Electrical Analog Simulator Patents (Class 703/3)
  • Patent number: 7319946
    Abstract: New Frequency dependent RLC extraction and modeling for on chip integrity and noise verification employs: A) 2D scan line algorithm for the collection of adjacent signal and power conductor coordinates; B) In core pair-wise frequency Dependent RL extraction; C) In core equivalent circuit synthesis; D) caching and partitioning RL extraction techniques for run time efficiency; and E) Techniques for synthesizing stable circuits to represent frequency dependent RL circuits for non-mono tonic R12.
    Type: Grant
    Filed: October 21, 2002
    Date of Patent: January 15, 2008
    Assignee: International Business Machines Corporation
    Inventors: Michael A. Bowen, Alina Deutsch, Gerard V. Kopcsay, Byron L. Krauter, Barry J. Rubin, Howard H. Smith, David J. Widiger
  • Patent number: 7288921
    Abstract: An economic dispatch program optimally allocates load demand specifying real power and reactive power to be generated by a power plant among various power generators in a manner so that each of the power generators are operated within its optimal operating space as defined by a reactive capability curve. Allocating a power demand with consideration of the reactive capability curves of the power generators results in optimal generation of real power and reactive power as specified by the load demand. Alternatively, the economic dispatch program allocates load demand specifying real power and reactive power to be delivered by a power grid among various power plants wherein one or more of the various power plants have capacity limits exhibited by reactive capability curves.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: October 30, 2007
    Assignee: Emerson Process Management Power & Water Solutions, Inc.
    Inventors: Frederick C. Huff, Xu Cheng, Peter N. Francino
  • Patent number: 7284008
    Abstract: A technique is disclosed for generating markup information to be displayed on a client computer system. The client system includes memory configured to store at least one update file which comprises keyword information relating to keywords suitable for markup. In one implementation, the update file is generated at a remote server system and downloaded to the client system. When a new document (e.g. a web page) is displayed on the client system to an end user, selected context associated from the document is analyzed for selected keywords. In a specific implementation, the selected keyword information is provided by an entity other than the end user. Using the selected keyword information, specific context in the document is selected to be marked up. According to a specific embodiment, the selection of the document context to be marked up may be performed at the client system.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: October 16, 2007
    Assignee: Kontera Technologies, Inc.
    Inventors: Assaf Henkin, Yoav Shaham, Henit Vitos, Benny Friedman
  • Patent number: 7266488
    Abstract: A technique for performing signal integrity analysis of a system includes providing a stimulus pattern and a model of the system and performing analog simulation of the model utilizing the stimulus pattern. The stimulus pattern includes sequences of signal transitions with associated transition times and the sequences of signal transitions conform to a bus protocol and the associated transition times are according to characteristics of the system. The stimulus pattern is generated by initializing each of the sequences of signal transitions to an initial signal value and the associated transition times to an initial time, generating subsequent signal values and subsequent transition times by applying protocol rules and calculating timing adjustments for each of a list of transactions; the subsequent signal values and subsequent transition times to be added to the sequences of signal transitions.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: September 4, 2007
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Douglas E. Wallace, Jr., Jonathan P. Dowling
  • Patent number: 7219069
    Abstract: Users desire to normalize raw data from meter load profile acquisition systems against some attributes (i.e., properties) of a facility, such as the number of employees. The facility area, and the number of products produced would be additional potential attributes for consideration. Normalization involves dividing a load profile channel such as kiloWatt hours by a determined facility attribute to obtain a new data set, for example, such as “kWh/Employee.” The present modelization allows a user to define a set of attributes and manage their value over time to refine the facility model. Keeping track of the attributes over time provides increased accuracy in the resulting data. The model is managed by a user interface which can be refined over time as the facility evolves. Data comprising sets of attributes over time may persist within the system for later retrieval.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: May 15, 2007
    Assignee: Schlumberger Resource Management Services, Inc.
