Patents by Inventor Qing Zhao

Qing Zhao 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: 9986521
    Abstract: Systems and methods are provided for detecting a received synchronization signal. The method includes receiving, at a receiver, a signal from a transmitter and the signal includes the received synchronization signal. The method includes processing the received signal and a plurality of candidate synchronization signals to obtain a plurality of correlation signals. Each candidate synchronization signal is associated with one of the plurality of correlation signals. The method includes selecting, based at least in part on the plurality of correlation signals, one of the plurality of candidate synchronization signals. The selected candidate synchronization signal is correlated with the received synchronization signal. The method includes detecting the received synchronization signal based at least in part on (i) the received signal, and (ii) a characteristic obtained from the correlation signal that is associated with the selected candidate synchronization signal.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: May 29, 2018
    Assignee: Marvell International Ltd.
    Inventors: Chusong Xiao, Qing Zhao, Manyuan Shen, Leilei Song, Hui-Ling Lou
  • Patent number: 9955021
    Abstract: Processing of VoIP calls routed by an IPBX server are disclosed. At least one processing circuit is communicatively coupled to an Internet-Protocol Private Branch Exchange (IPBX) server that is configured and arranged to route Voice over Internet Protocol (VoIP) calls for a plurality of agents in a call center. The processing circuit is configured to receive call event messages from the IPBX server for calls routed by the IPBX server, generate, during a call to a first agent of the plurality of agents, a set of data metrics including call summary metrics based on the call event messages; and redirect, during the call to the first agent, the call to a second agent of the plurality of agents in response to the set of data metrics satisfying a set of criteria indicated in a policy.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: April 24, 2018
    Assignee: 8x8, Inc.
    Inventors: Zhishen Liu, Qing Zhao, Bryan R. Martin
  • Publication number: 20180103486
    Abstract: An example method is provided in one example embodiment and includes receiving performance metric information from a plurality of small cell radios, wherein the performance metric information includes, at least in part, a number of user equipment that are to be scheduled on a first type and a second type of subframes for each small cell radio; determining resource allocation parameters for the plurality of small cell radios; exchanging interference information between two or more small cell radios of the plurality of small cell radios that includes an indication of whether a particular small cell radio is interfering with or is interfered by another small cell radio of the two or more small cell radios; and scheduling downlink resource transmissions on the first type and the second type of subframes for user equipment served by the two or more small cell radios.
    Type: Application
    Filed: November 10, 2017
    Publication date: April 12, 2018
    Inventors: Ritesh K. MADAN, Vikram CHANDRASEKHAR, Rohit Umesh NABAR, Kedar Durgadas SHIRALI, Qing ZHAO
  • Patent number: 9936079
    Abstract: Apparatus and methods are disclosed for display dependent analysis of call data in an IBPX. In an example embodiment, an apparatus communicatively coupled to an IPBX server is configured to route VoIP calls in the IPBX. An interface circuit is configured to selected parameters of interest based on capabilities of a set of devices and generate subscription requests to subscribe the devices to the parameters of interest. A first processing circuit is configured to generate call summary metrics from call event messages for calls routed by the IPBX server. A second processing circuit subscribes a device identified in the subscription request to the selected set of parameters of interest identified in the subscription request. The second processing circuit evaluates call summary metrics for each parameter of interest subscribed to by the devices and provides results of the evaluation to devices that are subscribed to the parameter of interest.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: April 3, 2018
    Assignee: 8×8, Inc.
    Inventors: Zhishen Liu, Qing Zhao
  • Publication number: 20180082980
    Abstract: A package module includes a power module, a first thermal dissipating component and a packaging plastic. The power module includes a substrate and at least one power semiconductor component disposed on the substrate. The first thermal dissipating component is disposed over the power module. The packaging plastic covers the power module and the first thermal dissipating component, wherein a portion of the first thermal dissipating component is exposed from the packaging plastic.
