Patents by Inventor Xiaoyu Liu

Xiaoyu 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).

  • Patent number: 8619729
    Abstract: The present invention relates to a wireless network, and more particularly, a method (*“and system”?*) which a mobile station discovers a neighbor network in an Internet protocol based wireless network, a network management server for enabling the method, and a method of operating the network management server.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: December 31, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yegin Alper, Youn-Hee Han, JinHyeock Choi, Hee-Jin Jang, Xiaoyu Liu
  • Patent number: 8582528
    Abstract: A method and apparatus for managing a Media Independent Handover (MIH) service is provided. The MIH service management method includes setting state information of a Media Independent Handover Function (MIHF), and managing MIH services based on the set state information of the MIHF.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: November 12, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Xiaoyu Liu, Su Won Lee, Jeong Jae Won, Eui Seok Hwang
  • Patent number: 8554220
    Abstract: A mobile terminal and a network device for providing a handover service are provided. A mobile terminal includes a transmission unit to transmit a request message for handover information to a network device, and a receiving unit to receive a response message including the handover information from the network device, wherein the request message and the response message are transceived by an application layer protocol.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: October 8, 2013
    Assignees: Samsung Electronics Co., Ltd., Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung e.V.
    Inventors: Xiaoyu Liu, Su Won Lee, Marius-lulian Corici, Alin Florindor Murarasu, Stefan Arbanowski
  • Publication number: 20130225810
    Abstract: Provided are a benzamide derivative as shown in formula (I) or a pharmaceutically acceptable salt thereof, and the preparation method and use thereof for preparing a medicine for treating cancer, wherein the group definitions of formula (I) are as set out in the description.
    Type: Application
    Filed: November 3, 2011
    Publication date: August 29, 2013
    Applicant: Zhejiang Hisun Pharmaceutical Co., Ltd.
    Inventors: Hua Bai, Xuyang Zhao, Yongxiang Gong, Jinqing Zhong, Qifeng Zhu, Xiaoyu Liu, Lifei Liu, Qixian Zhou
  • Publication number: 20130181048
    Abstract: A system for storing information relating to a medical implant device implanted in a patient includes a credit card sized card device structured to be carried by the patient external to the patient's body. The card device includes a wireless transponder device securely storing information relating to at least one of the medical implant and the patient. The system also includes a reader device structured to selectively and securely read the information from the wireless transponder device. In one implementation, the reader device is able to selectively and securely read the information from the wireless transponder device using a direct electrical connection (e.g., using transcutaneous contact) without an air interface.
    Type: Application
    Filed: July 18, 2012
    Publication date: July 18, 2013
    Applicant: University of Pittsburgh-of the Commonwealth System of Higher Education
    Inventors: Xiaoyu Liu, Ajay Ogirala, Marlin Homer Mickle, J. Lee Berger
  • Patent number: 8441992
    Abstract: A broadband wireless communication system is provided. An apparatus for an information server (IS) comprises an event module for determining whether updating the network information of at least one access network (AN) is needed, a generator module for generating at least one Information_Get_Request packet for requesting the network information of the at least one AN when the updating is needed, a communication module for transmitting at least one Information_Get_Request packet to the at least one AN, and a database (DB) module for storing network information within an Information_Get_Response packet received from the at least one AN.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: May 14, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Eui-Seok Hwang, Jeong-Jae Won, Young-Seok Kim, Su-Won Lee, Xiaoyu Liu
  • Patent number: 8421274
    Abstract: A wireless energy transfer system includes a first energy transfer unit having at least one resonant frequency, a second energy transfer unit having the at least one resonant frequency, and a load. The first wireless energy transfer unit includes a first coil magnetically coupled to a first wireless energy transfer cell, and the second wireless energy transfer unit includes a second coil magnetically coupled to a second wireless energy transfer cell. The first coil receives first energy and through the magnetic coupling between the first coil and the first wireless energy transfer cell, the first wireless energy transfer cell is caused to generate second energy, wherein the second wireless energy transfer cell receives the second energy and through the magnetic coupling between the second wireless energy transfer cell and the second coil, the second coil is caused to provide third electromagnetic wave energy to the load.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: April 16, 2013
    Assignee: University of Pittsburgh-Of the Commonwealth System of Higher Education
    Inventors: Mingui Sun, Steven Hackworth, Robert Sclabassi, Fei Zhang, Xiaoyu Liu
  • Patent number: 8422458
    Abstract: A handoff apparatus and method in FMIPv6 for seamless TCP packet transmissions. The handoff method includes steps of intercepting by a previous access router certain TCP packets sent from a correspondent node to a previous temporary address of a mobile node; and creating a TCP ACK by the previous access router in response to the certain TCP packets and sending by the previous access router the created TCP ACK to the correspondent node every time the certain TCP packets are forwarded to a new access router through a bi-directional tunnel. The handoff method has an advantage in that the packet transmission rate can be secured at the same level as the mobile node stays still during the performance of the handoff of the mobile node since the previous access router instead of the mobile node creates and sends the TCP ACK to the correspondent node during the performance of the handoff of the mobile node.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: April 16, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee-jin Jang, Xiaoyu Liu, Youn-hee Han
  • Publication number: 20130089613
    Abstract: Phenyl propanoic acid compounds having activating effect on peroxisome proliferator-activated receptors (PPAR?,?,?) and a preparation method and uses thereof are provided in the present invention. The compounds can be used for treating or preventing diseases associated with peroxisome proliferator-activated receptors (PPAR?,?,?).