    Inventor: Christophe Fouquet
  • Patent number: 7203631
    Abstract: Briefly, a system and a method of formal verification and failure analysis and rectification of models or designs, e.g., VLSI designs, of processors, circuits and logical systems. Embodiments of the system may include a multi-value annotation scheme for annotating different types of values of signals, and a post-annotation scheme for further analysis based on the annotated values. Some embodiments of the invention may optionally include a generator of counter-examples of a given length.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: April 10, 2007
    Assignee: Intel Corporation
    Inventors: Ranan Fraer, Osnat Weissberg, Amitai Irron, Gila Kamhi, Marcelo Glusman, Sela Mador-Haim, Moshe Y. Vardi
  • Patent number: 7200534
    Abstract: In one embodiment, a method for designing a radiographic imaging system includes 1) receiving a number of design constraints for the system, and then 2) in response to the constraints, generating a plurality of radiographic imaging system designs, each having a different number of radiographic sources, and each requiring a different number of nominal scan passes to image a specimen region of interest. Designs having a greater number of radiographic sources have sets of translated radiographic detection areas sharing at least some coincident, nominal scan passes as compared to radiographic imaging system designs having fewer radiographic sources. Each set of translated radiographic detection areas is associated with a radiographic source that is replicated and translated with respect to a radiographic source that forms part of a radiographic imaging system design having fewer radiographic sources. Related systems and apparatus are also disclosed.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: April 3, 2007
    Assignee: Agilent Technologies, Inc.
    Inventors: John M. Heumann, Gerald L. Meyer
  • Patent number: 7200500
    Abstract: A method for determining an equivalent impedance of a transmission section of an electrical network, includes representing the transmission section as having at least two interfaces with other sections of the network. For each interface, a voltage phasor and a current phasor flowing through the interface are determined from simultaneously made measurements at the interfaces. From the phasors, the equivalent impedance is calculated. The required simultaneousness of the phasor measurements is achieved by means of Phasor Measurement Units (PMUs) that are synchronized via the Global Positioning System (GPS).
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: April 3, 2007
    Assignee: ABB Research Ltd
    Inventors: Mats Larsson, Christian Rehtanz, Marek Zima
  • Patent number: 7194394
    Abstract: A technique for detecting and correcting inaccuracies in curve-fitted models. Humps and dips in a curve-fitted model are identified. An analysis is performed on the humps and dips to determine if they are large enough to warrant correction. If so, then the source of the simulation and/or empirical data is modified to taking corrective action to improve the curve fit between the edge point and the next actual simulation and/or empirical data point.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: March 20, 2007
    Assignee: International Business Machines Corporation
    Inventors: Barry Lee Dorfman, Thomas Edward Rosser
  • Patent number: 7158923
    Abstract: A method of integrating product information management with vehicle design includes the steps of selecting a vehicle program requirement from a library stored in a memory of a computer system, wherein the library is accessed through an information portal on the computer system. The method also includes the steps of selecting an information database containing information related to the design of the vehicle from the library, wherein the information database is accessed through the information portal, and determining if the information from the information database correlates with the program requirement. The method further includes the steps of using the information from the information database in the design of the vehicle, if the information from the information database correlates with the program requirement.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: January 2, 2007
    Assignee: Ford Global Technologies, LLC
    Inventors: Krishna Murthy, Michael E. Stoeckle, Devang Desai
  • Patent number: 7143016
    Abstract: Control systems and methodologies are disclosed for controlling a process having one or more motorized pumps and an associated motor drives, which comprise selecting a desired operating point within an allowable range of operation about a process setpoint according to performance characteristics associated with a plurality of components in the process, and controlling the system according to the desired operating point. The control system comprises a motor drive providing electrical power to a motor in a controlled fashion according to a control signal, and a controller providing the control signal to the motor drive according to a desired operating point within an allowable range of operation about a process setpoint. The controller selects the desired operating point according to one or more performance characteristics or criteria associated with a plurality of components in the process, such as cost, throughput, lifetime, or the like.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: November 28, 2006
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Frederick M. Discenzo, Dukki Chung, Joseph K. Zevchek
  • Patent number: 7136880
    Abstract: The present invention provides a method and apparatus of compiling and providing business data in a distributed computer system, preferably the Internet or any other type of computer linked network system. The present invention also provides a computer program product that contains business data compiled from files containing business data located in a distributed computer system. The present invention to provide a cost-effective method for automatically compiling a business data as well as an automated method for refreshing business data so as to keep it current. The advantage of the present invention is that it enables one to compile business data from files in a distributed computer system in a cost effective and time effective manner taking advantage of the large number of data that is available in a distributed computer system. Another advantage is that the present invention enables one to quickly update business data to stay current.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: November 14, 2006
    Assignee: Market Models, Inc.
