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| Number | Title | Issue Date |
| 8438003 | Methods for improved simulation of integrated circuit designs A method of improved simulator processing is provided. The method according to the current invention includes grouping frequently accessed data into one set id to improve memory hierarchy performance. The method further includes simulating predication in a non-predi... | 05/07/2013 |
| 8380482 | System and method for clock modeling in discrete-event simulation Local clock modeling for a discrete event simulator is described. A local clock generator provides realistic clock characteristics in terms of clock precision and clock drift and clock mapping utilities provide API for other modules and/or protocols in the discrete ... | 02/19/2013 |
| 8374840 | System and method for feedback-guided test generation for cyber-physical systems using monte-carlo A system and method for generating test vectors includes generating traces of a system model or program stored in memory using a simulation engine. Simulated inputs are globally optimized using a fitness objective computed using a computer processing device. The sim... | 02/12/2013 |
| 8332202 | Hybrid system simulation method and simulation program product A technique for enhancing the execution efficiency of simulation of a hybrid system. A continuous system simulator receives a request for evaluation of an event generating conditional expression for an event to be processed by a discrete system simulator, from the d... | 12/11/2012 |
| 8260601 | Generating and delaying function calls in a discrete event modeling environment A mechanism to dynamically vary the amount of delay for an event-generated function call is discussed. The event causing the generation of the function call may be a signal-based event, function call event or some other type of event. A function call generating dela... | 09/04/2012 |
| 8244514 | Correlating out interactions and profiling the same A method and system for correlating out interactions, which occur due to one or a set of specific events, of an application, which is deployed in multiple adjacent tiers in an actual environment is described. First, a simulation environment corresponding to the actu... | 08/14/2012 |
| 8195443 | Application level interface to network analysis tools A user interface to a network simulator facilitates the use of application layer parameters and application layer logic. The user interface is configured to allow the user to define the input in a graphic form, or a text/programming form, or a combination of both. P... | 06/05/2012 |
| 8185370 | Discrete event simulation tool combining process-driven and event-driven models The embodiments described herein generally relate to a discrete event simulation (DES) tool which combines the process-driven model and the event-driven model. This integrated process (which uses entities) and event simulation framework according to the various embo... | 05/22/2012 |
| 8099271 | Design instrumentation circuitry Techniques and systems for analysis, diagnosis and debugging fabricated hardware designs at a Hardware Description Language (HDL) level are described. In particular, the techniques and systems relate to design instrumentation circuitry that facilitates the analysis,... | 01/17/2012 |
| 8036871 | Generating and delaying function calls in a discrete event modeling environment A mechanism to dynamically vary the amount of delay for an event-generated function call is discussed. The event causing the generation of the function call may be a signal-based event, function call event or some other type of event. A function call generating dela... | 10/11/2011 |
| 7957950 | Hard/soft cooperative verifying simulator A hard/soft cooperative verifying simulator is based on a SystemC simulator, and provides the capability of reducing overhead of context switching control thereby to shorten processing time. Time keepers for controlling simulation times of a plurality of threads are... | 06/07/2011 |
| 7945434 | Non-intrusive event capturing for event processing analysis A system and a method for capturing, storing and replaying data describing application of an event-based process to an event are described. As an event processing engine processes an input event, specified data is captured by a store monitor included in the event pr... | 05/17/2011 |
| 7925490 | Method of transactional simulation of a generic communication node model, and the corresponding computer program product and storage means A method of transactional simulation of a generic communication node model is proposed. The method includes steps, performed at each simulation step corresponding to transaction start events and transaction end events, including: calculating a remaining quantity of ... | 04/12/2011 |
| 7885802 | Method of simulating a complex system including scheduler hierarchy, and corresponding storage means and computer program product A method is provided for simulating a complex system including a scheduler hierarchy. The complex system includes at least one processor that executes a set of functions under the control of a hierarchical group of schedulers. The method includes a step of construct... | 02/08/2011 |
| 7873505 | Method and apparatus for predicting scheduled system downtime The invention includes a method for predicting a scheduled downtime associated with a system. In one embodiment, a method includes determining a system model associated with the system according to a system type of the system, determining at least one scheduled syst... | 01/18/2011 |
| 7865349 | Simulation, measurement and/or control system and method with coordinated timing A system and method for coordinating timing between simulation of a system and measurement and/or control of the system. A measurement/control loop comprising a measurement/control program, a simulation program, and an execution coordination kernel is described. The... | 01/04/2011 |
| 7856347 | Facilitating simulation of a model within a distributed environment Simulation of models within a distributed environment is facilitated. A model is partitioned based on clock domains, and communication between partitions on different processors is performed on synchronous clock boundaries. Further, data is exchanged across the netw... | 12/21/2010 |
| 7822592 | Acting on a subject system In an active system, an actor is able to effect action in a subject system. The actor and the subject system exist in an environment which can impact the subject system. Neither the actor nor the subject system has any control over the environment. The actor include... | 10/26/2010 |
| 7761279 | Synchronized transient-envelope and event-driven simulation of electronic circuits In one embodiment of the invention, a method of simulating a circuit is disclosed including simulating an analog component of the circuit over a first simulation time period with a first envelope simulation; adaptively switching from simulating the analog component ... | 07/20/2010 |
| 7739096 | System for extraction of representative data for training of adaptive process monitoring equipment System and method for selection of appropriate modeling data from a general data set to characterize a modeled process. The data is typically correlated sensor data, representing a multitude of snapshots of a sensed machine or process. The invention accommodates sel... | 06/15/2010 |
