Patents by Inventor Yulan Sun

Yulan Sun 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).

  • Patent number: 12133847
    Abstract: The present invention provides an oral pharmaceutical composition and a usage thereof, comprising a pharmaceutically acceptable acidic medicinal auxiliary material whose surface is modified and dabigatran etexilate or pharmaceutically acceptable salts or aquo-complexes thereof. The present invention further provides a surface modification method for a medicinal auxiliary material.
    Type: Grant
    Filed: July 7, 2021
    Date of Patent: November 5, 2024
    Assignee: Shenzhen Pharmacin, Co., Ltd.
    Inventors: Zeren Wang, Yulan Zhao, Lijiang Wang, Xiao Zhang, Jun Xu, Shunqin Chen, Meili Sun, Guisheng Jiang
  • Patent number: 10116316
    Abstract: A receiver with orthogonal beam forming technique is achieved that is capable of differentiating different signal components within the received composite signal. An adaptive processor is used to eliminate the signal component whose phase information is known or can be calculated. The phase information of the major component of a signal can be easily acquired by using a limiter. The phase information of other signal components can be acquired by their direction information and other characteristics, such as modulation scheme, etc. Multiple orthogonal beams can be formed by eliminating one unwanted signal component each time by the adaptive processor until all unwanted signal is eliminated. Thus, a composite signal from multiple sources can be broken down into their component signals.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: October 30, 2018
    Assignee: SPATIAL DIGITAL SYSTEMS, INC.
    Inventors: Donald C. D. Chang, Frank Lu, Yulan Sun
  • Patent number: 9628250
    Abstract: An advanced digital beam forming technique is achieved that is capable of simultaneously forming multiple beams and attenuating the cross-pol component at multiple locations. The proposed invention, comprising a series of signal inputs, optimization loops and weighting processes, successfully eliminates the side effect of an increase of the cross-pol in the process of beam-forming, thus reducing potential interference. This technique utilizes the orthogonally polarized signal component which is already available and can minimize both the horizontally polarized and vertically polarized cross-pol at the same time. The complexity of computation can be reduced by using only part of the orthogonal polarized components in the optimization.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: April 18, 2017
    Assignee: Spatial Digital Systems, Inc.
    Inventors: Donald C. D. Chang, Frank Lu, Yulan Sun
  • Publication number: 20160164191
    Abstract: A system for allowing ground terminals, specifically mobile ground terminals, to dynamically and electronically realign signal polarizations to match that of incoming and outgoing signal polarizations from designated space assets, specifically communications from satellites, comprising an adaptive re-orientation technique based on a cost minimization function, and a means of direct calculations of weighting components based on the knowledge of the orientation and bearing of both the satellites and the ground terminals. The embodiment will allow a mobile ground terminal to electronically realign itself to the signals of a satellite, without the need for mechanical processes to physically re-orient the antenna array.
    Type: Application
    Filed: January 28, 2016
    Publication date: June 9, 2016
    Inventors: Donald C.D. Chang, Frank Lu, Yulan Sun
  • Publication number: 20160142084
    Abstract: A receiver with orthogonal beam forming technique is achieved that is capable of differentiating different signal components within the received composite signal. An adaptive processor is used to eliminate the signal component whose phase information is known or can be calculated. The phase information of the major component of a signal can be easily acquired by using a limiter. The phase information of other signal components can be acquired by their direction information and other characteristics, such as modulation scheme, etc. Multiple orthogonal beams can be formed by eliminating one unwanted signal component each time by the adaptive processor until all unwanted signal is eliminated. Thus, a composite signal from multiple sources can be broken down into their component signals.
    Type: Application
    Filed: January 28, 2016
    Publication date: May 19, 2016
    Inventors: Donald C.D. Chang, Frank Lu, Yulan Sun
  • Publication number: 20160079682
    Abstract: A system for allowing ground terminals, specifically mobile ground terminals, to dynamically and electronically realign signal polarizations to match that of incoming and outgoing signal polarizations from designated space assets, specifically communications from satellites, comprising an adaptive re-orientation technique based on a cost minimization function, and a means of direct calculations of weighting components based on the knowledge of the orientation and bearing of both the satellites and the ground terminals. The embodiment will allow a mobile ground terminal to electronically realign itself to the signals of a satellite, without the need for mechanical processes to physically re-orient the antenna array.
    Type: Application
    Filed: November 13, 2015
    Publication date: March 17, 2016
    Inventors: Donald C.D. Chang, Frank Lu, Yulan Sun
  • Patent number: 9252799
    Abstract: A receiver with orthogonal beam forming technique is achieved that is capable of differentiating different signal components within the received composite signal. An adaptive processor is used to eliminate the signal component whose phase information is known or can be calculated. The phase information of the major component of a signal can be easily acquired by using a limiter. The phase information of other signal components can be acquired by their direction information and other characteristics, such as modulation scheme, etc. Multiple orthogonal beams can be formed by eliminating one unwanted signal component each time by the adaptive processor until all unwanted signal is eliminated. Thus, a composite signal from multiple sources can be broken down into their component signals.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: February 2, 2016
    Assignee: SPATIAL DIGITAL SYSTEMS, INC.
    Inventors: Donald C. D. Chang, Yulan Sun, Frank Lu
  • Publication number: 20140266895
    Abstract: A novel wide null forming system achieves both wide bandwidth and beam width null through employing an antenna array to receive and transmit signals to which a complex null weight vector, calculated by perturbation program, is applied. The novel wide null forming system includes a multiple-element antenna array for receiving or transmitting signals. Multiple conditioning units matching the number of elements is present to condition the signals for proper reception and analysis, after which a series of complex multiplier processors adds complex weights. After being weighted each constituent beam is combined in an adding processor to form one composite beam for use by the user.