    Type: Application
    Filed: June 18, 2011
    Publication date: April 11, 2013
    Applicant: ZHEJIANG HISUN PHARMACEUTICAL CO., LTD.
    Inventors: Yaping Wang, Guojun Zheng, Peng Sun, Yi Li, Yingqiu Wu, Bin Liu, Xiaoyu Liu, Hua Bai, Hongyan Li, Xiaohe Zheng
  • Patent number: 8400988
    Abstract: A radio communication system and transmission method using Multi-Radio Access (MRA) interfaces are provided. The radio communication system and method include a transmitter and a receiver having at least two Radio Access (RA) interfaces capable of communicating through different frequency spectrums, in which each of the transmitter and the receiver includes a multiple radio transmission layer for activating a multiple radio transmission entity for each upper layer service and transmitting data in packet units and an RA layer for activating at least one RA entity that manages the RA interface for the multiple radio transmission entity and dividing a packet into sub-packets for transmission and reception. In the transmission method, the multiple radio transmission entity of the transmitter receives a packet transmission success indicator for a specific packet from the RA entity of the transmitter and a next packet is transmitted upon receipt of the packet transmission success indicator.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: March 19, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Xiaoyu Liu, Mi-Sun Do, Yongsuk Park
  • Publication number: 20120208994
    Abstract: Preparation of azetidinone compounds and medical use thereof are provided by the present invention. More particularly, azetidionne compounds, shown as formula (I), wherein R1, R2, R3, R4, R5 and R6 are defined in description, and preparation methods thereof are provided by the present invention. The compounds of the present invention can reduce the levels of total cholesterol (TC) and low density lipoprotein cholesterol (LDL-C) in plasma, and can be used as medicaments for reducing cholesterol in blood. Therefore the compounds of the present invention can be used to treat or prevent diseases of atherosclerosis, cacergasia of blood vessel, cardiac failure, coronary artery disease, angiocardiopathy, myocardial, angina, hyperlipoidemia and hypercholesteremia and the like. Preparation method of compounds of formula (I) and intermediate compounds are also provided by the present invention.
    Type: Application
    Filed: August 9, 2010
    Publication date: August 16, 2012
    Applicant: ZHEJIANG HISUN PHARMACEUTICAL CO., LTD.
    Inventors: Hua Bai, Xuyang Zhao, Xiaojie Xu, Xiaoyu Liu, Yuncai Zhang, Ying Chen, Xiaohe Zheng, Maojian Gu, Qifeng Zhu, Yong Zhang, Hairong Luo
  • Publication number: 20110319458
    Abstract: The present invention provides a novel compound of formula I, which has an agitation effect on the peroxisome proliferator-activated receptor subtype ? (PPAR?), to a pharmaceutical composition comprising the compound, to a process for preparation of the compound and to use of the compound in the manufacture of a medicament for treating or preventing a disease which could be treated or prevented by activating PPAR? thereof, said disease is one or more from the group comprising metabolic syndrome, obesity, dyslipidemia, pathoglycemia, insulin resistance, senile dementia and tumors. The present invention also relates to a new intermediate used in the preparation of the novel compound and a process for preparation of the intermediate.
    Type: Application
    Filed: August 7, 2009
    Publication date: December 29, 2011
    Applicant: Zhejiang Hisun Pharmaceutical Co., Ltd.
    Inventors: Chunhua Jin, Xiaoyu Liu, Zhenliang Chen, Xiaohe Zheng, Shoufeng Ming
  • Patent number: 8050231
    Abstract: Vertical handover apparatus and method in a wireless communication system are provided. The method includes examining whether there exists an accessible target network while communicating with a serving network; when there exists the accessible target network, linking up to the target network; changing a communication state to an idle mode by de-registering the linked target network; and performing a network re-entry to the target network in a vertical handover to the target network. When the terminal can execute the vertical handover without the seamless service support and reduce the handover delay.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: November 1, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Eui-Seok Hwang, Jeong-Jae Won, Su-Won Lee, Xiaoyu Liu, Young-Seok Kim, Jong-Ho Bang, Jae-Young Kim
  • Publication number: 20110218221
    Abstract: The present invention relates to compounds represented by formula (I) or composition comprising at least one of such compounds, which are inhibitors of histone deacetylase. The detailed description of these compounds is disclosed in the Description. These compounds and the composition comprising the same may be useful as medicaments for the treatment of proliferative disorders as well as other diseases involving, relating to or associated with enzymes having histone deacetylase (HDAC) activities.
