BBN Technologies Corp. Patent applications |
Patent application number | Title | Published |
20130014117 | ENERGY-AWARE COMPUTING ENVIRONMENT SCHEDULER - A method includes receiving a process request, identifying a current state of a device in which the process request is to be executed, calculating a power consumption associated with an execution of the process request, and assigning an urgency for the process request, where the urgency corresponds to a time-variant parameter to indicate a measure of necessity for the execution of the process request. The method further includes determining whether the execution of the process request can be delayed to a future time or not based on the current state, the power consumption, and the urgency, and causing the execution of the process request, or causing a delay of the execution of the process request to the future time, based on a result of the determining. | 01-10-2013 |
20120307595 | SYSTEMS AND METHODS FOR DISAMBIGUATING SHOOTER LOCATIONS WITH SHOCKWAVE-ONLY LOCATION - The systems and methods described herein relate to an airborne shooter detection system having a plurality of sensors coupled to the body of an aircraft such as a helicopter. The sensors are arranged to receive shockwave-only signals. The received signals are analyzed to determine an unambiguous shooter location. The analysis may include measuring the arrival times of the shockwaves of projectiles at each of the sensors, determining the differences in the arrival times among sensors, computing a set of ambiguous solutions corresponding to a shooter, and clustering this set of solutions to determine the unambiguous shooter location. The systems and methods described herein may also be used to determine if multiple shooters are present, and subsequently determine the shooter locations for each of the multiple shooters. | 12-06-2012 |
20120226489 | AUTOMATIC WORD ALIGNMENT - An unsupervised boosting strategy is applied to refining automatic word alignment. In some examples, the strategy improves the quality of automatic word alignment, for example for resource poor language pairs, thus improving Statistical Machine Translation (SMT) performance. | 09-06-2012 |
20120182834 | WEARABLE SHOOTER LOCALIZATION SYSTEM - A wearable shooter localization system including a microphone array, processor, and output device for determining information about a gunshot. The microphone array may be worn by on the upper arm of the user. A second array, which may operate cooperatively or independently from the first array, may be worn on the other arm. The microphone array is sensitive to the acoustic effects of gunfire and provides a set of electrical signals to the processing unit, which identifies the origin of the fire. The system may include orientation and/or motion detection sensors, which the processor may use to either initially compute a direction to the origin of a projectile in a frame of reference meaningful to a wearer of the system or to subsequently update that direction as the wearer moves. | 07-19-2012 |
20120177219 | WEARABLE SHOOTER LOCALIZATION SYSTEM - A wearable shooter localization system including a microphone array, processor, and output device for determining information about a gunshot. The microphone array may be worn by on the upper arm of the user. A second array, which may operate cooperatively or independently from the first array, may be worn on the other arm. The microphone array is sensitive to the acoustic effects of gunfire and provides a set of electrical signals to the processing unit, which identifies the origin of the fire. The system may include orientation and/or motion detection sensors, which the processor may use to either initially compute a direction to the origin of a projectile in a frame of reference meaningful to a wearer of the system or to subsequently update that direction as the wearer moves. | 07-12-2012 |
20120082006 | SELF CALIBRATING SHOOTER ESTIMATION - Disclosed are systems and methods that can be used to detect shooters. The systems and methods described herein use arrival times of a shockwave, produced by a shot, at a plurality of sensors to assign weights to each of the plurality of sensors, and determine a shot trajectory based on the assigned weights. | 04-05-2012 |
20110205961 | CARRIER SENSE MULTIPLE ACCESS (CSMA) PROTOCOL WITH MULTI-PACKET RECEPTION (MPR) IN A WIRELESS AD HOC NETWORK - This invention relates to systems and methods for communication in a wireless ad hoc network that employs multi-packet reception. The wireless network includes a transmitting node configured to transmit a control packet to a receiving node while other nodes within a transmission range of the transmitting node are involved in ongoing communication. The receiving node is configured to receive the control packet while simultaneously receiving a second packet from a second transmitting node, and to process the control packet without aborting the receiving of the second packet. Methods for transmitting and receiving multiple packets simultaneously are also presented. | 08-25-2011 |
