Patents by Inventor Lei Huang

Lei Huang 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: 10554327
    Abstract: An transmission apparatus of the present disclosure comprises a transmission signal generator which, in operation, generates a transmission signal that includes a non-legacy preamble and a data field, the non-legacy preamble comprising a first field for indicating a number of spatial streams (Nss) in the data field and a second field for indicating one of a plurality of modulation and coding schemes (MCSs), wherein two or more frequency diversity transmission schemes are supported and each of the two or more frequency diversity transmission schemes is specified based on a value of the Nss; and a transmitter which, in operation, transmits the generated transmission signal.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: February 4, 2020
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Lei Huang, Yoshio Urabe, Rojan Chitrakar
  • Patent number: 10553826
    Abstract: The embodiments of the present invention provide an optical waveguide and manufacturing method thereof, display substrate and display device. The optical waveguide comprises an optical fiber array arranged on a surface; each optical fiber in the optical fiber array has a cylindrical shape; the axis of each optical fiber is perpendicular to the surface. With the effect of limitation and mixing of the optical fibers, the intensity and color of the light from the optical waveguide are basically homogeneous in the whole emitting range, effectively improving the viewing angle characteristics of the display device, and solving the problem of uneven brightness and color bias in the range of viewing angle.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: February 4, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhijie Ye, Rui Peng, Xinxin Wang, Lei Huang, Wenbin Jia
  • Publication number: 20200037277
    Abstract: A downlink synchronization signal sending method includes: generating, by a base station, notification information including a status indication indicating a sending status of a downlink synchronization signal on an unlicensed frequency band, where the sending status indicates whether the downlink synchronization signal is successfully sent or fails to be sent; and sending, by the base station, the notification information by using a licensed frequency band. The downlink synchronization signal is sent with assistance of the licensed frequency band, to improve efficiency of sending the downlink synchronization signal on the unlicensed frequency band.
    Type: Application
    Filed: September 20, 2019
    Publication date: January 30, 2020
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Lei HUANG, Yingpei LIN, Ji WU
  • Publication number: 20200022185
    Abstract: Embodiments of this application provide a signal transmission method and a device. The method includes: performing, by a network device, idle carrier sense in a downlink beam direction when a predefined sending time of each synchronization frame in a synchronization frame set arrives, where the synchronization frame set includes N synchronization frames, and each synchronization frame includes at least one synchronization signal block; and sending a synchronization signal block to a terminal in the downlink beam direction in a synchronization frame in which idle carrier sense succeeds, where the synchronization signal block includes a synchronization signal. The network device performs idle carrier sense in the downlink beam direction when the predefined sending time of each synchronization frame arrives, and sends the synchronization signal block including the synchronization signal in the downlink beam direction in the synchronization frame in which idle carrier sense succeeds.
    Type: Application
    Filed: September 26, 2019
    Publication date: January 16, 2020
    Inventors: Jun LUO, Jiayin ZHANG, Lei HUANG
  • Publication number: 20200014298
    Abstract: A charge pump circuit generates a charge pump voltage that powers a bias circuit. The bias circuit generates a reference current and generates switch currents from the reference current. Gate-source voltages are generated from the switch currents and applied to switching components of switch circuits to connect two nodes. The gate-source voltages can be generated in the bias circuit and provided to the switch circuits. The gate-source voltages can also be generated in the switch circuits.
    Type: Application
    Filed: September 16, 2019
    Publication date: January 9, 2020
    Applicant: FAIRCHILD SEMICONDUCTOR CORPORATION
    Inventor: Lei HUANG
  • Patent number: 10531311
    Abstract: This application discloses an uplink access method, a base station, and user equipment. The method of this application includes: in a process in which user equipment performs initial random access to a high-frequency base station, allocating, by the high-frequency base station, a non-contention-based sequence to the user equipment, and sending the non-contention-based sequence to the user equipment by using a first random access response message; after the user equipment completes the initial random access to the high-frequency base station and in a periodical beam training process, determining, by the high-frequency base station, an optimal receiving wide beam of the high-frequency base station and an optimal sending narrow beam of the user equipment by detecting, on each receiving wide beam of the high-frequency base station, the non-contention-based sequence sent by the user equipment; and sending, by the high-frequency base station, a second random access response message to the user equipment.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: January 7, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Lei Huang, Yi Wang
  • Patent number: 10530621
    Abstract: Provided is a transmission apparatus including a transmission signal generator which, in operation, generates a transmission signal that includes a legacy preamble, a non-legacy preamble and a data field. The non-legacy preamble comprises a first signal field and a second signal field. The first signal field comprises a second signal field compression subfield and a number of second signal field symbols subfield. The second signal field symbols subfield indicates a number of second signal field symbols when the second signal field compression subfield indicates that a full bandwidth containing first and second frequency subbands is not allocated for multi-user (MU) MIMO transmission. The number of second signal field symbols indicates a number of MU MIMO users when the second signal field compression subfield indicates that the full bandwidth is allocated for MU MIMO transmission. The transmission apparatus includes a transmitter which, in operation, transmits the generated transmission signal.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: January 7, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Lei Huang, Yoshio Urabe, Michael Hong Cheng Sim
  • Publication number: 20200008238
    Abstract: A channel access method is provided. Under the method, a network element performs random backoff listen before talk (LBT) for channel preemption, and after the preemption succeeds, performs signal transmission in the first transmission time interval TTI within a maximum channel occupancy time MCOT. The network element also performs nonrandom backoff LBT for channel preemption before another at least one TTI within the maximum channel occupancy time MCOT. This is to ensure coexistence and performance of systems when an LBT requirement of a high unlicensed frequency band is met.