    Type: Application
    Filed: June 2, 2014
    Publication date: September 18, 2014
    Applicant: SPATIAL DIGITAL SYSTEMS, INC.
    Inventors: Donald C.D. Chang, Yulan Sun, Yuanchang Liu
  • Patent number: 8773307
    Abstract: A novel wide null forming system achieves both wide bandwidth and beam width null through employing an antenna array to receive and transmit signals to which a complex null weight vector, calculated by perturbation program, is applied. The novel wide null forming system includes a multiple-element antenna array for receiving or transmitting signals. Multiple conditioning units matching the number of elements is present to condition the signals for proper reception and analysis, after which a series of complex multiplier processors adds complex weights. After being weighted each constituent beam is combined in an adding processor to form one composite beam for use by the user.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: July 8, 2014
    Assignee: Spatial Digital Systems, Inc.
    Inventors: Donald C. D. Chang, Yulan Sun, Yuanchang Liu
  • Patent number: 8634760
    Abstract: A system for allowing ground terminals, mobile or stationary, to dynamically and electronically re-align signal polarizations to match that of incoming signal polarizations from transmitting sources. An adaptive re-orientation technique utilizes a cost minimization function to determine the difference between actual orientation values and desired orientation values. Calculations of satellite and ground terminal orientations and bearings to create weighting components allow a mobile ground terminal to electronically realign itself to the signals of a transmitting source, thereby eliminating the need for physically re-orienting the antenna array through mechanical processes.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: January 21, 2014
    Inventors: Donald C. D. Chang, Frank Lu, Yulan Sun
  • Publication number: 20120243581
    Abstract: An advanced digital beam forming technique is achieved that is capable of simultaneously forming multiple beams and attenuating the cross-pol component at multiple locations. The proposed invention, comprising a series of signal inputs, optimization loops and weighting processes, successfully eliminates the side effect of an increase of the cross-pol in the process of beam-forming, thus reducing potential interference. This technique utilizes the orthogonally polarized signal component which is already available and can minimize both the horizontally polarized and vertically polarized cross-pol at the same time. The complexity of computation can be reduced by using only part of the orthogonal polarized components in the optimization.
    Type: Application
    Filed: March 24, 2011
    Publication date: September 27, 2012
    Inventors: FRANK LU, DONALD C. D. CHANG, YULAN SUN
  • Publication number: 20120063550
    Abstract: A receiver with orthogonal beam forming technique is achieved that is capable of differentiating different signal components within the received composite signal. An adaptive processor is used to eliminate the signal component whose phase information is known or can be calculated. The phase information of the major component of a signal can be easily acquired by using a limiter. The phase information of other signal components can be acquired by their direction information and other characteristics, such as modulation scheme, etc. Multiple orthogonal beams can be formed by eliminating one unwanted signal component each time by the adaptive processor until all unwanted signal is eliminated. Thus, a composite signal from multiple sources can be broken down into their component signals.
    Type: Application
    Filed: November 22, 2010
    Publication date: March 15, 2012
    Inventors: Donald C. D. Chang, Yulan Sun, Frank Lu
  • Publication number: 20120063542
    Abstract: A novel wide null forming system achieves both wide bandwidth and beam width null through employing an antenna array to receive and transmit signals to which a complex null weight vector, calculated by perturbation program, is applied. The novel wide null forming system includes a multiple-element antenna array for receiving or transmitting signals. Multiple conditioning units matching the number of elements is present to condition the signals for proper reception and analysis, after which a series of complex multiplier processors adds complex weights. After being weighted each constituent beam is combined in an adding processor to form one composite beam for use by the user.
    Type: Application
    Filed: November 22, 2010
    Publication date: March 15, 2012
    Inventors: Yuanchang Liu, Yulan Sun, Donald C. D. Chang
  • Publication number: 20120028572
    Abstract: A system for allowing ground terminals, specifically mobile ground terminals, to dynamically and electronically realign signal polarizations to match that of incoming and outgoing signal polarizations from designated space assets, specifically communications from satellites, comprising an adaptive re-orientation technique based on a cost minimization function, and a means of direct calculations of weighting components based on the knowledge of the orientation and bearing of both the satellites and the ground terminals. The embodiment will allow a mobile ground terminal to electronically realign itself to the signals of a satellite, without the need for mechanical processes to physically re-orient the antenna array.
    Type: Application
    Filed: July 30, 2010
    Publication date: February 2, 2012
    Inventors: Frank Lu, Donald C.D. Chang, Yulan Sun
  • Publication number: 20110032143
    Abstract: An advanced multiple-beam fixed ground terminal is achieved that is capable of simultaneously tracking multiple inclined orbit satellites, increasing and suppressing gain in multiple directions. The fixed user terminal equipped with digital beam-forming and null-forming technique can track and identify signals from multiple inclined orbit satellites at the same time. This technique enables a geostationary satellite drift to an inclined orbit without losing communication with ground terminals which not only increase the life span of an inclined orbit satellite, but also relieve the scarcity of geo-stationary orbit. In extreme cases, satellite can be placed in the same slot which further enhanced the usage of geosynchronous orbits. Another present invention is to from double nulls whose null width is much wider than a single null. A wider null increases the system robustness to frequency drift and change of signal direction, thus in turn reduce the system's complexity by lowering update beam wave vectors.
    Type: Application
    Filed: August 2, 2010
    Publication date: February 10, 2011
    Inventors: Yulan Sun, Donald D. C. Chang, Frank Lu
  • Patent number: D952932
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: May 24, 2022
    Inventor: Yulan Sun
  • Patent number: D961836
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: August 23, 2022
    Inventor: Yulan Sun