Santa Clara, CA, United States
Santa Clara, CA, United States

Nvidia Corporation is an American worldwide technology company based in Santa Clara, California. Nvidia manufactures graphics processing units , as well as system-on-a-chip units for the mobile computing market. Nvidia's primary GPU product line, labeled "GeForce", is in direct competition with AMD's "Radeon" products. Nvidia also joined the gaming industry with its handheld Shield Portable and Shield Tablet, as well as the tablet market with the Tegra Note 7.In addition to GPU manufacturing, Nvidia provides parallel processing capabilities to researchers and scientists that allow them to efficiently run high-performance applications. They are deployed in supercomputing sites around the world. More recently, Nvidia has moved into the mobile computing market, where it produces Tegra mobile processors for smartphones and tablets, as well as vehicle navigation and entertainment systems. In addition to Advanced Micro Devices, its competitors include Intel and Qualcomm. Wikipedia.


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One embodiment of the present invention is a parallel processing unit (PPU) that includes one or more streaming multiprocessors (SMs) and implements a replay unit per SM. Upon detecting a page fault associated with a memory transaction issued by a particular SM, the corresponding replay unit causes the SM, but not any unaffected SMs, to cease issuing new memory transactions. The replay unit then stores the faulting memory transaction and any faulting in-flight memory transaction in a replay buffer. As page faults are resolved, the replay unit replays the memory transactions in the replay bufferremoving successful memory transactions from the replay bufferuntil all of the stored memory transactions have successfully executed. Advantageously, the overall performance of the PPU is improved compared to conventional PPUs that, upon detecting a page fault, stop performing memory transactions across all SMs included in the PPU until the fault is resolved.


Patent
Nvidia | Date: 2017-02-10

This description is directed to a dynamic random access memory (DRAM) array having a plurality of rows and a plurality of columns. The array further includes a plurality of cells, each of which are associated with one of the columns and one of the rows. Each cell includes a capacitor that is selectively coupled to a bit line of its associate column so as to share charge with the bit line when the cell is selected. There is a segmented word line circuit for each row, which is controllable to cause selection of only a portion of the cells in the row.


Patent
Nvidia | Date: 2017-03-27

Embodiments related to managing lazy runahead operations at a microprocessor are disclosed. For example, an embodiment of a method for operating a microprocessor described herein includes identifying a primary condition that triggers an unresolved state of the microprocessor. The example method also includes identifying a forcing condition that compels resolution of the unresolved state. The example method also includes, in response to identification of the forcing condition, causing the microprocessor to enter a runahead mode.


Patent
Nvidia | Date: 2017-01-18

A method, computer readable medium, and system are disclosed for performing tree traversal with backtracking in constant time. The method includes the steps of traversing a tree, maintaining a bit trail variable and a current key variable during the traversing, where the bit trail variable includes a first plurality of bits indicating tree levels on which a node has been postponed along a path from the root of the tree during the traversing, and the current key variable includes a second plurality of bits indicating a number of a current node within the tree, and performing backtracking within the tree during the traversing, utilizing the bit trail variable and the current key variable.


A method, computer readable medium, and system are disclosed for detecting and classifying hand gestures. The method includes the steps of receiving an unsegmented stream of data associated with a hand gesture, extracting spatio-temporal features from the unsegmented stream by a three-dimensional convolutional neural network (3DCNN), and producing a class label for the hand gesture based on the spatio-temporal features.


Patent
Nvidia | Date: 2017-04-03

In one embodiment, a system comprises: a global clock input for receiving a global clock, a plurality of partitions; and a skew tolerant interface configured to compensate for clock skew differences between a global clock from outside at least one of the partitions and a balanced local clock within at least one of the partitions. The partitions can be test partitions. The skew tolerant interface can cross a mesochronous boundary. In one exemplary implementation, the skew tolerant interface includes a deskew ring buffer on communication path of the at least one partition. pointers associated with the ring buffer can be free-running and depend only on clocks being pulsed when out of reset. The scheme can be fully synchronous and deterministic. The scheme can be modeled for the ATPG tools using simple pipeline flops. The depth of the pipeline can be dependent on the pointer difference for the read/write interface. The global clock input can be part of a scan link.


Patent
Nvidia | Date: 2017-03-31

Three state latch. In accordance with a first embodiment, an electronic circuit includes n pairs of cascaded logical gates. Each of the n pairs of cascaded logical gates includes a first logical gate including n1 first gate inputs and one first gate output, and a second logical gate including two second gate inputs and one second gate output. One of the second gate inputs is coupled to the first gate output. The second gate output is cross coupled to one of the first gate inputs of all other the pairs of cascaded logical gates, and n is greater than 2.


A display method and system are disclosed for virtual/augmented reality. The method includes the steps of generating an image by a projection engine and projecting light rays defining the image onto a diffuser holographic optical element (DHOE) located between an observer and a concave mirror element, where a concave surface of the concave mirror element faces the observer. The light rays are projected onto the DHOE at a reference angle that causes the light rays to be diffused to the concave surface of the concave mirror element and the diffused light rays are reflected back to the observer such that the observer perceives a virtual image that appears to the observer at a position behind the concave mirror element and further from the observer than the concave mirror element.


A method and system for operating a catadioptric glasses system is presented. The method includes the steps of generating an image via a light engine included in a glasses system and projecting the image onto a display that includes a diffusion layer positioned between a curved mirror and a users retina. Light emitted from a surface of the diffusion layer is reflected off the curved mirror to the users retina through the diffusion layer, and the diffusion layer is located between a focal point of the curved mirror and a surface of the curved mirror. The diffusion layer may be mechanically moved relative to the users eye to enable light to pass through transparent regions in the diffusion layer in a time multiplexed fashion. The glasses system may also include a mirror stack to enable different virtual images to be formed at different depths.


Patent
Nvidia | Date: 2017-04-17

In one embodiment, a car navigation device is provided. The device comprises: at least one wide-angle camera; a video correction unit for acquiring video data from the wide-angle lens and correcting the video data; a video merging unit for acquiring corrected video data from video correction unit and merging the corrected video data; an image recognition unit for acquiring video from the video merging unit and performing image recognition to the video; and a driving assistant unit for acquiring data from the image recognition unit and assisting driving in accordance with the recognized content. The navigation device provided by various embodiments in accordance with the present invention can correct and recognize the images taken by fisheye lens in real-time so as to assist the driver for driving or drive the car automatically without a human being.

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