Patents by Inventor Di Zhang

Di Zhang 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: 20200152151
    Abstract: The present disclosure provides a gate on array (GOA) detection circuit and a detection method. The GOA detection circuit includes a GOA circuit module and a detection signal collection module. The GOA circuit module includes a plurality of scanning lines, a GOA circuit, a plurality of common control thin film transistors (TFT), and a plurality of single-stage control TFTs. An output end of each scanning line is connected to a signal collection line. A gate of each common control TFT is connected to a detection signal control wire of the detection signal collection module, and a source of each common control TFT is connected to the signal collection line. A test point for detecting an electrical signal is disposed on the signal collection line.
    Type: Application
    Filed: October 12, 2018
    Publication date: May 14, 2020
    Applicant: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Di ZHANG
  • Patent number: 10651383
    Abstract: A flow deflector, an inkjet printing method, an inkjet printing device, and a method for manufacturing a display substrate are provided. The flow deflector includes a plate-shaped body, and the plate-shaped body includes a first surface and a second surface opposite to each other, a plurality of through holes is arranged in the plate-shaped body, each of the plurality of through holes penetrates from the first surface to the second surface, and comprises a first opening formed on the first surface and a second opening formed on the second surface, and an opening area of the first opening is larger than an opening area of the second opening.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: May 12, 2020
    Assignees: BEJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Di Zhang
  • Publication number: 20200145025
    Abstract: An encoding method and apparatus, and a computer storage medium, wherein same are used to improve the LDPC encoding performance, and are thus suitable for 5G systems. The encoding method comprises: determining a base graph of a low density parity check code (LDPC) matrix, and constructing a cyclic coefficient index matrix; determining a sub-cyclic matrix according to the cyclic coefficient index matrix; and carrying out LDPC encoding according to the sub-cyclic matrix and the base graph.
    Type: Application
    Filed: May 15, 2018
    Publication date: May 7, 2020
    Applicant: China Academy of Telecommunications Technology
    Inventors: Jiaqing Wang, Xijin Mu, Di Zhang, Baoming Bai, Shaohui Sun
  • Publication number: 20200119796
    Abstract: This application provides a channel state information transmission method, an access network device, and a terminal device. The method includes: receiving, by an access network device, channel state information CSI reported by a terminal device, where the CSI includes a first precoding matrix indication PMI and a second PMI, and determining, by the access network device, a precoding matrix W based on the first PMI, the second PMI, and a preset codebook, where W meets W=W1×W2, W1 corresponds to the first PMI, W2 corresponds to the second PMI, the second PMI indicates some column vectors of W2 and an amplitude association relationship between the some column vectors of W2 and remaining column vectors of W2, and a quantity of columns of W is greater than 2. According to the method, CSI feedback overheads of the terminal device are effectively reduced.
    Type: Application
    Filed: December 16, 2019
    Publication date: April 16, 2020
    Inventors: Di ZHANG, Ruiqi ZHANG, Xueru LI
  • Publication number: 20200119822
    Abstract: An interference power measurement method and a device are provided. The method includes: receiving, by a terminal, first signaling that carries first indication information, where the first indication information is used to indicate n first channel state information-reference signal CSI RS resources, and a jth first CSI RS resource is associated with a power parameter Pc,j; and sending, by the terminal, a channel quality indicator CQI, where the CQI is determined based on a total interference power. The total interference power is a linear weighting result of an interference power measured on each of the n first CSI RS resources and an interference power I0 measured on a zero power CSI RS resource. A weighting coefficient of an interference power Ij measured on the jth first CSI RS resource is a function of the power parameter Pc,j, and a weighting coefficient of I0 is a function of 1 - ? j = 1 n ? P c , j .
    Type: Application
    Filed: December 13, 2019
    Publication date: April 16, 2020
    Inventors: Xueru LI, Ruiqi ZHANG, Di ZHANG, Yongxing ZHOU
  • Publication number: 20200119795
    Abstract: The present disclosure relates to channel state measurement methods and apparatus. One example method includes selecting, by a network device from N channel state information reference signal (CSI-RS) resources, a target CSI-RS resource and a target channel state information-interference measurement (CSI-IM) resource group associated with the target CSI-RS resource, where an ith CSI-RS resource in the N CSI-RS resources is associated with ni CSI-IM resource groups, and a kth CSI-IM resource group in the ni CSI-IM resource groups includes xik CSI-RS resources in the N CSI-RS resources except the ith CSI-RS resource, and sending, by the network device, first indication information by using first signaling, where the first indication information indicates the target CSI-RS resource and the target CSI-IM resource group.
