Ravikanth
Ravikanth Avancha, Niskayuna, NY US
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20120243761 | SYSTEM AND METHOD FOR ESTIMATING VASCULAR FLOW USING CT IMAGING - A system and method for estimating vascular flow using CT imaging include a computer readable storage medium having stored thereon a computer program comprising instructions, which, when executed by a computer, cause the computer to acquire a first set of data comprising anatomical information of an imaging subject, the anatomical information comprises information of at least one vessel. The instructions further cause the computer to process the anatomical information to generate an image volume comprising the at least one vessel, generate hemodynamic information based on the image volume, and acquire a second set of data of the imaging subject. The computer is also caused to generate an image comprising the hemodynamic information in combination with a visualization based on the second set of data. | 09-27-2012 |
Ravikanth Challagulla, San Diego, CA US
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20150085916 | FILTERING VIDEO DATA IN VIDEO CODING - In an example, a method for filtering pixel data in video coding comprises determining a pixel filtering task from a plurality of pixel filtering tasks for filtering the pixel data, wherein each filtering task of the plurality of pixel filtering tasks is based on an instruction set for a programmable instruction set based controller, and executing the determined filtering task on the pixel data. | 03-26-2015 |
Ravikanth Dronamraju, Pleasanton, CA US
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20130238832 | DEDUPLICATING HYBRID STORAGE AGGREGATE - Methods and apparatuses for performing deduplication in a hybrid storage aggregate are provided. In one example, a method includes operating a hybrid storage aggregate that includes a plurality of tiers of different types of physical storage media. The method includes identifying a first storage block and a second storage block of the hybrid storage aggregate that contain identical data and identifying caching statuses of the first storage block and the second storage block. The method also includes deduplicating the first storage block and the second storage block based on the caching statuses of the first storage block and the second storage block. | 09-12-2013 |
20130238851 | HYBRID STORAGE AGGREGATE BLOCK TRACKING - Methods and apparatuses for operating a hybrid storage aggregate are provided. In one example, such a method includes operating a first tier of physical storage of the hybrid storage aggregate as a cache for a second tier of physical storage of the hybrid storage aggregate. The first tier of physical storage includes a plurality of assigned blocks. The method also includes updating metadata of the assigned blocks in response to an event associated with at least one of the assigned blocks. The metadata includes block usage information tracking more than two possible usage states per assigned block. The method can further include processing the metadata to determine a caching characteristic of the assigned blocks. | 09-12-2013 |
20130318210 | NON-DISRUPTIVE STORAGE SERVER MIGRATION - The techniques introduced here provide a storage server migration that is non-disruptive to client applications. The techniques described here allow the migration of data from a source storage server to a destination storage server without the need for planned downtime typically associated with storage server migration. Using the techniques described here, data migration operations are performed while client applications continue to run and access data from the source storage server. Once data migration operations are complete, all applications and clients are transitioned to the destination storage server without disruption to the client applications. | 11-28-2013 |
Ravikanth Erukulla, Milpitas, CA US
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20120166399 | AUTOMATED ROLE CLEAN-UP - Various embodiments of systems and method automated role clean-up are described herein. In various embodiments, an automated role clean-up agent can connect to a role repository system that may be configured to implement an automated role clean-up workflow. A method of an embodiment ensures that roles that are not being used or outdated are safe to delete. One or more deletion buffers may be configured to determine whether roles need to be deleted from the role repository system. Assigning conditions to a deletion buffer lets roles to be incubated in these deletion buffers for a desired period of time before deletion if the conditions are met. A re-affirmation can be sent out to role owners for deletion approval before roles are deleted. Deletion of the roles is performed by the role repository system. | 06-28-2012 |
20130159049 | AUTOMATIC RISK CALIBRATION OF ROLES IN COMPUTER SYSTEMS - Various embodiments of systems and methods for automatic calibration a risk level of a role are described herein. Automatically and periodically a risk level of a role is evaluated based on various risk factors associated with the role. Risk factors' values are determined by respective risk factor aggregators. Risk factors are assigned weights to determine their influence degree on the risk level of the role. The risk level of the role is computed by a risk calibration engine based on the determined risk factors' values and assigned weights, respectively. | 06-20-2013 |
Ravikanth Gv, Bangalore IN
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20110111905 | SINGLE PLANETARY HYBRID POWERTRAIN WITH AT LEAST THREE ELECTRICALLY-VARIABLE OPERATING MODES - A hybrid powertrain has an engine, an input member, an output member, and a stationary member, and includes a single planetary gear set having a first, a second, and a third member. The input member is connected for common rotation with the engine. The output member is connected for common rotation with the second member. A first and a second motor/generator are provided, as well as five torque-transmitting mechanisms, including only one brake. The torque-transmitting mechanisms are engagable in different combinations to establish at least two electric-only operating mode, at least two engine-only operating mode, and at least three electrically-variable operating modes. In one embodiment, an electric torque converter operating mode is provided, and may be the default mode in case of motor/generator failure. | 05-12-2011 |
