Patents by Inventor Honghui Xu
Honghui 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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Patent number: 11938984Abstract: The present invention relates to a multi-layer coupling relationship-based train operation deviation propagation condition recognition method, where the method includes the following steps: (1) recognizing an effective train event time sequence, including an arrival event and a departure event of a train at each passing station; (2) uniformly extracting train activity data, including a stop activity, a section operation activity, a turn-back activity, and an arrival or departure interval activity; (3) constructing coupling relationship groups between a train event and a train activity and between train activities; and (4) performing statistics on changes of train operation deviation in each relationship group, and outputting a respective distribution function and a time-space distribution visualized result. Compared with the prior art, the present invention has the advantages of being practical, automatic recognition, feedback optimization, and the like.Type: GrantFiled: October 19, 2020Date of Patent: March 26, 2024Assignee: CASCO SIGNAL LTD.Inventors: Fengbo Liu, Jing Xu, Honghui Yan, Jiang Qian, Tingliang Zhou
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Publication number: 20240076627Abstract: A WAYNE293 LVPRO cell adapted to a serum-free medium environment, and applications thereof are provided. The human embryonic kidney cell WAYNE 293 is preserved in China General Microbiological Culture Collection Center (CGMCC) on May 24, 2021, the address is Institute of Microbiology, Chinese Academy of Sciences, No. 3, No. 1 Yard, Beichen West Road, Chaoyang District, Beijing, the postal code is 100101, and the preservation number is CGMCC No. 22348. The human embryonic kidney cell WAYNE 293 may be derived from suspension culture of HEK293 cells in a serum-free medium free of an anti-agglomeration agent, has the characteristics of short doubling time, high growth density, high virus packaging efficiency, and is an important support for industrial development in the field of cell and gene therapy.Type: ApplicationFiled: November 10, 2023Publication date: March 7, 2024Applicant: QUACELL BIOTECHNOLOGY, CO. LTD.Inventors: Xiaoyu YU, Honghui PAN, Jun YUAN, Wenyan XU, Guohao XIE, Fan WU
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Publication number: 20230327707Abstract: Described are systems, methods, apparatuses, and computer program products for wireless in-ear-monitoring (IEM) of audio. A system includes transmitter(s) configured to map orthogonal sub-carriers of a digital signal to narrowband receivers to form receiver-allocated audio channels, modulate the digital signal, and transmit the signal as an ultra-high frequency (UHF) analog carrier wave comprising the orthogonal sub-carriers to the nearby receiver. A narrowband receiver is configured to demodulate and sample the sub-carriers allocated to the receiver. Sub-carriers can be positioned orthogonal to one another in adjacent sub-bands of the frequency domain and beacon symbols and pilot signals can be iteratively provided in the same portion of the frequency domain for each channel. The receiver can use non-data-aided and data-aided approaches for synchronization of the time domain and frequency domain waveforms of the received signal to the transmitted signal prior to sampling the allocated sub-carriers.Type: ApplicationFiled: June 15, 2023Publication date: October 12, 2023Inventors: Robert MAMOLA, Bryan W. Zancho, Jiang Chang, Honghui Xu, Michael Joseph Goodson
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Publication number: 20230006712Abstract: Described are systems, methods, apparatuses, and computer program products for wireless in-ear-monitoring (IEM) of audio. A system includes transmitter(s) configured to map orthogonal sub-carriers of a digital signal to narrowband receivers to form receiver-allocated audio channels, modulate the digital signal, and transmit the signal as an ultra-high frequency (UHF) analog carrier wave comprising the orthogonal sub-carriers to the nearby receiver. A narrowband receiver is configured to demodulate and sample the sub-carriers allocated to the receiver. Sub-carriers can be positioned orthogonal to one another in adjacent sub-bands of the frequency domain and beacon symbols and pilot signals can be iteratively provided in the same portion of the frequency domain for each channel. The receiver can use non-data-aided and data-aided approaches for synchronization of the time domain and frequency domain waveforms of the received signal to the transmitted signal prior to sampling the allocated sub-carriers.Type: ApplicationFiled: June 30, 2022Publication date: January 5, 2023Applicant: SHURE ACQUISITION HOLDINGS, INC.Inventors: Robert MAMOLA, Bryan W, Zancho, Jiang Chang, Honghui Xu, Michael Joseph Goodson
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Patent number: 11343066Abstract: A method for synchronizing baseband clocks in an OFDMA wireless microphone system is disclosed. An example method includes receiving a plurality of pilot subcarriers from an audio transmitter. The method also includes determining a timing offset estimate based on the pilot subcarriers. The method further includes determining a tuning value by passing the timing offset estimate through a proportional-integral controller. The method still further includes determining a modified reference signal by modifying a reference oscillator based on the tuning value. And the method yet further includes controlling (i) an audio sample clock and (ii) an antenna data clock based on the modified reference signal.Type: GrantFiled: March 8, 2021Date of Patent: May 24, 2022Assignee: Shure Acquisition Holdings, Inc.Inventors: Michael Rodriguez, Honghui Xu
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Publication number: 20220029776Abstract: A method for synchronizing baseband clocks in an OFDMA wireless microphone system is disclosed. An example method includes receiving a plurality of pilot subcarriers from an audio transmitter. The method also includes determining a timing offset estimate based on the pilot subcarriers. The method further includes determining a tuning value by passing the timing offset estimate through a proportional-integral controller. The method still further includes determining a modified reference signal by modifying a reference oscillator based on the tuning value. And the method yet further includes controlling (i) an audio sample clock and (ii) an antenna data clock based on the modified reference signal.Type: ApplicationFiled: March 8, 2021Publication date: January 27, 2022Inventors: Michael Rodriguez, Honghui Xu