    Type: Application
    Filed: November 30, 2017
    Publication date: March 22, 2018
    Inventors: Le LIANG, Shou-Yu HONG, Zhen-Qing ZHAO
  • Publication number: 20180057512
    Abstract: A method of preparing a crystalline zwitterionic zinc(II)-carboxylate compound includes the steps of preparing a mixture of zinc(II) ions and a first pyridyl ligand having three carboxylic acid moieties; subjecting the mixture to conditions under which a precipitate is formed; separating the precipitate; adding a solvent and optionally a second pyridyl ligand to the separated precipitate; subjecting the obtained mixture to conditions under which crystals of the zwitterionic zinc(II)-carboxylate compound are formed; and separating the crystals of the zwitterionic zinc(II)-carboxylate compound. Preferably but not exclusively, the crystalline zwitterionic zinc(II)-carboxylate compound essentially consists of at least one 1D coordination polymer.
    Type: Application
    Filed: August 30, 2016
    Publication date: March 1, 2018
    Inventors: Jin-Xiang Chen, Bin Sun, Hai-Qing Zhao, Bao-Ping Xie, Li-Ping Bai, Zhi-Hong Jiang
  • Publication number: 20180062412
    Abstract: Embodiments of the present disclosure provide a screen and a device comprising the screen. The screen comprises: an induction current generation circuit configured to generate an induction current; an induction current transmission circuit connected to the induction current generation circuit and configured to transmit the induction current; and a control circuit connected to the induction current transmission circuit and configured to control the transmission of the induction current. The device comprises the screen described above, and the device further comprises a charging circuit connected to the induction current transmission circuit and the battery and configured to rectify the induction current so as to charge the battery. The screen according to the embodiments of the present disclosure and the device comprising the screen can provide a charging current for the battery of the electronic product by using a circuit built in the screen.
    Type: Application
    Filed: April 14, 2016
    Publication date: March 1, 2018
    Inventors: Zhiyong WANG, Qing ZHAO, Shuai XU, Lei GUO, Zhengxin ZHANG
  • Patent number: 9875991
    Abstract: A package module includes a power module, a first thermal dissipating component and a packaging plastic. The power module includes a substrate and at least one power semiconductor component disposed on the substrate. The first thermal dissipating component is disposed over the power module. The packaging plastic covers the power module and the first thermal dissipating component, wherein a portion of the first thermal dissipating component is exposed from the packaging plastic.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: January 23, 2018
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Le Liang, Shou-Yu Hong, Zhen-Qing Zhao
  • Patent number: 9860852
    Abstract: A method is provided in one example embodiment and may include calculating, by one or more of a plurality of small cell radios, one or more sets of candidate power control parameters using a first interference constraint for uplink user equipment (UE) transmissions for UE served by the one or more of the plurality of small cell radios; determining, at a central management entity, whether an average of a sum of an expected interference for UE associated with the plurality of small cell radios violates a second interference constraint for any of the one or more sets of candidate power control parameters; and generating one or more messages for each of the plurality of small cell radios identifying one or more particular sets of power control parameters that provide for meeting the second interference constraint.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: January 2, 2018
    Assignee: Cisco Technology, Inc.
    Inventors: Ritesh K. Madan, Rohit Umesh Nabar, Vikram Chandrasekhar, Kedar Durgadas Shirali, Qing Zhao
  • Publication number: 20170358516
    Abstract: A power module is disclosed. The power module includes a first substrate, a first metal layer, at least one conductive structure and at least one power device. The first metal layer is disposed on the first substrate. The first metal layer has a first thickness d1. The first thickness d1 satisfies: 5 ?m?d1?50 ?m. The conductive structure is disposed at a position different to the first metal layer on the first substrate. The conductive structure has a second thickness d2. The second thickness d2 satisfies: d2?100 ?m. The power device is disposed on the first substrate, the first metal layer or the conductive structure. The driving electrode of the power device is electrically connected to the first metal layer. The power electrode of the power device is electrically coupled to the conductive structure.
