Patents by Inventor Wenjia Wang
Wenjia 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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Patent number: 11914179Abstract: This disclosure discloses a radiative cooling optical filter, comprising a substrate. One side of the substrate is polished, and the rough side of the substrate is provided with a metal reflective layer. The polished side of the substrate is subsequently provided with the intermediate layers and a top layer. The intermediate layer comprises alternatingly arranged layers A and layers B. The thickness of each layer A and layer B is 50-400 nm. The material of the layer A is silicon dioxide or aluminum oxide, and the material of the layer B is titanium dioxide, silicon nitride or silicon carbide. The material of the top layer is ytterbium fluoride, yttrium fluoride or zinc sulfide. The intermediate layer and the top layer jointly constitute a multi-resonant absorption enhancer in the atmospheric transparent window.Type: GrantFiled: January 18, 2019Date of Patent: February 27, 2024Assignee: ZHEJIANG UNIVERSITYInventors: Weidong Shen, Huaxin Yuan, Chenying Yang, Xiaowen Zheng, Wen Mu, Zhen Wang, Wenjia Yuan, Yueguang Zhang
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Patent number: 11825249Abstract: A method includes determining a first power level by performing a first series of measurements based on a first series of burst transmissions from an optical transmitter of an optical network unit (ONU) in an optical network. Bursts in the first series of burst transmissions include a first modified preamble. A second power level is determined by performing a second series of measurements based on a second series of optical burst transmissions. Bursts in the second series of burst transmissions include a second modified preamble. A first power level (P0) and a second power level (P1) are determined based on the first power level and the second power level and one or more additional parameters associated with transmissions from the optical transmitter are determined based on P0 and P1. Based on the additional parameters, it is determined whether the optical transmitter complies with specifications of the optical network.Type: GrantFiled: November 10, 2022Date of Patent: November 21, 2023Assignee: Verizon Patent and Licensing Inc.Inventors: Denis A. Khotimsky, Wenjia Wang
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Publication number: 20230252645Abstract: Embodiments of the present application provide a vascular plaque extraction apparatus and method. The method includes: acquiring a computed tomography angiography (CTA) image; performing preprocessing on the CTA image; performing a vascular lumen segmentation on the preprocessed CTA image to obtain a vascular lumen image; performing a dilation operation on the vascular lumen image to obtain a dilated region of interest (ROI), and performing a voxel-based radiomics feature extraction on the dilated ROI to obtain at least one voxel feature map; and extracting vascular plaques based on a preset threshold corresponding to the at least one voxel feature map and the at least one voxel feature map. According to the embodiments of the present application, the vascular plaques can be quickly and accurately extracted from the CTA image, providing a reference for an accurate quantitative analysis and auxiliary diagnosis and treatment.Type: ApplicationFiled: January 27, 2023Publication date: August 10, 2023Inventors: Wenjia Wang, Yingbin Nie, Chen Zhang, Yige Li
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Publication number: 20230062679Abstract: A method includes determining a first power level by performing a first series of measurements based on a first series of burst transmissions from an optical transmitter of an optical network unit (ONU) in an optical network. Bursts in the first series of burst transmissions include a first modified preamble. A second power level is determined by performing a second series of measurements based on a second series of optical burst transmissions. Bursts in the second series of burst transmissions include a second modified preamble. A first power level (Po) and a second power level (P1) are determined based on the first power level and the second power level and one or more additional parameters associated with transmissions from the optical transmitter are determined based on P0 and P1. Based on the additional parameters, it is determined whether the optical transmitter complies with specifications of the optical network.Type: ApplicationFiled: November 10, 2022Publication date: March 2, 2023Inventors: Denis A. Khotimsky, Wenjia Wang
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Patent number: 11523194Abstract: A method includes determining a first power level by performing a first series of measurements based on a first series of burst transmissions from an optical transmitter of an optical network unit (ONU) in an optical network. Bursts in the first series of burst transmissions include a first modified preamble. A second power level is determined by performing a second series of measurements based on a second series of optical burst transmissions. Bursts in the second series of burst transmissions include a second modified preamble. A first power level (P0) and a second power level (P1) are determined based on the first power level and the second power level and one or more additional parameters associated with transmissions from the optical transmitter are determined based on P0 and P1. Based on the additional parameters, it is determined whether the optical transmitter complies with specifications of the optical network.Type: GrantFiled: October 26, 2021Date of Patent: December 6, 2022Assignee: Verizon Patent and Licensing Inc.Inventors: Denis A. Khotimsky, Wenjia Wang
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Publication number: 20220046342Abstract: A method includes determining a first power level by performing a first series of measurements based on a first series of burst transmissions from an optical transmitter of an optical network unit (ONU) in an optical network. Bursts in the first series of burst transmissions include a first modified preamble. A second power level is determined by performing a second series of measurements based on a second series of optical burst transmissions. Bursts in the second series of burst transmissions include a second modified preamble. A first power level (P0) and a second power level (P1) are determined based on the first power level and the second power level and one or more additional parameters associated with transmissions from the optical transmitter are determined based on P0 and P1. Based on the additional parameters, it is determined whether the optical transmitter complies with specifications of the optical network.Type: ApplicationFiled: October 26, 2021Publication date: February 10, 2022Inventors: Denis A. Khotimsky, Wenjia Wang
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Patent number: 11184692Abstract: A method includes determining a first power level by performing a first series of measurements based on a first series of burst transmissions from an optical transmitter of an optical network unit (ONU) in an optical network. Bursts in the first series of burst transmissions include a first modified preamble. A second power level is determined by performing a second series of measurements based on a second series of optical burst transmissions. Bursts in the second series of burst transmissions include a second modified preamble. A first power level (P0) and a second power level (P1) are determined based on the first power level and the second power level and one or more additional parameters associated with transmissions from the optical transmitter are determined based on P0 and P1. Based on the additional parameters, it is determined whether the optical transmitter complies with specifications of the optical network.Type: GrantFiled: March 13, 2020Date of Patent: November 23, 2021Assignee: Verizon Patent and Licensing Inc.Inventors: Denis A. Khotimsky, Wenjia Wang