20120149514 | MOTOR-ASSISTED TRANSMISSION - A powertrain has an engine with a crankshaft. The powertrain includes a planetary gear set having a first, a second, and a third member. The first member is connected for common rotation with an input member. A first clutch is selectively engageable to operatively connect the crankshaft with the input member. A second clutch is selectively engageable to ground the input member with a stationary member. An electric motor/generator has a rotor operatively connected for common rotation with the second member. An output member is provided, with a set of intermeshing gears configured to transfer torque from the third member to the output member. A first gear pair and a second gear pair are operable by engagement of a first synchronizer and a second synchronizer, respectively, to provide two different fixed ratios between the input member and the output member. | 06-14-2012 |
Ravikanth G V, Banglore IN
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20120004061 | SINGLE CLUTCH, TWO PLANETARY HYBRID ARCHITECTURE - A hybrid powertrain for a vehicle includes a prime mover, which may be an engine, and a transmission that has an input member configured for connection with the prime mover to receive torque from the prime mover, an output member, and a stationary member. A first motor/generator and a second motor/generator are provided as additional motive sources. A first planetary gear set and a second planetary gear set are included, each having a respective first member, second member, and third member. Only one clutch is operatively connected to the transmission, and it is selectively engagable to ground the input member and the first member of the second planetary gear set to the stationary member. | 01-05-2012 |
Ravikanth G V, Bangalore IN
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20110092328 | SINGLE PLANETARY, SINGLE MOTOR/GENERATOR HYBRID POWERTRAIN WITH THREE OR MORE OPERATING MODES - A hybrid powertrain has an engine, an input member, an output member, and a stationary member, and includes a single planetary gear set having a first, a second, and a third member. The input member is connected for common rotation with the engine and the output member is connected for common rotation with the second member. A single motor/generator is continuously connected for common rotation with the third member. A starter motor is operatively connected to the engine for starting the engine. A first torque-transmitting mechanism is selectively engagable to connect the input member for rotation with the first member. A second torque-transmitting mechanism is selectively engagable to ground the first member to the stationary member. A third torque-transmitting mechanism is selectively engagable to ground the third member to the stationary member. The powertrain is operable in an electric-only operating mode, an engine-only operating mode, and an electrically-variable operating mode. | 04-21-2011 |
20120010796 | CONTROL SYSTEM AND METHOD FOR SHIFT QUALITY AND PERFORMANCE IMPROVEMENT IN MANUAL TRANSMISSIONS USING ENGINE SPEED CONTROL - A control system for an engine of a vehicle includes a shift forecasting module that forecasts one of an upshift and a downshift of a manual transmission based on vehicle acceleration, clutch pedal position, acceleration pedal position and brake pedal position. A gear state calculating module determines a current gear state based on a speed of the engine and a speed of the vehicle. A next gear state calculating module determines a next gear state. The next gear state is based on the current gear state and the one of the upshift and downshift. A next engine speed calculating module estimates an estimated engine speed based on the next gear state and the vehicle speed. An engine speed control module adjusts the engine speed based on the estimated engine speed. | 01-12-2012 |
20130072336 | POWERTRAIN WITH TWO PLANETARY GEAR SETS AND TWO MOTOR/GENERATORS FOR HYBRID VEHICLE - A powertrain includes an input member, an output member, and a stationary member. A first and a second electric motor/generator are provided. Only two planetary gear sets are used, each having a respective first, second, and third member. An interconnecting member connects one of the members of a first one of the planetary gear sets to one of the members of a second one of the planetary gear sets. The input member, the output member, the first motor/generator and the second motor/generator are each continuously connected for common rotation with a different one of the members of the planetary gear sets that is not connected by the interconnecting member. Four brakes are each selectively engageable to ground a different respective one of the members of the planetary gear sets that is not connected by the interconnecting member to the stationary member. | 03-21-2013 |
20140277870 | EXTENDED-RANGE ELECTRIC VEHICLE WITH SUPERCAPACITOR RANGE EXTENDER - A vehicle includes an engine, fraction motor, final drive assembly, battery pack, and a supercapacitor module electrically connected to the battery pack. The vehicle also has first and second clutches and a controller. The clutches have opposite apply states. The first clutch connects an engine driveshaft to the motor to establish a neutral-charging mode. The second clutch connects an output shaft of the motor to the final drive assembly to establish a drive mode. The controller selects between the drive and neutral-charging modes in response to input signals. The drive mode uses energy from the supercapacitor module and battery pack to power the traction motor. The neutral-charging mode uses output torque from the engine to charge the supercapacitor module and battery pack. The clutches may be pnemauically-actuated, and the vehicle may be characterized by an absence of planetary gear sets. | 09-18-2014 |
