Patents by Inventor Chuan Xu
Chuan Xu 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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Publication number: 20240143651Abstract: The present disclosure relates to the field of image definition recognition, and discloses a logging image definition recognition method and device, medium and electronic equipment. The method comprises: establishing a logging image sample library comprising a plurality of logging images; acquiring actual definition information corresponding to the respective logging images; acquiring a plurality of definitions corresponding to the respective logging images; determining target weights corresponding to the respective target image definition determination algorithms according to the plurality of definitions and the actual definition information corresponding to the respective logging images; and determining a definition of a target logging image by the respective target image definition determination algorithms and the target weights corresponding to the respective target image definition determination algorithms.Type: ApplicationFiled: October 19, 2021Publication date: May 2, 2024Applicant: China Oilfield Services Ltd.Inventors: Lin Huang, Shusheng Guo, Zhenxue Hou, Chuan Fan, Danian Xu, Da Sheng, Wei Long, Guohua Zhang, Jiajie Cheng, Dong Li, Zhang Zhang, Lu Yin, Chaohua Zhang, Guibin Zhang
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Publication number: 20240131697Abstract: The present invention relates to a parallel robot system, including: a control apparatus; a parallel robot, including a mounting base, a moving platform, and a driving apparatus arranged between the mounting base and the moving platform, where the driving apparatus is configured to drive the moving platform to make multi-degree-of-freedom movement relative to the mounting base, and the driving apparatus receives a control signal from the control apparatus; a tracer, arranged on the moving platform; a passive arm, where the mounting base of the parallel robot is connected to one end of the passive arm; and an optical positioning and tracking apparatus, configured to track a spatial position of the tracer in real time and to send spatial position data of the tracer to the control apparatus.Type: ApplicationFiled: May 4, 2022Publication date: April 25, 2024Inventors: Gang ZHU, Wei TIAN, Kewen MU, Chuan BAI, Ke XU, Xiangrui ZHAO
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Publication number: 20240108579Abstract: Provided is a utidelone liposome composition. The liposome composition mainly contains utidelone, a phospholipid, and optional cholesterol. The liposome composition does not contain an excipient that is prone to causing an allergic reaction of a human body, has a high drug loading capacity and stability, and has a good industrialization potential. Further provided are a method for preparing the utidelone liposome composition and the use thereof.Type: ApplicationFiled: July 1, 2022Publication date: April 4, 2024Applicant: Chengdu Biostar Pharmaceuticals, LTD.Inventors: Li Tang, Chuan Zhang, Jing Xu, Cheng Zhang, Rongguo Qiu
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Publication number: 20240103031Abstract: A sample rack manipulation device (10), a testing system (1) and a testing method using the sample rack manipulation device (10), and a computer-readable medium implementing the testing method. The sample rack manipulation device (10) comprises: a loading/unloading zone (TA) in which a plurality of sample racks (50) carrying sample containers (51) containing samples can be arranged side by side; a sampling zone (TD, TE) in which samples in each sample container (51) on the sample racks (50) are sampled by an automatic testing apparatus; and a docking device (114) configured to transfer the sample racks (50) between the loading/unloading zone (TA) and the sampling zone (TD, TE). The docking device (114) is configured to be able to remove the sample racks (50) loaded in the loading/unloading zone (TA) in any order and to transfer the removed test sample racks (50) to the sampling zone (TD, TE) for sampling.Type: ApplicationFiled: January 28, 2021Publication date: March 28, 2024Inventors: Zhi JI, Chuan LIN, Cungang XU, Tetsuya YAMAMOTO, Weidong ZHU
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Publication number: 20240093410Abstract: A method for preparing an ultra-fine and uniform acrylamide-based polymer hydrogel filament. The method comprises: formulating a reaction solution of acrylamide-based polymer under ice bath conditions, and drawing the reaction solution into a reaction tube by a syringe; parabolically bending the two ends of the reaction tube upward; hanging the reaction tube for 2 h-8 h, and performing a baking reaction to obtain an acrylamide-based polymer hydrogel; vacuum drying the reaction tube for 4 h-8 h to obtain a dry filament of acrylamide-based polymer; cutting the reaction tube to obtain a plurality of short polymerization tubes having a preset length; pushing the dry filament of acrylamide-based polymer out of the short tube by a stainless steel wire; purifying same in a soaking solution to obtain an expanded filament of acrylamide-based polymer; and drying same to obtain a acrylamide-based polymer hydrogel filament having a preset external diameter.Type: ApplicationFiled: November 2, 2021Publication date: March 21, 2024Inventors: Yongsong Xu, Jian Wu, Hang Tang, Chuan Qin, Lei Mu, Fei Chen