20110188586 | SCALABLE HIGH SPEED MIMO-SATELLITE COMMUNICATION SYSTEM - This invention provides satellite communication systems and methods that employ a satellite in MIMO communication with a geographically-distributed array of ground nodes. In an embodiment, the satellite communication system includes a MIMO satellite configured to receive first information at a higher bandwidth, process the first information into lower bandwidth signals, and relay the lower bandwidth signals using a satellite communication link. The geographically-separated ground nodes receive the lower bandwidth signals and transmit terrestrial signals using high-speed communication links. A central processing node receives the terrestrial signals over the high-speed communication links and combines the terrestrial signals to obtain the higher data rate signals. | 08-04-2011 |
20110169638 | SUBSURFACE INTRUSION DETECTION SYSTEM - A system to detect subsurface activity. The system employs vibration sensor pairs, with each sensor pair having a shallow sensor and a deep sensor. Outputs of the sensors of a pair are processed together and events are detected based on the relative values detected by the sensors of the pair. When signal energy departs from a detected background level, the relative amplitude and frequency content of vibrations measured at the shallow and deep sensors may be compared. The comparison may be performed, at least in part, using a classifier that discriminates between subsurface activity and surface to activity. The outputs of sensor pairs may be aggregated to make a determination of whether subsurface activity exists and/or its location. Aggregation may involve comparing the outputs of the same sensor pair at multiple time intervals or may involve comparing the outputs of arrayed sensor pairs. | 07-14-2011 |
20110153982 | SYSTEMS AND METHODS FOR COLLECTING DATA FROM MULTIPLE CORE PROCESSORS - Systems and methods are disclosed for collecting data from cores of a multi-core processor using collection packets. A collection packet can traverse through cores of the multi-core processor while accumulating requested data. Upon completing the accumulation of the requested data from all required cores, the collection packet can be transmitted to a system operator for system maintenance and/or monitoring. | 06-23-2011 |
20110072279 | DEVICE AND METHOD FOR SECURELY STORING DATA - Devices and methods for securely storing data are provided. A device for constructing an encryption key comprising a tamper-protection barrier that encloses one or more memory devices is provided. The memory stores data for constructing the encryption key. The memory may include a single memory device or a plurality of memory devices. The tamper-protection barrier also encloses a security processor configured to combine the data stored in the memory based in part on a function, such as a logical exclusive-or (XOR) function, to construct the encryption key. The stored data in the memory may include partial keys. These partial keys may be created based in part on applying the XOR function to an encryption key. | 03-24-2011 |
20100310172 | SEGMENTAL RESCORING IN TEXT RECOGNITION - A method for text recognition includes generating a number of text hypotheses for an image, for example, using an HMM based approach using fixed-width analysis features. For each text hypothesis, one or more segmentations are generated and scored at the segmental level, for example, according to character or character group segments of the text hypothesis. In some embodiments, multiple alternative segmentations are considered for each text hypothesis. In some examples, scores determined in generating the text hypothesis and the segmental score are combined to select an overall text recognition of the image. | 12-09-2010 |
20100299147 | SPEECH-TO-SPEECH TRANSLATION - Systems and methods for facilitating communication including recognizing speech in a first language represented in a first audio signal; forming a first text representation of the speech; processing the first text representation to form data representing a second audio signal; and causing presentation of the second audio signal to a second user while responsive to an interrupt signal from a first user. In some embodiments, processing the first text representation includes translating the first text representation to a second text representation in a second language and processing the second text representation to form the data representing the second audio signal. In some embodiments include accepting an interrupt signal from the first user and interrupting the presentation of the second audio signal. | 11-25-2010 |
