linked over a network that each renders real-time video imagery for its user from scene data stored in its data storage. The simulation stations are each connected with a physics farm that manages the virtual objects in the shared virtual environment based on their physical attribute data using physics engines, including an engine at each simulation station. The physics engines of the physics farm are assigned virtual objects so as to reduce the effects of latency, to ensure fair fight requirements of the system, and, where the simulation is of a vehicle, to accurately model the ownship of the user at the station. A synchronizer system is also provided that allows for action of simulated entities relying on localized closed loop controls to cause the entities to meet specific goal points at specified system time points. | 01-12-2012 |
| 20110205368 | DIGITALLY ENHANCED NIGHT VISION DEVICE - A user portable viewing device (D) includes a plurality of non-coaxially aligned sensors ( | 08-25-2011 |
| 20110183301 | METHOD AND SYSTEM FOR SINGLE-PASS RENDERING FOR OFF-AXIS VIEW - A system and method are provided for review of a trainee being trained in simulation. The system has a computerized simulator displaying to the trainee a real-time out-the-window (OTW) scene of video made up of a series of images each rendered in real-time from stored scene data. A review system stores or displays a view of the OTW scene video as seen from a time-variable detected viewpoint of the trainee. Each frame of this video is independently rendered in a single pass from the scene data using a projection matrix that is derived from a detected eyepoint and line of sight of the trainee. A HUD display with imagery superimposed on the OTW view may advantageously combined with the perspective-distorted imagery of the review system. The video displayed or stored by the review system accurately records or displays the OTW scene as seen by the trainee. | 07-28-2011 |
| 20100240140 | ENERGETIC MATERIAL DETECTOR - A method of detecting energetic materials, such as explosives, includes energizing a sample area that contains particles of energetic materials. In the method, temperature characteristics from the sample area are monitored, and a temperature released from exothermic decomposition of the particles is detected. The method further includes analyzing the detected temperature to determine the presence of the exothermic compound which caused the decomposition. | 09-23-2010 |
| 20100073482 | Method and apparatus for providing a scalable multi-camera distributed video processing and visualization surveillance system - A scalable architecture for providing real-time multi-camera distributed video processing and visualization. An exemplary system comprises at least one video capture and storage system for capturing and storing a plurality of input videos, at least one vision based alarm system for detecting and reporting alarm situations or events, and at least one video rendering system (e.g., a video flashlight system) for displaying an alarm situation in a context that speeds up comprehension and response. One advantage of the present architecture is that these systems are all scalable, such that additional sensors (e.g., cameras, motion sensors, infrared sensors, chemical sensors, biological sensors, temperature sensors and like) can be added in large numbers without overwhelming the ability of security forces to comprehend the alarm situation. | 03-25-2010 |
| 20100063654 | Locator Beacon Disposed Internal to an Enclosure of a Flight Data Recorder and Method Therefor - A flight data recorder includes an enclosure and electronic interface within the enclosure. The electronic interface is coupled for receiving data. A crash survivable memory unit is disposed within the enclosure. The crash survivable memory unit includes a memory module electrically coupled to the electronic interface for storing the data. A locator beacon is disposed within the enclosure or within the crash survivable memory unit. The locator beacon is an acoustic resonator which emits ultrasonic pulses. A battery is disposed within the enclosure or within the crash survivable memory unit for providing operating power to the locator beacon. The battery is rechargeable. The battery status is stored in the memory module. A beacon control circuit is disposed within the enclosure or within the crash survivable memory unit for monitoring the battery. A beacon activation device detects a crash event and notifies the beacon control circuit to activate the locator beacon. | 03-11-2010 |
| 20090319102 | Flight Recorder Having Integral Reserve Power Supply Within Form Factor of Enclosure and Method Therefor - A flight recorder includes an enclosure having a notch formed on one side or corner of the enclosure. An electronic interface is disposed within the enclosure. The electronic interface is coupled for receiving flight data, video data, and audio data. A memory unit is disposed within the enclosure and electrically connected to the electronic interface for storing the data. The memory unit contains a non-volatile memory device. A reserve power supply is physically disposed within the notch of the enclosure. The reserve power supply contains a rechargeable battery. A clamp secures the reserve power supply to the enclosure to make the reserve power supply removable from the enclosure. The reserve power supply has an electrical connector coupled to the enclosure for providing an operating voltage to the electronic interface and memory unit. The reserve power supply and electrical connector physically reside within a form factor of the enclosure. | 12-24-2009 |
| 20090281756 | Accelerometer and Method for Error Compensation - An accelerometer has an acceleration transducer producing uncorrected analog acceleration signals representing vertical, lateral, and longitudinal components of acceleration. An error correction system is connected to the acceleration transducer for receiving the uncorrected analog acceleration signals. The error correction system includes a system controller for generating a plurality of correction coefficients, an analog to digital converter which converts the uncorrected analog acceleration signals to uncorrected digital acceleration signals, a filter for filtering the uncorrected digital acceleration signals, an error compensation circuit receiving the correction coefficients to compensate the uncorrected digital acceleration signals, and a digital to analog converter which converts the corrected digital acceleration signals to corrected analog acceleration signals. The error compensation circuit corrects for bias offset, cross-axis alignment errors, scaling errors, and thermal offset. The system controller arranges a plurality of calibration measurements into a matrix and inverts the matrix to calculate the correction coefficients. | 11-12-2009 |