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Patent number: 11811501Abstract: This application discloses a clock synchronization method and apparatus, and related storage medium, and pertains to the field of communications technologies. A network device receives an announce message from a first master clock node and an announce message from a second master clock node; and when an identifier of a first clock source node carried in the announce message of the first master clock node is the same as an identifier of a second clock source node carried in the announce message of the second master clock node, selects a master clock node with a smaller clock deviation from the first master clock node and the second master clock node, and then calibrates a clock of the network device based on time information of the master clock node. The precision of clock synchronization by the network device is improved.Type: GrantFiled: June 28, 2021Date of Patent: November 7, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Jingfei Lv, Song Liu, Chuan Xu
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Publication number: 20230139592Abstract: Provided are methods relating to SIRPgamma as a biomarker for cancer cells, and in particular of cancer stem cells and lung adenocarcinoma. Disclosed are also methods of treatment treatment, which involve administering a SIRPgamma targeted agent to a subject with cancer, alone or with another cancer therapy. Methods for diagnosing cancer, identifying subjects with high SIRPgamma levels for treatment, and monitoring SIRPgamma expressing tumors are also provided.Type: ApplicationFiled: December 19, 2017Publication date: May 4, 2023Inventors: Hui-Kuan Lin, Chuan Xu, Xiu-Wu Bian, Sarah Haigh Molina, Mark Furth
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Patent number: 11606155Abstract: A method for exchanging a clock synchronization packet performed by a network apparatus, including: exchanging a clock synchronization packet with a first clock source, where the network apparatus includes a boundary clock; determining a first time deviation of the boundary clock relative to the first clock source according to the clock synchronization packet exchanged with the first clock source, where the boundary clock avoids performing an operation of calibrating a time of a local clock of the boundary clock according to the first time deviation; and sending a clock synchronization packet to a first slave clock of the boundary clock, where the clock synchronization packet includes a first timestamp, a value of the first timestamp is equal to a first corrected value, and the first corrected value is a value obtained by the boundary clock by correcting the time of the local clock by using the first time deviation.Type: GrantFiled: July 13, 2021Date of Patent: March 14, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Jinhui Wang, Chuan Xu
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Publication number: 20220045837Abstract: In various embodiments, a method is provided. In this method, a first signal is received from a master node, and is sampled to obtain a first sample. The first sample is then quantized to obtain a quantized form of the first sample. A first synchronization sequence is detected from the quantized form of the first sample at T2. First information is received from the master node and the first information is used to indicate a moment T1 at which the master node sends the first synchronization sequence. A second synchronization sequence is sent to the master node at T3. Second information received from the master node and the second information is used to indicate a moment T4 at which the master node detects a quantized form of the second synchronization sequence. Time synchronization is performed based on T1, T2, T3, and T4.Type: ApplicationFiled: October 20, 2021Publication date: February 10, 2022Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Xingjian SHI, Jinhui WANG, Chuan XU
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Patent number: 11171769Abstract: In various embodiments, a method is provided. In this method, a first signal is received from a master node, and is sampled to obtain a first sample. The first sample is then quantized to obtain a quantized form of the first sample. A first synchronization sequence is detected from the quantized form of the first sample at T2. First information is received from the master node and the first information is used to indicate a moment T1 at which the master node sends the first synchronization sequence. A second synchronization sequence is sent to the master node at T3. Second information received from the master node and the second information is used to indicate a moment T4 at which the master node detects a quantized form of the second synchronization sequence. Time synchronization is performed based on T1, T2, T3, and T4.Type: GrantFiled: June 28, 2020Date of Patent: November 9, 2021Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Xingjian Shi, Jinhui Wang, Chuan Xu
