Patents by Inventor Xia Gao

Xia Gao 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: 9236547
    Abstract: Provided is a light emitting semiconductor device comprising a flexible dielectric layer, a conductive layer on at least one side of the dielectric layer, at least one cavity or via in the dielectric substrate, and a light emitting semiconductor supported by the cavity or via. Also provided is a support article comprising a flexible dielectric layer, a conductive layer on at least one side and at least one cavity or via in the dielectric substrate. Further provided is a flexible light emitting semiconductor device system comprising the above-described light emitting semiconductor device attached to the above-described support article.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: January 12, 2016
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Ravi Palaniswamy, Alejandro Aldrin Il Agcaoili Narag, Jian Xia Gao, Justine A. Mooney
  • Publication number: 20140153263
    Abstract: Provided is a light emitting semiconductor device comprising a flexible dielectric layer, a conductive layer on at least one side of the dielectric layer, at least one cavity or via in the dielectric substrate, and a light emitting semiconductor supported by the cavity or via. Also provided is a support article comprising a flexible dielectric layer, a conductive layer on at least one side and at least one cavity or via in the dielectric substrate. Further provided is a flexible light emitting semiconductor device system comprising the above-described light emitting semiconductor device attached to the above-described support article.
    Type: Application
    Filed: August 8, 2012
    Publication date: June 5, 2014
    Applicant: 3M Innovative Properties Company
    Inventors: Ravi Palaniswamy, Alejandro Aldrin II Agcaoili Narag, Jian Xia Gao, Justine A. Mooney
  • Publication number: 20140036461
    Abstract: Provided is a flexible light emitting semiconductor device (26), such as an LED device, that includes a flexible dielectric layer (12) having first and second major surfaces and at least one via (10) extending through the dielectric layer from the first to the second major surface, with a conductive layer (19, 20, 18) on each of the first and second major surfaces and in the via. The conductive layer (18) in the via supports a light emitting semiconductor device (26) and is electrically isolated from the conductive layer (19) on the first major surface of the dielectric layer.
    Type: Application
    Filed: October 27, 2011
    Publication date: February 6, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Ravi Palaniswamy, Arokiaraj Jesudoss, Alejandro Aldrin II Agcaoili Narag, James R White, Fong Liang Tan, Andrew J Ouderkirk, Justine A Mooney, Nathan P Kreutter, Qihong Nie, Jian Xia Gao
  • Publication number: 20130294471
    Abstract: Provided is a flexible light emitting semiconductor device, such as an LED device, that includes a flexible dielectric layer having first and second major surfaces with a conductive layer on the first major surface and at least one cavity in the first major surface with a conductive layer in the cavity that supports a light emitting semiconductor device. The conductive layer in the cavity is electrically isolated from the second major surface of the dielectric layer.
    Type: Application
    Filed: October 27, 2011
    Publication date: November 7, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Ravi Palaniswamy, Arokiaraj Jesudoss, Alejandro Aldrin II Agcaoili Narag, James R. White, Fong Liang Tan, Andrew J. Ouderkirk, Justine A. Mooney, Nathan P. Kreutter, Qihong Nie, Jian Xia Gao
  • Patent number: 7995462
    Abstract: A method supports scalable and reliable multicast in a wireless network with a large bandwidth-delay product. In this method, acknowledgement packets from different receivers experiencing the same number of data packets lost are assigned the same time slots. This method can be combined with other loss recovery techniques, such as forward error correction (FEC) recovery, proactive protection, feedback suppression and collision detection. Scalability is achieved as bandwidth usage relates only to the number of packets transmitted, rather than the number of receivers.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: August 9, 2011
    Assignee: NTT DoCoMo, Inc.
    Inventors: Xia Gao, Fujio Watanabe, Gang Wu, Ravi Kumar Jain, Toshiro Kawahara
  • Patent number: 7656831
    Abstract: Methods for increasing power saving in a station that sends or receives frames in an ad hoc wireless network (e.g., IBSS), while allowing the station to enter a power-saving mode quickly upon completion of scheduled tasks. At the same time, a method of the present invention allows two stations in the ad hoc wireless network to infer each other's power management mode without requiring an ATIM/ACK exchange between the STAs within an ATIM window. Consequently, a station may enter a power-saving mode promptly without impairing the station's ability to receive packets. In one embodiment, a “more data” field is used between stations to exchange information. Stations with various computation abilities provide information under different time constraints. The stations may enter power-saving modes that send multicast/broadcast frames or use promiscuous mode within an ATIM window.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: February 2, 2010
    Assignee: NTT DoCoMo, Inc.
