Patents by Inventor Lei Dai

Lei Dai 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: 9139488
    Abstract: Disclosed is an improved sublimation method for the purification of organic small molecules. The new method features that barriers are applied in the collection region of sublimation tube so that the gas flow path is modified to pass through or bypass the barriers from the heating region to the vacuum pump. The arrangement of the barriers can effectively separate the main product from the impurities. The main product is enriched in a collection region, while the volatile impurities are enriched in an impurity region. This method has been proved to improve the quality of sublimed materials substantially according to the purity measurements and OLED performance tests.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: September 22, 2015
    Assignees: GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD., BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Lei Dai, Lifei Cai
  • Publication number: 20150264554
    Abstract: A method includes selecting a path for routing a data packet from a source node to a destination node in a vehicular ad hoc network, storing the data packet if the selected path is identified as a dead end, and establishing a communication link with a first node. The method also includes forwarding the data packet to the first node if a first distance between the first node and the destination node is less than a second distance between the source node and the destination node. More specific embodiments include sending a query for location information of the destination node, receiving the location information including two or more available paths from the source node to the destination node, and determining the path for routing the data packet is an optimal path of the two or more available paths.
    Type: Application
    Filed: March 20, 2015
    Publication date: September 17, 2015
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Sateesh K. Addepalli, Raghuram S. Sudhaakar, Lillian Lei Dai, Vina Ermagan, Preethi Natarajan, Kevin C. Lee, Pere Monclus, Robert Edward Somers
  • Publication number: 20150251948
    Abstract: The present invention relates to a hydrothermal method for preparing a doped vanadium dioxide powder, the doped powder having a chemical composition of V1-XMXO2, 0<X?0.5, and M is a doping element, which is introduced to control a particle size and a morphology of the doped powder, the doping element M is selected from a group consisting of manganese, iron, cobalt, nickel, copper, zinc, tin, indium, antimony, gallium, germanium, lead and bismuth, the method comprising a step of a precursor treatment of titrating a quadrivalent vanadium aqueous solution with a basic reagent to obtain a precursor suspension, wherein the precursor treatment involves titrating the quadrivalent vanadium aqueous solution until the emergence of the precursor suspension. The preparation methods for the present invention are easy to implement, low in cost, provide high yield, and are suitable for large scale production.
    Type: Application
    Filed: April 27, 2015
    Publication date: September 10, 2015
    Inventors: Yanfeng Gao, Chuanxiang Cao, Lei Dai, Hongjie Luo, Minoru Kanehira
  • Publication number: 20150222708
    Abstract: A method in one example embodiment includes identifying a power state and a battery level of a vehicle. The method also includes allocating power to critical applications (for example) in response to determining that the battery level is above a reserve threshold while the power state of the vehicle is engine-off. The method also includes allocating remaining power in excess of the reserve threshold to non-critical applications according to a power management policy. The power management policy may comprise at least one of a user power preference index and an application power preference index.
    Type: Application
    Filed: February 11, 2015
    Publication date: August 6, 2015
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Sateesh K. Addepalli, Fabio R. Maino, Lillian Lei Dai, Raghuram S. Sudhaakar, Chin-Ju Chen, Erick D. Lee
  • Patent number: 9083581
    Abstract: A method in one embodiment includes maintaining a list of authorized devices; creating an association between a wireless device being operated by an end user and an onboard unit (OBU) element, which is provisioned in a vehicle; establishing a session over a designated port for an application to be executed on the OBU element; and accessing resources associated with the vehicle through the OBU element. In other examples, authentication of the wireless device can occur via a wired equivalent privacy (WEP) WiFi access point provided by the OBU element. Authentication of the wireless device can also occur via a radio-frequency identification (RFID) tag. The resources can include any number of items such as speakers, a display, a microphone, a global positioning system (GPS) receiver, or any other suitable element that may be provisioned in the vehicle.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: July 14, 2015
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Sateesh K. Addepalli, Ashok K. Moghe, Lillian Lei Dai, Mohammand H. Falaki
  • Publication number: 20150144898
    Abstract: The present invention discloses an “organic light-emitting device (OLED)”, comprising an anode, a cathode, and one or more organic layers, wherein the said organic layer contains at least one compound having the formula (I), and the said OLED has the advantages of excellent light-emitting efficiency, excellent color purity and long lifetime.
