| Patent application number | Description | Published |
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| 20130033489 | MULTIGRID PRESSURE SOLVER FOR FLUID SIMULATION - One embodiment of the present invention sets forth multigrid generation technique which enables accurate simulations of large scale three dimensional (3D) fluid volumes. A model of the fluid to be simulated is represented using a cell grid. The generated multigrid provides a hierarchy of increasingly coarser representations of the model that are used by a pressure solver. Eulerian simulation techniques require solving a linear system to determine pressure values for each cell within the cell grid. Different levels of the multigrid are then used to compute the pressure values for different regions of the model, maintaining accuracy near the surface of the fluid while simplifying the computations. The accurate pressure values ensure that the simulation produces detailed features of the water movement. Additionally, the multigrid pressure solver may be optimized for execution by a graphics processor. | 02-07-2013 |
| 20130035917 | REAL-TIME EULERIAN WATER SIMULATION USING A RESTRICTED TALL CELL GRID - One embodiment of the present invention sets forth an Eulerian fluid simulation technique which enables real-time simulations of large scale three dimensional fluid volumes that include free surface water. A hybrid grid representation composed of regular cubic cells on top of a layer of tall cells is used to reduce computation time. Water above an arbitrary terrain can be represented without consuming an excessive amount of memory and compute power, while focusing simulation effort on the area near the surface of the water to produce accurate results. Additionally, the grid representation may be optimized for a graphics processor implementation of the fluid solver. | 02-07-2013 |
| 20130035918 | MULTI-GRID FLUID PRESSURE SOLVER HANDLING SEPARATING SOLID BOUNDARY CONDITIONS - One embodiment of the present invention sets forth a geometric multi-grid technique which enables accurate simulations of three dimensional (3D) fluid volumes. A model of the fluid to be simulated is represented using a cubic cell grid. The geometric multi-grid is generated to provide a hierarchy of increasingly coarser representations of the model that are used by a fluid pressure solver. During fluid simulations, the linear complementarity problem (LCP) resulting from discretizing the Poisson equation, subject to separating solid boundary conditions, is solved using the geometric multi-grid. Visual artifacts such as liquid sticking to a bounding surface are minimized and the computations performed to solve the LCP are simplified. | 02-07-2013 |
| 20140168214 | METHOD OF SIMULATING CLOTHING USING LONG RANGE ATTACHMENTS - A method is provided for depicting on a display, an object within a simulated environment having clothing. In this method, the clothing is represented as a series of vertices that include vertices that are attached to the object and vertices that are not attached to the object. The method improves upon position based dynamics algorithm by constraining unattached vertices to be a predefined distance away from attached vertices that are connected thereto to compensate for overstretching in the simulated clothing. | 06-19-2014 |
| 20140172380 | TECHNIQUE FOR SIMULATING THE DYNAMICS OF HAIR - A simulation engine is configured to generate a physical simulation of a chain of particles by implementing a physics-based algorithm. The simulation engine is configured to generate a predicted position for each particle and to then adjust the predicted position of each particle based on a set of constraints associated with the physics-based algorithm. The simulation engine may then generate a predicted velocity for a given particle based on the adjusted, predicted position of that particle and based on the adjusted, predicted position of an adjacent particle. | 06-19-2014 |
| Patent application number | Description | Published |
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| 20120200473 | HARMONIC REJECTED ANTENNA SWITCH - The exemplary embodiments include a radio frequency antenna switch configured to reject harmonic frequencies. In addition, the harmonic-rejected radio frequencies of the radio frequency antenna switch may be tuned by use of a capacitor array. The capacitor array may be configured with fuse elements or by control logic. | 08-09-2012 |
| 20120233374 | DUAL MODE SERIAL/PARALLEL INTERFACE AND USE THEREOF IN IMPROVED WIRELESS DEVICES AND SWITCHING COMPONENTS - Systems, methods, and devices for communicating with a serial/parallel interface are described herein. In an aspect, a wireless device includes a transceiver configured to output a plurality of transmission paths, and an antenna configured to output a signal corresponding to at least one of the transmission paths. The wireless device further includes a wireless switching component including a radio-frequency switch configured to selectively connect the antenna to one of the transmission paths, a plurality of signal pins, a serial interface including a plurality of serial inputs electrically coupled to at least one pin of the plurality of signal pins, a parallel interface including a plurality of parallel inputs electrically coupled to at least one pin of the plurality of signal pins, a decoder, and a level shifter configured to control the radio-frequency switch, the at least one pin electrically coupled to both a serial input and a parallel input. | 09-13-2012 |
| 20140009207 | RADIO-FREQUENCY SWITCH HAVING DYNAMIC GATE BIAS RESISTANCE AND BODY CONTACT - Radio-frequency (RF) switch circuits having switchable transistor coupling for improved switching performance. An RF switch system includes at least one field-effect transistor (FET) disposed between first and second nodes, each FET having a gate and body. A switchable resistive coupling circuit is connected to each of the respective gates. A switchable resistive grounding circuit is connected to each of the respective bodies. | 01-09-2014 |
| 20140009214 | CIRCUITS, DEVICES, METHODS AND APPLICATIONS RELATED TO SILICON-ON-INSULATOR BASED RADIO-FREQUENCY SWITCHES - Radio-frequency (RF) switch circuits are disclosed providing improved switching performance. An RF switch system includes a plurality of field-effect transistors (FETs) connected in series between first and second nodes, each FET having a gate and a body. A compensation network including a gate-coupling circuit couples the gates of each pair of neighboring FETs. The compensation network may further including a body-coupling circuit that couples the bodies of each pair of neighboring FETs. | 01-09-2014 |
