Patents by Inventor Liming Wei
Liming Wei 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).
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Patent number: 11952536Abstract: Disclosed is a carbon-dioxide-responsive self-thickening intelligent fluid based on supramolecular self-assembly, which comprises a Gemini surfactant, a single-chain amide molecule having a tertiary amine head group and water, wherein the Gemini surfactant and the single-chain amide molecule are self-assembled to form a vesicle structure dispersed in water, with a hydrophilic head group being located outside and a hydrophobic tail group located inside. The method for preparing the carbon-dioxide-responsive self-thickening intelligent fluid of the present invention is simple, the injection viscosity is low, and the fluid is converted into a gel when encountering carbon dioxide, so that the viscosity is greatly increased.Type: GrantFiled: May 9, 2022Date of Patent: April 9, 2024Assignee: PetroChina Company LimitedInventors: Chunming Xiong, Falin Wei, Haiyang Yang, Yongjun Xie, Liming Shao, Kang Peng, Zhihui Zeng
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Patent number: 11949420Abstract: A clock spread spectrum circuit, an electronic equipment, and a clock spread spectrum method are disclosed. The clock spread spectrum circuit includes a control circuit, a signal generation circuit, and a duty cycle adjustment circuit. The duty cycle adjustment circuit is configured to generate a target voltage having a duty cycle that is equal to a target duty cycle, the control circuit is configured to generate a frequency control word according to a modulation parameter, and the frequency control word changes discretely with time; and the signal generation circuit is configured to receive the target voltage and the frequency control word and generate and output a spread spectrum output signal that is spectrum-spread according to the target voltage and the frequency control word, and the spread spectrum output signal corresponds to the frequency control word and a duty cycle of the spread spectrum output signal is the target duty cycle.Type: GrantFiled: June 10, 2022Date of Patent: April 2, 2024Assignees: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Xiangye Wei, Liming Xiu, Yuhai Ma
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Patent number: 11949422Abstract: A pulse width modulation (PWM) circuit, a method for PWM, and an electronic device are provided. In the PWM circuit, a control word providing circuit can generate, based on an obtained target duty cycle, two target frequency control words with a ratio of the target duty cycle, and output the two target frequency control words to a pulse generation circuit, wherein a ratio of the first target frequency control word to the second target frequency control word is the target duty cycle; and the pulse generation circuit can output a target pulse signal with the target duty cycle under the control of the two target frequency control words.Type: GrantFiled: March 9, 2021Date of Patent: April 2, 2024Assignees: Beijing BOE Technology Development Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Xiangye Wei, Liming Xiu
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Publication number: 20240089003Abstract: An optical communication device, an optical communication system, and a method for establishing a communication connection are provided, relating to communications technology. In the optical communication device, the first driving circuit can control, based on the generated first target plaintext, the optical signal transmitting circuit to transmit the first optical signal, and control, based on the generated first key, the optical signal transmitting circuit to transmit the second optical signal. That is, an optical communication device that detects the optical signals can establish, based on the optical signals, a communication connection with the optical communication device that transmits the optical signals.Type: ApplicationFiled: March 9, 2021Publication date: March 14, 2024Inventors: Xiangye WEI, Liming XIU, Yiming BAI, Xin LI
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Publication number: 20240078201Abstract: Provide is a FIFO memory system. The FIFO memory system includes: a FIFO memory; a read clock frequency circuit, configured to provide at least two clock signals, wherein the at least two clock signals include a first clock signal and a second clock signal, a frequency of the first clock signal being greater than a frequency of the second clock signal; and a controller, configured to determine a data volume in the FIFO memory, control the read clock frequency circuit to output the first clock signal in a case that the data volume in the FIFO memory is in a first range, or control the read clock frequency circuit to output the second clock signal in a case that the data volume in the FIFO memory is in a second range, the lower limit of the first range being not less than an upper limit of the second range.Type: ApplicationFiled: July 1, 2022Publication date: March 7, 2024Inventors: Xiangye WEI, Liming XIU
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Patent number: 11916557Abstract: A clock spread spectrum circuit, an electronic equipment, and a clock spread spectrum method are disclosed. The clock spread spectrum circuit (10) includes a control circuit (11) and a signal generation circuit (12). The control circuit (11) is configured to generate a frequency control word according to a modulation parameter, and the frequency control word changes discretely with time; and the signal generation circuit (12) is configured to receive the frequency control word and generate and output a spread spectrum output signal that is spectrum-spread according to the frequency control word, and the spread spectrum output signal corresponds to the frequency control word.Type: GrantFiled: June 9, 2022Date of Patent: February 27, 2024Assignees: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Xiangye Wei, Liming Xiu, Yuhai Ma
