Patents by Inventor Zinan Wang
Zinan Wang 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: 20240106585Abstract: A wireless station (STA) for parameterized spatial reuse (PSR) operation. The STA may receive, from a first access point (AP) that the STA is not associated with, a trigger frame. The trigger frame includes a signal (SIG) field that includes a PSR field. The PSR field includes a plurality of subfields each corresponding to a respective subchannel associated with the trigger frame. This information includes transmission power level information. The STA may then determine, for each subchannel, using the transmission power level information, transmission power upper bounds for each of the subchannels.Type: ApplicationFiled: November 24, 2021Publication date: March 28, 2024Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Hanqing Lou, Zinan Lin, Xiaofei Wang, Rui Yang, Li Hsiang Sun
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Publication number: 20240027369Abstract: A radiographic inspection device is provided, including: a plurality of inspection channels, a scanning apparatus, a driving apparatus and a controller. The plurality of inspection channels are arranged side by side, and each inspection channel is configured to carry an object to be inspected. The scanning apparatus includes a radiation source mounted outside the plurality of inspection channels, and a receiving apparatus mounted outside the plurality of inspection channels and configured to receive a radiation beam emitted from the radiation source. The driving apparatus is configured to drive the radiation source and the receiving apparatus to move to a vicinity of each inspection channel. The controller is configured to control the scanning apparatus moved to the vicinity of one of the plurality of inspection channels to scan the object in the one of the plurality of inspection channels.Type: ApplicationFiled: September 17, 2021Publication date: January 25, 2024Inventors: Li ZHANG, Qingping HUANG, Mingzhi HONG, Zinan WANG
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Publication number: 20230301604Abstract: Disclosed is a support frame (1) of a CT imaging system, including: a connection flat plate portion (10); a support body portion (20) disposed on the connection flat plate portion (10); an X-ray source installation reference portion (30) disposed on the connection flat plate portion (10); an electrical installation portion (40); a cooling component installation portion (50); and a through hole (60), wherein the through hole is surrounded by the support body portion (20), the X-ray source installation reference portion (30), the electrical installation portion (40) and the cooling component installation portion (50), and the through hole penetrates the connection body portion (10). The connection flat plate portion (10), the support body portion (20), the X-ray source installation reference portion (30), the electrical installation portion (40) and the cooling component installation portion (50) are integrally formed.Type: ApplicationFiled: September 27, 2021Publication date: September 28, 2023Inventors: Li ZHANG, Zhiqiang CHEN, Mingzhi HONG, Qingping HUANG, Zinan WANG, Jinning LIANG, Hongbin HOU
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Patent number: 11144991Abstract: A cognitive assessment system enabling an object under test to complete self-cognitive assessment required for the financial risk control services in the network platform environment. The invention provides an environment platform for the object under test to obtain the self-cognitive results required for the risk control services, so as to judge the credit attitude and capability of the object under test, avoid the financial credit risks, and thoroughly solve the defect that the attitude of the object under test cannot be measured through the traditional risk control assessment. In view of the risk control in credit business, the invention solves the risk problems of actual credit capacity and credit attitude of natural persons or enterprises and public institutions, avoids the errors caused by a questionnaire method in traditional operations, improves and enriches the risk control content in the financial industry.Type: GrantFiled: May 20, 2019Date of Patent: October 12, 2021Inventor: Zinan Wang
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Publication number: 20200320618Abstract: A cognitive assessment system enabling an object under test to complete self-cognitive assessment required for the financial risk control services in the network platform environment. The invention provides an environment platform for the object under test to obtain the self-cognitive results required for the risk control services, so as to judge the credit attitude and capability of the object under test, avoid the financial credit risks, and thoroughly solve the defect that the attitude of the object under test cannot be measured through the traditional risk control assessment. In view of the risk control in credit business, the invention solves the risk problems of actual credit capacity and credit attitude of natural persons or enterprises and public institutions, avoids the errors caused by a questionnaire method in traditional operations, improves and enriches the risk control content in the financial industry.Type: ApplicationFiled: May 20, 2019Publication date: October 8, 2020Inventor: Zinan Wang
