Patents by Inventor Xuan Liu

Xuan Liu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20140192717
    Abstract: A method implemented by a network device residing in a service domain, wherein the network device comprises an information centric networking (ICN) transport layer and a service access layer (SAL) for handling context-aware service logistics and service mobility overlaid on the ICN transport layer, the method comprising receiving, in the ICN transport layer, a message comprising a service request that originates from a user equipment (UE), in the SAL, retrieving, from the service request, contextual information relevant to the UE or an access network connected to the UE, determining, based on the contextual information, one or more services needed to execute the service request, and determining one or more service identities (SIDs) each of which identifies one of the one or more services.
    Type: Application
    Filed: January 6, 2014
    Publication date: July 10, 2014
    Applicant: Futurewei Technologies, Inc.
    Inventors: Xuan Liu, Ravishankar Ravindran, Guo-Qiang Wang
  • Publication number: 20140160462
    Abstract: A system for assessing the flow of a fluid. The system can include a light source, a fiber-optic system optically coupled to the light source, which is arranged to provide a reference beam and an observation beam, an optical detection system arranged to receive combined light from the reference beam and the observation beam and to provide detection signals, and a data processing system arranged to communicate with the optical detection system to receive the detection signals. The data processing system can be configured to use the detection signals to determine a speckle pattern corresponding to the fluid flow, wherein the speckle pattern includes a plurality of lines, and to calculate a correlation between adjacent lines perpendicular to the flow to determine at least one of a rate of the flow and a displacement of the flow.
    Type: Application
    Filed: December 10, 2012
    Publication date: June 12, 2014
    Applicant: The Johns Hopkins University
    Inventors: Jin U. KANG, Xuan Liu
  • Publication number: 20140164390
    Abstract: Embodiments relate to generating a trajectory heat map at an aggregated level using computed transit points is provided. An aspect includes generating, by a processing device, a trajectory database from time-stamped global positioning system (GPS) sample points. According to exemplary embodiments, transit points are computed for each trajectory in the trajectory database. A temporal transit graph is constructed from the transit points. The transit graph of embodiments captures the shortest paths among these transit points. The transit graph is then indexed and stored in a spatial-temporal database for online analytic processing.
    Type: Application
    Filed: August 9, 2013
    Publication date: June 12, 2014
    Applicant: International Business Machines Corporation
    Inventors: Arun Hampapur, Qing He, Xuan Liu, Songhua Xing
  • Publication number: 20140160485
    Abstract: A probe for a common path optical coherence tomography system includes a sheath having a proximal end and a distal end and defining a lumen therein, a single mode optical fiber disposed within the lumen of the sheath such that a portion of the single mode optical fiber extends beyond the distal end of the sheath. The single mode optical fiber has an end face for transmitting and receiving light. The probe also includes a layer of hardened epoxy encasing the portion of the single mode optical fiber that extends beyond the distal end of the sheath except for the end face. The single mode optical fiber has an optical axis extending along a longitudinal direction of the single mode optical fiber. The hardened epoxy is polished at a non-orthogonal angle relative to the optical axis at the end face.
    Type: Application
    Filed: December 10, 2012
    Publication date: June 12, 2014
    Applicant: The Johns Hopkins University
    Inventors: Jin U. Kang, Xuan Liu
  • Publication number: 20140160484
    Abstract: An axial motion distortion-corrected optical coherence tomography system. The system can include an optical coherence tomography sensor, a light source, a fiber-optic system arranged to provide a reference beam and an observation beam, an optical detection system arranged to receive combined light from the reference beam and the observation beam and to provide detection signals, and a data processing system arranged to receive said detection signals, construct a plurality of A-scans from said detection signals, and construct one or more images from said plurality of A-scans. The data processing system can be configured to correct distortion in the images caused by net axial motion of at least one of said optical coherence tomography sensor or a target of said optical coherence tomography sensor by calculating an estimate of the net axial motion using Doppler shift, and then shifting the A-scans according to the estimate.
    Type: Application
    Filed: December 10, 2012
    Publication date: June 12, 2014
    Applicant: The Johns Hopkins University
    Inventors: Jin U. KANG, Xuan Liu
  • Patent number: 8635249
    Abstract: Federating multiple-level master data management systems may include a first set of master data management nodes having one or more common characteristics. A first group master data management node may be assigned to centrally manage the first set of master data management nodes, the first group master data management node maintaining master data management functionalities at a group level and providing a single logical view of master data to the first set of master data management nodes. Each master data management node in the first set has data access link with the first group master data management node based on implementation style of said each master data management node.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: January 21, 2014
    Assignee: International Business Machines Corporation
    Inventors: Rangachari Anand, Stacy F. Hobson, Juhnyoung Lee, Xuan Liu, Yuan Wang, Jeaha Yang
  • Patent number: 8601029
    Abstract: Managing data stewardship in multi-level MDM systems may include a steward data composer that creates data steward repository for a master data management system to define relationships between data stewards and data objects for which data stewards are responsible and steward data consolidator that creates an integrated data steward repository by combining multiple data steward repositories.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: December 3, 2013
    Assignee: International Business Machines Corporation
    Inventors: Rangachari Anand, Stacy F. Hobson, Juhnyoung Lee, Xuan Liu, Jeaha Yang
  • Publication number: 20130190734
    Abstract: A surgical tool system according to an embodiment of the current invention includes a surgical tool, and an interferometry system optically coupled to the surgical tool. The surgical tool includes a body section, a sensor section at least one of attached to or integral with the body section, and a surgical section at least one of attached to or integral with the sensor section at an opposing end of the sensor section from the body section. The sensor section comprises an interferometric optical sensor defining a reference distance that changes in response to at least one of a force or a torque when applied to the surgical section of the surgical tool.