    Type: Application
    Filed: September 9, 2019
    Publication date: January 2, 2020
    Inventors: Lei HUANG, Yingpei LIN, Jiayin ZHANG
  • Publication number: 20190394121
    Abstract: The present invention provides a real-time video transmission method for a multipath network. The multipath network comprises at least two video stream transmission sub-paths from a transmitting terminal to a receiving terminal. The real-time video transmission method for a multipath network comprises steps of: 1) by the transmitting terminal, packing original video stream data and sequentially adding a tag into a packet header to obtain multipath transmission data, and sending the multipath transmission data packets to different ones of the video stream transmission sub-paths for transmission; and, 2) by the receiving terminal, receiving and parsing the multipath transmission data packets, and restoring the original video data stream according to the tags in the packet headers. The present invention can take full advantage of outlet and inlet bandwidths at two ends of a transmission path, and can effectively improve stability in video transmission to improve user experience.
    Type: Application
    Filed: December 15, 2016
    Publication date: December 26, 2019
    Applicant: CATON TECHNOLOGY (SHANGHAI) LIMITED
    Inventors: Wang WANG, Lei HUANG
  • Publication number: 20190391274
    Abstract: A standalone GNSS receiver saves at each epoch a position and observables based on one or more signals. A reference position associated with a reference epoch is saved with reference observables. At a later epoch, the current position is determined by reference to the reference position and the reference epoch by performing a real time kinematic process. When cycle slip and/or signal lock has occurred, an ambiguity resolution is performed in real time kinematic. A standalone GNSS receiver with ambiguity resolution and real time kinematic at a current epoch achieves centimeter-level position accuracy by fixing ambiguities to integer and performing real time kinematic upon signal restoration. The saved reference data and coordinate serve as a reference station until signal restoration.
    Type: Application
    Filed: September 18, 2018
    Publication date: December 26, 2019
    Inventors: Kongzhe CHEN, Gang HU, Lei HUANG
  • Publication number: 20190386864
    Abstract: A transmission method comprises: generating a transmission signal including OFDM symbols, wherein the last OFDM symbol of the OFDM symbols can be partitioned into four segments, and wherein the generating includes: computing an initial padding factor value associated with one of the four segments and computing an initial number of OFDM symbols; determining a user with a longest packet duration among plural users; determining a common padding factor value being the initial padding factor value and a common number of OFDM symbols being the initial number of OFDM symbols of the determined user with the longest packet duration; adding pre-FEC padding bits toward one of four possible boundaries of the last OFDM symbol, the one of four possible boundaries being represented by the determined common padding factor value; and adding post-FEC padding bits in remaining segment(s) of the last OFDM symbol; and transmitting the generated transmission signal.
    Type: Application
    Filed: August 27, 2019
    Publication date: December 19, 2019
    Inventors: LEI HUANG, YOSHIO URABE, MICHAEL HONG CHENG SIM
  • Publication number: 20190377621
    Abstract: A method of running network application based on POS terminal, including: receiving an operation on a network application; calling a first interface of a JS layer according to the operation; parsing the first interface and acquiring an object corresponding to the first interface; transmitting a corresponding signal through the object and executing a slot function associated with the signal; and calling a second interface of a plug-in layer through the slot function, and calling a hardware module corresponding to the second interface to perform the operation.
    Type: Application
    Filed: September 13, 2017
    Publication date: December 12, 2019
    Inventors: Lei Huang, Sining Ye, Lihong Xie
  • Publication number: 20190379366
    Abstract: A voltage translation device is disclosed. The voltage translation device includes an input circuit, operating in a first voltage domain, that is configured to receive an input signal. The voltage translation device also includes an output circuit, operating in a second voltage domain, that includes a latch circuit. The voltage translation device also includes a driver circuit that is controlled by the input circuit to pass a voltage from the first voltage domain to the latch circuit in order to trigger the latch circuit to output an output signal in the second voltage domain according to the input signal in the first voltage domain.
    Type: Application
    Filed: June 11, 2018
    Publication date: December 12, 2019
    Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Lei HUANG
  • Publication number: 20190358140
    Abstract: Cosmetic compositions are widely used to obtain certain benefits like e.g. anti-aging, skin lightening and moisturizing effect. These benefits are delivered by benefit agents (actives) like e.g. anti-oxidants, hyaluronic acid and resorcinol, pheynylethyl resorcinol and 4-alkyl substituted resorcinol. However, these actives have a certain shelf life beyond which they tend to degrade in terms of chemical activity and/or their color stability. The present invention discloses a novel process to prepare cosmetic compositions that improved color stability of resorcinol, pheynylethyl resorcinol and 4-alkyl substituted resorcinol and compositions comprising such actives when prepared as per said process.