20100287559 | ENERGY-AWARE COMPUTING ENVIRONMENT SCHEDULER - A method includes receiving a process request, identifying a current state of a device in which the process request is to be executed, calculating a power consumption associated with an execution of the process request, and assigning an urgency for the process request, where the urgency corresponds to a time-variant parameter to indicate a measure of necessity for the execution of the process request. The method further includes determining whether the execution of the process request can be delayed to a future time or not based on the current state, the power consumption, and the urgency, and causing the execution of the process request, or causing a delay of the execution of the process request to the future time, based on a result of the determining. | 11-11-2010 |
20100281045 | Methods and systems for representing, using and displaying time-varying information on the semantic web - Methods and systems for providing start and stop properties to Semantic Web structured resources and statements are disclosed. The start and stop properties can specify a lifetime during which a resource or statement can be valid. A call or query to one or more resources can return statement data including the start and stop properties for the resources and/or statements. Dates can be specified with the call or query such that the returned resources and statements have lifetimes including the specified dates. Screen images of the data can display subject and object nodes and predicate arcs for the selected dates. A sequence of screen images can display a timeline of nodes and arcs by adding or hiding nodes and arcs to correspond with the start and stop properties of the statements. Tools are provided for the user to navigate through the sequence. | 11-04-2010 |
20100254309 | SYSTEM, DEVICE, AND METHOD FOR UNIFYING DIFFERENTLY-ROUTED NETWORKS USING VIRTUAL TOPOLOGY REPRESENTATIONS - Systems, devices, and methods for routing data through a first and a second ad-hoc network are described. Routing information structured according to a first routing protocol associated with a plurality of nodes in the first network is received at a border node that is part of at least the first and second ad-hoc networks. Routing information structured according to a second routing protocol associated with a plurality of nodes in the second ad-hoc network is also received. The received routing information is translated from the first routing protocol to the second routing protocol, or vice versa, and disseminated to nodes in the first or second ad-hoc networks. Data packets from nodes in the first ad-hoc network are forwarded to nodes in the second ad-hoc network, or vice versa, based in part on the translated routing information. | 10-07-2010 |
20100246961 | MULTI-FRAME VIDEOTEXT RECOGNITION - Multi-frame persistence of videotext is exploited to mitigate challenges posed by varying characteristics of videotext across frame instances to improve OCR techniques. In some examples, each frame of video is processed to form multiple binary images, and one or more text hypotheses is formed from each binary image. In some examples, one or more combined images are formed from multiple frames processed to form a binary image and a corresponding text hypothesis. The text hypotheses are combined to yield an overall text recognition output. | 09-30-2010 |
20100238956 | Methods and systems for distributed synchronization - The invention provides a set of methods and systems for obtaining a synchronized signal in a distributed fashion. The methods and systems described herein allow a node to obtain a periodic signal that would be synchronized with the periodic signal obtained at another node when both nodes follow the same synchronizing procedure, without the need for centralized control of both nodes or the need for all nodes to have coordinated local oscillators. The invention includes beamforming methods and systems for producing a coherent beam at a target location and at a target frequency using the synchronized signal. | 09-23-2010 |
20100232372 | DISTRIBUTED ASSIGNMENT OF FREQUENCY CHANNELS TO TRANSCEIVERS OVER DYNAMIC SPECTRUM - The invention relates to systems and methods of operating a wireless network including allocating and assigning frequency channels using a dynamic and distributed process. For example, a network node in an ad hoc wireless network will assign frequency channels to one or more of its transceivers based on at least one of a list of allowed frequency channels and a neighbor-frequency channel list. | 09-16-2010 |
20100214974 | HYBRID COMMUNICATIONS LINK - A hybrid communications link includes a slow, reliable communications link and a fast unreliable communications link. Communication via the hybrid communications link selectively uses both the slow, reliable communications link and the fast, unreliable communications link. | 08-26-2010 |
20100211378 | MODULAR APPROACH TO BUILDING LARGE LANGUAGE MODELS - Methods for building arbitrarily large language models are presented herein. The methods provide a scalable solution to estimating a language model using a large data set by breaking the language model estimation process into sub-processes and parallelizing computation of various portions of the process. | 08-19-2010 |