| 7720666 | Method for establishing bit error rate (BER) requirement for a data communication system A method for determining throughput of a data passing between end points of a data communication system as a function of bit error rate, comprising: generating a mathematical model of the functional relationship between the throughput of data passing from a transmit... | 05/18/2010 |
| 7702496 | Method and apparatus for analyzing and problem reporting in grid computing networks A method, device and computer product suitable for performing an analysis on a Grid Computer Network (GCN) is disclosed. The method comprises the steps of representing selected ones of a plurality of components and a relationship among the components in the GCN, pro... | 04/20/2010 |
| 7590519 | Distributed system simulation: slow message relaxation Distributed system simulation is enhanced by extending the simulation window. In a described implementation, the simulation window extension is facilitated with a slow message relaxation scheme. For example, especially when the simulation window is extended, slow un... | 09/15/2009 |
| 7571089 | Method for simulating a system having multiple failure modes A method is described for determining the effectiveness of maintenance or other improvements to a system having multiple sections and multiple modes of failure. The method uses a simulation model that is dynamic in that it can change during a simulation run to show ... | 08/04/2009 |
| 7565279 | Callbacks in asynchronous or parallel execution of a physics simulation Embodiments of a callback procedure mechanism and method are disclosed in relation to a system running a physics simulation in parallel with a main application. A main application registers callback procedures in memory shared with the physics simulation in response... | 07/21/2009 |
| 7490029 | Distributed simulation A method and apparatus are presented to facilitate simulation of complex systems on multiple computing devices. Model authors can specify state-related information to be exported for viewing or access by other applications and models. Subsystem models may be written... | 02/10/2009 |
| 7487077 | Modeling delay using a discrete event execution modeling environment A discrete event system (DES) modeling environment models the occurrence of events independent of continuous model time. In a DES modeling environment, state transitions depend not directly on time, but rather aperiodic discrete incidents known as events. A discrete... | 02/03/2009 |
| 7469203 | Wireless network hybrid simulation A simulation method and system partitions network traffic into background traffic and explicit traffic, wherein explicit traffic is processed in detail, and background traffic is processed at a more abstract level. The packets of explicit traffic are modeled in comp... | 12/23/2008 |
| 7460989 | Method and apparatus for modeling multiple concurrently dispatched instruction streams in super scalar CPU with a sequential language A method is provided, wherein a virtual internal master clock is used in connection with a RISC CPU. The RISC CPU comprises a number of concurrently operating function units, wherein each unit runs according to its own clocks, including multiple-stage totally unsync... | 12/02/2008 |
| 7454325 | Method, system and program product for defining and recording threshold-qualified count events of a simulation by testcases According to one method of simulation processing, a count event counter for a count event is created within instrumentation of a hardware description language (HDL) simulation model of a design and a threshold greater than 1 is established for the count event counte... | 11/18/2008 |
| 7444277 | Facilitating simulation of a model within a distributed environment Simulation of models within a distributed environment is facilitated. A model is partitioned based on clock domains, and communication between partitions on different processors is performed on synchronous clock boundaries. Further, data is exchanged across the netw... | 10/28/2008 |
| 7412371 | Time synchronized playback and control of dissimilar data files A system, and a corresponding method, provides time synchronized playback and control of dissimilar data in a simulation architecture. The system includes a master site including a controller, and agents, implemented by the controller, where the controller directs t... | 08/12/2008 |
| 7395197 | Verification method and system for logic circuit A shared register row is provided between a program-based circuit simulator and a device-based circuit simulator. The shared register row includes a plurality of shared registers each corresponding to signals transmitted between the program-based and device-based ci... | 07/01/2008 |
| 7395196 | Test-cases for functional verification of system-level interconnect Generation of test cases for functional verification of a complex system-under-test is achieved by the use of a probability matrix. The probability matrix represents a non-uniform distribution function of resource combinations used in the transactions, and can be cr... | 07/01/2008 |
| 7392169 | Method, system and program product for defining and recording minimum and maximum event counts of a simulation utilizing a high level language According to one method of simulation processing, instrumentation code, such as an runtime executive (rtx), receives one or more statements describing an count event and identifying the count event as an outlying count event. While simulating a design utilizing the ... | 06/24/2008 |
| 7389218 | Hardware and software co-simulation method for non-blocking cache access mechanism verification A hardware and software co-simulation method for non-blocking cache access mechanism verification is provided. The method is applied for cache access mechanism verification. First, at least one way buffer is added into the software modeling, then the hardware and so... | 06/17/2008 |
| 7380168 | System development tool According to some embodiments, execution information is received from a first development tool. Execution information is also received from a second development tool. Based on the first execution information and the second execution information, operation of the fir... | 05/27/2008 |
| 7373587 | Representing sub-events with physical exertion actions A live event may be broadcasted by producing a computer coded description of the sub-events that constitute the event. The coded description is stored in a centralized computer data base and the information thus stored is accessible by a viewer's computer. That view... | 05/13/2008 |
| 7373343 | Requirements management semantics modeling Described is a method and system of requirements management including the expression in a requirements management tool of a relationship selected from the group consisting of a satisfaction relationship, an alternative relationship, a conflict relationship, and a co... | 05/13/2008 |
| 7373290 | Method and system for reducing storage requirements of simulation data via keyword restrictions Disclosed herein is a method of managing data results of simulation processing of a hardware description language (HDL) model based upon keywords. In accordance with the method, a restriction list associated with the HDL model is received. The HDL model has a maximu... | 05/13/2008 |
