Liang P Peng

US Patent:

6593923, Jul 15, 2003

Filed:

Aug 16, 2000

Appl. No.:

09/640505

Inventors:

Walter E. Donovan - Milpitas CA
Liang Peng - Sunnyvale CA

Assignee:

Nvidia Corporation - Santa Clara CA

International Classification:

G06T 1500

US Classification:

345422

Abstract:

A system, method and article of manufacture are provided for shadow mapping while rendering a primitive in a graphics pipeline. Initially, an offset operation is performed in order to generate a depth value while rendering a primitive. Further, a value of a slope associated with an edge of the primitive is identified. Thereafter, the depth value is conditionally clamped based on the value of the slope.

US Patent:

6690372, Feb 10, 2004

Filed:

Dec 5, 2000

Appl. No.:

09/730639

Inventors:

Walter E. Donovan - Milpitas CA
Liang Peng - Sunnyvale CA

Assignee:

NVIDIA Corporation - Santa Clara CA

International Classification:

G06T 1500

US Classification:

345426

Abstract:

A system, method and article of manufacture are provided for shadow mapping while rendering a primitive in a graphics pipeline. Initially, an offset operation is performed in order to generate a depth value while rendering a primitive. Further, a value of a slope associated with an edge of the primitive is identified. Thereafter, the depth value is conditionally clamped based on the value of the slope.

US Patent:

7119806, Oct 10, 2006

Filed:

Sep 30, 2003

Appl. No.:

10/676788

Inventors:

Walter E. Donovan - Milpitas CA, US
Liang Peng - Sunnyvale CA, US

Assignee:

Nvidia Corporation - Santa Clara CA

International Classification:

G06T 15/00

US Classification:

345426

Abstract:

A system, method and article of manufacture are provided for shadow mapping while rendering a primitive in a graphics pipeline. Initially, an offset operation is performed in order to generate a depth value while rendering a primitive. Further, a value of a slope associated with an edge of the primitive is identified. Thereafter, the depth value is conditionally clamped based on the value of the slope.

US Patent:

8473681, Jun 25, 2013

Filed:

Feb 2, 2010

Appl. No.:

13/143993

Inventors:

Qi Lin - Los Altos Hills CA, US
Liang Peng - San Jose CA, US
Craig E. Hampel - Los Altos CA, US
Thomas J. Sheffler - San Francisco CA, US
Steven C. Woo - Saratoga CA, US
Bohuslav Rychlik - San Diego CA, US

Assignee:

Rambus Inc. - Sunnyvale CA

International Classification:

G06F 13/00

US Classification:

711121, 711124, 711141, 711E12023, 712 32

Abstract:

A cache-coherence protocol distributes atomic operations among multiple processors (or processor cores) that share a memory space. When an atomic operation that includes an instruction to modify data stored in the shared memory space is directed to a first processor that does not have control over the address(es) associated with the data, the first processor sends a request, including the instruction to modify the data, to a second processor. Then, the second processor, which already has control of the address(es), modifies the data. Moreover, the first processor can immediately proceed to another instruction rather than waiting for the address(es) to become available.

US Patent:

20060126726, Jun 15, 2006

Filed:

May 25, 2005

Appl. No.:

11/137971

Inventors:

Teng Lin - San Jose CA, US
Hongjun Yuan - San Jose CA, US
Weimin Zeng - San Jose CA, US
Liang Peng - San Jose CA, US

International Classification:

H04N 11/04
H04N 7/12
H04N 11/02
H04B 1/66

US Classification:

375240030, 375240250, 375240230, 375240240, 375240200, 375240120

Abstract:

In one embodiment, a DSP structure includes four main sections: DEQ, IDCT for row, IDCT for column, and motion compensation. The data input sequence is organized in such a way to facilitate the data loading into hardware structures for row IDCT and column IDCT. Two types of decoding flows are enabled by the DSP structure: H.264 decoding flows (e.g., dequantization, inverse discrete Hadamard transform, intra prediction, and motion decompensation), and non-H.264 decoding flows (e.g., dequantization, row inverse discrete cosine transformation, column inverse discrete cosine transformation, and motion decompensation). The non-H.264 decoding flow can be used for standards such as MPEG1/2/4, H.263, Microsoft WMV9, and Sony Digital Video.

US Patent:

20060126744, Jun 15, 2006

Filed:

Jul 13, 2005

Appl. No.:

11/181204

Inventors:

Liang Peng - San Jose CA, US
Ankur Shah - Sunnyvale CA, US

International Classification:

H04N 7/12
H04N 11/04
H04N 11/02
H04B 1/66

US Classification:

375240260, 375240250, 375240240

Abstract:

An architecture capable of stream parsing of the H.264 Content Based Adaptive Binary Arithmetic Coding (CABAC) format is disclosed. The architecture employs a two pass dataflow approach to implement the functions of CABAC bit parsing and decoding processes (based on the H.264 CABAC algorithm). The architecture can be implemented, for example, as a system-on-chip (SOC) for a video/audio decoder for use high definition television broadcasting (HDTV) applications. Other such video/audio decoder applications are enabled as well.

US Patent:

20090195541, Aug 6, 2009

Filed:

Jan 29, 2009

Appl. No.:

12/362122

Inventors:

Liang Peng - San Jose CA, US
Wei-Wen Feng - Urbana IL, US

Assignee:

RAMBUS INC. - Los Altos CA

International Classification:

G06T 17/00

US Classification:

345420

Abstract:

The present embodiments provide a system for graphically rendering an object. This system operates first by pre-processing a geometry mesh for the object offline, wherein the geometry mesh is partitioned into a set of patches, and wherein each patch is bounded by a bounding box. The system then builds a multi-resolution representation for each of the set of patches. Next, during real time rendering, the system deforms the bounding boxes associated with the set of patches through superposition of object motions in each frame weighted by a set of predetermined mesh-skinning parameters. For each deformed bounding box, the system computes a geometry level-of-detail (LOD) value based on a projected area of the deformed bounding box in screen space. The system next deforms the object through a set of mesh skinning operations. The system then renders the deformed object based on the computed geometry LOD values for the set of patches and the multi-resolution representation for the geometry mesh.

US Patent:

20100325432, Dec 23, 2010

Filed:

Jun 23, 2009

Appl. No.:

12/489608

Inventors:

Norman Tang - Los Altos CA, US
Adam Jonathan Carter - San Jose CA, US
David C. Lai - Mountain View CA, US
Liang Ping Peng - Santa Clara CA, US
Guoying Ding - Sunnyvale CA, US

Assignee:

CISCO TECHNOLOGY, INC. - San Jose CA

International Classification:

G06F 21/24
G06Q 30/00
G06Q 50/00
H04L 9/32

US Classification:

713168, 705 26, 726 22

Abstract:

A method is provided, including (a) upon a standard small form-factor pluggable (SFP) module being inserted into an SFP jack on a network host device, determining if the SFP module is a legacy device or a smart device, (b) upon determining that the SFP module is a legacy device, receiving a magic code from the SFP module and determining if the magic code is a valid magic code, and (c) upon determining that the SFP module is a smart device, performing a smart authentication process with the SFP module. Associated apparatuses and additional methods are also provided.