    Type: Application
    Filed: May 26, 2013
    Publication date: May 28, 2015
    Inventors: Lei Dai, Jinhai Huang, Jinxin Chen, Lifei Cai
  • Patent number: 9036509
    Abstract: A method includes selecting a path for routing a data packet from a source node to a destination node in a vehicular ad hoc network, storing the data packet if the selected path is identified as a dead end, and establishing a communication link with a first node. The method also includes forwarding the data packet to the first node if a first distance between the first node and the destination node is less than a second distance between the source node and the destination node. More specific embodiments include sending a query for location information of the destination node, receiving the location information including two or more available paths from the source node to the destination node, and determining the path for routing the data packet is an optimal path of the two or more available paths.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: May 19, 2015
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Sateesh K. Addepalli, Raghuram S. Sudhaakar, Lillian Lei Dai, Kevin C. Lee
  • Publication number: 20150108449
    Abstract: An organic light-emitting material having the structure of formula (I) or (II) as described below and an organic light-emitting device (OLED) are disclosed. The OLED adopts the compound containing fluoranthene group as the electron transport material possessing good electron transport and injection ability. The material also enhances the luminous efficiency and lifetime of the device because of its excellent thermal stability and film-forming properties. At the same time, the high triplet energy and excellent electron transport capacity of the material containing fluoranthene group make it suitable to be used as the host for phosphorescent devices, increasing the number of electrons in the light-emitting layer and the efficiency of the device.
    Type: Application
    Filed: June 5, 2013
    Publication date: April 23, 2015
    Inventors: Jinhai Huang, Lei Dai, Jinxin Chen, Lifei Cai
  • Publication number: 20150108448
    Abstract: The present invention discloses an “organic light-emitting device (OLED)”, comprising an anode, a cathode, and one or more organic layers, wherein the said organic layer contains at least one compound having the formula (I), and the said OLED has the advantages of excellent light-emitting efficiency, excellent color purity and long lifetime.
    Type: Application
    Filed: May 26, 2013
    Publication date: April 23, 2015
    Applicants: GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD, BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO., LTD
    Inventors: Lei Dai, Jinhai Huang, Jinxin Chen, Lifei Cai
  • Patent number: 8989954
    Abstract: A method in one example embodiment includes identifying a power state and a battery level of a vehicle. The method also includes allocating power to critical applications (for example) in response to determining that the battery level is above a reserve threshold while the power state of the vehicle is engine-off. The method also includes allocating remaining power in excess of the reserve threshold to non-critical applications according to a power management policy. The power management policy may comprise at least one of a user power preference index and an application power preference index.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: March 24, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Sateesh K. Addepalli, Lillian Lei Dai, Raghuram S. Sudhaakar, Chin-Ju Chen
  • Publication number: 20150077394
    Abstract: The present invention relates to a touch technology field, provides a touch detecting method for a touch sensor, the method comprises the following steps: putting the touch sensor into a mutual capacitance mode and a self capacitance mode alternatively, and scanning and detecting the rows and columns of a capacitance array of the touch sensor; when a touch state is preliminarily judged as a multi-touch according to a scanning and detecting result in the mutual capacitance mode, implementing envelopment analysis for data obtained by sampling in the self capacitance mode, determining whether the touch state in the mutual capacitance mode is a single touch or the multi-touch, outputting one touch coordinate if the touch state is the single touch; and outputting a plurality of touch coordinates if the touch state is the multi-touch. The present invention also provides a touch detecting system and a touch terminal for the touch sensor.