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Patent number: 11917052Abstract: The present disclosure provides a hash algorithm circuit, a hash algorithm method, and an electronic device. The hash algorithm circuit is used to reduce fixed-length parallel data, and the reduced identifier can be used as an index reference, an identifier ID, an address extension bit, information summary, and so on. The hash algorithm circuit has the characteristics of low power consumption, low cost, etc., and can be integrated in a digital circuit.Type: GrantFiled: May 28, 2021Date of Patent: February 27, 2024Assignees: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Xiangye Wei, Liming Xiu
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Publication number: 20230228162Abstract: A pressure compensation device with an accumulator group for controlled pressure drilling includes an electrical flat valve, a check valve, an accumulator group, a flanged pup joint and a support base. The electrical flat valve is connected to the check valve and is mounted on a top surface of the support base. The accumulator group mounted on the whole support base is a pre-storage pressure compensation device for controlled pressure drilling, and is located at a downstream position of the check valve. The liquid inlet end of the accumulator group is connected to the check valve, and the liquid discharge end is connected to the flanged pup joint.Type: ApplicationFiled: September 7, 2020Publication date: July 20, 2023Applicants: CNPC BOHAI DRILING ENGINEERING COMPANY LIMITED, CHINA NATIONAL PETROLEUM CORPORATION, CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)Inventors: Jinshan MA, Baojiang SUN, Jintao QI, Liming WEI, Fengliang XI, Gang LIU, Zhiyuan WANG, Xing WANG, Haichao XU, Long MA, Jiacui LUAN, Lei CHEN, Guodong CHEN, Yuanlin ZHAO, Zisen YANG, Qiang HUANG, Menglei MA, Xiantao MENG, Hongyin WEI
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Patent number: 9860163Abstract: A source edge router initiates point-to-point (P2P) label switched paths (LSPs) to multiple receiver edge routers, sends one or more PATH messages to one or more nodes downstream of the source edge router for the P2P LSPs, wherein each one of the set of PATH messages includes a same identifier of a point-to-multipoint (P2MP) LSP that includes a session object that contains a tunnel identifier and a P2MP identifier, and receives from each of those nodes downstream of the source edge router, a set of one or more RESV messages, wherein each one of the received RESV messages received from a respective node downstream of the source edge router includes the identifier of the P2MP LSP and a label allocated by that node downstream of the source edge router.Type: GrantFiled: May 23, 2016Date of Patent: January 2, 2018Assignee: ERICSSON ABInventors: Rahul Aggarwal, George Apostolopoulos, Liming Wei
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Publication number: 20160326905Abstract: A vibration damping assembly for a piping unit includes a first pipe portion extending from an inlet to a first valve. Also included is a second pipe portion extending from the first valve to a second valve. Further included is a third pipe portion extending from the second valve to an outlet. Yet further included is at least one ring structure surrounding a portion of an outer surface of at least one of the first pipe portion, the second pipe portion and the third pipe portion, the at least one ring structure disposed in contact with the outer surface to damp vibration associated with the piping unit during operation.Type: ApplicationFiled: January 9, 2014Publication date: November 10, 2016Inventors: Hua ZHANG, Rui LI, Liming WEI, Qianhong FENG, Jianwei SHAO
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Publication number: 20160269282Abstract: A source edge router initiates point-to-point (P2P) label switched paths (LSPs) to multiple receiver edge routers, sends one or more PATH messages to one or more nodes downstream of the source edge router for the P2P LSPs, wherein each one of the set of PATH messages includes a same identifier of a point-to-multipoint (P2MP) LSP that includes a session object that contains a tunnel identifier and a P2MP identifier, and receives from each of those nodes downstream of the source edge router, a set of one or more RESV messages, wherein each one of the received RESV messages received from a respective node downstream of the source edge router includes the identifier of the P2MP LSP and a label allocated by that node downstream of the source edge router.Type: ApplicationFiled: May 23, 2016Publication date: September 15, 2016Inventors: Rahul AGGARWAL, George APOSTOLOPOULOS, Liming WEI
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Patent number: 9350646Abstract: A source edge router initiates point-to-point (P2P) label switched paths (LSPs) to multiple receiver edge routers, sends one or more PATH messages to one or more nodes downstream of the source edge router for the P2P LSPs, wherein each one of the set of PATH messages includes a same identifier of a point-to-multipoint (P2MP) LSP that includes a session object that contains a tunnel identifier and a P2MP identifier, and receives from each of those nodes downstream of the source edge router, a set of one or more RESV messages, wherein each one of the received RESV messages received from a respective node downstream of the source edge router includes the identifier of the P2MP LSP and a label allocated by that node downstream of the source edge router.Type: GrantFiled: December 9, 2013Date of Patent: May 24, 2016Assignee: ERICSSON ABInventors: Rahul Aggarwal, George Apostolopoulos, Liming Wei
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Patent number: 9240942Abstract: In one embodiment, a method includes identifying a packet at an upstream node in communication with a source and in communication with a downstream node through equal cost multiple paths including first and second multi-access networks, the packet transmitted on the first multi-access network and associated with a multicast group, and transmitting from the upstream node a request to the downstream node to join the group on the second multi-access network, if the upstream node is already transmitting data to the group on the second multi-access network, or a bandwidth utilization at the first multi-access network exceeds a specified threshold. An apparatus is also disclosed.Type: GrantFiled: February 28, 2011Date of Patent: January 19, 2016Assignee: Cisco Technology, Inc.Inventors: Yiqun Cai, Heidi Ou, Liming Wei, Apoorva Karan
