Nvidia Corporation

Ian M Williams

Dat T Nguyen

Thomas J True

Eric Boucher

Satish D Salian

Jeffrey Chandler Doughty

Franck Diard

Michael B Diamond

Fred D Nicklisch

Lauro B Mañalac

Ralf Biermann

Andrew B Ritger

Kenneth Leon Adams, Jr

John Stephen Montrym

James M Jones

Franck R Diard

Jeffrey J Irwin

Jeffrey F Juliano

Adrian Muntianu

Dale Ah Tye

Robert Morell

A method and system for presenting image data to a video output device is disclosed. One embodiment of the present invention sets forth a method, which includes the steps of queuing the buffer of image data for display, attaching an object to a command associated with presenting the buffer of image data, wherein the object is capable of storing timing information relating to executing the command, and enabling an application program to access the timing information.

Method and system for presenting image data to a video output device

One embodiment of the present invention sets forth a technique for displaying high-resolution images using multiple graphics processing units (GPUs). The graphics driver is configured to present one virtual display device, simulating a high-resolution mosaic display surface, to the operating system and the application programs. The graphics driver is also configured to partition the display surface amongst the GPUs and transmit commands and data to the local memory associated with the first GPU. A video bridge automatically broadcasts this information to the local memories associated with the remaining GPUs. Each GPU renders and displays only the partition of the display surface assigned to that particular GPU, and the GPUs are synchronized to ensure the continuity of the displayed images. This technique allows the system to display higher resolution images than the system hardware would otherwise support, transparently to the operating system and the application programs.

System and method for rendering and displaying high-resolution images

Disclosed are an apparatus, a computer device, a system, computer readable media and a method for using graphics processing unit ('GPU')-generated data to characterize, in-situ, the ability of a cable to reliably carry digitized video, among other things. In one embodiment, a computing device includes a processor coupled via a system bus to a graphics engine and a video cable-testing apparatus. This apparatus has an input port configured to couple to the digitized video cable to receive pixel data generated by the graphics engine. It also has a signal integrity evaluator ('SIE') configured to identify the digitized video cable as the source an amount of data corruption, the amount of data corruption being a function of the pixel data. The signal integrity evaluator includes a classifier to classify the amount of data corruption into classes that each represents various degrees of degradation of the computer-generated video images.

Using graphics processing unit ('GPU')-generated data in-situ to characterize the ability of a cable to carry digitized video

Disclosed are a GPU video data preprocessor, a computer device, an apparatus and a method for facilitating expeditious video transfer to graphics memory for enhancing display and video capture applications, among other things. In one embodiment, a graphics preprocessor is used to preprocess video for transit via a graphics processing unit ('GPU') directly to graphics memory without invoking a graphics driver. The graphics preprocessor includes an input configured to receive video data. It also includes a native data formatter coupled to the input and configured to format the video data as GPU data to conform with the architecture of the GPU. In at least one embodiment, the graphics preprocessor also includes a command execution unit, which can be configured to transmit an instruction executable by the GPU as a transmitted instruction to perform a graphics pipeline operation on the GPU data.

Preprocessor for formatting video into graphics processing unit ('GPU')-formatted data for transit directly to a graphics memory

Method and apparatus for protecting image content. In an embodiment, tags are used to identify how to alter image content. A graphics processor is configured to process the tags and to alter the image responsive to the tags. In another embodiment, a graphics processor is configured to alter image content unless a key is provided to the graphics processor.

Method and apparatus for content protection

A method for synchronizing two of more graphics processing units. The method includes the steps of determining whether the phase of a first timing signal of a first graphics processing unit and the phase of a second timing signal of a second graphics processing unit are synchronized, and adjusting the frequency of the first timing signal to the frequency of the second timing signal if the first timing signal and the second timing signal are not synchronized.

Method for synchronizing graphics processing units

A method and system for converting an image data generated by a graphics subsystem into a video format. In one embodiment, the method includes generating the image data, storing the image data in a buffer, capturing the buffer to convert the image data to a texture, mapping the texture to at least one polygon to create a formatted image, and converting the formatted image to a stream of data in the video format.

Transparent video capture from primary video surface

Encrypted graphics data is transmitted between systems or components of a system. The data is decrypted within a graphics processor or other recipient device that has been provided with an appropriate key. In one embodiment, encryption is performed by perturbing selected parameters of the graphics data so that the encrypted data can be used to generate a distorted image, and decryption is performed by reversing the perturbation.

Decryption of graphics data in a graphics processing pipeline

A method for testing synchronization between a first graphics processing unit coupled to a second graphics processing unit. The method includes detecting whether an incoming synchronization signal has been received, determining whether the incoming synchronization signal is received from one of the first graphics processing unit, the second graphics processing unit and an external synchronization signal, and indicating on a control panel one of a first and second synchronization input/output ports on one of the first graphics processing unit and the second graphics processing unit as an input port and the other one of the first and second synchronization input/output ports as an output port, if the incoming synchronization signal is received from the one of the first graphics processing unit and the second graphics processing unit.

Method for testing synchronization and connection status of a graphics processing unit module

A graphics processing unit, which includes a clock generator configured to generate a clock signal and a controller coupled to the clock generator. The controller is configured to receive the clock signal, compare the clock signal with a synchronization signal to generate a timing signal, and transmit the timing signal to a second graphics processing unit connected to the graphics processing unit.

Growing community of inventors

Menlo Park, CA, United States of America

Ian M Williams