    Type: Application
    Filed: July 20, 2011
    Publication date: July 25, 2013
    Applicant: The Johns Hopkins University
    Inventors: Russell H. Taylor, Iulian Iordachita, Jin U. Kang, Xuan Liu
  • Publication number: 20130144843
    Abstract: An online data fusion system receives a query, probes a first source for an answer to the query, returns the answer from the first source, refreshes the answer while probing an additional source, and applies fusion techniques on data associated with an answer that is retrieved from the additional source. For each retrieved answer, the online data fusion system computes the probability that the answer is correct and stops retrieving data for the answer after gaining enough confidence that data retrieved from the unprocessed sources are unlikely to change the answer. The online data fusion system returns correct answers and terminates probing additional sources in an expeditious manner without sacrificing the quality of the answers.
    Type: Application
    Filed: December 5, 2011
    Publication date: June 6, 2013
    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Divesh Srivastava, Xin Dong, Xuan Liu
  • Publication number: 20130128267
    Abstract: A method for calibrating a Fourier domain optical coherence tomography system includes receiving spectral data from an optical detector comprising a linear array of detector elements, each detector element having a position labeled n, wherein detected light was wavelength-dispersed across the linear array of detector elements; determining parameters of a preselected functional relationship between wave number, kn, corresponding to detector element n as a function of optical detector element n based on the spectral data; further receiving subsequent spectral data subsequent to the first-mentioned receiving, wherein detected light was wavelength-dispersed across the linear array of detector elements; converting the subsequent spectral data using the preselected functional relationship between wave number kn and optical detector element n to obtain converted spectral data; and performing an inverse Fourier transform of the converted spectral data to obtain a depth profile.
    Type: Application
    Filed: August 2, 2011
    Publication date: May 23, 2013
    Applicant: THE JOHNS HOPKINS UNIVERSITY
    Inventors: Jin Kang, Marcin Arkadiusz Balicki, Xuan Liu
  • Publication number: 20130124420
    Abstract: The invention includes various systems, architectures, frameworks and methodologies that can securely enforce a privacy policy. A method is included for securely guaranteeing a privacy policy between two enterprises, comprising: creating a message at a first enterprise, wherein the message includes a request for data concerning a third party and a privacy policy of the first enterprise; signing and certifying the message that the first enterprise has a tamper-proof system with a privacy rules engine and that the privacy policy of the first entity will be enforced by the privacy rules engine of the first enterprise; sending the message to a second enterprise; and running a privacy rules engine at the second enterprise to compare the privacy policy of the first enterprise with a set of privacy rules for the third party.
    Type: Application
    Filed: May 10, 2012
    Publication date: May 16, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Sastry S. Duri, Marco O. Gruteser, Xuan Liu, Paul A. Moskowitz, Ronald Perez, Edith G. Schonberg, Moninder Singh, Jung-Mu Tang, Charles P. Tresser
  • Patent number: 8380787
    Abstract: Federating master data management systems may include a network-aware adapter configured with a host master data management node. The network-aware adapter may establish one or more links with other master data management systems to allow the system to work together and leverage each other's data.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: February 19, 2013
    Assignee: International Business Machines Corporation
    Inventors: Rangachari Anand, Stacy F. Hobson, Juhnyoung Lee, Xuan Liu, Bin Wang, Yuan Wang, Jing Min Xu, Jeaha Yang
  • Patent number: 8364530
    Abstract: Methods and apparatus are provided for presenting personalized information to consumers in a retail environment. A personalized price is determined for at least one product that is in physical proximity to the customer. The physical proximity may be determined, for example, by evaluating identifiers, such as RFID tags, associated with each customer and product. A personalized message can be also presented to a customer regarding at least one product that is in physical proximity to the customer. The personalized message can provide, for example, dietary or safety information relevant to the customer and at least one product in the proximity of the customer. The personalized information may be determined based on one or more personalized message rules.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: January 29, 2013
    Assignee: Toshiba Global Commerce Solutions Holdings Corporation
    Inventors: Sastry S. Duri, Jeffrey G. Elliott, Jennifer C. Lai, Xuan Liu, Paul A. Moskowitz, Jung-Mu Tang, Todd C. Werden, Danny Chan-Yong Wong
  • Publication number: 20130013640
    Abstract: A system, method and computer program product for mining a rule including spatial information and non-spatial information by using a SAR (Spatial Association Rule) mining tool. The computing system is configured to construct an expanded spatial predicate transaction table for reference spatial objects and a generalized taxonomy for task-relevant spatial objects. The computing system is configured to run the SAR mining tool with the constructed expanded spatial predicate transaction and the generalized taxonomy. The computing system outputs, from the SAR mining tool, a set of generalized spatial association rules for the reference spatial objects. The generalized spatial association rule includes the spatial information and non-spatial information, associated with both the reference spatial objects and the task-relevant spatial objects.