20100177297 | SYSTEMS AND METHODS FOR QUANTUM RECEIVERS FOR TARGET DETECTION USING A QUANTUM OPTICAL RADAR - A quantum-illumination receiver is described comprising a phase-conjugation and mixing system for mixing and/or conjugating the idler beam from an entangled light transmitter and the return beam from the target to produce an output beam that is representative of the presence or absence of the target, a light beam collector for receiving a return light beam from the target region and directing the return light beam from a target region to the phase-conjugation and mixing system input, an optical input for receiving an idler light beam from a transmitter and directing the idler light beam from the transmitter to the phase-conjugation and mixing system, a sensor for measuring the output of the phase-conjugation and mixing system, and a processor to process the output of the sensor to make an determination about the presence of the target. | 07-15-2010 |
20100118049 | MOTION-BASED VISUALIZATION - A data-display system employs a display in which the representations of data objects are caused to move on the display in order to convey information about the represented data objects. In one example, icons in a link-analysis display that represent data objects satisfying a selection criterion are made to execute distinctive motion. In another example, three-dimensional models of moving bodies in whose features components of respective data objects are encoded are projected onto a screen plane, and the resultant values are used to generate the display. | 05-13-2010 |
20100076972 | CONFIDENCE LINKS BETWEEN NAME ENTITIES IN DISPARATE DOCUMENTS - The invention relates to cross-document entity co-reference systems in which naturally occurring entity mentions in a document corpus are analyzed and transformed into name clusters that represent global entities. In a first aspect of the invention, a name variation module analyzes naturally occurring names of entities extracted from the document corpus and provides an initial set of equivalent names that could refer to the same real world entity. In a second aspect of the invention, a disambiguation module takes the initial set of equivalent names and uses an agglomerative clustering algorithm to disambiguate the potentially co-referent named entities. | 03-25-2010 |
20100046484 | TIME DIVISION MULTIPLE ACCESS FOR NETWORK NODES WITH MULTIPLE RECEIVERS - A system facilitates communication among nodes in a wireless network. A timeslot is assigned to each of a group of nodes ( | 02-25-2010 |
20100040062 | SYSTEMS AND METHODS FOR FORWARDING DATA UNITS IN A COMMUNICATIONS NETWORK - A network device ( | 02-18-2010 |
20100027556 | HYBRID COMMUNICATIONS LINK - A hybrid communications link includes a slow, reliable communications link and a fast unreliable communications link. Communication via the hybrid communications link selectively uses both the slow, reliable communications link and the fast, unreliable communications link. | 02-04-2010 |
20100020643 | System and methods for detecting shooter locations from an aircraft - The systems and methods described herein relate to an airborne shooter detection system having a plurality of sensors coupled to the body of an aircraft such as a helicopter. The system includes at least five sensors configured and arranged to disambiguate the location of a shooter. By measuring the arrival times of the shockwaves of projectiles at each of the sensors and determining the differences in the arrival times among sensors, the systems and methods may determine the location of one or more sources of the projectiles. A distance of at least ten meters separates two or more of the sensors. Such a separation is advantageous because it allows the system to disambiguate multiple shooters by resolving the curvature of the shockwave. | 01-28-2010 |
20100007658 | VOLUMETRIC IMAGE MOTION-BASED VISUALIZATION - Systems, apparatus, and methods for displaying volumetric data using motion-based visualization techniques are provided. An apparatus storing computer executable instructions to be executed by a processor, causing the processor to carryout out a method for displaying data with multiple graphical features visually representing portions of the data and to impart motion to a graphical feature relative to a remainder of the volumetric image to highlight the first graphical feature is provided. A method for displaying a volumetric image in which motion is used to highlight a graphical feature visually representing a portion of the volumetric image relative to the remainder of the image is provided. A system for displaying a volumetric image comprising a user interface, a display, a memory for storing graphical data, and a processor that displays a volumetric image with multiple graphical features of the data and imparts motion to a user-identified graphical feature relative to a remainder of the volumetric image to highlight the first graphical feature are provided. | 01-14-2010 |