    Inventors: Jeffrey K. Wilkins, Prashant P. Devdhar
  • Patent number: 7136797
    Abstract: The apparatus comprises the syntax checking section that checks the syntax of a device model according to a check table showing the relation between the syntax of the device model showing electrical characteristics of a semiconductor device and an amendment when deviating from the syntax. The syntax error amendment creating section corrects the device model according to a corresponding amendment when a description deviating from the syntax is checked by the syntax checking section.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: November 14, 2006
    Assignee: Fujitsu Limited
    Inventors: Masaki Tosaka, Toshio Karino, Tatsuo Koizumi, Jiro Yoneda, Megumi Nagata, Hiroyuki Orihara, Hikoyuki Kawata
  • Patent number: 7133815
    Abstract: In the control of spacecraft, thrusters must generate a commanded force or torque that is computed from the control algorithms in order to maintain a certain attitude or orbit. In general, there is an infinite number of solutions as to how the thrusters are fired in order to achieve the commanded value. However, additional imposed constraints on the mass flow allow only a small subset of those solutions to be feasible. By way of example, two constraints are considered in this invention: first, the mass flow of each thruster must exceed a minimum value and second, the total mass flow of all thrusters for any generated force/torque must be constant. If only a non-feasible solution is found, known methods turn it into a feasible one by reducing the commanded force/torque until the constraints are met. Reducing the commanded force/torque is, however, a disadvantage because the performance may decrease and even lead to instability of the closed loop system.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: November 7, 2006
    Assignee: Astrium Limited
    Inventor: Peter Zentgraf
  • Patent number: 7110835
    Abstract: Graphic displays, which display information about process elements and the manner in which these elements are connected within a process, process modules, which simulate the operation of the elements depicted within the graphic displays and control modules, which perform on-line control activities within a process, may be communicatively connected together to provide a combined control, simulation and display environment that enables enhanced control, simulation and display activities. Smart process objects, which have both graphical and simulation elements, may used to create one or more graphic displays and one or more process simulation modules, each having elements which may communicate with one another to share data between the graphic displays and the process modules.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: September 19, 2006
    Assignee: Fisher-Rosemount Systems, Inc.
    Inventors: Terrence Blevins, Mark Nixon, Michael Lucas, Arthur Webb, Ken Beoughter
  • Patent number: 7099721
    Abstract: A development tool (2) includes a plurality of measuring tools (71) to (76) and an industrial process simulation device (60). The simulation device (60) simulates a whole industrial scale bioprocess in order to obtain acceptable operating parameters for the industrial scale bioprocess. The measuring tools (71) to (76) enable various significant properties of the biomaterial to be measured and evaluated using only a small test quantity of the biomaterial.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: August 29, 2006
    Assignee: University College London
    Inventors: Peter Dunnill, Mike Hoare, Nigel Titchener-Hooker
  • Patent number: 7096168
    Abstract: In order to simulate the input or output load of an analog circuit, the output of the analog circuit is connected to the input of a driver stage. A measuring element is placed between the input of the driver stage and the reference potential, in order to record the output voltage of the analog circuit. A digital simulator controls a controllable transfer impedance, arranged between the output of the driver stage and the reference potential, in order to simulate various output loads. An alternative is to connect the output of the driver stage to the input of the analog circuit. The input of the driver stage has a shunt connection of a controllable current or voltage source, a first resistance and a first capacitance. The digital simulator controls the controllable current or voltage source, in order to simulate various output loads. The driver stage is switched off when appropriate.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: August 22, 2006
    Assignee: Infineon Technologies AG
    Inventor: Wolfgang Scherr
  • Patent number: 7050957
    Abstract: A process and method for projection beam lithography which utilizes an estimator, such as a Kalman filter to control electron beam placement. The Kalman filter receives predictive information from a model and measurement information from a projection electron beam lithography tool and compensates for factors which cause beam placement error such as wafer heating and beam drift. The process and method may also utilize an adaptive Kalman filter to control electron beam placement. The adaptive Kalman filter receives predictive information from a number of models and measurement information from a projection electron beam lithography tool and compensates for factors which cause beam placement error such as heating and beam drift. The Kalman filter may be implemented such that real-time process control may be achieved.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: May 23, 2006
    Assignees: Agere Systems Inc., Elith LLC
    Inventor: Stuart T. Stanton
  • Patent number: 7047172
    Abstract: According to an electric network simulating method, element cells representing electric functions of a plurality of circuit elements and connection pipes representing wiring lines for connecting the circuit elements are defined. A current is defined as the number of particles moving through the connection pipe per unit time, and a voltage is defined as the number of particles present in the connection pipe. A rule for expressing the electric function of each circuit element in accordance the state of the connection pipe is set beforehand in units of element cells. The particles are transferred between the element cell and the connection pipe in accordance with the rule. The state of the electric network is simulated in accordance with the number of particles passing through the connection pipe per unit time and the number of particles present in the connection pipe.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: May 16, 2006
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Yutaka Usami, Takashi Kobayashi
  • Patent number: 7047173
    Abstract: A method for modeling analog signals that may comprise (A) detecting one or more attributed analog signals and (B) modeling the attributed analog signals by adding a signature to each of the one or more attributed analog signals.
