Wei Xiong, 46Elk Grove, CA

6861937, Mar 1, 2005

Jun 25, 2002

10/180161

Aiguo Feng - Fremont CA, US
Dennis Rafferty - San Jose CA, US
Wei Xiong - Fremont CA, US
Yiming Huai - Pleasanton CA, US

Western Digital (Fremont), Inc. - Lake Forest CA

H01F005/00

336200, 360122, 360123, 156649

An enhanced inductive coil design for use in data storage magnetic disk drives with areal density over 35 Gb/in, features a double wound twin coil that is able to achieve a yoke length of 15 μm or less by reducing the insulation spacing between the two coils. The coil further presents improved reliability by reducing the possibility of occurrence of electrical shorting. The coil is made by forming two interleafing conductors on the same layer with a demesne process. A tri-level process is implemented in the layout of the first conductor to ensure that the coil width and spacing are uniform and even, in order for the second conductor to be wound therebetween. A conformal dielectric layer of approximately 0. 1 to 0. 2 μm in thickness is deposited between the two conductors and serves as insulation. The two conductors are formed by a copper seed layer plating process that eliminates potential damage to the conductors during production.

6888704, May 3, 2005

Jan 22, 2003

10/349470

Zhitao Diao - Fremont CA, US
Min Zhou - Fremont CA, US
Lifan Chen - Fremont CA, US
Wei Xiong - Fremont CA, US

Western Digital (Fremont), Inc. - Fremont CA

G11B005/39

3603241, 36032411, 36032412, 3603242

A method and system for providing a magnetoresistive sensor and a read head that includes the magnetoresistive sensor is disclosed. The method and system include providing a pinned layer, a nonmagnetic spacer layer and a composite sensor layer. The pinned layer has a first magnetization that is pinned in a particular direction. The nonmagnetic spacer layer resides between the composite sensor layer and the pinned layer. The composite sensor layer includes a CoFe layer and a composite layer adjacent to the CoFe layer. The composite layer includes CoFe and at least one of Ta, Hf, Ti, Nb, Zr, Au, Ag, Cu, B, C, O, Hand N.

7123769, Oct 17, 2006

Nov 9, 2001

10/008338

Wei Xiong - Fremont CA, US

ArcSoft, Inc. - Fremont CA

G06K 9/48

382199, 348700, 37524001, 382165, 382170, 382203

A video segment is processed to identify frames representing shot boundaries in the video segment. Initially, a partial block-based comparison technique is used to determine the amount of change (i. e. , a first difference) that occurs between a pair of distant (i. e. , not consecutive) frames. Additionally, edge and/or color differences are computed between the pair of frames to confirm that a change has occurred. If the change is confirmed, a step variable technique is used to locate the change between two consecutive frames between the distant frames. If the partial block-based comparison technique obtains a difference between the consecutive frames that exceeds the first threshold, then an abrupt change is detected. Otherwise, the edge and/or color differences are used to determine whether a gradual transition has occurred.

7221776, May 22, 2007

Oct 31, 2001

10/003329

Wei Xiong - Fremont CA, US

ArcSoft, Inc. - Fremont CA

G06K 9/00

382103, 382107

A video stabilization system processes a video segment to remove unwanted motion, resulting in a stabilized video segment. The video stabilization system tracks one or more features through multiple frames, identifies ideal positions for the features, and then generates information (e. g. , rotation, scaling, shearing, and/or translation) to transform all pixels in each frame to ideal positions based on the ideal positions of the features.

7376274, May 20, 2008

Aug 31, 2004

10/931612

Wei Xiong - Fremont CA, US

Sonic Solutions - Novato CA

G06K 9/68
G06K 9/34

382218, 382173

The present embodiments provide methods and apparatuses for use in searching and/or retrieving video data. Some embodiments provide method for use in searching video data, that extract a spatiotemporal representation of at least a portion of a query sequence of video data, produce a query slice image from the spatiotemporal representation of the at least the portion of the query sequence, extract a spatiotemporal representation of at least a portion of candidate video data, produce a candidate slice image from the spatiotemporal representation of the at least the portion of the candidate video data, and determine when the query slice image matches at least a portion of the candidate slice image. In some embodiments, an apparatus is provided for use with video data. The apparatus comprises a memory storing candidate video data and a query sequence, a slice generator and a two-dimensional image generator.

7519236, Apr 14, 2009

Apr 9, 2003

10/411532

Min Cheng - Hangzhou, CN
Wei Xiong - Fremont CA, US
Lingxiang Zhou - Fremont CA, US

ArcSoft, Inc. - Fremont CA

G06K 9/62
G06K 9/60

382305, 382209

A method for searching an image database includes capturing an image of a photograph and a background, determining a boundary of the photograph in the image, cropping the photograph from the image, correcting the perspective of the photograph, compensating colors of the photograph, and matching the photograph with an image in the image database.

7660569, Feb 9, 2010

Sep 6, 2006

11/517118

Wei Xiong - Menlo Park CA, US

QUALCOMM Incorporated - San Diego CA

H04B 1/10

455296, 4552391

Methods and apparatus for digital jammer detection. In an aspect, a method is provided for detecting a jammer in a received waveform. The method includes filtering the received waveform to produce a filtered waveform and subtracting the filtered waveform from the received waveform to produce a difference waveform. The method also includes determining a power differential associated with the difference waveform, and detecting the jammer if the power differential exceeds a selected threshold. In an aspect, an apparatus is provided that includes a filter configured to filter the received waveform to produce a filtered waveform and combining logic configured to subtract the filtered waveform from the received waveform to produce a difference waveform. The apparatus also includes power determination logic configured to determine a power differential associated with the difference waveform, and decision logic configured to detect the jammer if the power differential exceeds a selected threshold.

2013000, Jan 10, 2013

Sep 27, 2011

13/245955

Ming gao YAO - DongGuan, CN
Koyu Yamanoi - Hong Kong, CN
Wei Xiong - Santa Clara CA, US

SAE Magnetics (H.K.) Ltd. - Hong Kong

G01R 1/20
H05K 3/10
H05K 3/36

29830, 324126

An electrical current sensor device includes a first printed circuit board assembly, a second printed circuit board assembly positioned opposite to the first printed circuit board assembly, and a holder holding the first and second printed circuit board assemblies and providing a passage to allow an electrical conductor to pass through. The first printed circuit board assembly includes a first sensing circuit having a first element pair that includes two magnetoresistive elements with a first pinning direction, the second printed circuit board assembly comprises a second sensing circuit with a second element pair that includes having two magnetoresistive elements with a second pinning direction that is opposite to the first pinning direction, and the first and second pinning directions are perpendicular to a current direction of a current passing through the electrical conductor, the first sensing circuit electrically connects with the second sensing circuit to form a Wheatstone bridge circuit.