    Type: Application
    Filed: November 25, 2014
    Publication date: March 19, 2015
    Inventors: Lei Dai, Zhenyu Zhong, Jinchun Ye, Haolei Wang, Xiaoxiang Chen
  • Publication number: 20150029987
    Abstract: A method in one embodiment includes intercepting a message in an on-board unit (OBU) of a vehicular network environment between a source and a receiver in the vehicular network environment, verifying the message is sent from the source, verifying the message is not altered, evaluating a set of source flow control policies associated with the source, and blocking the message if the set of source flow control policies indicate the message is not permitted. In specific embodiments, the message is not permitted if a level of access assigned to the source in the set of source flow control policies does not match a level of access tagged on the message. In further embodiments, the method includes evaluating a set of receiver flow control policies associated with the receiver, and blocking the message if the set of receiver flow control policies indicates the message is not permitted.
    Type: Application
    Filed: September 12, 2014
    Publication date: January 29, 2015
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Sateesh K. Addepalli, Lillian Lei Dai, Flavio Bonomi, Xiaoqing Zhu, Fabio R. Maino, Pere Monclus, Rong Pan, Preethi Natarajan, Vina Ermagan, Alexander Loukissas
  • Publication number: 20140380442
    Abstract: A method in one embodiment includes authenticating a first agent to an on board unit (OBU) of a vehicle if the first agent validates a first set of one or more authentication requirements and identifying a first identity profile corresponding to the first agent. The method also includes determining a role of the first agent in the vehicle and configuring the vehicle with the first identity profile, where the vehicle is configured based, at least in part, on the role of the first agent. In this embodiment, the first identity profile is one of a plurality of identity profiles provisioned on the OBU. In specific embodiments, each one of a plurality of agents corresponds to a respective one of the plurality of identity profiles, and includes one or more of a human agent, a machine device, a software agent, an authorized entity, and a mobile device.
    Type: Application
    Filed: September 12, 2014
    Publication date: December 25, 2014
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Sateesh K. Addepalli, Fabio R. Maino, Flavio Bonomi, Lillian Lei Dai, Vina Ermagan, Alexander Loukissas, Erick D. Lee, Landon Curt Noll
  • Patent number: 8903593
    Abstract: A method in one example embodiment includes receiving a set of data in real time from a plurality of machine devices associated with at least one vehicle, providing a set of reference data corresponding to a machine device of the plurality of machine devices, comparing the set of data with the set of reference data, and detecting a deviation within the set of data from the set of reference data. The method further includes initiating an operation associated with the deviation. The set of reference data could be a trend of previous data received from the machine device or a common trend based on a previous set of data of the machine device. More specific embodiments include receiving a plurality of data containing the set of data from the plurality of machine devices and identifying a state of the machine device using the set of data.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: December 2, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Sateesh K. Addepalli, Lillian Lei Dai, Ashok K. Moghe, Flavio Bonomi, Rodolfo A. Milito, Vina Ermagan, Fabio R. Maino, Pere Monclus
  • Patent number: 8863256
    Abstract: A method in one embodiment includes detecting an event for a transaction on an on-board unit (OBU) of a vehicle, where the event has a trigger associated with an agent. The method also includes determining whether the transaction is authorized, identifying network credentials in an identity profile that corresponds to the agent, providing network credentials to a transaction application corresponding to the transaction, and accessing a remote network using the network credentials. Certain embodiments include selecting the network credentials from a plurality of available network credentials corresponding to the agent. In more specific embodiments, the network credentials include one or more virtual subscriber identity modules (VSIMs) of a plurality of VSIMs provisioned on the OBU. In specific embodiments, the network credentials are mapped to a combination of two or more of the agent, the transaction application, and a predefined current location of the vehicle.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: October 14, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Sateesh K. Addepalli, Fabio R. Maino, Flavio Bonomi, Lillian Lei Dai, Vina Ermagan, Alexander Loukissas, Erick D. Lee, Landon Curt Noll
  • Publication number: 20140303807
    Abstract: A method includes establishing communication channels between an on-board unit (OBU) of a vehicle and a plurality of nodes, tagging each of a plurality of data from the plurality of nodes with a priority level, storing the plurality of data in a priority queue according to respective priority levels, selecting a medium to present a first data of the plurality of data to a user, and presenting the first data to the user via the medium. In the method, the plurality of nodes includes a remote node and an in-vehicle device. Another method includes receiving a data from a remote node, generating a plurality of data streams from the data and transmitting the plurality of data streams across a plurality of wireless interfaces. Another method includes enhancing audio signals from a plurality of microphones and speakers. Yet another method includes various gesture based user interfaces coupled to the OBU.