    Type: Grant
    Filed: August 3, 2000
    Date of Patent: May 16, 2006
    Assignee: Cypress Semiconductor Corp.
    Inventors: Steven P. Larky, Terry D. Little
  • Patent number: 7027853
    Abstract: An improved technique is described for acquiring MR image data such as needed for FSE-based Dixon imaging techniques. A gradient-induced echo shift is produced in the pulse sequences by a small gradient applied along the readout axis prior to a readout pulse. When necessary, another small pulse is applied along the readout axis, equal in area and opposite in polarity to the first, to compensate for the shifting effect. Similar pulses are applied for each acquisition window. While data with non-zero phase shifts between water and fat signals are collected as fractional echoes, no increase in echo spacing is necessary with the modified acquisition strategy. Images corresponding to different phase shifts are reconstructed using phase-sensitive partial Fourier reconstruction algorithms whenever necessary. These images are then used to separate different chemical species (such as water and fat) in the object to be imaged.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: April 11, 2006
    Assignee: Board of Regents, The University of Texas System
    Inventor: Jingfei Ma
  • Patent number: 7023859
    Abstract: A Trie-type associative memory is used for an analysis of binary strings situated at defined locations of data packets. An analysis tree is established, which comprises stages associated with the locations, and paths each arriving at an action attributed on the basis of the values of the binary strings read from a data packet. The tree is then transcribed into the Trie memory.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: April 4, 2006
    Assignee: France Telecom
    Inventors: Olivier Paul, Sylvain Gombault, Maryline Laurent Maknavicius, Joël Lattmann, Christian Duret, Hervé Guesdon
  • Patent number: 6985837
    Abstract: A system for presenting meteorological information uses a browser interface to access massive amounts of weather-related data in the form of images stored on the server-side of the system. A user having a common browser on a Web client accesses the server-side information to selectively assemble weather-related data on multiple overlays of images and/or graphics into one simultaneous presentation on a Web page. The different overlays are normalized with respect to time and space, and a user can separately generate graphically miniaturized presentations of weather-related data for saving and subsequently recalling each presentation, wherein each presentation is displayed with current relativized data. The user can also select or customize derived variables to be distinctively displayed as part of a presentation.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: January 10, 2006
    Inventors: Dennis A. Moon, Neil R. Lincoln, Rex Filstrup, Rolf D. Miller, Eric Christeson, Ningsheng Huang, Michael T. C. Johnson, Brian Lincoln, John R. Makosky, Brian K. Smith, Elizabeth Wiethoff
  • Patent number: 6978229
    Abstract: A computer implemented method for statistical modeling and simulation of the impact of global variation and local mismatch on the performance of integrated circuits, comprises the steps of: estimating a representation of component mismatch from device performance measurements in a form suitable for circuit simulation; reducing the complexity of statistical simulation by performing a first level principal component or principal factor decomposition of global variation, including screening; further reducing the complexity of statistical simulation by performing a second level principal component decomposition including screening for each factor retained in the first level principal component decomposition step to represent local mismatch; and performing statistical simulation with the joint representation of global variation and local mismatch obtained in the second level principal component decomposition step.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: December 20, 2005
    Assignee: PDF Solutions, Inc.
