Jian Xu

US Patent:

6683513, Jan 27, 2004

Filed:

Oct 24, 2001

Appl. No.:

10/000471

Inventors:

Khosro Shamsaifar - Ellicott City MD
Jian Xu - Clarksville MD

Assignee:

Paratek Microwave, Inc. - Columbia MD

International Classification:

H01P 1213

US Classification:

333135, 333209

Abstract:

A diplexer includes a first tunable bandpass filter connected to a first port, a second tunable bandpass filter connected to a second port, and a coupling element for coupling the first bandpass filter and the second bandpass filter to a third port. Each of the tunable bandpass filters includes a tunable capacitor, wherein a control signal applied to the tunable capacitor controls the transmission characteristic of the filter. The tunable capacitor can be a tunable dielectric varactor or a microelectromechanical variable capacitor. The coupling element can include one of: a circulator, a T-junction, and an orthomode transducer. Each of the first and second filters can comprise a fin line filter including a plurality of tunable dielectric capacitors mounted within a waveguide for controlling the filter transmission characteristics. Fixed bandpass filters can be inserted between each of the tunable bandpass filters and the coupling element.

US Patent:

7073952, Jul 11, 2006

Filed:

Jun 5, 2002

Appl. No.:

10/163405

Inventors:

Frank Xi Wu - Fremont CA, US
Jian Xu - Pleasanton CA, US
Ming Li - Pleasanton CA, US
Song Peng - Pleasanton CA, US

Assignee:

Avanex Corporation - Fremont CA

International Classification:

G02B 6/26
G02B 7/00

US Classification:

385 62, 385 90, 385 28, 359896, 24828831

Abstract:

An optical alignment device holds fiber collimators in place with extremely good mechanical and environmental stability. The device includes a ball with a hole traversing the ball, an upper clamping block with a first inner concave spherical surface and a lower clamping block with a second inner concave spherical surface. The hole includes a shape that can accommodate or contact an optical component whose alignment is to be controlled. The ball, together with the enclosed optical component is firmly held between the first and second inner concave surfaces of the clamping blocks, which are tightened against the ball with screws. When firmly clamped within the concave surfaces, the ball is prevented from accidental movement but can still rotate about any axis to align the optical component. Once alignment is achieved, the optical component and the ball are secured in place by epoxy, glue, solder or other suitable adhesive.

US Patent:

7437464, Oct 14, 2008

Filed:

Jan 31, 2003

Appl. No.:

10/355264

Inventors:

Jian Xu - Herndon VA, US
Chung-Wen Yuan - North Potomac MD, US

Assignee:

Federal Home Loan Mortgage Corporation - McLean VA

International Classification:

G06F 15/16

US Classification:

709227, 709228, 709229

Abstract:

Systems and methods are provided for providing asynchronous communication between a source processor and a destination processor. In one embodiment, a method includes receiving an information request; making a first call to the destination processor, such that the first call includes the information request; and ending the first call while the destination processor determines an information response, such that said ending terminates a synchronous communication between the source processor and the destination processor. Furthermore, the method includes making a second call to the source processor, such that the second call includes the information response; ending the second call, such that said ending terminates a synchronous communication between the destination processor and the source processor; and providing asynchronously the information response.

US Patent:

20130218979, Aug 22, 2013

Filed:

Feb 16, 2012

Appl. No.:

13/398228

Inventors:

Miro Vins - Palo Alto CA, US
Vincent Mendicino - San Mateo CA, US
Dirk Wodtke - Soquel CA, US
Chinmaya Sarangi - Sunnyvale CA, US
Jian Xu - Santa Clara CA, US
Andrew Ng - Palo Alto CA, US
Neil Srivatsan - Santa Clara CA, US
Yingjiong He - San Jose CA, US
Werner Gnan - Angelbachtal, DE
Peter Latocha - Malsch, DE
Michael Seubert - Sinsheim, DE

International Classification:

G06F 15/16

US Classification:

709206

Abstract:

A business object model, which reflects data that is used during a given business transaction, is utilized to generate interfaces. This business object model facilitates commercial transactions by providing consistent interfaces that are suitable for use across industries, across businesses, and across different departments within a business during a business transaction. In some operations, software creates, updates, or otherwise processes information related to a feed collaboration group and/or a feed event subscription business object.

US Patent:

20130218980, Aug 22, 2013

Filed:

Feb 16, 2012

Appl. No.:

13/398269

Inventors:

Miro Vins - Palo Alto CA, US
Vincent Mendicino - San Mateo CA, US
Dirk Wodtke - Soquel CA, US
Chinmaya Sarangi - Sunnyvale CA, US
Jian Xu - Santa Clara CA, US
Andrew Ng - Palo Alto CA, US
Neil Srivatsan - Santa Clara CA, US
Yingjiong He - San Jose CA, US
Werner Gnan - Angelbachtal, DE
Peter Latocha - Malsch, DE
Michael Seubert - Sinsheim, DE

International Classification:

G06F 15/16

US Classification:

709206

Abstract:

A business object model, which reflects data that is used during a given business transaction, is utilized to generate interfaces. This business object model facilitates commercial transactions by providing consistent interfaces that are suitable for use across industries, across businesses, and across different departments within a business during a business transaction. In some operations, software creates, updates, or otherwise processes information related to a user feed administrator, a user feed event link and/or a user feed settings business object.

US Patent:

20130219292, Aug 22, 2013

Filed:

Feb 16, 2012

Appl. No.:

13/398264

Inventors:

Miro Vins - Palo Alto CA, US
Vincent Mendicino - San Mateo CA, US
Dirk Wodtke - Soquel CA, US
Chinmaya Sarangi - Sunnyvale CA, US
Jian Xu - Santa Clara CA, US
Andrew Ng - Palo Alto CA, US
Neil Srivatsan - Santa Clara CA, US
Werner Gnan - Angelbachtal, DE
Peter Latocha - Malsch, DE
Michael Seubert - Sinsheim, DE
Yingjiong He - San Jose CA, US

International Classification:

G06F 3/00

US Classification:

715751

Abstract:

A business object model, which reflects data that is used during a given business transaction, is utilized to generate interfaces. This business object model facilitates commercial transactions by providing consistent interfaces that are suitable for use across industries, across businesses, and across different departments within a business during a business transaction. In some operations, software creates, updates, or otherwise processes information related to a feed event, a feed event document, and/or a feed event type business object.

US Patent:

20160180372, Jun 23, 2016

Filed:

Dec 19, 2014

Appl. No.:

14/577223

Inventors:

- Sunnyvale CA, US
Kuang-chih Lee - Union City CA, US
Donglin Niu - Sunnyvale CA, US
Jian Xu - San Jose CA, US

International Classification:

G06Q 30/02
G06N 5/04
G06N 7/00

Abstract:

A computer system implementing a method for ad realization prediction may be configured to receive a plurality of target realization factors associated with a target ad display opportunity; determine a reference realization probability score of the target ad display opportunity based on a global reference realization probability distribution associated with an ad display realization probability decision tree; using the reference realization probability score, determine an ad realization probability score of the target ad display opportunity according to a piecewise calibrated realization probability function; and return the ad realization probability score.