Hrl Laboratories, LLC

Raytheon Company

Hughes Aircraft Company

Hughes Electronics Corporation

David B Shu

Lap-Wai Chow

William M Clark, Jr

David Aaron Schwartz

Yuri Owechko

Narayan Srinivasa

James G Nash

Yang Chen

Qin Jiang

Soheil Shams

Peter H Au

Cynthia E Daniell

William Clark, Jr

An apparatus and method for preventing information leakage attacks through a polarized cryptographic bus architecture. The polarized cryptographic bus architecture randomly changes the polarity of the target bit such that the leaked information cannot be consistently averaged to yield statistical key material. Further, to increase the prevention of information leakage attacks, a set of dual rails is used to write data to a given register bit.

Cryptographic bus architecture for the prevention of differential power analysis

The present invention relates to a hierarchical system for multi-objective shape control of variable stiffness structures. The system operates by initializing a hierarchical hybrid Gur-game controller that is affixed to a variable stiffness structure. The hierarchical hybrid Gur-game controller includes a hierarchy of Gur-games being utilized, at each level of the hierarchy, to control at least two angular rotations and at least one stiffness setting of the variable stiffness structure. The Gur-game controller is utilized to optimize variables, including angular rotations and stiffness settings of the variable stiffness structure to morph into a desired shape. Finally, the variable stiffness structure is morphed into the desired shape according to the optimized angular rotation and stiffness settings.

Hierarchical system for multi-objective shape control of variable stiffness structures

An apparatus and method for preventing information leakage attacks that utilize timeline alignment. The apparatus and method inserts a random number of instructions into an encryption algorithm such that the leaked information can not be aligned in time to allow an attacker to break the encryption.

Cryptographic architecture with instruction masking and other techniques for thwarting differential power analysis

Cryptographic architecture with random instruction masking to thwart differential power analysis

The present invention relates to a valuation-based learning system. The system is configured to receive a plurality of inputs, each input being input evidence corresponding to a variable in a Dempster-Shafer Reasoning System. The Dempster-Shafer Reasoning System is a network of interconnected nodes, with each node representing a variable that is representative of a characteristic of a problem domain. A discount weight is then optimized for assigning to each of the inputs. A basic probability assignment (bpa) is generated using the Dempster-Shafer Reasoning System, and where the bpa is an output for use in determining a solution of the problem domain. Finally, a solution to the problem domain is determined using the bpa.

Valuation-based learning system

Cryptographic CPU architecture with random instruction masking to thwart differential power analysis

The present invention relates to an anti-tamper system. The system comprises a circuit pathway having a unique, programmable, evolved chip in the pathway. The chip has logic units with transistors having fixed parameters. The chip has route lengths and connections between the logic units that are formed in an evolutionary formation of the chip such that the evolutionary formation changes the route lengths and connections between the logic units to create feedback and delay changes. The changes in the route lengths and connections cause the transistors to operate in intermediate analog states. In chip formation, a search and optimization algorithm explores, in a clock-less environment, various route lengths and connections such that the chip can behave in a desired fashion to provide a desired output for a given input. Through use of the evolved chip, the anti-tamper system provides a security benefit of utilizing a unique chip in its pathway.

Anti-tamper system

Separating mixed signals includes receiving the mixed signals from signal sources transmitting from a number of cells. A signal source is operable to transmit a source signal, and a mixed signal comprises at least a subset of the source signals. A complex mixing matrix is established from the mixed signals. The complex mixing matrix describes mixing the source signals to yield the mixed signals. The number of cells is estimated from the mixed signals. The mixed signals are separated using the complex mixing matrix and the estimated number of cells.

Separating mixed signals in a cellular environment

The present invention describes a new QR enclosing voting scheme that allows the extraction of base signatures of objects using a shortest path QR algorithm, providing a probability distribution measuring the occurrence of each random projection base of the object under consideration. The method is very effective in extracting the overall base signatures of a given class of objects. The novelty of this approach is that it is not tailored to the nature of the objects, thus generally applicable, and unmanned. Random projections (RP) have been a powerful tool to reduce the dimensionality of an object while preserving class separation. The inventive voting scheme, after RP, further reduces the dimensionality to no more than the number of the training objects.