    Type: Application
    Filed: August 7, 2017
    Publication date: December 14, 2017
    Inventors: Shou-Yu HONG, Gan-Yu ZHOU, Jian-Hong ZENG, Zhen-Qing ZHAO
  • Patent number: 9826545
    Abstract: An example method is provided in one example embodiment and includes receiving performance metric information from a plurality of small cell radios, wherein the performance metric information includes, at least in part, a number of user equipment that are to be scheduled on a first type and a second type of subframes for each small cell radio; determining resource allocation parameters for the plurality of small cell radios; exchanging interference information between two or more small cell radios of the plurality of small cell radios that includes an indication of whether a particular small cell radio is interfering with or is interfered by another small cell radio of the two or more small cell radios; and scheduling downlink resource transmissions on the first type and the second type of subframes for user equipment served by the two or more small cell radios.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: November 21, 2017
    Assignee: Cisco Technology, Inc.
    Inventors: Ritesh K. Madan, Vikram Chandrasekhar, Rohit Umesh Nabar, Kedar Durgadas Shirali, Qing Zhao
  • Patent number: 9820296
    Abstract: An example method is provided in one example embodiment and includes receiving performance metric information from a plurality of small cell radios, wherein the performance metric information includes, at least in part, a number of user equipment that are to be scheduled on a first type and a second type of subframes for each small cell radio; determining resource allocation parameters for the plurality of small cell radios; exchanging interference information between two or more small cell radios of the plurality of small cell radios that includes an indication of whether a particular small cell radio is interfering with or is interfered by another small cell radio of the two or more small cell radios; and scheduling downlink resource transmissions on the first type and the second type of subframes for user equipment served by the two or more small cell radios.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: November 14, 2017
    Assignee: Cisco Technology, Inc.
    Inventors: Ritesh K. Madan, Vikram Chandrasekhar, Rohit Umesh Nabar, Kedar Durgadas Shirali, Qing Zhao
  • Patent number: 9806010
    Abstract: A method of fabricating a package module includes placing a pin frame having plural pins on a circuit substrate; bonding the pins to corresponding bonding areas on a circuit substrate, thereby connecting the pins to the bonding areas; cutting off a connecting portion of the pin frame; and bending the pins to be vertical to the circuit substrate. By placing the pins on the corresponding bonding areas on the circuit substrate through the pin frame, and then cutting off the connecting portion of the pin frame and bending the pins, the efficiency of assembling the package module can be greatly promoted.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: October 31, 2017
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Kai Lu, Zhen-Qing Zhao, Tao Wang
  • Patent number: 9794293
    Abstract: A system is provided that includes one or more computing servers and a processing circuit for monitoring data transactions of the computing servers. Each of the computing servers is configured to provide respective services to remote users. The processing circuit is configured to monitor data transactions of at least one of the computing servers, which is associated with a user account. A security policy of the user account includes a set of conditions that are indicative of unauthorized access when the conditions are satisfied by various characteristics of the monitored data. The processing circuit is configured to determine a threat level based on the characteristics of the data transactions and the conditions of the security policy. In response to the threat level exceeding a first threshold level indicated in the security policy of the user account, the processing circuit sends a notification to an authorized user of the user account.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: October 17, 2017
    Assignee: 8x8, Inc.
    Inventors: Bryan Martin, Zhishen Liu, Qing Zhao
  • Publication number: 20170289923
    Abstract: A method is provided in one example embodiment and may include calculating, by one or more of a plurality of small cell radios, one or more sets of candidate power control parameters using a first interference constraint for uplink user equipment (UE) transmissions for UE served by the one or more of the plurality of small cell radios; determining, at a central management entity, whether an average of a sum of an expected interference for UE associated with the plurality of small cell radios violates a second interference constraint for any of the one or more sets of candidate power control parameters; and generating one or more messages for each of the plurality of small cell radios identifying one or more particular sets of power control parameters that provide for meeting the second interference constraint.
