Yu Liu

US Patent:

7639609, Dec 29, 2009

Filed:

Jul 15, 2007

Appl. No.:

11/778053

Inventors:

Gordon Bolt - Apex NC, US
Edward A. Sykes - Cary NC, US
Yu Liu - San Jose CA, US

Assignee:

OPNET Technologies, Inc. - Bethesda MD

International Classification:

H04L 12/26
G06F 15/177

US Classification:

370229, 370237, 370250, 370252, 709220, 709223

Abstract:

An existing network configuration is assessed, and potential changes to the existing configuration are identified that provide the greatest incremental improvements to the performance of the network. In a preferred embodiment, the user of the system identifies the maximum number (N) of changes that may be implemented in an existing network, and the system provides a set of possible reconfigurations, each requiring fewer than N changes. The user is presented a display of the potential improvement provided by each set as a function of the number of changes in the set, so that the relative incremental gain can be easily visualized. The objective function of the optimization may include conventional load-balancing objectives, or other objectives, such as a global minimization of path lengths.

US Patent:

7742177, Jun 22, 2010

Filed:

Jan 22, 2008

Appl. No.:

12/018028

Inventors:

Shifang Li - Pleasanton CA, US
Yu Liu - Sunnyvale CA, US

Assignee:

Tokyo Electron Limited - Tokyo

International Classification:

G01B 11/14

US Classification:

356625

Abstract:

The invention can provide apparatus and methods for processing wafers using Noise-Reduction (N-R) metrology models that can be used in Double-Patterning (D-P) processing sequences, Double-Exposure (D-E) processing sequences, or other processing sequences.

US Patent:

7889641, Feb 15, 2011

Filed:

Jul 18, 2007

Appl. No.:

11/779429

Inventors:

Yu Liu - San Jose CA, US
Gordon Bolt - Apex NC, US
Edward Sykes - Cary NC, US

Assignee:

Opnet Technologies, Inc. - Bethesda MD

International Classification:

G06F 11/00

US Classification:

370228

Abstract:

A path-flow formulation of defining MPLS FRR bypass LSPs is presented. The path-flow formulation comprises first identifying a set of candidate bypass LSPs, each of which meets various network constraints and has an explicit route around a network facility to be protected. The constraints may include Quality of Service (QoS) guarantees, implementation requirements, network element resource limitations, and resiliency requirements. The constraints may be user-selected, and may be non-linear. The set of candidate bypass LSPs form a linear programming (LP) problem, or an integer linear programming (ILP) problem if the allowable number of bypass LSPs is constrained. In an optimization step, LP solutions are used to select the bypass LSPs from among the candidate bypass LSPs by allocating bandwidth to them.

US Patent:

20120265061, Oct 18, 2012

Filed:

Oct 31, 2011

Appl. No.:

13/285167

Inventors:

John SLIWA - Los Altos Hills CA, US
Yu LIU - Irvine CA, US

Assignee:

ST. JUDE MEDICAL, INC. - St. Paul MN

International Classification:

A61B 6/00
A61B 8/00

US Classification:

600427, 600425

Abstract:

A method for performing elastographic deformation mapping of tissues and plaques comprises: introducing a distal portion of a catheter to an interior of an interior body of a patient; applying, from a palpator in the distal portion, one of a directed fluid or a mechanical indenter to produce a surface-applied palpation force to a target area of the interior body to mechanically displace the interior body and cause elastographic deformation of the target area of one or more surface and subsurface tissues and plaques; and directing and delivering an OCT (optical coherence tomography) beam, from an OCT imaging sensor in the distal portion, for OCT deformation detection including elastographic deformation measurement to provide elastographic mapping of the target area.

US Patent:

20120265062, Oct 18, 2012

Filed:

Oct 31, 2011

Appl. No.:

13/285178

Inventors:

John SLIWA - Los Altos Hills CA, US
Yu LIU - Irvine CA, US

Assignee:

ST. JUDE MEDICAL, INC. - St. Paul MN

International Classification:

A61B 6/00
A61B 8/00

US Classification:

600427, 600425

Abstract:

An optical coherence tomography (OCT) catheter, for performing high performance elastographic deformation mapping of tissues and plaques, comprises: a catheter having elongated catheter body extending longitudinally between a proximal end and a distal end along a longitudinal axis, the catheter body including a distal portion at the distal end and a catheter lumen; a palpator, disposed in the distal portion, to apply one of a directed fluid or a mechanical indenter to produce a surface-applied palpation force to a target area of the interior body to mechanically displace the interior body and cause elastographic deformation of the target area of one or more surface and subsurface tissues and plaques; and OCT imaging sensor, disposed in the distal portion, to direct and deliver OCT beam for OCT deformation detection including elastographic deformation measurement to provide elastographic mapping of the target area.