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Publication number: 20210344435Abstract: A method for exchanging a clock synchronization packet performed by a network apparatus, including: exchanging a clock synchronization packet with a first clock source, where the network apparatus includes a boundary clock; determining a first time deviation of the boundary clock relative to the first clock source according to the clock synchronization packet exchanged with the first clock source, where the boundary clock avoids performing an operation of calibrating a time of a local clock of the boundary clock according to the first time deviation; and sending a clock synchronization packet to a first slave clock of the boundary clock, where the clock synchronization packet includes a first timestamp, a value of the first timestamp is equal to a first corrected value, and the first corrected value is a value obtained by the boundary clock by correcting the time of the local clock by using the first time deviation.Type: ApplicationFiled: July 13, 2021Publication date: November 4, 2021Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Jinhui WANG, Chuan XU
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Publication number: 20210328696Abstract: This application discloses a clock synchronization method and apparatus, and related storage medium, and pertains to the field of communications technologies. A network device receives an announce message from a first master clock node and an announce message from a second master clock node; and when an identifier of a first clock source node carried in the announce message of the first master clock node is the same as an identifier of a second clock source node carried in the announce message of the second master clock node, selects a master clock node with a smaller clock deviation from the first master clock node and the second master clock node, and then calibrates a clock of the network device based on time information of the master clock node. The precision of clock synchronization by the network device is improved.Type: ApplicationFiled: June 28, 2021Publication date: October 21, 2021Inventors: Jingfei LV, Song LIU, Chuan XU
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Publication number: 20210328698Abstract: This application discloses a clock synchronization method and apparatus, and a storage medium, which pertains to the field of communication technologies. The method includes: first receiving, by a network device, an announce packet from a first master clock node and an announce packet from a second master clock node, when an identifier of a first clock source node carried in the announce packet from the first master clock node is the same as an identifier of a second clock source node carried in the announce packet from the second master clock node, selecting a master clock node with a relatively small clock deviation, and then calibrating a clock of the network device based on time information of the master clock node. In this application, precision of clock synchronization performed by the network device is higher, and further, precision of a clock calibrated by the network device is higher.Type: ApplicationFiled: June 28, 2021Publication date: October 21, 2021Inventors: Jingfei LV, Song LIU, Chuan XU
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Patent number: 11095383Abstract: A method for exchanging a clock synchronization packet performed by a network apparatus, including: exchanging a clock synchronization packet with a first clock source, where the network apparatus includes a boundary clock; determining a first time deviation of the boundary clock relative to the first clock source according to the clock synchronization packet exchanged with the first clock source, where the boundary clock avoids performing an operation of calibrating a time of a local clock of the boundary clock according to the first time deviation; and sending a clock synchronization packet to a first slave clock of the boundary clock, where the clock synchronization packet includes a first timestamp, a value of the first timestamp is equal to a first corrected value, and the first corrected value is a value obtained by the boundary clock by correcting the time of the local clock by using the first time deviation.Type: GrantFiled: June 27, 2019Date of Patent: August 17, 2021Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Jinhui Wang, Chuan Xu
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Patent number: 11038608Abstract: A frequency synchronization method includes: receiving, by a slave clock, a first pulse signal and a second pulse signal; determining, by the slave clock based on a first phase difference, a second phase difference, a first delay, and a second delay, that a frequency offset of the slave clock relative to the master clock is equal to a first frequency offset, where the first phase difference is a difference between a phase of a third pulse signal generated by the slave clock and a phase of the first pulse signal received by the slave clock, and the second phase difference is a difference between a phase of a fourth pulse signal generated by the slave clock and a phase of the second pulse signal received by the slave clock; and calibrating, by the slave clock, frequency of the slave clock based on the first frequency offset.Type: GrantFiled: May 2, 2019Date of Patent: June 15, 2021Assignee: Huawei Technologies Co., Ltd.Inventors: Jingfei Lv, Jinhui Wang, Chuan Xu
