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Govindaraju, US
Abhiram Govindaraju, San Diego, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20110240890 | Extreme Ultraviolet Light Source - An apparatus includes a light source having a gain medium for producing an amplified light beam of a source wavelength along a beam path to irradiate a target material in a chamber and to generate extreme ultraviolet light; and a subsystem overlying at least a portion of an internal surface of the chamber and configured to reduce a flow of light at the source wavelength from the internal surface back along the beam path. | 10-06-2011 |
Jothikumar Govindaraju, Menlo Park, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090106587 | Software Recovery Method for Flash Media with Defective Formatting - A method and software program for recovering data from corrupted flash media. In one aspect, the method employs a low-level access scheme that enables data to be recovered when high-level interfaces, such as file systems, are damaged. The type of flash media is determined, and a corresponding access scheme is employed. Depending on the type of damage to the media, a physical-to-logical table may be built and employed to sequentially access the flash media in search of indicia from which selectable file-types can be identified, or the media may be accessed using normal operating system commands. Once the file indicia are found, the location of corresponding file data is identified, whereupon the file data are read and stored. The software program employs an application program interface (API) comprising one or more sets of pass-through commands to enable low-level access to the flash media and to build the physical-to-logical table. | 04-23-2009 |
Jothikumar Govindaraju, Santa Clara, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090044282 | System and Method for Generating and Displaying a Keyboard Comprising a Random Layout of Keys - Systems and methods for generating and displaying a keyboard comprising a random layout of keys are described here. One embodiment includes displaying a keyboard comprising a random layout of keys, to receive a user entered key phrase to be entered to gain access to secure data, and receiving the user entered key phrase by the user selecting keys of the keyboard via a pointing input device. The displaying includes, individually mapping keys of the keyboard to a separate value within a first value range, selecting a key for the keyboard based on the random value generated, and repeating the generating the random value and selecting a key for the keyboard based on the random value to select a remainder of keys for generating the random layout of keys for the keyboard. | 02-12-2009 |
| 20090044284 | System and Method of Generating and Providing a Set of Randomly Selected Substitute Characters in Place of a User Entered Key Phrase - Systems and methods of generating and providing a set of randomly selected substitute characters in place of a user entered key phrase are described here. One embodiment includes receiving a key phrase input by a user to gain access to secured data, and, in response to receiving the user entered key phrase, randomly selecting a set of substitute characters and providing the set of substitute characters in place of the key phrase entered by the user. In one embodiment, the randomly selecting comprises using a random number generator to select from a substitute character from a pre-generated set of substitute characters for each character, number, or text of the user entered key phrase. In one embodiment, the providing the set of substitute characters further comprises providing the randomly selected set of substitute characters in a display buffer as the user entered key phrase. | 02-12-2009 |
Naga Govindaraju, Redmond, WA US
| Patent application number | Description | Published |
|---|---|---|
| 20100076941 | MATRIX-BASED SCANS ON PARALLEL PROCESSORS - A system and method for performing a scan of an input sequence in a parallel processor having a shared register file. A two dimensional matrix is generated, having a number of rows representing a number of threads and a number of columns based on the input sequence block size and the number of rows. One or more padding columns may be added to the matrix to avoid or reduce memory bank conflicts. A first traversal of the rows performs a reduction or a scan of each of the rows in parallel, storing the reduction values. The reduction values are used during a second traversal to propagate the reduction values. In a segmented scan, propagation is selectively performed based on flags representing segment boundaries. | 03-25-2010 |
Naga K. Govindaraju, Redmond, WA US
| Patent application number | Description | Published |
|---|---|---|
| 20090102843 | IMAGE-BASED PROXY ACCUMULATION FOR REALTIME SOFT GLOBAL ILLUMINATION - General and realtime technique for soft global illumination in low-frequency environmental lighting. The technique accumulates over a relatively few spherical proxies that approximate the light blocking and re-radiating effect of dynamic geometry. Soft shadows are computed by accumulating log visibility vectors for each sphere proxy as seen by each receiver point. Inter-reflections are computed by accumulating vectors representing the proxy's unshadowed radiance when illuminated by the environment. Both vectors capture low-frequency directional dependence using the spherical harmonic basis. Additionally, a new proxy accumulation method splats each proxy to receiver pixels in image space to collect the proxy's contribution to shadowing and indirect lighting. A soft rendering pipeline unifies direct and indirect soft effects with an accumulation methodology that maps entirely to a graphics processing unit and outperforms previous vertex-based methods. | 04-23-2009 |