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Publication number: 20210289274Abstract: A method includes determining a first power level by performing a first series of measurements based on a first series of burst transmissions from an optical transmitter of an optical network unit (ONU) in an optical network. Bursts in the first series of burst transmissions include a first modified preamble. A second power level is determined by performing a second series of measurements based on a second series of optical burst transmissions. Bursts in the second series of burst transmissions include a second modified preamble. A first power level (P0) and a second power level (P1) are determined based on the first power level and the second power level and one or more additional parameters associated with transmissions from the optical transmitter are determined based on P0 and P1. Based on the additional parameters, it is determined whether the optical transmitter complies with specifications of the optical network.Type: ApplicationFiled: March 13, 2020Publication date: September 16, 2021Inventors: Denis A. Khotimsky, Wenjia Wang
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Publication number: 20200320697Abstract: A method includes: determining a first neural network model; inputting an image to be processed containing a lung image to the first neural network model to obtain a lung lobe segmentation result of the image to be processed; wherein the first network layer in the first neural network model is configured to add an additional channel with coordinate information to input data input to the first network layer, and to determine output data of the first network layer based on the input data after the additional channel is added thereto.Type: ApplicationFiled: April 3, 2020Publication date: October 8, 2020Inventors: Wenjia Wang, Junxuan Chen, Ying Chi, Xuansong Xie, Xiansheng Hua
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Patent number: 9877091Abstract: A system includes an optical fiber cross-connect module with upstream ports and downstream ports, a first set of optical fibers connected from optical line terminals to the upstream ports, and a second set of optical fibers connected to the downstream ports and a customer optical network unit. The optical line terminals provide multiple wavelengths carrying optical signals at different bitrates over the first set of optical fibers. The customer optical network unit includes a tunable filter configured to receive any one of the multiple wavelengths. The optical fiber cross-connect module divides the optical signals received at each of the upstream ports into each of the downstream ports, and the customer optical network unit may be tuned to pass through a particular wavelength from the multiple wavelengths.Type: GrantFiled: December 4, 2015Date of Patent: January 23, 2018Assignee: Verizon Patent and Licensing Inc.Inventors: David Z. Chen, Wenjia Wang
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Publication number: 20170164076Abstract: A system includes an optical fiber cross-connect module with upstream ports and downstream ports, a first set of optical fibers connected from optical line terminals to the upstream ports, and a second set of optical fibers connected to the downstream ports and a customer optical network unit. The optical line terminals provide multiple wavelengths carrying optical signals at different bitrates over the first set of optical fibers. The customer optical network unit includes a tunable filter configured to receive any one of the multiple wavelengths. The optical fiber cross-connect module divides the optical signals received at each of the upstream ports into each of the downstream ports, and the customer optical network unit may be tuned to pass through a particular wavelength from the multiple wavelengths.Type: ApplicationFiled: December 4, 2015Publication date: June 8, 2017Inventors: David Z. Chen, Wenjia Wang
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Patent number: 9547130Abstract: An attenuator device includes a housing that forms a channel configured to receive an optical fiber. The optical fiber includes a first fused fiber tap for a first signal direction and a second fused fiber tap for a second signal direction. The attenuator device also includes (a) a first bend control region, in series with the channel and aligned with the first fused fiber tap; (b) a first bend-inducing object that moves to selectively contact the first fused fiber tap in the first bend control region to alter a bend radius at the first fused fiber tap; (c) a second bend control region, in series with the channel and aligned with the second fused fiber tap; and (d) a second bend-inducing object that moves to selectively contact the second fused fiber tap in the second bend control region to alter a bend radius at the second fused fiber tap.Type: GrantFiled: November 13, 2015Date of Patent: January 17, 2017Assignee: Verizon Patent and Licensing Inc.Inventors: David Z. Chen, Wenjia Wang
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Patent number: 9435712Abstract: A system includes an Optical Time Domain Reflectometer (OTDR) that injects a first OTDR signal at a first optical wavelength, a first power level and a first polarization state into an optical fiber. The system further includes an OTDR monitor that monitors multi-band optical signals on the optical fiber, selects a second power level and a second polarization state based on the monitoring of the multi-band optical signals, and determines parameters associated with the optical fiber based on the monitoring. The OTDR injects a second OTDR signal at the first optical wavelength, the selected second power level and the selected second polarization state into the optical fiber. The system operates to allow un-balanced power levels across multiple wavelength bands to be balanced due to inter-channel Raman power shift.Type: GrantFiled: December 29, 2014Date of Patent: September 6, 2016Assignee: Verizon Patent and Licensing Inc.Inventors: David Z. Chen, Wenjia Wang
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Publication number: 20160187224Abstract: A system includes an Optical Time Domain Reflectometer (OTDR) that injects a first OTDR signal at a first optical wavelength, a first power level and a first polarization state into an optical fiber. The system further includes an OTDR monitor that monitors multi-band optical signals on the optical fiber, selects a second power level and a second polarization state based on the monitoring of the multi-band optical signals, and determines parameters associated with the optical fiber based on the monitoring. The OTDR injects a second OTDR signal at the first optical wavelength, the selected second power level and the selected second polarization state into the optical fiber. The system operates to allow un-balanced power levels across multiple wavelength bands to be balanced due to inter-channel Raman power shift.Type: ApplicationFiled: December 29, 2014Publication date: June 30, 2016Inventors: David Z. Chen, Wenjia Wang