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Publication number: 20200328872Abstract: In various embodiments, a method is provided. In this method, a first signal is received from a master node, and is sampled to obtain a first sample. The first sample is then quantized to obtain a quantized form of the first sample. A first synchronization sequence is detected from the quantized form of the first sample at T2. First information is received from the master node and the first information is used to indicate a moment T1 at which the master node sends the first synchronization sequence. A second synchronization sequence is sent to the master node at T3. Second information received from the master node and the second information is used to indicate a moment T4 at which the master node detects a quantized form of the second synchronization sequence. Time synchronization is performed based on T1, T2, T3, and T4.Type: ApplicationFiled: June 28, 2020Publication date: October 15, 2020Inventors: Xingjian Shi, Jinhui Wang, Chuan Xu
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Publication number: 20190327010Abstract: A method for exchanging a clock synchronization packet performed by a network apparatus, including: exchanging a clock synchronization packet with a first clock source, where the network apparatus includes a boundary clock; determining a first time deviation of the boundary clock relative to the first clock source according to the clock synchronization packet exchanged with the first clock source, where the boundary clock avoids performing an operation of calibrating a time of a local clock of the boundary clock according to the first time deviation; and sending a clock synchronization packet to a first slave clock of the boundary clock, where the clock synchronization packet includes a first timestamp, a value of the first timestamp is equal to a first corrected value, and the first corrected value is a value obtained by the boundary clock by correcting the time of the local clock by using the first time deviation.Type: ApplicationFiled: June 27, 2019Publication date: October 24, 2019Inventors: Jinhui WANG, Chuan XU
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Patent number: 10412697Abstract: A time synchronization method and system, and a network device, where the method includes receiving, by a second network device, a first packet from a first network device, where the first packet includes a first service frame and a first time stamp (T1), the first service frame carries a system clock of a radio equipment control (REC), obtaining, the system clock of the REC according to the first packet, sending, according to the system clock of the REC, the first service frame extracted from the first packet to a radio equipment (RE), recording a second time stamp (T2) at which the first service frame is sent, and determining, by the second network device, a transmission delay (T) according to T=T2?T1. Hence, a delay between the REC and the RE remains unchanged.Type: GrantFiled: October 26, 2017Date of Patent: September 10, 2019Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Cong Chen, Chuan Xu
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Publication number: 20190260490Abstract: A frequency synchronization method includes: receiving, by a slave clock, a first pulse signal and a second pulse signal; determining, by the slave clock based on a first phase difference, a second phase difference, a first delay, and a second delay, that a frequency offset of the slave clock relative to the master clock is equal to a first frequency offset, where the first phase difference is a difference between a phase of a third pulse signal generated by the slave clock and a phase of the first pulse signal received by the slave clock, and the second phase difference is a difference between a phase of a fourth pulse signal generated by the slave clock and a phase of the second pulse signal received by the slave clock; and calibrating, by the slave clock, frequency of the slave clock based on the first frequency offset.Type: ApplicationFiled: May 2, 2019Publication date: August 22, 2019Inventors: Jingfei Lv, Jinhui Wang, Chuan Xu
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Patent number: 10291446Abstract: A clock synchronization method, a receiver, a transmitter, and a clock synchronization system, where the method includes obtaining a common reference clock signal, determining Bt according to the common reference clock signal and Mrd(t?1), where B t = mod ? [ ? n = 0 t - 1 ? ? Mr d ? ( n ) , 2 p ] , determining that Mrd(t?1) is a target Mrd when Ct obtained by means of calculation according to Mrd(t?1) is less than or equal to a threshold, where Ct=Bt?At, At is included in a residual time stamp (RTS) packet received by a receiver last time from the transmitter, and A t = mod ? [ ? n = 0 t ? ? M d ? ( n ) , 2 p ] , performing frequency division on the common reference clock signal using the target Mrd as a frequency dividing coefficient to obtain a first clock signal, and performing frequency multiplication processing on the first clock signal to obtain a service clock signal. Hence, random phase offset may be avoided.Type: GrantFiled: April 27, 2018Date of Patent: May 14, 2019Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Chuan Xu, Cong Chen