    Inventors: Sharad Saxena, Carlo Guardiani, Philip D. Schumaker, Patrick D. McNamara, Dale Coder
  • Patent number: 6970860
    Abstract: A multimedia object retrieval and annotation system integrates an annotation process with object retrieval and relevance feedback processes. The annotation process annotates multimedia objects, such as digital images, with semantically relevant keywords. The annotation process is performed in background, hidden from the user, as the user conducts normal searches. The annotation process is “semi-automatic” in that it utilizes both keyword-based information retrieval and content-based image retrieval techniques to automatically search for multimedia objects, and then encourages users to provide feedback on the retrieved objects. The user identifies objects as either relevant or irrelevant to the query keywords and based on this feedback, the system automatically annotates the objects with semantically relevant keywords and/or updates associations between the keywords and objects. As the retrieval-feedback-annotation cycle is repeated, the annotation coverage and accuracy of future searches continues to improve.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: November 29, 2005
    Assignee: Microsoft Corporation
    Inventors: Wen-Yin Liu, Hong-Jiang Zhang
  • Patent number: 6941253
    Abstract: Embodiments of the present invention include a control code read-out system in which a control code for access restriction corresponding to a playback control code of a recording medium is held in a playback apparatus, and the control code held in the playback apparatus is read-out when the recording medium is played back, and a comparison between the playback control code of the recording medium to be played back and the control code stored in the playback apparatus being made, and playback of the recording medium being performed only when there is coincidence between the two control codes. One embodiment of the system comprises a first portion for encrypting the control code of the playback apparatus and storing an encrypted control code in a control code storage portion, a second portion for read-out the encrypted control code from the control code storage portion, and decrypting, when playing back the recording medium.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: September 6, 2005
    Assignee: NEC Corporation
    Inventor: Takuya Morishita
  • Patent number: 6915267
    Abstract: The present invention encompasses a control system and method for systems of producing and consuming units. The method of the invention includes the steps of setting each producing unit to have an output responsive to an analog signal representative of a market price, and connecting each producing unit to a marketwire, with the changes in the analog signal on the marketwire representing changes in the market price resulting from inputs from the consuming units and the output response of each producing unit.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: July 5, 2005
    Assignee: Xerox Corporation
    Inventors: Warren B. Jackson, David K. Biegelsen, Tad H. Hogg, Chee We Ng, Andrew A. Berlin, Koenraad F. Van Schuylenbergh, Carlos Mochon
  • Patent number: 6904394
    Abstract: A method and apparatus is directed to an integration of a computer modeling process in which a Computer Numerically Controlled (CNC) machine is used for manufacture or rapid prototyping. As a result, conventional processes that require a level of human interface during the intermediate stages are minimized or otherwise removed. Intermediate stages include Computer Aided Design(CAD) stage, Computer Aided Engineering (CAE) stage, Computer Aided Manufacturing (CAM) stage and Computer Numerical Controlled (CNC) machine stage. By using Non-Uniform Rational B-Splines (NURBS), a CAD data file is converted for direct input to the CNC machine that is able to read NURBS instruction codes.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: June 7, 2005
    Assignee: Delta Search Labs, Inc.
    Inventor: Syed Kamal H. Jaffrey
  • Patent number: 6868373
    Abstract: During an initialization of a simulation of the behavior of an industrial plant containing a number of components, a particularly reliable parameter input is intended to be ensured with a particularly low outlay. To this end, in an initialization method provision is made, according to the invention, that for each component a component type is identified in each case and, in circuit terms, is characterized by a number of inputs and by a number of outputs for one parameter in each case. The initialization method uses a stored component-type-specific signal flow structure for the parameter of each output for specifying whether a parameter input is requested for a component.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: March 15, 2005
    Assignee: Siemens Aktiengesellschaft
    Inventor: Thomas Fehn
  • Publication number: 20040260529
    Abstract: A parallel computing method by using a parallel computer having a plurality of processors is provided, wherein when a 2-electron integration is transformed from an atomic-orbital base (rs|tu) to a molecular-orbital base (ab|cd), indexes r and s of an atomic orbital to be calculated are designated for the plurality of processors and each of the plurality of processors performs processing for all combinations of designated indexes R and S, and indexes t and u of the atomic orbital to be calculated. Subsequently, the grain sizes are equalized, many commodity processors can be connected with high performance, and the cost of a high-speed operation computer reduces. Further, the computer can obtain a large main-memory area, as a whole, through the use of inexpensive local memories.
    Type: Application
    Filed: August 17, 2004
    Publication date: December 23, 2004
    Inventors: Toshikazu Takada, Kazuto Nakata, Tadashi Murase, Toshihiro Sakuma
  • Patent number: 6826517