| 20090277683 | Crash Survivable Memory Unit - A flight recorder includes an information input device, heat sensitive memory device electrically connected to the information input device, and housing enclosing the heat sensitive memory device. The housing is made with a first material and having a plurality of openings made through the housing. A sacrificial material is disposed between the housing and heat sensitive memory device. The sacrificial material having a lower melting temperature than the first material such that the sacrificial material changes state and egresses through the openings in the housing when exposed to heat to create an air gap between the housing and heat sensitive memory device. The first material includes nickel and the sacrificial material includes aluminum. A heat insulating layer is disposed between the sacrificial material and heat sensitive memory device. A second sacrificial material is disposed between the heat insulating layer and heat sensitive memory device. | 11-12-2009 |
| 20090237508 | METHOD AND APPARATUS FOR PROVIDING IMMERSIVE SURVEILLANCE - A method and apparatus for providing immersive surveillance wherein a remote security guard may monitor a scene using a variety of imagery sources that are rendered upon a model to provide a three-dimensional conceptual view of the scene. Using a view selector, the security guard may dynamically select a camera view to be displayed on his conceptual model, perform a walk through of the scene, identify moving objects and select the best view of those moving objects and so on. | 09-24-2009 |
| 20090206905 | SELF CLOCK GENERATION - A clock signal may be generated for a receiving circuit without requiring an external oscillator. A first digital circuit may convert a first signal edge at an input into a first clock signal at an output, and a second digital circuit, in feedback connection with the first digital circuit, may generate a second signal edge at the input based on the first clock signal at the output. Then, the first circuit may convert the second signal edge at the input to a second clock signal at the output. Thus, the first circuit and the second circuit, in combination, may generate a continuous stream of signal edges at the input and clock signals at the output. The second circuit may communicate with the controller circuit that may indicate that a subsequent clock signal is needed. The controller circuit may send commands and receive status from the receiving circuit. | 08-20-2009 |
| 20090099824 | Distributed Physics Based Training System and Methods - A distributed simulation system is composed of simulator stations linked over a network that each renders real-time video imagery for its user from scene data stored in its data storage. The simulation stations are each connected with a physics farm that manages the virtual objects in the shared virtual environment based on their physical attribute data using physics engines, including an engine at each simulation station. The physics engines of the physics farm are assigned virtual objects so as to reduce the effects of latency, to ensure fair fight requirements of the system, and, where the simulation is of a vehicle, to accurately model the ownship of the user at the station. A synchronizer system is also provided that allows for action of simulated entities relying on localized closed loop controls to cause the entities to meet specific goal points at specified system time points. | 04-16-2009 |
| 20090066858 | DISPLAY SYSTEM FOR HIGH-DEFINITION PROJECTORS - A display system is provided to surround a user with an out-the window scene. The system includes a screen structure that is a facetted back-projection dome made up of a polygonal polar top facet surrounded by trapezoidal facets angulated downward from it in an upper facet row. A middle row of facets extends angulated downward therefrom, and a lower row of trapezoidal facets extends down from them. Each facet has video projected thereon by a high definition projector, and to maximize resolution and efficiently use the projector output, the vertical height of each facet makes use of the full vertical field of pixels available from the associated projector. The facets are all tangent to a sphere about a design eyepoint of the dome. The projector resolutions and the size, position and material of the facets are such that the imagery visible on the inside of the dome on the facets is at resolution corresponding to a visual acuity of 20/50 or higher, preferably 20/20, and at or near eye-limiting resolution. | 03-12-2009 |
| 20080309552 | SYSTEM AND METHOD FOR GPS ACQUISITION USING ADVANCED TIGHT COUPLING - A system and method for GPS acquisition in relatively high interference is described. Acquisition is aided by an Advanced Tightly Coupled (ATC) tracking filters that compute a satellite range residuals and range rate residuals for satellites being acquired. Multiple channels are used in parallel to search for the desired satellites. Range residuals from the ATC filters are used to correct the computed receiver offset and thus allow acquisition in the presence of relatively high interference. | 12-18-2008 |
| 20080291279 | Method and System for Performing Video Flashlight - In an immersive surveillance system, videos or other data from a large number of cameras and other sensors is managed and displayed by a video processing system overlaying the data within a rendered 2D or 3D model of a scene. The system has a viewpoint selector configured to allow a user to selectively identify a viewpoint from which to view the site. A video control system receives data identifying the viewpoint and based on the viewpoint automatically selects a subset of the plurality of cameras that is generating video relevant to the view from the viewpoint, and causes video from the subset of cameras to be transmitted to the video processing system. As the viewpoint changes, the cameras communicating with the video processor are changed to hand off to cameras generating relevant video to the new position. Playback in the immersive environment is provided by synchronization of time stamped recordings of video. Navigation of the viewpoint on constrained paths in the model or map-based navigation is also provided. | 11-27-2008 |