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Patent number: 10944535Abstract: A method for synchronizing baseband clocks in an OFDMA wireless microphone system is disclosed. An example method includes receiving a plurality of pilot subcarriers from an audio transmitter. The method also includes determining a timing offset estimate based on the pilot subcarriers. The method further includes determining a tuning value by passing the timing offset estimate through a proportional-integral controller. The method still further includes determining a modified reference signal by modifying a reference oscillator based on the tuning value. And the method yet further includes controlling (i) an audio sample clock and (ii) an antenna data clock based on the modified reference signal.Type: GrantFiled: May 29, 2019Date of Patent: March 9, 2021Assignee: Shure Acquisition Holdings, Inc.Inventors: Michael Rodriguez, Honghui Xu
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Publication number: 20200382268Abstract: A method for synchronizing baseband clocks in an OFDMA wireless microphone system is disclosed. An example method includes receiving a plurality of pilot subcarriers from an audio transmitter. The method also includes determining a timing offset estimate based on the pilot subcarriers. The method further includes determining a tuning value by passing the timing offset estimate through a proportional-integral controller. The method still further includes determining a modified reference signal by modifying a reference oscillator based on the tuning value. And the method yet further includes controlling (i) an audio sample clock and (ii) an antenna data clock based on the modified reference signal.Type: ApplicationFiled: May 29, 2019Publication date: December 3, 2020Inventors: Michael Rodriguez, Honghui Xu
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Publication number: 20150109436Abstract: The present invention presents a smart dual-view video surveillance system, which carries a smart live-view video and a dedicated recording-view video from each camera to the video recorder. The smart live-view video only carries video data for the visible displayed pixels in its displaying video window and is dedicated for live-view monitoring. The dedicated recording-view video carries the complete video data and is dedicated to video recording and playback.Type: ApplicationFiled: October 23, 2013Publication date: April 23, 2015Applicant: Safeciety LLCInventors: Shidong Chen, Honghui Xu
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Publication number: 20140040966Abstract: In one aspect the present invention provides a mechanism to carry analog video, digital video and other types of data over a single cable simultaneously between the camera modem and the monitor modem. The analog video has low latency and can be used as real time monitoring, while the digital video is usually compressed high definition video and carried in IP packets. In the camera modem, the analog video is digitized and decoded into digital video, which is further compressed by a near-zero latency video encoder. All types of data, including the compressed analog video and digital video, are multiplexed together to form a single digital stream and transmitted over the cable. In the monitor modem at the other end of the cable, the near-zero latency video stream originated from analog video is de-multiplexed from the single digital downstream, decompressed and finally the corresponding analog video is reconstructed.Type: ApplicationFiled: July 9, 2013Publication date: February 6, 2014Inventors: Shidong Chen, Honghui Xu
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Patent number: 8401129Abstract: An automatic gain control (“AGC”) system. The system includes a first multiplier, an envelope detector, a summation module, a filter module, a convergence module, and a feedback module. The convergence module includes a convergence control module and a second multiplier. The feedback module includes an accumulator, a scalar multiplier module, and a third multiplier. The system is configured to adjust or modify its convergence speed according to the state of convergence of the AGC system, and the convergence speed of the AGC system is substantially independent of a signal level of the received signal.Type: GrantFiled: November 19, 2009Date of Patent: March 19, 2013Assignee: Techwell LLCInventors: Honghui Xu, Shidong Chen
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Patent number: 8259859Abstract: Systems and methods of carrier frequency acquisition or recovery in a receiver. The receiver is able to achieve carrier acquisition when a frequency offset is large (e.g., near a decision boundary). The receiver includes a demodulator, an equalizer, and a carrier recovery module. The carrier recovery module includes a decision device and phase detector, a phase error differentiator, a frequency direction confidence module, and a frequency and phase combiner module. The carrier recovery module calculates a phase error differential between a phase error at a first time and a phase error at a second time. Based on the phase error differential, the frequency direction confidence module generates a frequency offset confidence number. The frequency offset confidence number provides an indication of the direction of a frequency offset and a degree of certainty related to a detected direction (e.g., positive or negative) of the frequency offset.Type: GrantFiled: September 21, 2009Date of Patent: September 4, 2012Assignee: Techwell LLCInventor: Honghui Xu
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Publication number: 20110116582Abstract: An automatic gain control (“AGC”) system. The system includes a first multiplier, an envelope detector, a summation module, a filter module, a convergence module, and a feedback module. The convergence module includes a convergence control module and a second multiplier. The feedback module includes an accumulator, a scalar multiplier module, and a third multiplier. The system is configured to adjust or modify its convergence speed according to the state of convergence of the AGC system, and the convergence speed of the AGC system is substantially independent of a signal level of the received signal.Type: ApplicationFiled: November 19, 2009Publication date: May 19, 2011Inventors: Honghui Xu, Shidong Chen
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Publication number: 20110069789Abstract: Systems and methods of carrier frequency acquisition or recovery in a receiver. The receiver is able to achieve carrier acquisition when a frequency offset is large (e.g., near a decision boundary). The receiver includes a demodulator, an equalizer, and a carrier recovery module. The carrier recovery module includes a decision device and phase detector, a phase error differentiator, a frequency direction confidence module, and a frequency and phase combiner module. The carrier recovery module calculates a phase error differential between a phase error at a first time and a phase error at a second time. Based on the phase error differential, the frequency direction confidence module generates a frequency offset confidence number. The frequency offset confidence number provides an indication of the direction of a frequency offset and a degree of certainty related to a detected direction (e.g., positive or negative) of the frequency offset.Type: ApplicationFiled: September 21, 2009Publication date: March 24, 2011Inventor: Honghui Xu