    Type: Application
    Filed: October 27, 2008
    Publication date: September 8, 2011
    Applicants: Zhejiang Hisun Pharmaceutical Co., Ltd., Central South University
    Inventors: Niefang Yu, Xiaoyu Liu, Xiaodong Hu
  • Patent number: 7953045
    Abstract: A control method for a mobile terminal which connects to a router linked to an external network through at least one interface, including receiving a router advertisement message from the router through a first interface, determining whether prefix information of the received router advertisement message is identical with prefix information of a preset internet protocol (IP) configuration reuse group including the first interface, and generating an IP configuration of the first interface when the two prefix information are identical. Accordingly, at the time of a vertical handover, continuity of the A/V session can be maintained without having to use mobile IP technology.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: May 31, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Youn-hee Han, Jung-ho Kim, Xiaoyu Liu, Jung-hoon Cheon, Hee-jin Jang
  • Patent number: 7948947
    Abstract: A handoff apparatus and method in FMIPv6 for seamless TCP packet transmissions. The handoff method includes steps of intercepting by a previous access router certain TCP packets sent from a correspondent node to a previous temporary address of a mobile node; and creating a TCP ACK by the previous access router in response to the certain TCP packets and sending by the previous access router the created TCP ACK to the correspondent node every time the certain TCP packets are forwarded to a new access router through a bi-directional tunnel. The handoff method has an advantage in that the packet transmission rate can be secured at the same level as the mobile node stays still during the performance of the handoff of the mobile node since the previous access router instead of the mobile node creates and sends the TCP ACK to the correspondent node during the performance of the handoff of the mobile node.
    Type: Grant
    Filed: January 4, 2006
    Date of Patent: May 24, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee-jin Jang, Xiaoyu Liu, Youn-hee Han
  • Publication number: 20110101788
    Abstract: A wireless energy transfer system includes a first energy transfer unit having at least one resonant frequency, a second energy transfer unit having the at least one resonant frequency, and a load. The first wireless energy transfer unit includes a first coil magnetically coupled to a first wireless energy transfer cell, and the second wireless energy transfer unit includes a second coil magnetically coupled to a second wireless energy transfer cell. The first coil receives first energy and through the magnetic coupling between the first coil and the first wireless energy transfer cell, the first wireless energy transfer cell is caused to generate second energy, wherein the second wireless energy transfer cell receives the second energy and through the magnetic coupling between the second wireless energy transfer cell and the second coil, the second coil is caused to provide third electromagnetic wave energy to the load.
    Type: Application
    Filed: September 10, 2009
    Publication date: May 5, 2011
    Applicant: University of Pittsburgh - Of the Commonwealth System of Higher Education
    Inventors: Mingui Sun, Steven Hackworth, Robert Sclabassi, Fei Zhang, Xiaoyu Liu
  • Publication number: 20110064055
    Abstract: A handoff apparatus and method in FMIPv6 for seamless TCP packet transmissions. The handoff method includes steps of intercepting by a previous access router certain TCP packets sent from a correspondent node to a previous temporary address of a mobile node; and creating a TCP ACK by the previous access router in response to the certain TCP packets and sending by the previous access router the created TCP ACK to the correspondent node every time the certain TCP packets are forwarded to a new access router through a bi-directional tunnel. The handoff method has an advantage in that the packet transmission rate can be secured at the same level as the mobile node stays still during the performance of the handoff of the mobile node since the previous access router instead of the mobile node creates and sends the TCP ACK to the correspondent node during the performance of the handoff of the mobile node.
    Type: Application
    Filed: November 18, 2010
    Publication date: March 17, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hee-jin JANG, Xiaoyu Liu, Youn-hee Han
  • Patent number: 7742766
    Abstract: A network discovery method in a heterogeneous network environment. The network discovery method includes receiving neighbor information indicating neighbor PoAs from a MIIS entity at a mobile node that includes a plurality of communication interface sections capable of communicating with different networks; checking at least one neighbor PoA using the neighbor information at the mobile node; and activating a communication interface section corresponding to the checked neighbor PoA at the mobile node. Accordingly, the neighbor networks can be discovered under the heterogeneous network environment and unnecessary power consumption can be avoided.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: June 22, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Xiaoyu Liu, Hee-jin Jang, Youn-hee Han
  • Publication number: 20090270102
    Abstract: A mobile terminal and a network device for providing a handover service are provided. A mobile terminal includes a transmission unit to transmit a request message for handover information to a network device, and a receiving unit to receive a response message including the handover information from the network device, wherein the request message and the response message are transceived by an application layer protocol.
    Type: Application
    Filed: August 12, 2008
    Publication date: October 29, 2009
    Inventors: Xiaoyu LIU, Su Won LEE, Marius-lulian CORICI, Alin Florindor MURARASU, Stefan ARBANOWSKI