    Type: Application
    Filed: November 27, 2017
    Publication date: November 28, 2019
    Applicant: Conopco, Inc., d/b/a UNILEVER
    Inventors: Lei HUANG, Teanoosh MOADDEL
  • Publication number: 20190350063
    Abstract: A dynamic lighting method and apparatus (100), in which at least one electrical parameter changing time period is configured during a lighting period; the method comprises: step 1, a power (PW) output starting electrical parameter and a power (PW) output ending electrical parameter are present within each electrical parameter changing time period, wherein a power (PW) output electrical parameters changes according to a same trend from the starting electrical parameter to the ending electrical parameter, and a starting point electrical parameter and an ending point electrical parameter within an electrical parameter changing time period are respectively equal to the electrical parameters within a non-electrical parameter changing time period before and after the electrical parameter changing time period; step 2, according to the step 1, enabling a dynamic lighting component to change lighting parameters during the electrical parameter changing time period, such that the change of the lighting parameters causes
    Type: Application
    Filed: July 24, 2017
    Publication date: November 14, 2019
    Inventors: Ziping CHEN, Mengzhen CHEN, Lei HUANG
  • Patent number: 10461634
    Abstract: A charge pump circuit generates a charge pump voltage that powers a bias circuit. The bias circuit generates a reference current and generates switch currents from the reference current. Gate-source voltages are generated from the switch currents and applied to switching components of switch circuits to connect two nodes. The gate-source voltages can be generated in the bias circuit and provided to the switch circuits. The gate-source voltages can also be generated in the switch circuits.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: October 29, 2019
    Assignee: FAIRCHILD SEMICONDUCTOR CORPORATION
    Inventor: Lei Huang
  • Patent number: 10461280
    Abstract: A double-sided electroluminescent display panel and a display device are provided. The double-sided electroluminescent display panel includes: a first absorption polarization structure disposed on a first light-emitting surface of a transparent electroluminescent (EL) structure, and a first reflective polarization structure disposed on a second light-emitting surface of the transparent EL structure; wherein transmission axes of the first absorption polarization structure and the first reflective polarization structure are perpendicular to each other; the first absorption polarization structure is configured to absorb light of a first wave component and transmit light of a second wave component; the first reflective polarization structure is configured to transmit the light of the first wave component and reflect the light of the second wave component.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: October 29, 2019
    Assignees: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventors: Zhijie Ye, Yue Hu, Rui Peng, Jun Wang, Kai Xu, Lei Huang, Wenbin Jia, Xinxin Wang
  • Publication number: 20190327788
    Abstract: There is provided a communication method for a coordinator communication device, including generating a first scheduling element to be used by a first communication device and a second scheduling element to be used by a second communication device; and transmitting the first and second scheduling elements to the first and second communication devices. The second scheduling element includes a second allocation indicating a time-frequency resource allocated to the second communication device. The first scheduling element includes a first allocation indicating a time-frequency resource allocated to the first communication device and optionally includes a first virtual allocation that is a duplicate of the second allocation.
    Type: Application
    Filed: July 2, 2019
    Publication date: October 24, 2019
    Inventors: Masataka Irie, Lei Huang, Hong Cheng Michael Sim
  • Patent number: 10454198
    Abstract: A connecting mechanism includes a body and a detachable part connected with the body. The body includes a casing and a sliding component. The casing has an insertion hole for insertion of the detachable part. The sliding component is in sliding connection with the casing, and the sliding component has access holes and clamping holes in communication therewith. The detachable part includes insertion pieces. When the sliding component slides from a first position to a second position, the access holes are opposite to the insertion hole, and the insertion pieces extend into the access holes through the insertion hole. When the sliding component slides from the second position to the first position, the insertion pieces enter the clamping holes from the access holes, thereby locking the detachable part. The assembly and disassembly of the detachable part and the body are realized through the operation of the sliding component without tools.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: October 22, 2019
    Assignee: GOERTEK TECHNOLOGY CO., LTD.
    Inventors: Zhongli Zhang, Ying Zhang, Lei Huang
  • Patent number: 10447519
    Abstract: A transmission method comprises: generating a transmission signal including OFDM symbols, wherein the last OFDM symbol of the OFDM symbols can be partitioned into four segments, and wherein the generating includes: computing an initial padding factor value associated with one of the four segments and computing an initial number of OFDM symbols; determining a user with a longest packet duration among plural users; determining a common padding factor value being the initial padding factor value and a common number of OFDM symbols being the initial number of OFDM symbols of the determined user with the longest packet duration; adding pre-FEC padding bits toward one of four possible boundaries of the last OFDM symbol, the one of four possible boundaries being represented by the determined common padding factor value; and adding post-FEC padding bits in remaining segment(s) of the last OFDM symbol; and transmitting the generated transmission signal.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: October 15, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Lei Huang, Yoshio Urabe, Michael Hong Cheng Sim