Haixia Shi

US Patent:

8245307, Aug 14, 2012

Filed:

Dec 18, 2006

Appl. No.:

11/641380

Inventors:

Brian S. Pharris - Sunnyvale CA, US
Jeffrey S. Tuckey - Los Gatos CA, US
Haixia Shi - Sunnyvale CA, US

Assignee:

NVIDIA Corporation - Santa Clara CA

International Classification:

H04L 9/00
H04L 9/32

US Classification:

726 27, 726 26, 713176

Abstract:

Methods, devices, and systems of protecting a secret are provided. Access to the secret is designed to be restricted to a code with a specific signature, or fingerprint. The signature of that code is used in the encryption of the secret, and other codes are prevented from using this signature to decrypt the secret. This restricted access to the secret prevents the secret from being easily compromised, for example, by preventing a change in the code.

US Patent:

8266448, Sep 11, 2012

Filed:

Dec 9, 2008

Appl. No.:

12/331242

Inventors:

Haixia Shi - Sunnyvale CA, US
David Wyatt - San Jose CA, US
Jeffrey Scott Tuckey - Los Gatos CA, US

Assignee:

NVIDIA Corporation - Santa Clara CA

International Classification:

G06F 12/14
G06F 7/04

US Classification:

713189, 726 26

Abstract:

A system, method, and computer program product are provided for generating and securing a program, and secrets including confidential keys, capable of being executed utilizing a processor to decrypt content. In operation, a second party's program for decrypting content from a third party is generated by a second party, and then secured in a process involving the second party in such a manner that it can be subsequently executed on the processor, without revealing the contents of the second party's program, nor any secrets provided by third party, or used by the second party, in securing the program, nor any portion of the third party's content while being handled by the program.

US Patent:

8373708, Feb 12, 2013

Filed:

Jul 30, 2008

Appl. No.:

12/182776

Inventors:

Amit D. Parikh - Santa Clara CA, US
Haixia Shi - Sunnyvale CA, US
Franck R. Diard - Mountain View CA, US
Xun Wang - San Jose CA, US

Assignee:

NVIDIA Corporation - Santa Clara CA

International Classification:

G06F 15/16

US Classification:

345502, 345503, 345505, 345506, 713190

Abstract:

A video processing system, method, and computer program product are provided for encrypting communications between a plurality of graphics processors. A first graphics processor is provided. Additionally, a second graphics processor in communication with the first graphics processor is provided for collaboratively processing video data. Furthermore, such communication is encrypted.

US Patent:

8402280, Mar 19, 2013

Filed:

Oct 15, 2009

Appl. No.:

12/580021

Inventors:

Haixia Shi - Sunnyvale CA, US
Xiaohua Yang - San Jose CA, US

Assignee:

NVIDIA Corporation - Santa Clara CA

International Classification:

G06F 12/14

US Classification:

713189, 726 26

Abstract:

A system, method, and computer program product are provided for buffering an audio video (AV) stream, audio/video header information, and an audio/video elementary stream for hardware audio/video digital rights management (DRM) processing. In operation, an AV stream encrypted under a shared symmetric key in an M2TS format is buffered, where the AV stream includes content including at least one of audio or video and all content data associated with the AV stream is removed at picture level and below, with the exception of content headers associated with the content data. Additionally, content header information encrypted under the shared symmetric key is buffered, the content header information indicating locations of the content headers associated with the content data. Further, a content elementary stream encrypted under a hardware secret key is buffered for consumption of a hardware bit stream decoding engine.

US Patent:

20100146293, Jun 10, 2010

Filed:

Dec 9, 2008

Appl. No.:

12/331266

Inventors:

Haixia Shi - Sunnyvale CA, US
Jeffrey Scott Tuckey - Los Gatos CA, US
David Wyatt - San Jose CA, US

International Classification:

G06F 21/00

US Classification:

713189

Abstract:

An apparatus, system, method, and computer program product are provided for executing a program provided a second party utilizing a processor to generate keys for decrypting content of a third party. In operation, content and a program to confidentially generate keys for decrypting the content of the third party are received at a processor. Additionally, the second party's program is executed utilizing the processor-derived keys to decrypts the third party's content.

US Patent:

20100146501, Jun 10, 2010

Filed:

Dec 9, 2008

Appl. No.:

12/331295

Inventors:

David Wyatt - San Jose CA, US
Haixia Shi - Sunnyvale CA, US
Jeffrey Scott Tuckey - Los Gatos CA, US

International Classification:

G06F 9/455

US Classification:

718 1

Abstract:

A secure virtual machine system, method, and computer program product implemented on a processor are provided for processing a third party's content for output. At least one processor is provided. Additionally, at least one secure virtual machine implemented on the processor is provided for interpreting a second party's program that processes and outputs a third party's content. The virtual machine system abstracts the underlying processor hardware allowing implementation variations across products to execute the same program identically. Furthermore, the scope of the programmable operations, the types of input & output variables, and execution of programs within the processor, is deliberately constrained within the virtual machine environment, in order to mitigate potential security leaks by programs, and to ensure confidentiality of second party's secrets, and third party's content as managed by the second party's program.

US Patent:

20140153635, Jun 5, 2014

Filed:

Dec 5, 2012

Appl. No.:

13/706302

Inventors:

- Santa Clara CA, US
Haixia Shi - Sunnyvale CA, US
Olivier Lapicque - San Jose CA, US
Xiaohua Yang - San Jose CA, US

Assignee:

NVIDIA Corporation - Santa Clara CA

International Classification:

H04N 7/26

US Classification:

37524002

Abstract:

A method, computer program product, and system are provided for multi-threaded video encoding. The method includes the steps of generating a set of motion vectors in a hardware video encoder based on a current frame of a video stream and a reference frame of the video stream, dividing the current frame into a number of slices, encoding each slice of the current frame based on the set of motion vectors, and combining the encoded slices to generate an encoded bitstream.