Wei Li

US Patent:

6811610, Nov 2, 2004

Filed:

Jun 3, 2002

Appl. No.:

10/161266

Inventors:

Robert H. Frushour - Ann Arbor MI
Wei Li - Ann Arbor MI

Assignee:

Diamond Innovations, Inc. - Worthington OH

International Classification:

C23C 1627

US Classification:

117 88, 4272497, 4272498, 427370, 4273722, 427444, 427902

Abstract:

Single crystal CVD diamond is heated to temperatures of 1500Â C. to 2900Â C. under a pressure that prevents significant graphitization. The result is a CVD diamond with improved optical properties.

US Patent:

7188323, Mar 6, 2007

Filed:

Jul 15, 2004

Appl. No.:

10/892022

Inventors:

Seongmoon Wang - Plainsboro NJ, US
Wei Li - Iowa City IA, US
Srimat T. Chakradhar - Manalapan NJ, US

Assignee:

NEC Laboratories America, Inc. - Princeton NJ

International Classification:

G06F 17/50

US Classification:

716 4, 716 5, 716 1

Abstract:

Disclosed is a method and apparatus for improved delay fault testing by optimizing the order of scan cells in a scan chain. The order of the scan cells is determined by using a cost value for an order of scan cells, the cost value being computed from costs assigned to orderings of individual pairs of scan cells. These costs can be based on the number of faults that are untestable when the pair of scan cells are placed consecutively in the scan chain. The disclosed techniques allow for enhanced delay fault coverage by rearranging scan flip-flops without increasing routing overhead.

US Patent:

7460119, Dec 2, 2008

Filed:

Sep 26, 2005

Appl. No.:

11/235408

Inventors:

Wei Li - East Brunswick NJ, US

Assignee:

Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

G06T 15/40

US Classification:

345421

Abstract:

A method of accelerating texture-based volume rendering is provided. The method includes the following steps. A plurality of levels of granularity comprising a plurality of sub-volumes organized in a hierarchical structure are built. The hierarchical structure is ordered top-down from a coarsest level of granularity to a finest level of a granularity. A visibility factor is determined for each of the plurality of sub-volumes. The visibility factor represents a ratio of visible voxels in the corresponding sub-volume. The plurality of sub-volumes are traversed top-down from the coarsest level of granularity to the finest level of granularity. While traversing each of the plurality of sub-volumes, the corresponding sub-volume is rendered and all children of the rendered sub-volume are skipped, if the visibility factor is greater than given threshold.

US Patent:

RE41189, Apr 6, 2010

Filed:

Jan 30, 2009

Appl. No.:

12/362529

Inventors:

Wei Li - Ann Arbor MI, US
Russell J. Hemley - Washington DC, US
Ho-kwang Mao - Washington DC, US

Assignee:

Carnegie Institution of Washington - Washington DC

International Classification:

C23C 16/27

US Classification:

117 88, 4272497, 4272498, 427370, 4273722, 427444, 427902

Abstract:

Single crystal CVD diamond is heated to temperatures of 1500 C. to 2900 C. under a pressure that prevents significant graphitization. The result is a CVD diamond with improved optical properties.

US Patent:

7711162, May 4, 2010

Filed:

Sep 26, 2005

Appl. No.:

11/235410

Inventors:

Wei Li - East Brunswick NJ, US

Assignee:

Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

G06K 9/00
G06K 9/32
G06T 15/40

US Classification:

382128, 382294, 345421

Abstract:

An exemplary method of combining two images to form a fused image is provided. A hierarchical structure for each of a plurality of volumes is built. All blocks in each of the hierarchical structures that intersect a slicing plane are found. Each of the plurality of volumes is divided into stacks of parallel slices, and the parallel slices are sorted by visibility order. A next slice in the sorted parallel slices is chosen. The next slice belongs to a current volume. Rendering parameters are changed if the current volume is different from a previous volume associated with the chosen slice in a previous iteration of the step of choosing the slice. Based on the rendering parameters, the next slice is rendered by intersecting the slicing plane with the blocks corresponding to the current volume. The steps of choosing the slice, changing the rendering parameters, and rendering the slice are repeated until all of the sorted parallel slices are rendered.

US Patent:

7773086, Aug 10, 2010

Filed:

Mar 19, 2007

Appl. No.:

11/687728

Inventors:

Wei Li - Princeton NJ, US
Daphne Yu - Yardley PA, US

Assignee:

Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

G06T 17/00

US Classification:

345420, 345419, 345421, 345423, 345424, 345426, 345427, 382241, 369 1335

Abstract:

Rendering with a punching mask is performed without voxelization. A plurality of sub-volumes are identified as a function of the punching mask. The sub-volumes are generally layered in range. Each sub-volume is rendered separately or independently. The renderings from multiple passes or sub-volumes are composited together.

US Patent:

7843452, Nov 30, 2010

Filed:

May 30, 2007

Appl. No.:

11/755256

Inventors:

Wei Li - Princeton NJ, US

Assignee:

Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

G06T 17/00

US Classification:

345424

Abstract:

A method for rendering a two-dimensional image comprising: (a) obtaining a first three-dimensional set of data for a relatively high quality image; (b) generating a second three-dimensional set of data for a relatively low quality image from the obtained three-dimensional set of data; (c) rendering a relatively low quality two-dimensional image from second three-dimensional set of data; (d) rendering a first portion of a relatively high quality two-dimensional image from a first portion of the first three-dimensional set of data; (e) blending the rendered low quality two-dimensional image with relatively high quality two-dimensional image; (f) rendering a second portion of a relatively high quality two-dimensional image from a different portion of the first three-dimensional set of data; and (g) blending the rendered low quality two-dimensional image from second three-dimensional set of data with relatively high quality two-dimensional image from the second portion of the first three-dimensional set of data. The process repeats until the entire image is rendered.

US Patent:

7911474, Mar 22, 2011

Filed:

Feb 28, 2007

Appl. No.:

11/679990

Inventors:

Wei Li - Princeton NJ, US
Gianluca Paladini - Skillman NJ, US

Assignee:

Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

G06F 13/00

US Classification:

345538, 345419, 345536, 345537, 345543, 345557

Abstract:

A memory manager interfaces between a rendering application and the driver controlling one or more memories. A multi-level brick cache system caches bricks in a memory hierarchy to accelerate the rendering. One example memory hierarchy may include system memory, AGP memory, and graphics memory. The memory manager allows control of brick overwriting based on current or past rendering. Since different memories are typically available, one or more memory managers may control storage of bricks into different memories to optimize rendering. Management of different memory levels, overwriting based on current or previous rendering, and an interfacing memory manager may each be used alone or in any possible combination.