    Type: Application
    Filed: June 17, 2017
    Publication date: October 5, 2017
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Ritesh K. Madan, Rohit Umesh Nabar, Vikram Chandrasekhar, Kedar Durgadas Shirali, Qing Zhao
  • Publication number: 20170288289
    Abstract: A tunable filter includes a first waveguide body, a second waveguide body, a metal plate, a tuning piece, and a driving piece. A first cavity is disposed in the first waveguide body, and a second cavity is disposed in the second waveguide body. The metal plate is sandwiched between the first waveguide body and the second waveguide body, multiple windows are disposed on the metal plate, and the first cavity and the second cavity are in communication and are symmetrically distributed on both sides of the metal plate. The tuning piece includes a dielectric pull-rod and multiple metal sheets connected to the dielectric pull-rod, the dielectric pull-rod protrudes out of the first waveguide body and is connected to the driving piece, the multiple metal sheets are disposed inside the first cavity, and the multiple metal sheets are disposed corresponding to the multiple windows.
    Type: Application
    Filed: June 16, 2017
    Publication date: October 5, 2017
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Qing ZHAO, Tao TIAN, Jibin ZHOU
  • Publication number: 20170277650
    Abstract: Embodiments of the disclosure disclose user equipment and a method for data transmission, and the user equipment includes: a USB Type-C interface, a USB physical layer, an audio codec and an analog switch device. A left channel terminal and a right channel terminal of the audio codec and a data transmission terminal of the USB physical layer multiplex D+ and D? pins of the USB Type-C interface. The first analog switch device is configured to, when detecting that an analog audio cable is inserted into the USB Type-C interface, switch the D+ and D? pins of the USB Type-C interface to connect the left channel terminal and the right channel terminal of the audio codec, respectively.
    Type: Application
    Filed: August 18, 2016
    Publication date: September 28, 2017
    Inventors: Qing ZHAO, Wei WANG
  • Patent number: 9756640
    Abstract: Systems, methods, apparatus, and techniques are provided for transmitting information to user equipment (UE) in a communications network. Data is generated in (i) a first frequency range associated with a first set of carriers and (ii) a second frequency range associated with a second set of carriers, where the first frequency range specifies a first communications cell and the second frequency range specifies a second communications cell. The first cell, is assigned as a primary cell to a first set of UEs in the communications network. Control data is transmitted to both the first set of UEs and a second set of UEs using at least a portion of the first set of carriers.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: September 5, 2017
    Assignee: Marvell World Trade Ltd.
    Inventors: Jihwan P. Choi, Qing Zhao, Hui-Ling Lou
  • Patent number: 9756654
    Abstract: Embodiments include starting a first timer if a queue state associated with a user equipment (UE) is estimated to equal zero bytes of data and if a last buffer status report received from the UE indicated the queue state to be greater than zero bytes of data, sending a control message granting uplink resources to the UE if the first timer expires, and determining the queue state associated with the UE based, at least in part, on a response to the control message. In specific embodiments the first timer expires if neither a scheduling request nor a buffer status report is received during a first timer interval after the first timer is started. Further embodiments include stopping the first timer if a scheduling request or a buffer status report is received before the first timer expires.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: September 5, 2017
    Assignee: Cisco Technology, Inc.
    Inventors: Vikram Chandrasekhar, Kedar D. Shirali, Ritesh K. Madan, Qing Zhao, Sushanth Chandappa Kulal
  • Publication number: 20170211709
    Abstract: A four-way switching valve core, comprising: a valve core shell; a rotation axis, with its upper end penetrating through the valve core shell; a fixing seat, connected to a lower end of the rotation axis; an upper ceramic plate, connected to a lower end of the fixing seat; a bottom cover, on which is provided with four water input-output ports, and is connected to a lower end of the valve core shell; a lower ceramic plate, on which is provided with four water passage holes, connected to and in communication with the four water input-output ports, and is connected to the bottom cover; and a water passage slot set, disposed on the upper ceramic plate, used to open and close the water passage holes. The four-way switching valve core further includes: a slot hole, a bead, a spring, and four position blocking slots.
    Type: Application
    Filed: January 20, 2017
    Publication date: July 27, 2017
    Inventors: BU-KONG XIE, SHANG-GUI CHEN, QING-ZHAO HE