Target recognition system and method with unknown target rejection

A method of separating mixed wireless signals is provided. The method includes receiving, at an antenna comprising a first quantity of antenna elements, mixed signals comprising a mixture of source signals communicated from a second quantity of wireless signal sources, and separating the mixed signals to estimate the source signals. The second quantity is greater than the first quantity, and the source signals communicated from at least one of the wireless signal sources are received at the antenna as complex signals.

System and method for separating signals received by an overloaded antenna array

A method for classification of a target object having a periphery comprises the steps of: selecting a plurality of random first chords Dacross the periphery of the target object; For each of the pairs, the second chords are orthogonal to the first chords, and the second chords share a point with the first chords and the periphery.

Recognition algorithm for the unknown target rejection based on shape statistics obtained from orthogonal distance function

A method, apparatus, and computer program product are provided for calculating an indicator of operator distraction for an equipment operator. First, distraction-correlated indicator information from devices around an operator is received. Next, a distraction level is estimated. Subsequently, an output is produced indicative of the distraction level to facilitate a threat assessment decision. Additional operations may include grouping information into complex task types comprising sets of related activities. Next, an elapsed time is determined since the start of the first activity in a complex task. The delay since the most recent activity in the complex task is compared with a minimum task quiescent period. When the delay exceeds the minimum task quiescent period, the elapsed time and the delay are reset. Also, during the performance of a complex task, the type and the elapsed time of the complex task are correlated with other information to facilitate a threat assessment decision.

Method and apparatus for calculating an operator distraction level

A signal is generated at a source and a first portion of the signal is processed locally by a processor This first portion of the signal that is locally processed, is comprised of data, which would be prone to noise masking or loss, in its transition from the source to a non-local analog-to-digital converter in the absence of a processing step. The remaining portion of the signal is converted at a non-local analog-to-digital converter , to produce a first digital signal The processed signal is converted non-locally at a non-local converter to produce a second digital signal finally the first digital signal is combined with the second digital signal to produce a digital output signal

Extended precision pixel

In a SIMD architecture having a two dimensional array of processing elements, where a controller broadcasts instructions to all processing elements in the array, a dynamically reconfigurable switching means useful to connect four of the processing elements in the array into a group in accordance with either the broadcast instruction of the controller or a special communication instruction held in one processing element of the group, the switch includes at least one dataline connected to each processing element in the group. A multiplexer is connected to each data line and to the controller and to a configuration register. It is adapted to load the special communication instruction from the one processing element in the group into a configuration register and to operate in accord with either the broadcast instruction from the controller or the contents of the configuration register to select one of the four data lines as a source of data and applying the data therefrom to a source output port. A demultiplexer is connected to each data line and to the controller and to said configuration register, and to the source output port of the multiplexer means, and adapted to operate in accord with either the broadcast instruction from the controller or the contents of the configuration register to select one of the four data lines as a source of data and applying the data therefrom to a selected data line. The switch also acts to connect processing elements that cross chip partitions forming the processor array. Up to four such switches can be used to connect a group of four processing elements.

Independently non-homogeneously dynamically reconfigurable two

A system and method for transmitting a video object used in generating a plurality of frames of a video sequence over a limited bandwidth channel to reduce latency associated therewith includes separating the video object into a plurality of segments each having a size based in part on the limited bandwidth of the channel, identifying and transmitting at least one of the segments necessary for generation of an initial frame of the video sequence, and generating and displaying one or more of the initial frames based on the segment. The system and method may also intentionally reduce resolution of one or more segments to meet timing requirements association with generation and display of the at least one frame of a video sequence. In this situation, a residual representation of the segment is transmitted when bandwidth is available to improve resolution and quality of the originally transmitted segment and object resulting therefrom.

Growing community of inventors

West Hills, CA, United States of America

David B Shu