    Abstract: An electronic device simulator includes a three-dimensional lumped device model, a three-dimensional visco-elastic process simulation model and a material design model that are interlinked with each other. The three-dimensional lumped device element model comprises a Poisson's equation model, an electron continuity equation model, a hole continuity equation model, a Maxwell's equations model, an eddy current equation model, and an Ohm's law equation model. The simulator accounts for the three dimensional characteristics of the circuit to determine circuit performance.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: November 30, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Takako Okada
  • Patent number: 6768976
    Abstract: When an electric current flowing through an electronic appliance is simulated by solving simultaneous linear equations defined depending on an analytic frequency, the simultaneous linear equations are solved in the direct method using a frequency other than the frequencies on both ends of an analytic frequency area as an analysis target, and the simultaneous linear equations are solved in the iterative method while transforming the simultaneous linear equations using the coefficient matrix analyzed in the direct method on the frequencies other than the above described frequency defined as the analysis target.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: July 27, 2004
    Assignee: Fujitsu Limited
    Inventors: Katsumi Homma, Makoto Mukai, Yoshirou Tanaka
  • Patent number: 6760692
    Abstract: The algorithm used for training a state machine has been disclosed in another application. The objective of this application is to reduce this theoretical framework to a more concrete structure. The structure disclosed involves the use of nodes to perform the function of state equations and calculating the value of particular state variables. After the nodes where classified as either Lead-Type Nodes or Non-Lead-Type Nodes, this classification was used to define a structure of nodes to build a State Machine Block. This State Machine Block model also restricts the location of system inputs and system outputs. The internal structure of a node is discussed with the components being a Function Block and a Complex Impedance Network. The Function Block is typically a multivariable power series and the Complex Impedance Network is a linear circuit of resistors and capacitors. Such a Complex Impedance Network is referred to as an Electrical Component Model.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: July 6, 2004
    Inventor: Ralph E. Rose
  • Patent number: 6741956
    Abstract: The present invention is directed to an analog, oligomer-based method for determining a mathematical result of carrying out an operation of matrix algebra on input data. The method comprises representing at least one m-component vector V=&Sgr;iViei by a set of single-stranded oligomers Ei and Ei which are in 1:1 correspondence with the basis vectors ei, i=1, 2, . . . , m in an abstract m-dimensional vector space. A composition comprising at least one set of oligomers Ei and Ei representing the components of a vector is obtained as input date and is subjected to at least one physical or chemical treatment having an effect on the oligomers that is an analog representation of an operation of matrix algebra. The method can be used to represent the operations of a neural network; for example, to produce a content-addressable memory, or a multilayer perceptron.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: May 25, 2004
    Assignee: Lucent Technologies Inc.
    Inventors: Allen P. Mills, Jr., Bernard Yurke, Philip M. Platzman
  • Patent number: 6728903
    Abstract: A memory test system of the present invention comprises a plurality of memory test units 90A, 90B, . . . , which test memory devices 52 to 56, a host computer (EWS) 10 which evaluates test results of the memory devices 52 to 56, and a common memory unit 12 which connects a plurality of the memory test units 90A, 90B, . . . , to the host computer (EWS) 10. The common memory unit has an interrupt controller (INT CNT) 22. In each of the memory test units 90, a slave processor (MCPU) 40 and a memory for the slave processor (MEM) 14 are provided. MCPU 40 reads memory test results and responses of local processors (RCPU) 42 to 46 which are stored in RMEMs 32 and transfers read data to SMEM 16. MCPU 40 generates an interrupt signal. When all MCPUs 40 generate interrupt signals, INT CNT 22 generates an interrupt signal INT to the EWS 10. The EWS 10 may perform several functions based on the interrupt signal INT.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: April 27, 2004
    Assignee: Advantest Corporation
    Inventor: Yoshiaki Kato
  • Patent number: 6714936
    Abstract: A computer implemented method of storing, manipulating, assessing, and displaying data and its relationships, and a computer system (with memory) programmed to implement such method. The data are stored as linked nodes, and can be visualized as a displayed sea of node representations. Interactions with the user organize the data from a defined, and then refined, point of view, with relevant data preferably brought to the user's attention by smooth changes in the displayed appearance of the data. The data (stored as linked nodes) can be queried by establishing a first point of view and displaying representations of the nodes as a sea of node representations whose point of view is the first point of view, and responding to a command (which determines a query) by displaying a changed sea of node representations which emphasizes information having greater relevance, and deemphasizes information having less relevance, to the query.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: March 30, 2004
    Inventor: Rocky Harry W. Nevin, III
  • Publication number: 20040044505
    Abstract: A method for calculating a risk factor associated with a security is provided and includes the steps of tabulating data pertaining to the security; calculating a plurality equity style factors; calculating equity industry factors and orthogonalizing the risk factors.