Ravikanth Kasamsetty, Union City, CA US
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20080275896 | PRESERVING USER CODE IN OTT-GENERATED CLASSES - An object type translator (OTT) determines one or more database object types. The one or more database object types are mapped to a first structural language type definition code. After being generated, the user may add user code to the first structural language type definition code. During regeneration of these files, the first structural language type definition code is then parsed to determine the user code that has been added, based on the start and end markers that the user code segments have been marked with. OTT maps these user-code segments to the corresponding database types and keeps track of the mapping and the user code. When the OTT starts generating the second structural language code, the OTT determines a position where the user code should be inserted into the second structural language type definition code using that mapping. The user code is then inserted in the second structural language code in the position determined. Accordingly, the user code that was added is not lost when the structural language type definition code is regenerated from the one or more database object types. | 11-06-2008 |
Ravikanth Narumanchi, Hyderabad IN
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20100125854 | EVENT BASED ROUTING BETWEEN PRESENTATION AND BUSINESS LOGIC COMPONENTS - A business application framework comprising a variety of components that operate on an event-driven basis is described. In an embodiment, a delegate component is provided that receives requests from one or more presentation layer components to process various event. For any given request, the delegate component instantiates a controller component to process the event. In turn, the controller instantiates a routing logic component in order to determine a specific handler component for processing of the event by the underlying business layer. The handler component acts as a parent to one or more business layer components necessary to process the event. The handler component creates a response that is subsequently returned to the presentation layer component. During the design phase, only a plurality of events relevant to the presentation layer need to be defined to allow completion of the presentation layer, thereby allowing for the rapid development business applications. | 05-20-2010 |
Ravikanth Samprathi, San Jose, CA US
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20090238179 | DESTINATION MAC AGING OF ENTRIES IN A LAYER 2 (L2) FORWARDING TABLE - In one embodiment, entries in an address table of the forwarding engine in a linecard or supervisor are updated to a current time value when the MAC address in the entry matches the destination MAC address of a received packet to prevent flooding if the linecard or supervisor is a non-ingress linecard or supervisor of an asymmetrically routed flow. | 09-24-2009 |
20090252036 | MULTINODE SYMMETRIC LOAD SHARING - In one embodiment, a load-balancing algorithm ensures that both network nodes at endpoints of a group of physical links aggregated into a logical channel are using the same load-sharing algorithm and also ensures that the load-sharing algorithm is normalized so that the same flow traverses the same physical link in both directions. | 10-08-2009 |
Ravikanth Veluri, Burlington, MA US
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20130116238 | MODULATORS OF ATP-BINDING CASSETTE TRANSPORTERS - Compounds of the present invention and pharmaceutically acceptable compositions thereof, are useful as modulators of ATP-Binding Cassette (“ABC”) transporters or fragments thereof, including Cystic Fibrosis Transmembrane Conductance Regulator (“CFTR”). The present invention also relates to methods of treating ABC transporter mediated diseases using compounds of the present invention. | 05-09-2013 |
Ravikanth Vootukuri, Madison, AL US
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20100238167 | SYSTEM AND METHOD FOR CONVERTING DIMENSIONS - A system, method, and computer program for selecting geometries from a solid model that is manipulated in a computer having software instructions, comprising: a computer system, wherein the computer system includes a memory, a processor, a user input device, and a display device; a computer generated geometric model stored in the memory in the memory of the computer system; and wherein the computer system selects a two-dimensional sketch geometry from a two-dimensional sketch to form a three-dimensional model using a feature command; identifies a plurality of elements on the two-dimensional sketch geometry that correspond to the three-dimensional model; forms a counterpart element on the three-dimensional model that is one of a dimension and a constraint from the identified plurality of elements; and provides the capability to modify the three-dimensional model by manipulating the counterpart element; and appropriate means and computer-readable instructions. | 09-23-2010 |
20110098983 | SYSTEM AND METHOD FOR PRODUCING EDITABLE THREE-DIMENSIONAL MODELS - A method and related CAD system and computer readable medium for creating a dimensioned object model in a CAD system, including automatically associating editable dimensions with an object model in the CAD system. The method includes receiving 2D CAD data, the 2D CAD data including dimension information, and creating a 3D model corresponding to the 2D CAD data. The method also includes associating the dimension information with features of the 3D model and storing the 3D model and associated dimension information in the CAD system. The dimension information can thereafter be edited to automatically produce corresponding changes in the 3D model. Other methods are also described. | 04-28-2011 |