Weimin Min Liu

US Patent:

6560378, May 6, 2003

Filed:

Aug 2, 2001

Appl. No.:

09/921791

Inventors:

Weimin Liu - Sunnyvale CA
Li Wang - San Jose CA

Assignee:

Alliance Fiber Optic Products, Inc. - Sunnyvale CA

International Classification:

G02B 600

US Classification:

385 11, 354483, 354494, 385 33, 385 34

Abstract:

The present invention, generally speaking, provides compact design of optical couplers for combining two differently polarized light beams onto a collimator or splitting a composed light beam into two differently polarized light beams. According to another embodiment, the size of the polarization beam combiner is minimized by using a pair of specially designed fiber collimators that use an asymmetrical sleeve. As a result, a coupler, according to the present invention, uses less components, is of small in size and provides an easy-aligning structure. Further the coupler offers lower optical insertion loss with minimized physical size.

US Patent:

7907608, Mar 15, 2011

Filed:

Aug 12, 2005

Appl. No.:

11/202438

Inventors:

Weimin Liu - Sunnyvale CA, US
Erik de la Iglesia - Mountain View CA, US
William Deninger - San Jose CA, US
Rick Lowe - Menlo Park CA, US
Stephen Broeker - Mountain View CA, US

Assignee:

McAfee, Inc. - Santa Clara CA

International Classification:

H04L 12/28
H04L 12/56

US Classification:

370389, 379242, 710316

Abstract:

Packets can be read from a network interface into an application using a single kernel copy. In one embodiment, the invention includes a receiver packet memory to store captured packets, and a network interface driver operating in a kernel of a device to read packets captured by network interface hardware into the kernel by storing captured packets in the receiver packet memory. Then, an application interface can expose the receiver packet memory to an application executing on the device by representing the receiver packet memory as a virtual file.

US Patent:

7949849, May 24, 2011

Filed:

Jun 27, 2005

Appl. No.:

11/168104

Inventors:

Rick Lowe - Atherton CA, US
Stephen Broeker - Sunnyvale CA, US
Weimin Liu - Sunnyvale CA, US

Assignee:

McAfee, Inc. - Santa Clara CA

International Classification:

G06F 12/00
G06F 17/00

US Classification:

711173, 707799, 707823, 709224

Abstract:

A file system can be provided in a capture system to efficiently read and write captured objects. In one embodiment, such a file system includes a plurality of queues to queue captured objects to be written to a disk, each queue being associated with one of a plurality of object types, and each queue containing captured objects of the type associated with each queue. A scheduler can be provided to select one of the plurality of queues, and a block manager to select a partition of a disk, the partition being associated with the object type of the captured objects in the selected queue. A disk controller configured to write contiguous blocks of data from the selected queue to the selected partition is connected to the block manager to enable writing to a disk.

US Patent:

8205242, Jun 19, 2012

Filed:

Jul 10, 2008

Appl. No.:

12/171232

Inventors:

Weimin Liu - Palo Alto CA, US

Assignee:

McAfee, Inc. - Santa Clara CA

International Classification:

G06F 17/00

US Classification:

726 1, 726 11

Abstract:

A system and method to generate and maintain controlled growth DAG are described. The controlled growth DAG conveys information about objects captured by a capture system.

US Patent:

8601537, Dec 3, 2013

Filed:

Mar 19, 2012

Appl. No.:

13/424249

Inventors:

Weimin Liu - Palo Alto CA, US

Assignee:

McAfee, Inc. - Santa Clara CA

International Classification:

G06F 17/00

US Classification:

726 1

Abstract:

A system and method to generate and maintain controlled growth DAG are described. The controlled growth DAG conveys information about objects captured by a capture system.

US Patent:

8635706, Jan 21, 2014

Filed:

Mar 16, 2012

Appl. No.:

13/422791

Inventors:

Weimin Liu - Palo Alto CA, US

Assignee:

McAfee, Inc. - Santa Clara CA

International Classification:

G06F 7/04

US Classification:

726 26, 726 1

Abstract:

A system and method to generate and maintain controlled growth DAG are described. The controlled growth DAG conveys information about objects captured by a capture system.

US Patent:

20030186279, Oct 2, 2003

Filed:

Dec 10, 2002

Appl. No.:

10/316517

Inventors:

Giulia Kennedy - San Francisco CA, US
Hajime Matsuzaki - Palo Alto CA, US
Shoulian Dong - San Jose CA, US
Xing Su - Cupertino CA, US
Keith Jones - Sunnyvale CA, US
Weimin Liu - Indianapolis IN, US

Assignee:

Affymetrix, INC. - Santa Clara CA

International Classification:

C12Q001/68
C12P019/34

US Classification:

435/006000, 435/091200

Abstract:

In one embodiment of the invention, methods are provided for genotyping a large number of SNPs. The methods include a sample preparation protocol that requires only few primers and few reaction vessels.

US Patent:

20110149959, Jun 23, 2011

Filed:

Feb 10, 2011

Appl. No.:

13/024923

Inventors:

Weimin Liu - Sunnyvale CA, US
Erik de la Iglesia - Mountain View CA, US
William Deninger - San Jose CA, US
Rick Lowe - Menlo Park CA, US
Stephen Broeker - Mountain View CA, US

International Classification:

H04L 12/56

US Classification:

370389

Abstract:

Packets can be read from a network interface into an application using a single kernel copy. In one embodiment, the invention includes a receiver packet memory to store captured packets, and a network interface driver operating in a kernel of a device to read packets captured by network interface hardware into the kernel by storing captured packets in the receiver packet memory. Then, an application interface can expose the receiver packet memory to an application executing on the device by representing the receiver packet memory as a virtual file.