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Patent number: 10644475Abstract: A random distributed Rayleigh feedback fiber laser based on a double-cladding weakly ytterbium-doped fiber includes: a pump laser source, a pump combiner, a cladding power stripper, and a double-cladding weakly ytterbium-doped fiber for simultaneously achieving distributed active gain and random distributed Rayleigh feedback. An output end of the pump combiner is connected with one end of the double-cladding weakly ytterbium-doped fiber, the other end of the double-cladding weakly ytterbium-doped fiber is connected with an input end of the cladding power stripper, and a concentration of ytterbium ions in the double-cladding weakly ytterbium-doped fiber is in a range of 0.5×1023 to 1×1025/m3. The laser provided by the present invention solves the problem that the existing random fiber lasers cannot simultaneously utilize distributed active gain and random distributed Rayleigh feedback with a single type of fiber.Type: GrantFiled: August 24, 2018Date of Patent: May 5, 2020Assignee: University of Electronic Science and Technology of ChinaInventors: Zinan Wang, Jiaqi Li, Han Wu, Yunjiang Rao
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Patent number: 10564012Abstract: A method of improving measurement speed of distributed optical fiber sensors by adopting orthogonal signals and the system thereof is disclosed, which is related to the optical fiber sensor field and solves the problems that conventional technology will increasing the bandwidth of the received signal, reducing the signal-to-noise ratio of the received signal or distortion the spatial resolution of the system. The method comprises steps of generating N periodic orthogonal optical pulse sequence; injecting the N periodic orthogonal optical pulse sequence into the optical fiber under test(5); collecting the scattered light signal; demodulating the scattered light signal with the local oscillating light and then converting into digital signals; extracting the scatter information of the orthogonal optical pulses from the collected digital signals; and arranging the scattered information in order of precedence of the infusion. The measurement speed of the distributed optical fiber sensors is improved by N?1 times.Type: GrantFiled: January 18, 2018Date of Patent: February 18, 2020Assignee: University of Electronic Science and Technology of ChinaInventors: Zinan Wang, Ji Xiong, Lianlian Xie, Yunjiang Rao
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Patent number: 10491298Abstract: A hybrid distributed amplification method based on a random fiber laser generated within erbium fiber with low doping concentration, i.e. weak erbium-doped fiber (WEDF), which includes: Step 1. constructing a fiber link via WEDF; Step 2. generating the random fiber laser based on the fiber link, the pump source, the wavelength division multiplexer and the strong feedback module; Step 3. constructing the spatial equalized gain based on hybrid gain of the erbium fiber and random fiber laser; Step 4. the signal is amplified by the hybrid spatial equalized gain. The present invention solves the typical problem of high laser threshold and low pump conversion efficiency when conventional fiber is used to generate random fiber laser for distributed amplification.Type: GrantFiled: October 20, 2018Date of Patent: November 26, 2019Assignee: University of Electronic Science and Technology of ChinaInventors: Yunjiang Rao, Yun Fu, Jiaqi Li, Zinan Wang
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Publication number: 20190058524Abstract: A hybrid distributed amplification method based on a random fiber laser generated within erbium fiber with low doping concentration, i.e. weak erbium-doped fiber (WEDF), which includes: Step 1. constructing a fiber link via WEDF; Step 2. generating the random fiber laser based on the fiber link, the pump source, the wavelength division multiplexer and the strong feedback module; Step 3. constructing the spatial equalized gain based on hybrid gain of the erbium fiber and random fiber laser; Step 4. the signal is amplified by the hybrid spatial equalized gain. The present invention solves the typical problem of high laser threshold and low pump conversion efficiency when conventional fiber is used to generate random fiber laser for distributed amplification.Type: ApplicationFiled: October 20, 2018Publication date: February 21, 2019Inventors: Yunjiang Rao, Yun Fu, Jiaqi Li, Zinan Wang
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Publication number: 20180366897Abstract: A random distributed Rayleigh feedback fiber laser based on a double-cladding weakly ytterbium-doped fiber includes: a pump laser source, a pump combiner, a cladding power stripper, and a double-cladding weakly ytterbium-doped fiber for simultaneously achieving distributed active gain and random distributed Rayleigh feedback. An output end of the pump combiner is connected with one end of the double-cladding weakly ytterbium-doped fiber, the other end of the double-cladding weakly ytterbium-doped fiber is connected with an input end of the cladding power stripper, and a concentration of ytterbium ions in the double-cladding weakly ytterbium-doped fiber is in a range of 0.5×1023 to 1×1027/m3. The laser provided by the present invention solves the problem that the existing random fiber lasers cannot simultaneously utilize distributed active gain and random distributed Rayleigh feedback with a single type of fiber.Type: ApplicationFiled: August 24, 2018Publication date: December 20, 2018Inventors: Zinan Wang, Jiaqi Li, Han Wu, Yunjiang Rao
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Publication number: 20180156642Abstract: A method of improving measurement speed of distributed optical fiber sensors by adopting orthogonal signals and the system thereof is disclosed, which is related to the optical fiber sensor field and solves the problems that conventional technology will increasing the bandwidth of the received signal, reducing the signal-to-noise ratio of the received signal or distortion the spatial resolution of the system. The method comprises steps of generating N periodic orthogonal optical pulse sequence; injecting the N periodic orthogonal optical pulse sequence into the optical fiber under test(5); collecting the scattered light signal; demodulating the scattered light signal with the local oscillating light and then converting into digital signals; extracting the scatter information of the orthogonal optical pulses from the collected digital signals; and arranging the scattered information in order of precedence of the infusion. The measurement speed of the distributed optical fiber sensors is improved by N?1 times.Type: ApplicationFiled: January 18, 2018Publication date: June 7, 2018Inventors: Zinan Wang, Ji Xiong, Lianlian Xie, Yunjiang Rao