    Type: Application
    Filed: December 16, 2019
    Publication date: April 16, 2020
    Inventors: Ruiqi ZHANG, Xueru LI, Di ZHANG
  • Publication number: 20200119787
    Abstract: A channel state information sending method, a channel state information receiving method, and a device are disclosed, to reduce resource overheads required when a terminal device feeds back CSI to a network device in a scenario of a high precision codebook—based precoding matrix. The method includes: determining, by a terminal device, a precoding matrix W; sending, by the terminal device, a signal including CSI to a network device; obtaining, by the network device, an RI and indication information based on the signal including the CSI; obtaining, by the network device, a PMI2 based on the RI and the indication information; and determining, by the network device, the precoding matrix W based on the rank indicator RI and the second precoding matrix indicator PMI2.
    Type: Application
    Filed: November 26, 2019
    Publication date: April 16, 2020
    Inventors: Ruiqi ZHANG, Xueru LI, Di ZHANG
  • Publication number: 20200107341
    Abstract: This application provides a signal transmission method and a communications apparatus. The method includes: receiving, by a terminal device, configuration information, where the configuration information is used to configure the terminal device to transmit M signals in a first time unit, the terminal device has N antenna panels, M is an integer greater than or equal to 1, and N is an integer greater than or equal to 2; and transmitting, by the terminal device, at least one of the M signals based on first information by using at least one of the N antenna panels. According to embodiments of this application, the terminal device can select a panel based on the first information and select a signal that needs to be transmitted.
    Type: Application
    Filed: October 16, 2019
    Publication date: April 2, 2020
    Inventors: Di ZHANG, Xu ZHANG
  • Publication number: 20200092894
    Abstract: A channel quality information transmission method and system are described. A terminal device determines a reporting priority of channel quality information according to a reporting priority rule when reporting of first channel quality information conflicts with reporting of second channel quality information. The device further determines to-be-reported content or to-be-discarded content based on the reporting priority of the channel quality information. The terminal device reports the to-be-reported content to a network device.
    Type: Application
    Filed: November 19, 2019
    Publication date: March 19, 2020
    Inventors: Di ZHANG, Jianqin LIU
  • Patent number: 10582440
    Abstract: Disclosed is a network access management method. The network access management method includes: acquiring a network transmission state between a network device and a terminal having assessed the network device; and setting an access control parameter of the network device as a target parameter value, herein the target parameter value is used for controlling the number of terminals assessing the network device to match the network transmission state.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: March 3, 2020
    Assignee: ZTE CORPORATION
    Inventors: Di Zhang, Haitao Zhao, Guanjun Tan
  • Patent number: 10581961
    Abstract: Disclosed are a method and device for detecting an abnormal load. The method includes: collecting data of each load item in all hosts; pre-processing to obtain a second sequence corresponding to each load item; obtaining a coefficient matrix and a detail vector; computing a weighted mean of abnormal load probabilities of all the coefficient vectors, to obtain an abnormal load probability of each second sequence; comparing the abnormal load probability with a confidence interval, and judging whether there is an abnormal load, and judging that there is no abnormity in the corresponding second sequence if the abnormal load probability of each second sequence is in the confidence interval; judging whether there is an abnormal load according to data of all load items and the abnormal load probability of each second sequence; and finding a bearing host that has the abnormal load from the current online service.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: March 3, 2020
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Yuezhi Zhou, Jinzhao Liu, Di Zhang, Yaoxue Zhang
  • Patent number: 10581342
    Abstract: A system includes a voltage converter and a controller for controlling the operation of the voltage converter. The voltage converter includes a plurality of legs, wherein each leg includes a first and a second set of silicon (Si)-based power devices. The first set of Si-based power devices includes a first and second Si-based power devices connected to each other at a first interconnection node and the second set of Si-based power devices includes a third and fourth Si-based power devices connected to each other at a second interconnection node. The first and second set of Si-based power devices are coupled across a first and second DC voltage sources respectively. A first set of Silicon-Carbide (SiC) based power devices is coupled across the first and second interconnection nodes. The system also includes a snubber capacitor connected across the first and the second interconnection nodes.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: March 3, 2020
    Assignee: General Electric Company
    Inventors: Di Zhang, Jiangbiao He, Sachin Madhusoodhanan
  • Patent number: 10581640
    Abstract: This application discloses a channel estimation method, a reference signal sending method, an apparatus, and a system, and belongs to the communications field. The method includes: when a first precoding weight of a first reference signal and a second precoding weight of a second reference signal are the same, receiving, by a first network device, the first reference signal in a first time unit according to a first pattern, and receiving the second reference signal in a second time unit according to a second pattern; and performing, by the first network device, channel estimation on a channel in the second time unit.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: March 3, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Kunpeng Liu, Di Zhang
  • Publication number: 20200068548
    Abstract: The present disclosure relates to beam configuration methods and apparatus. One example method include receiving, by a terminal, beam configuration information from a network device, where the beam configuration information is used to instruct the terminal to transmit a signal by using a first beam, and transmitting, by the terminal, the signal by using at least the first beam when a first preset duration starting from a time point expires, where the first time point is a time point at which the terminal sends an acknowledgement (ACK) message for the beam configuration information to the network device.