20090312028 | SPECTRUM-ADAPTIVE NETWORKING - The present invention increases the available spectrum in a wireless network by sharing existing allocated (and in-use) portions of the RF spectrum in a manner that will minimize the probability of interfering with existing legacy users. The invention provides interference temperature-adaptive waveforms, and a variety of physical and media access control protocols for generating waveforms based on measurement and characterization of the local spectrum. The invention measures the local spectrum at a receiving node, generates an optimal waveform profile specifying transmission parameters that will water-fill unused spectrum up to an interference limit without causing harmful interference to primary and legacy transmitters using the same frequency bands, and enables simultaneous transmit and receive modes at a multiplicity of transceivers in a wireless network. The invention also provides closed loop feedback control between nodes, co-site interference management, intersymbol interference mitigation, wide sense stationary baseband signaling and modulation, and power limited signaling for avoiding detection and interception. | 12-17-2009 |
20090129316 | Systems and methods for adaptive routing in mobile ad-hoc networks and disruption tolerant networks - The systems and methods described herein include adaptive routing processes for packet-based wireless communication networks. This routing approach works both in MANETs (when a contemporaneous end-to-end path is available) and in DTNs (when a contemporaneous end to end path is not available, but one of formed over space and time). In particular, the methods include adaptively selecting a routing process for transmitting a packet through a node in the network based on available information on the network topology and/or the contents of the packet. | 05-21-2009 |
20090125225 | VEHICLE ROUTING AND PATH PLANNING - A method of determining a path having an ordered set of waypoints to be visited by a mobile agent to accomplish a mission includes: producing candidate paths using a multi-objective optimization algorithm, subject to a path production heuristic; selecting a path from the candidate paths, subject to a path selection heuristic; instructing the mobile agent to move according to the selected path; modifying a maintained subset of the candidate paths to produce a new candidate path using the algorithm and subject to the path production heuristic; designating either the currently-selected path or the new candidate path as the newly-selected path, subject to the path selection heuristic; and instructing the mobile agent to move according to the newly-selected path. The method may further include iterating production of new candidate paths, either randomly or based on modifications of previous candidate paths, to continually update an operation plan for the mobile agent. | 05-14-2009 |
20090100053 | Semantic matching using predicate-argument structure - The invention relates to topic classification systems in which text intervals are represented as proposition trees. Free-text queries and candidate responses are transformed into proposition trees, and a particular candidate response can be matched to a free-text query by transforming the proposition trees of the free-text query into the proposition trees of the candidate responses. Because proposition trees are able to capture semantic information of text intervals, the topic classification system accounts for the relative importance of topic words, for paraphrases and re-wordings, and for omissions and additions. Redundancy of two text intervals can also be identified. | 04-16-2009 |
20090047925 | SYSTEM AND METHOD FOR EVALUATING ACCURACY OF AN AUTOMATIC LOCATION IDENTIFICATION SYSTEM | 02-19-2009 |
20080232344 | Systems and methods for synchronizing communication networks - In many aspects, the invention relates to systems and methods for synchronizing a communication network, particularly a slotted communication network, having a plurality of nodes. In slotted communication networks, the nodes are configured to transmit or receive data during selected time slots. During a selected time slot, each node transmits a synchronization message that is received by a neighboring node. The neighboring node adjusts its time slot boundary to coincide with the time of receipt of the synchronization message, thereby synchronizing each node with a neighboring node. Such systems and methods are energy efficient, accurate, fast, fault tolerant and easy to implement. | 09-25-2008 |
20080215309 | Extraction-Empowered machine translation - The invention relates to systems and methods for automatically translating documents from a first language to a second language. To carry out the translation of a document, elements of information are extracted from the document and are translated using one or more specialized translation processes. The remainder of the document is separately translated by a statistical translation process. The translated elements of information and the translated remainder are then merged into a final translated document. | 09-04-2008 |