    Type: Application
    Filed: February 25, 2003
    Publication date: March 4, 2004
    Inventor: Richard Horwitz
  • Patent number: 6662149
    Abstract: A process for efficiently computing moments in an interconnected circuit begins by partitioning the circuit into sets of line-like two-port circuits. Next, capacitors are converted to equivalent current sources and inductors are converted to equivalent voltage sources. From a first port, any connected voltage source which is present in line is added to the port voltage source. Then, that voltage source combined with the connected resistor and the Thevenin equivalent circuit is converted to a Norton equivalent circuit. The current source created from the conversion is added to a current source in the circuit and the Norton equivalent circuit is converted back to a Thevenin equivalent circuit. The process is recursively performed until the opposite port is reached. The moment is then computed from the final Thevenin equivalent circuit by using the voltage and current at the port. The Thevenin-Norton-Thevenin recursive process is then repeated for the opposite port.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: December 9, 2003
    Assignee: International Business Machines Corporation
    Inventors: Anirudh Devgan, Peter Redmond O'Brien
  • Patent number: 6647360
    Abstract: Methods and apparatus for scrolling database records, particularly in a client-server computing system, are disclosed. A database holds records, accessible by a server, that each include a unique identifier. A client requests the server to retrieve a set of database records. Records are retrieved from the database and stored on the server. The server determines an upper context token and a lower context token corresponding to the end records for a subset of those records. The upper and lower context tokens include a reference to the respective unique identifier. The first subset records is passed to the client for display. The client then makes a scrolling request by a previous or next subset of data, and passes the relevant upper or lower context token to the server.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: November 11, 2003
    Assignee: International Business Machines Corporation
    Inventors: Stephen Thomas Graham, James Leonard Dunwoody, John Stanley Spence, Nigel James Ramsay
  • Patent number: 6615165
    Abstract: A power and communications connection arrangement for a miniature, unmanned aircraft having data handling capability. The aircraft has a microprocessor for managing flight control, a GPS receiver, a communications radio frequency transceiver, and data handling apparatus. The latter may be any of a sensor for gathering environmental data, sensing aircraft altitude or attitude, a data relay station, or any combination of these. The data handling apparatus is part of a removable module mounted to and detachable from the aircraft. The connection arrangement includes stationary power and communications terminals fixed to the module, and corresponding free power and data cables completing respective power circuits and communications links within the aircraft. In the preferred embodiment, the microprocessor, at least one sensor, and a battery pack are located in the module, and a radio transceiver, a GPS receiver, controls such as rudder and elevator, and other sensors are located in the airframe.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: September 2, 2003
    Inventor: Ernest A. Carroll
  • Patent number: 6604102
    Abstract: The SQL compiler and SQL executor in a database management system are extended to process queries requiring streaming mode processing of data stored in a table. A scan operator performs table access functions during execution of the streaming mode query. The scan operator first performs an initial scan to access rows in a specified database table, and then performs a delta scan to access new rows added to the table, as well as rows modified by other queries. The scan operator continues to process new data added to the table until the initiating user or application closes the associated cursor. A set of data structures are provided to keep track of active scan operators, including a session control block that includes fields for keeping track of whether the scan operator is performing an initial scan or a delta scan. The session control block also includes, for streaming mode scan operators, a delta scan list of new and modified rows to be processed in the delta scan.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: August 5, 2003
    Assignee: Hewlett-Packard Development Company, LP.
    Inventors: Johannes Klein, Robbert C. Van der Linden, Raj K. Rathee, Hansjorg Zeller
  • Patent number: 6571203
    Abstract: In a CAD-data management system for managing a plurality of types of CAD data: a plurality of CAD-data processing units are capable of processing a plurality of predetermined types of CAD data, respectively: a processing-request generation unit receives a manipulation input designating CAD data of one of the plurality of types, and generates a processing request corresponding to the manipulation input and being directed to one of the plurality of CAD-data processing units which is capable of processing CAD data of the one of the plurality of types; and a linkage processing unit executes processing defined in a function in conjunction with the one of the plurality of CAD-data processing units, where the function is predefined corresponding to the processing request.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: May 27, 2003
    Assignee: Fujitsu Limited
    Inventor: Makoto Fujieda
  • Patent number: 6549918
    Abstract: A software layer (filter driver) residing between software components or application programs running locally or on a client across a network and a persistent store of an operating system provides on-the-fly conversions of persistent information formats. The filter driver determines which format a program expects, and dynamically converts the information from its storage format to the format expected by the program. Conversion includes both data format conversion, and conversion of access semantics. Loadable conversion modules are provided for converting application specific formats due to the potential large number of such formats which can be encountered. The filter driver may change the format that information is stored in based on access history or other system requirements.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: April 15, 2003
    Assignee: Microsoft Corporation
    Inventors: David Bradley Probert, Jr., Chao-chia Liu
  • Patent number: 6546363
    Abstract: An apparatus is provided for diagnosing the state of health of a vehicle and for providing the operator of the vehicle with a substantially real-time indication of the efficiency of the vehicle in performing an assigned task with respect to a predetermined goal. A processor on-board the vehicle monitors sensors that provide information regarding the state of health of the vehicle and the amount of work the vehicle has done. In response to anomalies in the data from the sensors, the processor records information that describes events leading up to the occurrence of the anomaly for later analysis that can be used to diagnose the cause of the anomaly. The sensors are also used to prompt the operator of the vehicle to operate the vehicle at optimum efficiency.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: April 8, 2003
    Inventor: LeRoy G. Hagenbuch
  • Publication number: 20030065492
    Abstract: It provides a finite element method library which improves the reliability of a program using the finite element method as a library, and avoids calculation errors and an increase in convergence time due to programming errors. To this end, a library that describes a program process based on the finite element method is characterized in that a vector of a vector space spanned by basis functions of the finite element method, and a dual vector of a dual vector space defined by a metric derived from an inner product which is determined by the square integrations of the basis functions, are defined as different abstract data types.