    Inventors: Xia Gao, Fujio Watanabe, Moo Ryong Jeong
  • Patent number: 7613457
    Abstract: A method, system, and business model are disclosed for supporting handover between a mobile host and a corresponding node located in a heterogeneous network. Handover paths are established to accommodate a plurality of quality of service properties. Admission control is performed that considers the established handover paths and an established first reservation path. Gateways are contacted to determine a handover path to use. The determined handover path is used to support vertical handover. A second reservation path is established while maintaining the first reservation path and the handover path.
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: November 3, 2009
    Assignee: NTT DoCoMo, Inc.
    Inventors: Xia Gao, Gang Wu
  • Patent number: 7602757
    Abstract: Channel scanning for wireless networks, such as Wireless Local Area Networks (WLANs), generally provides a wireless station with the information on the available WLAN resources, such as the frequency band and the maximum transmission power. The present invention provides safe and fast domain-aware channel scanning, enabling a wireless station to comply with applicable local regulations, in spite of the possibility of domain changes, with short channel-scanning time. Fast channel scanning is accomplished by active channel scanning if valid domain information is available and there is no possibility of domain change. Also, domain-independent channels, if any, are first scanned using active scan to get domain information faster.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: October 13, 2009
    Assignee: NTT DOCOMO, Inc.
    Inventors: Moo Ryong Jeong, Xia Gao, Fujio Watanabe, Gang Wu
  • Publication number: 20080283278
    Abstract: The present invention is directed to a substrate for subsequent eutectic bonding with a subsequently applied metal to provide, or as a precursor to the provision of, a circuit substrate. The circuit substrate comprises a dielectric film and a layer of an oxide or oxides of a metal on the film. The metal oxide layer has been formed by sputtering the metal of the metal oxide or oxides onto a surface of the film in the presence of an inert atmosphere save for at least one reactive gas content to provide the oxygen of the oxides.
    Type: Application
    Filed: April 4, 2006
    Publication date: November 20, 2008
    Inventors: Li Ping Wang, Xiao Dong Wang, Jian Xia Gao
  • Patent number: 7447148
    Abstract: A method supports scalable and reliable multicast in a wireless network with a large bandwidth-delay product. In this method, acknowledgement packets from different receivers experiencing the same number of data packets lost are assigned the same time slots. This method can be combined with other loss recovery techniques, such as forward error correction (FEC) recovery, proactive protection, feedback suppression and collision detection. Scalability is achieved as bandwidth usage relates only to the number of packets transmitted, rather than the number of receivers.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: November 4, 2008
    Assignee: NTT DoCoMo, Inc.
    Inventors: Xia Gao, Fujio Watanabe, Gang Wu, Ravi Kumar Jain, Toshiro Kawahara
  • Patent number: 7397805
    Abstract: Disclosed herein are systems and methods for communicating a number of data flows on a single communications channel. In one embodiment, a method of communicating a number of data flows on a shared communications channel includes the acts of (1) calculating a set of optimum goodput rates for the data flows, in order to maximize a total utility of the data flows, (2) calculating a set of optimum throughput rates for the data flows based on the optimum goodput rates, and (3) transmitting the data flows on the shared communications channel with the optimized throughput rates. Optimization is preferably done using utility functions that indicate the utility of the data flows as a function of their goodput rates. The method can additionally block temporarily a transport layer of at least one of the data flows if the transport layer of that data flow is bottlenecked.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: July 8, 2008
    Assignee: NTT DoCoMo Inc.
    Inventors: Xia Gao, Moo Ryong Jeong, Fujio Watanabe, Gang Wu
  • Publication number: 20080031179
    Abstract: A method supports scalable and reliable multicast in a wireless network with a large bandwidth-delay product. In this method, acknowledgement packets from different receivers experiencing the same number of data packets lost are assigned the same time slots. This method can be combined with other loss recovery techniques, such as forward error correction (FEC) recovery, proactive protection, feedback suppression and collision detection. Scalability is achieved as bandwidth usage relates only to the number of packets transmitted, rather than the number of receivers.
    Type: Application
    Filed: October 12, 2007
    Publication date: February 7, 2008
    Inventors: Xia Gao, Fujio Watanabe, Gang Wu, Ravi Jain, Toshiro Kawahara
  • Patent number: 7321587
    Abstract: A method for maintaining a quality of service in a wireless communication network is introduced. A reservation is created in a first data path between a home agent and a first foreign agent for data flow between the home agent and a wireless terminal. When the wireless terminal associates with a second foreign agent, a quality of service supportive second data path may be created between the first foreign agent and the second foreign agent. The data flow may be routed over the first and second data paths to maintain the quality of service for the data flow. A wireless communication network may include first downstream and reverse tunnels coupling a home agent and a first foreign agent, each tunnel having a reservation to maintain a quality of service. Second downstream and reverse tunnels may couple a home agent and a second foreign agent.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: January 22, 2008
    Assignee: NTT Docomo, Inc.