    Type: Application
    Filed: April 2, 2014
    Publication date: October 9, 2014
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Sateesh K. Addepalli, Lillian Lei Dai, Raghuram S. Sudhaakar, Flavio Bonomi, Xiaoqing Zhu, Preethi Natarajan, Vijaynarayanan Subramanian, Rong Pan, Robert Edward Somers
  • Patent number: 8848608
    Abstract: A method in one embodiment includes detecting a trigger on an electronic device and identifying an interface usage policy for an agent and a corresponding application on the electronic device. The method also includes selecting a first wireless interface of a plurality of wireless interfaces on the electronic device for a network session between an application process of the application and a remote node, with the first wireless interface being selected based on one or more criteria in the interface usage policy. In specific embodiments the electronic device is an on-board unit of a vehicle. In more specific embodiments a second wireless interface is selected based on the interface usage policy, the first and second wireless interfaces are different physical interfaces on the electronic device. In other specific embodiments, the first and second wireless interfaces are virtual interfaces of a single physical interface on the electronic device.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: September 30, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Sateesh K. Addepalli, Lillian Lei Dai, Xiaoqing Zhu, Rong Pan, Preethi Natarajan
  • Publication number: 20140215491
    Abstract: A system includes an on-board unit (OBU) in communication with an internal subsystem in a vehicle on at least one Ethernet network and a node on a wireless network. A method in one embodiment includes receiving a message on the Ethernet network in the vehicle, encapsulating the message to facilitate translation to Ethernet protocol if the message is not in Ethernet protocol, and transmitting the message in Ethernet protocol to its destination. Certain embodiments include optimizing data transmission over the wireless network using redundancy caches, dictionaries, object contexts databases, speech templates and protocol header templates, and cross layer optimization of data flow from a receiver to a sender over a TCP connection. Certain embodiments also include dynamically identifying and selecting an operating frequency with least interference for data transmission over the wireless network.
    Type: Application
    Filed: April 1, 2014
    Publication date: July 31, 2014
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Sateesh K. Addepalli, Ashok K. Moghe, Flavio Bonomi, Marc Jean-Philippe Girardot, Vijaynarayanan Subramanian, Lillian Lei Dai, Rong Pan, Preethi Natarajan, Xiaoqing Zhu, Pascal Thubert, Chiu Ngok Eric Wong
  • Publication number: 20140204320
    Abstract: The present invention provides a color filter substrate and a liquid crystal panel. The color filter substrate according to an embodiment of the present invention comprises a base substrate, a color filter layer and an optical layer which is provided on the color filter layer and comprises an ultraviolet absorption material. The ultraviolet absorption material in the color filter substrate or the liquid crystal panel according to the present invention can absorb ultraviolet and prevent the color resin in the color filter layer from being damaged by ultraviolet transmitting through the optical layer.
    Type: Application
    Filed: December 31, 2013
    Publication date: July 24, 2014
    Applicants: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: FALU YANG, Lei Dai, Jun Hwan Lim, Junrui Zhang
  • Publication number: 20140191422
    Abstract: Disclosed is an improved sublimation method for the purification of organic small molecules. The new method features that barriers are applied in the collection region of sublimation tube so that the gas flow path is modified to pass through or bypass the barriers from the heating region to the vacuum pump. The arrangement of the barriers can effectively separate the main product from the impurities. The main product is enriched in a collection region, while the volatile impurities are enriched in an impurity region. This method has been proved to improve the quality of sublimed materials substantially according to the purity measurements and OLED performance tests.
    Type: Application
    Filed: August 3, 2012
    Publication date: July 10, 2014
    Applicants: BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO., LTD., GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD.
    Inventors: Lei Dai, Lifei Cai