    Type: Application
    Filed: July 11, 2002
    Publication date: April 3, 2003
    Inventors: Shigeki Matsutani, Akira Asai
  • Patent number: 6522997
    Abstract: The method includes the steps of: calculating a direction-dependent distribution of ejected particles from a target, dividing a range of the vertical angle &thgr;, with respect to a direction perpendicular to the surface of the target, into sections of an equal interval, counting a number of the ejected particles for every section of the vertical angle &thgr;, and calculating a vertical distribution function by interpolating the counted numbers of the ejected particles as a function of the vertical angle &thgr;.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: February 18, 2003
    Assignee: NEC Corporation
    Inventor: Hiroaki Yamada
  • Publication number: 20030023417
    Abstract: A system and method for designing photonic band gap structures. The system and method provide a user with the capability to produce a model of a two-dimensional array of conductors corresponding to a unit cell. The model involves a linear equation. Boundary conditions representative of conditions at the boundary of the unit cell are applied to a solution of the Helmholtz equation defined for the unit cell. The linear equation can be approximated by a Hermitian matrix. An eigenvalue of the Helmholtz equation is calculated. One computation approach involves calculating finite differences. The model can include a symmetry element, such as a center of inversion, a rotation axis, and a mirror plane. A graphical user interface is provided for the user's convenience. A display is provided to display to a user the calculated eigenvalue, corresponding to a photonic energy level in the Brilloin zone of the unit cell.
    Type: Application
    Filed: June 14, 2002
    Publication date: January 30, 2003
    Inventors: Chiping Chen, Michael A. Shapiro, Evgenya I. Smirnova, Richard J. Temkin, Jagadishwar R. Sirigiri
  • Patent number: 6507834
    Abstract: A method, apparatus, and an article of manufacture for parallel execution of SQL operations from stored procedures. One or more embodiments of the invention provide the stored procedure (stored procedure) with a C++ class (hereinafter referred to as “dispatcher”) that can take an SQL query and start parallel execution of the query. The query is optimized and parallelized. The dispatcher executes the query, sets up the communication links between the various operators in the query, and ensures that all the results are sent back to the data-server that originated the query request. Further, the dispatcher merges the results of the parallel execution and produces a single stream of tuples that is fed to the calling stored procedure. To provide the single stream to the calling stored procedure, one or more embodiments of the invention utilize a class that provides the stored procedure with a simple and easy-to-use interface to access the results of the nested SQL execution.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: January 14, 2003
    Assignee: NCR Corporation
    Inventors: Navin Kabra, Jignesh M. Patel, Jie-Bing Yu, Biswadeep Nag, Jian-Jun Chen
  • Patent number: 6499004
    Abstract: Solving simultaneous equations of the moment method defining relationships between a mutual impedence between elements of an electronic apparatus, a wave source, and an electric current flowing in each element so as to simulate an electric current, provided with a unit for calculating the mutual impedance at a sampling frequency and calculating approximation coefficients, when expressing the mutual impedance by approximation expressions in terms of exponents and exponent powers, from the calculated values and sampling frequency; a unit for forming the simultaneous differential equations by setting the approximation coefficients and initial value with respect to the simultaneous differential equations derived by performing a Fourier transform on the simultaneous equations of the moment method in which the approximation expressions are substituted; and a unit for calculating the electric current in the time domain flowing through the specified element by solving the simultaneous differential equations formed.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: December 24, 2002
    Assignee: Fujitsu Limited
    Inventors: Shinichi Ohtsu, Makoto Mukai
  • Patent number: 6480814
    Abstract: The present invention provides a method to create a Boolean or multilevel logic network model of a dynamic system of interdependent variables from observed system states transitions that can (1) operate with data consisting of only a fraction of all possible transitions, (2) accommodate measurement error on these transitions (3) produce a probability distribution over network functions (rather than simply giving one set of network functions that match the data) (4) support asynchronous activation times for different genes (5) support varying delays between gene activation and gene expression for different genes (6) accommodate the stochastic nature of gene network operations (7) support varying degrees of gene activation (not simply Boolean activation states) and (8) incorporate prior knowledge of the nature and limitations of the actual network functions being modeled.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: November 12, 2002
    Inventor: Bennett Simeon Levitan