| 20100088356 | FAST COMPUTATION OF GENERAL FOURIER TRANSFORMS ON GRAPHICS PROCESSING UNITS - Described is a technology for use with general discrete Fourier transforms (DFTs) performed on a graphics processing unit (GPU). The technology is implemented in a general library accessed through GPU-independent APIs. The library handles complex and real data of any size, including for non-power-of-two data sizes. In one implementation, the radix-2 Stockham formulation of the fast Fourier transform (FFT) is used to avoid computationally expensive bit reversals. For non-power of two data sizes, a Bluestein z-chirp algorithm may be used. | 04-08-2010 |
| 20100106758 | COMPUTING DISCRETE FOURIER TRANSFORMS - A system described herein includes a selector component that receives input data that is desirably transformed by way of a Discrete Fourier Transform, wherein the selector component selects one of a plurality of algorithms for computing the Discrete Fourier Transform from a library based at least in part upon a size of the input function. An evaluator component executes the selected one of the plurality of algorithms to compute the Discrete Fourier Transform, wherein the evaluator component causes leverages shared memory of a processor to compute the Discrete Fourier Transform. | 04-29-2010 |
| 20110081023 | REAL-TIME SOUND PROPAGATION FOR DYNAMIC SOURCES - Described herein are techniques pertaining to real-time propagation of an arbitrary audio signal in a fixed virtual environment with dynamic audio sources and receivers. A wave-based numerical simulator is configured to compute response signals in the virtual environment with respect to a sample signal at various source and receiver locations. The response signals are compressed and placed in the frequency domain to generate frequency responses. Such frequency responses are selectively convolved with the arbitrary audio signal to allow real-time propagation with moving sources and receivers in the virtual environment. | 04-07-2011 |
Sridhar Govindaraju, Hillsboro, OR US
| Patent application number | Description | Published |
|---|---|---|
| 20080242117 | APPARATUS TO REDUCE WAFER EDGE TEMPERATURE AND BREAKAGE OF WAFERS - In some embodiments radiation incident on a wafer is provided to perform an annealing process, and the wafer is cooled at an edge portion to reduce temperature and stress on the wafer. Other embodiments are described and claimed. | 10-02-2008 |
| 20090323759 | Temperature measurement with reduced extraneous infrared in a processing chamber - Temperature measurement using a pyrometer in a processing chamber is described. The extraneous light received by the pyrometer is reduced. In one example, a photodetector is used to measure the intensity of light within the processing chamber at a defined wavelength. A temperature circuit is used to convert the measured light intensity to a temperature signal, and a doped optical window between a heat source and a workpiece inside processing chamber is used to absorb light at the defined wavelength directed at the workpiece from the heat source. | 12-31-2009 |
| 20090325392 | SUB-SECOND ANNEALING PROCESSES FOR SEMICONDUCTOR DEVICES - An annealing method and apparatus for semiconductor manufacturing is described. The method and apparatus allows an anneal that can span a thermal budget and be tailored to a specific process and its corresponding activation energy. In some cases, the annealing method spans a timeframe from about 1 millisecond to about 1 second. An example for this annealing method includes a sub-second anneal method where a reduction in the formation of nickel pipes is achieved during salicide processing. In some cases, the method and apparatus combine the rapid heating rate of a sub-second anneal with a thermally conductive substrate to provide quick cooling for a silicon wafer. Thus, the thermal budget of the sub-second anneal methods may span the range from conventional RTP anneals to flash annealing processes (including duration of the anneal, as well as peak temperature). Other embodiments are described. | 12-31-2009 |
Venugopal Govindaraju, Buffalo, NY US
| Patent application number | Description | Published |
|---|---|---|
| 20090116757 | SYSTEMS AND METHODS FOR CLASSIFYING ELECTRONIC DOCUMENTS BY EXTRACTING AND RECOGNIZING TEXT AND IMAGE FEATURES INDICATIVE OF DOCUMENT CATEGORIES - A method in a document analysis system automatically extracts from each received electronic document image and text features, in which the image features are indicative of how the document is laid out or textually-organized and therefore indicative of a corresponding document category, next compares the extracted image and text features with feature sets associated with each document category, and then classifies each document to a document category, the feature set of which best matches the extracted features of the document. | 05-07-2009 |
Venugopal Govindaraju, Williamsville, NY US
| Patent application number | Description | Published |
|---|---|---|
| 20080220984 | Method for diagnosis of physiological states by detecting patterns of volatile analytes - Provided is a non-invasive method for identification of non-physiological, physiological or diseased states based on the volatiles in gas or biogas samples from individuals. The method uses a sensor array comprising a plurality of distinct sensors which differ from other sensors by the sensing molecules or the sol-gel holding material composition. In response to a combination of volatiles, a pattern of responses is generated which can be correlated to particular non-physiological, physiological or diseased state. | 09-11-2008 |
| 20080260212 | System for indicating deceit and verity - An improved method for detecting truth or deceit ( | 10-23-2008 |