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Patent number: 9841349Abstract: A method for distributedly measuring polarization transmission matrices of an optical fiber includes steps of: inputting a fully polarized pulse into the optical fiber with linear birefringence only; and demodulating polarization states of Rayleigh backscattered light at different points on the optical fiber from a pulse input end; after demodulating, dividing the polarization states of the Rayleigh backscattered light into Q groups in sequence, wherein every three polarization states are divided into one group; calculating a transmission matrix of Group N; and solving the equation set using a numerical analysis method for obtaining multiple solutions, and screening the multiple solutions according to characteristics of the polarization transmission matrix, wherein each time of screening provides a unique solution Mx(N) of the equation set; continually updating MA values for iteration, so as to obtain the distribution of polarization transmission matrices of the optical fiber.Type: GrantFiled: December 18, 2016Date of Patent: December 12, 2017Assignee: University of Electronic Science and Technology of ChinaInventors: Zinan Wang, Yun Fu, Yunjiang Rao
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Publication number: 20170097281Abstract: A method for distributedly measuring polarization transmission matrices of an optical fiber includes steps of: inputting a fully polarized pulse into the optical fiber with linear birefringence only; and demodulating polarization states of Rayleigh backscattered light at different points on the optical fiber from a pulse input end; after demodulating, dividing the polarization states of the Rayleigh backscattered light into Q groups in sequence, wherein every three polarization states are divided into one group; calculating a transmission matrix of Group N; and solving the equation set using a numerical analysis method for obtaining multiple solutions, and screening the multiple solutions according to characteristics of the polarization transmission matrix, wherein each time of screening provides a unique solution Mx(N) of the equation set; continually updating MA values for iteration, so as to obtain the distribution of polarization transmission matrices of the optical fiber.Type: ApplicationFiled: December 18, 2016Publication date: April 6, 2017Inventors: Zinan Wang, Yun Fu, Yunjiang Rao
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Patent number: 9163960Abstract: A long-distance polarization and phase-sensitive reflectometry based on random laser amplification for extending a sensing distance includes a long-distance polarization and phase-sensitive reflectometry of a distributed Raman amplification based on optical fiber random lasers generated by unilateral pumps, a long-distance polarization and phase-sensitive reflectometry of a distributed Raman amplification based on optical fiber random lasers generated by bilateral pumps, and a long-distance polarization and phase-sensitive reflectometry of a Raman amplification based on a combination of optical fiber random lasers generated by unilateral pumps and a common Raman pump source, which are applied in optical fiber perturbation sensing and have a capability of greatly improving a working distance of a sensing system and a high practicability.Type: GrantFiled: March 9, 2014Date of Patent: October 20, 2015Assignee: University of Electronic Science and Technology of ChinaInventors: Yunjiang Rao, Zinan Wang, Zengling Ran
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Publication number: 20140183360Abstract: A long-distance polarization and phase-sensitive reflectometry based on random laser amplification for extending a sensing distance includes a long-distance polarization and phase-sensitive reflectometry of a distributed Raman amplification based on optical fiber random lasers generated by unilateral pumps, a long-distance polarization and phase-sensitive reflectometry of a distributed Raman amplification based on optical fiber random lasers generated by bilateral pumps, and a long-distance polarization and phase-sensitive reflectometry of a Raman amplification based on a combination of optical fiber random lasers generated by unilateral pumps and a common Raman pump source, which are applied in optical fiber perturbation sensing and have a capability of greatly improving a working distance of a sensing system and a high practicability.Type: ApplicationFiled: March 9, 2014Publication date: July 3, 2014Applicant: University of Electronic Science and Technology of ChinaInventors: Yunjiang Rao, Zinan Wang, Zengling Ran
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Publication number: 20100150555Abstract: Method and apparatus are provided for polarization demultiplexing for a Polarization Division Multiplexed (PDM) signal stream in the optical domain. The optical PDM signal stream includes a first channel representing a first data stream and a second channel representing a second data stream, a time delay between the first channel and the second channel. A Polarization Beam Splitter (PBS) demultiplexes an optical PDM signal into the first channel and the second channel. An associated processing block obtains one of the channels and provides a Polarization Controller with for a control signal corresponding to the power level of the low frequency portion of the RF spectrum of the channel obtained. Based on the control signal, the Polarization Controller adjusts a state of polarization of the optical PDM signal stream that is provided to the PBS for demultiplexing.Type: ApplicationFiled: December 12, 2008Publication date: June 17, 2010Inventors: Zinan Wang, Chongjin Xie