    Type: Application
    Filed: July 8, 2011
    Publication date: January 10, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Wei Shan Dong, Arun Hampapur, Zhong Bo Jiang, Hongfei Li, Xuan Liu, Wei Sun
  • Publication number: 20130005696
    Abstract: The present invention provides a class of bufadienolide derivatives representing by the following formula I or pharmaceutically acceptable salts thereof, the preparing process thereof, pharmaceutical composition comprising the same and the use thereof. The bufadienolide derivatives have inhibitory activities against human-derived tumor cell lines, and thus can be used as a drug for treating malignancies.
    Type: Application
    Filed: February 20, 2012
    Publication date: January 3, 2013
    Applicant: SHANGHAI INSTITUTE OF MATERIA MEDICA, CHINESE ACADEMY OF SCIENCES
    Inventors: Lihong Hu, Dean Guo, Zhiyong Xiao, Xuan Liu, Biao Ma, Min Lei
  • Patent number: 8327451
    Abstract: The invention includes various systems, architectures, frameworks and methodologies that can securely enforce a privacy policy. A method is included for securely guaranteeing a privacy policy between two enterprises, comprising: creating a message at a first enterprise, wherein the message includes a request for data concerning a third party and a privacy policy of the first enterprise; signing and certifying the message that the first enterprise has a tamper-proof system with a privacy rules engine and that the privacy policy of the first entity will be enforced by the privacy rules engine of the first enterprise; sending the message to a second enterprise; and running a privacy rules engine at the second enterprise to compare the privacy policy of the first enterprise with a set of privacy rules for the third party.
    Type: Grant
    Filed: June 10, 2008
    Date of Patent: December 4, 2012
    Assignee: International Business Machines Corporation
    Inventors: Sastry S. Duri, Marco O. Gruteser, Xuan Liu, Paul A. Moskowitz, Ronald Perez, Edith G. Schonberg, Moninder Singh, Jung-Mu Tang, Charles P. Tresser
  • Publication number: 20120303672
    Abstract: Federating multiple-level master data management systems may include a first set of master data management nodes having one or more common characteristics. A first group master data management node may be assigned to centrally manage the first set of master data management nodes, the first group master data management node maintaining master data management functionalities at a group level and providing a single logical view of master data to the first set of master data management nodes. Each master data management node in the first set has data access link with the first group master data management node based on implementation style of said each master data management node.
    Type: Application
    Filed: May 27, 2011
    Publication date: November 29, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Rangachari Anand, Stacy F. Hobson, Juhnyoung Lee, Xuan Liu, Yuan Wang, Jeaha Yang
  • Publication number: 20120303673
    Abstract: Managing data stewardship in multi-level MDM systems may include a steward data composer that creates data steward repository for a master data management system to define relationships between data stewards and data objects for which data stewards are responsible and steward data consolidator that creates an integrated data steward repository by combining multiple data steward repositories.
    Type: Application
    Filed: May 27, 2011
    Publication date: November 29, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Rangachari Anand, Stacy F. Hobson, Juhnyoung Lee, Xuan Liu, Jeaha Yang
  • Publication number: 20120303692
    Abstract: Federating master data management systems may include a network-aware adapter configured with a host master data management node. The network-aware adapter may establish one or more links with other master data management systems to allow the system to work together and leverage each other's data.
    Type: Application
    Filed: May 27, 2011
    Publication date: November 29, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Rangachari Anand, Stacy F. Hobson, Juhnyoung Lee, Xuan Liu, Bin Wang, Yuan Wang, Jing Min Xu, Jeaha Yang
  • Publication number: 20120283516
    Abstract: A dark field endoscopic microscope includes an illumination system, an objective lens unit arranged in an optical path of the illumination system, an optical fiber bundle optically coupled to the objective lens unit, and an observation system arranged in an optical return path from the optical fiber bundle. The illumination system provides oblique off-axial illumination while axial rays are at least attenuated.
    Type: Application
    Filed: May 4, 2012
    Publication date: November 8, 2012
    Applicant: The Johns Hopkins University
    Inventors: Jin U. Kang, Xuan Liu