    Type: Application
    Filed: November 5, 2019
    Publication date: February 27, 2020
    Inventors: Peng GUAN, Yi QIN, Jianqin LIU, Peng JIANG, Di ZHANG
  • Publication number: 20200043387
    Abstract: The present disclosure relates to a detachable flexible display structure, a flexible display screen, a method of manufacturing the same, and a display device. The detachable flexible display structure, having an active area and a non-active area arranged on outside of the active area, includes: a support substrate having a surface in the non-active area provided with a rib; and a flexible display screen formed on the support substrate and detachable from the support substrate. The flexible display screen is formed with an arch portion for covering the rib at a position corresponding to the rib so that the flexible display screen can be bent at the arch portion. The above detachable flexible display structure can reduce the stress generated at the arch portion when the flexible display screen is bent, so that it can prevent the peripheral metal trace from breaking, which improves the reliability of the flexible display.
    Type: Application
    Filed: October 10, 2019
    Publication date: February 6, 2020
    Inventors: Yang YANG, Shanhe Wang, Di Zhang
  • Patent number: 10554273
    Abstract: A channel information sending method, a data sending method, and a device are provided, to improve feedback precision of a precoding matrix. A first device includes: a receiving module, configured to receive a reference signal; a processing module, configured to measure the reference signal to obtain first channel information and second channel information; and a sending module, configured to send the first channel information and the second channel information. When generating the precoding matrix, the second device may perform weighted combination on M first vectors based on the weighted combination factor indicated by the received second channel information, instead of selecting only one eigenvector from a plurality of eigenvectors, so that the generated precoding matrix is more precise.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: February 4, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Kunpeng Liu, Di Zhang
  • Patent number: 10547251
    Abstract: A method for shutting down a phase-leg of a three-level active neutral point clamped converter is provided. The method includes the following steps. A determining step determines if a switch fault has occurred, and if a switch fault has occurred then each switch of the plurality of switches are turned off. If a switch fault has not occurred and a shutdown is requested, then an operating step operates the plurality of switches to turn off a first switch and a fourth switch. A waiting step waits for a first predetermined time period. An operating step operates the plurality of switches to turn on a second switch and a third switch. A waiting step is repeated. An operating step operates the plurality of switches to turn off a fifth switch and a sixth switch. A waiting step is repeated. An operating step turns off the second switch and the third switch.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: January 28, 2020
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Di Pan, Mark Edward Dame, Di Zhang, Jiangbiao He
  • Publication number: 20200020293
    Abstract: A gate on array (GOA) circuit and a built-in touch display panel are provided. The GOA circuit collects a scan signal from a GOA unit, detects whether the scan signal from the GOA unit is abnormal in order to identify an abnormal GOA unit, and then restores a scan signal from the abnormal GOA unit. Thus, it is ensured that the GOA circuit can output driving signals normally, and product yield is increased.
    Type: Application
    Filed: December 12, 2018
    Publication date: January 16, 2020
    Inventor: Di ZHANG
  • Publication number: 20200021542
    Abstract: Communication methods and apparatuses are provided. A method may include: obtaining at least a part of a communication message in a communication session page of a communication application, the communication session page being used for conducting communications between an end user and at least one peer user; performing content recognition of the communication message; and configuring a to-be-sent message corresponding to a message sending control in the communication session page, so that the to-be-sent message matches a content recognition result for the communication message. Using the technical solutions of the present disclosure, the efficiency of communications can be improved.
    Type: Application
    Filed: September 20, 2019
    Publication date: January 16, 2020
    Inventors: Lili Zhang, Di Zhang, Yongqiang Pan, Weinan He, Daping Zhang, Jianjun Zhao
  • Publication number: 20190388470
    Abstract: Disclosed herein is a polynucleotide construct comprising one or more nuclease recognition sequences upstream and downstream of a Gene editing multi-site that comprises a plurality of nuclease recognition sequences. The plurality of nuclease recognition sequences facilitate insertion of one or more exogenous donor genes into the host cell.
    Type: Application
    Filed: March 25, 2019
    Publication date: December 26, 2019
    Inventors: Sicco Hans Popma, Di Zhang