    Inventors: Xia Gao, Moo R. Jeong, Fujio Watanabe, Gang Wu
  • Publication number: 20070133448
    Abstract: A method for power saving in an ad hoc wireless computer network determines an optimal ATIM message exchange window. The method (a) determines an effective number of nodes that participate in exchanges of ATIM messages during an ATIM window; (b) using the effective number of nodes, calculating a length for a data frame transmission window; and (c) calculates a length for the ATIM window using the calculated data frame transmission window. In one instance, the method determines the effective number of nodes based on the number of senders of ATIM messages. In another instance, the effective number of nodes is determined based on both senders and recipients of the ATIM messages. The method may determine the effective number of nodes from a number of successful ATIM message transmissions in a given time period. The calculated ATIM window size can be provided as an initial value to other methods that dynamically adjust the ATIM window size.
    Type: Application
    Filed: November 28, 2006
    Publication date: June 14, 2007
    Inventors: Xia Gao, Moo Jeong, Fujio Watanabe
  • Publication number: 20060285528
    Abstract: Methods are disclosed to support power saving states of a beacon station in an ad hoc wireless local area network (WLAN). Some of the methods allow exchanging power management information among stations in the wireless network and to allow beacon station handovers. In some methods, always-on stations are given a higher priority to become a beacon station or a beacon station handover destination. The methods achieve good power saving while minimizing beacon handover frequency.
    Type: Application
    Filed: June 16, 2006
    Publication date: December 21, 2006
    Inventors: Xia Gao, Fujio Watanabe, Moo Jeong
  • Publication number: 20060285527
    Abstract: Methods for increasing power saving in a station that sends or receives frames in an ad hoc wireless network (e.g., IBSS), while allowing the station to enter a power-saving mode quickly upon completion of scheduled tasks. At the same time, a method of the present invention allows two stations in the ad hoc wireless network to infer each other's power management mode without requiring an ATIM/ACK exchange between the STAs within an ATIM window. Consequently, a station may enter a power-saving mode promptly without impairing the station's ability to receive packets. In one embodiment, a “more data” field is used between stations to exchange information. Stations with various computation abilities provide information under different time constraints. The stations may enter power-saving modes that send multicast/broadcast frames or use promiscuous mode within an ATIM window.
    Type: Application
    Filed: June 16, 2006
    Publication date: December 21, 2006
    Inventors: Xia Gao, Fujio Watanabe, Moo Jeong
  • Publication number: 20060199588
    Abstract: A method, system, and business model are disclosed for supporting handover between a mobile host and a corresponding node located in a heterogeneous network. Handover paths are established to accommodate a plurality of quality of service properties. Admission control is performed that considers the established handover paths and an established first reservation path. Gateways are contacted to determine a handover path to use. The determined handover path is used to support vertical handover. A second reservation path is established while maintaining the first reservation path and the handover path.
    Type: Application
    Filed: May 5, 2006
    Publication date: September 7, 2006
    Inventors: Xia Gao, Gang Wu
  • Publication number: 20060198325
    Abstract: A method supports scalable and reliable multicast in a wireless network with a large bandwidth-delay product. In this method, acknowledgement packets from different receivers experiencing the same number of data packets lost are assigned the same time slots. This method can be combined with other loss recovery techniques, such as forward error correction (FEC) recovery, proactive protection, feedback suppression and collision detection. Scalability is achieved as bandwidth usage relates only to the number of packets transmitted, rather than the number of receivers.
    Type: Application
    Filed: October 14, 2004
    Publication date: September 7, 2006
    Inventors: Xia Gao, Fujio Watanabe, Gang Wu, Ravi Jain, Toshiro Kawahara
  • Patent number: 7096022
    Abstract: A method, system, and business model are disclosed for supporting handover between a mobile host and a corresponding node located in a heterogeneous network. Handover paths are established to accommodate a plurality of quality of service properties. Admission control is performed that considers the established handover paths and an established first reservation path. Gateways are contacted to determine a handover path to use. The determined handover path is used to support vertical handover. A second reservation path is established while maintaining the first reservation path and the handover path.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: August 22, 2006
    Assignee: NTT Docomo, Inc.
    Inventors: Xia Gao, Gang Wu
  • Publication number: 20060023686
    Abstract: Channel scanning for wireless networks, such as Wireless Local Area Networks (WLANs), generally provides a wireless station with the information on the available WLAN resources, such as the frequency band and the maximum transmission power. The present invention provides safe and fast domain-aware channel scanning, enabling a wireless station to comply with applicable local regulations, in spite of the possibility of domain changes, with short channel-scanning time. Fast channel scanning is accomplished by active channel scanning if valid domain information is available and there is no possibility of domain change. Also, domain-independent channels, if any, are first scanned using active scan to get domain information faster.
    Type: Application
    Filed: September 6, 2005
    Publication date: February 2, 2006
    Inventors: Moo Jeong, Xia Gao, Fujio Watanabe, Gang Wu