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Publication number: 20140098817Abstract: A source edge router initiates point-to-point (P2P) label switched paths (LSPs) to multiple receiver edge routers, sends one or more PATH messages to one or more nodes downstream of the source edge router for the P2P LSPs, wherein each one of the set of PATH messages includes a same identifier of a point-to-multipoint (P2MP) LSP that includes a session object that contains a tunnel identifier and a P2MP identifier, and receives from each of those nodes downstream of the source edge router, a set of one or more RESV messages, wherein each one of the received RESV messages received from a respective node downstream of the source edge router includes the identifier of the P2MP LSP and a label allocated by that node downstream of the source edge router.Type: ApplicationFiled: December 9, 2013Publication date: April 10, 2014Applicant: ERICSSON ABInventors: Rahul Aggarwal, George Apostolopoulos, Liming Wei
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Patent number: 8605723Abstract: A method and apparatus for providing point-to-multipoint label switch paths (LSPs) in a Multi-Protocol Label Switching (MPLS) network is described. In one embodiment, a point-to-multipoint LSP is built in a MPLS network by using Resource Reservation Protocol Traffic Engineering (RSVP-TE) to signal the point-to-multipoint LSP as separate point-to-point LSPs and to merge the separate point-to-point LSPs into the point-to-multipoint LSP.Type: GrantFiled: November 28, 2011Date of Patent: December 10, 2013Assignee: Ericsson ABInventors: Rahul Aggarwal, George Apostolopoulos, Liming Wei
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Patent number: 8599849Abstract: A method and apparatus for providing point-to-multipoint label switch paths (LSPs) in a Multi-Protocol Label Switching (MPLS) network is described. In one embodiment, a point-to-multipoint LSP is built in a MPLS network by using Resource Reservation Protocol Traffic Engineering (RSVP-TE) to signal the point-to-multipoint LSP as separate point-to-point LSPs and to merge the separate point-to-point LSPs into the point-to-multipoint LSP.Type: GrantFiled: December 22, 2008Date of Patent: December 3, 2013Assignee: Ericsson ABInventors: Rahul Aggarwal, George Apostolopoulos, Liming Wei
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Publication number: 20120218898Abstract: In one embodiment, a method includes identifying a packet at an upstream node in communication with a source and in communication with a downstream node through equal cost multiple paths including first and second multi-access networks, the packet transmitted on the first multi-access network and associated with a multicast group, and transmitting from the upstream node a request to the downstream node to join the group on the second multi-access network, if the upstream node is already transmitting data to the group on the second multi-access network, or a bandwidth utilization at the first multi-access network exceeds a specified threshold. An apparatus is also disclosed.Type: ApplicationFiled: February 28, 2011Publication date: August 30, 2012Applicant: CISCO TECHNOLOGY, INC.Inventors: Yiqun Cai, Heidi Ou, Liming Wei, Apoorva Karan
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Publication number: 20120069844Abstract: A method and apparatus for providing point-to-multipoint label switch paths (LSPs) in a Multi-Protocol Label Switching (MPLS) network is described. In one embodiment, a point-to-multipoint LSP is built in a MPLS network by using Resource Reservation Protocol Traffic Engineering (RSVP-TE) to signal the point-to-multipoint LSP as separate point-to-point LSPs and to merge the separate point-to-point LSPs into the point-to-multipoint LSP.Type: ApplicationFiled: November 28, 2011Publication date: March 22, 2012Inventors: Rahul Aggarwal, George Apostolopoulos, Liming Wei
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Patent number: 7765300Abstract: Protocols for messaging between a centralized network management system and other entities are described. According to one embodiment, in response to a request of a subscriber for joining a multicast group received at a centralized aggregation server, the centralized aggregation server transmits a port subscriber announcement (PSA) message to substantially all subscriber access multiplexers over an access network. The PSA message includes an identifier (ID) of the subscriber. In response to the PSA message, a subscriber access multiplexer having a subscriber matching the ID of the subscriber in the PSA message identifies a user port corresponding to the subscriber and applies a local service policy to the identified user port.Type: GrantFiled: September 30, 2004Date of Patent: July 27, 2010Assignee: Ericsson ABInventors: Thomas J. Meehan, Naiming Shen, Liming Wei
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Patent number: 7761500Abstract: A method of signaling in a computer network uses interception by a network device of a message transmitted by a client computer to a server. The message contains a Universal Resource Locator (URL), the URL having a reserved port designation. The network device parses the URL and intercepts the message in response to finding the reserved port designation in the URL. The network device executes a command, where the command is carried in a field of the intercepted message. The client computer receives the URL having the reserved port designation in a HTML file transmitted to the client computer by the server. The message containing the URL is transmitted by the client computer in response to a user requesting a resource displayed in a web page displayed by the client computer.Type: GrantFiled: February 29, 2000Date of Patent: July 20, 2010Assignee: Cisco Technology, Inc.Inventors: Toerless Eckert, Liming Wei, Dino Farinacci