US Patent:

20130031378, Jan 31, 2013

Filed:

Jul 26, 2011

Appl. No.:

13/190860

Inventors:

Frederick R. Schindler - Sunnyvale CA, US
Yu Liu - Mountain View CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G06F 1/00

US Classification:

713300

Abstract:

An apparatus and method for transferring power in an inline switch device are provided. The method comprises drawing power from an inline power source and transferring, by the powered device subsystem, a portion of the power that is not consumed by the powered device subsystem to one or more connected powered devices. The method further comprises determining a limit of current drawn by the powered device subsystem during transfer of power by the powered device subsystem to the one or more powered devices that results in the transfer of a desired amount of power to the one or more powered devices, and adjusting the limit for the current drawn by the powered device subsystem to the determined current limit.

US Patent:

20220309046, Sep 29, 2022

Filed:

Mar 29, 2021

Appl. No.:

17/215865

Inventors:

- San Jose CA, US
Yu Liu - Milpitas CA, US

International Classification:

G06F 16/215

Abstract:

A first group of chunk identifiers associated with a first content identifier structure of a first metadata element and a second group of chunk identifiers associated with a second content identifier structure of a second metadata element are determined. A common sequence of chunk identifiers across at least a portion of the first group of chunk identifiers associated with the first content identifier structure and the second group of chunk identifiers associated with the second content identifier structure is determined. A portion of the first group of chunk identifiers associated with the first content identifier structure and a portion of the second group of chunk identifiers associated with the second content identifier structure is updated to reference a common sequence identifier in place of the determined common sequence of chunk identifiers.

US Patent:

20220248074, Aug 4, 2022

Filed:

Apr 22, 2022

Appl. No.:

17/727387

Inventors:

- Menlo Park CA, US
Haixiong Wang - Sunnyvale CA, US
Yun Zhang - Newark CA, US
Yu Liu - Sunnyvale CA, US
David Wolstencroft - Carlsbad CA, US
Cosmin Vasile Stejerean - Las Vegas NV, US
Sonal Gandhi - Seattle WA, US
Minchuan Chen - Redmond WA, US
Pankaj Sethi - Palo Alto CA, US
Amit Puntambekar - Santa Clara CA, US
Michael Hamilton Coward - Menlo Park CA, US
David Ronca - Campbell CA, US
Ioannis Katsavounidis - San Jose CA, US
Zhen Liao - Los Altos CA, US
Wenting Wang - Menlo Park CA, US
Bi Xue - Palo Alto CA, US
Hong Yan - Los Altos CA, US
Guangdeng Liao - Los Altos Hills CA, US
Yinzhe Yu - Palo Alto CA, US
Qunshu Zhang - Sammamish WA, US
Xiaoxing Zhu - Bellevue WA, US
Yangpeng Ou - Redmond WA, US
Jacob Matthew Okamoto - St. Paul MN, US
Francisco Javier Merino Guardiola - Madrid, ES
Carlos Lopez Menendez - Madrid, ES
Christopher Wickersham Clark - Seattle WA, US
Puttaswamy Rahul Gowda - Berkeley CA, US
Yi Liu - Bellevue WA, US
Qi Ding - Seattle WA, US
Junjin Pu - Seattle WA, US
Sakphong Chanbai - Bellevue WA, US
Ming Cao - Bellevue WA, US

International Classification:

H04N 21/2662
H04N 21/239
H04N 21/443
H04N 21/24
G06F 16/738

Abstract:

The disclosed computer-implemented method may include a process for monitoring and improving end-to-end video quality based on scaled and/or interpolated perceptual quality scores across various video views. The method may also include a process for improving search experience for user expectations. Additionally, the method may include a process for providing hardware virtualization and simulation for server hosting. Furthermore, the method may include a process for filtering network traffic in a hosting environment. The method may additionally include a process for testing applications in a hosting environment. The method may further include a process for supporting multi-touch applications. The method may also include a process for optimized graphics rendering. Various other related methods and systems are also disclosed.