Patents by Inventor Zhiwei Zhu

Zhiwei Zhu 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: 9775299
    Abstract: A noninvasive method of source-sink regulation in rice belongs to the technical field of rice production. In this method, the source-sink relationship is regulated by a rice sterile line and its identical type of maintaining line being subjected to mixed-planting and insulated pollination, or sowing and transplanting at different times and insulated pollination, so as to construct rice plant samples with gradient difference of source-sink levels. The present invention is a kind of native, natural noninvasive method of source-sink regulation, which could broaden the traditional thinking of source-sink theoretical research, especially overcome the deficiency in conventional methods such as leaf-cutting, spikelet-thinning that lead to physical injury or physiological interference.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: October 3, 2017
    Assignee: CHINA NATIONAL RICE RESEARCH INSTITUTE
    Inventors: Weixing Zhang, Zhiwei Zhu, Xiyuan Liao, Xihong Shen, Guosheng Shao, Jie Min, Weigui Zhang
  • Patent number: 9734414
    Abstract: A system and method for efficiently locating in 3D an object of interest in a target scene using video information captured by a plurality of cameras. The system and method provide for multi-camera visual odometry wherein pose estimates are generated for each camera by all of the cameras in the multi-camera configuration. Furthermore, the system and method can locate and identify salient landmarks in the target scene using any of the cameras in the multi-camera configuration and compare the identified landmark against a database of previously identified landmarks. In addition, the system and method provide for the integration of video-based pose estimations with position measurement data captured by one or more secondary measurement sensors, such as, for example, Inertial Measurement Units (IMUs) and Global Positioning System (GPS) units.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: August 15, 2017
    Assignee: SRI International
    Inventors: Supun Samarasekera, Rakesh Kumar, Taragay Oskiper, Zhiwei Zhu, Oleg Naroditsky, Harpreet Sawhney
  • Publication number: 20170193710
    Abstract: A system and method for generating a mixed-reality environment is provided. The system and method provides a user-worn sub-system communicatively connected to a synthetic object computer module. The user-worn sub-system may utilize a plurality of user-worn sensors to capture and process data regarding a user's pose and location. The synthetic object computer module may generate and provide to the user-worn sub-system synthetic objects based information defining a user's real world life scene or environment indicating a user's pose and location. The synthetic objects may then be rendered on a user-worn display, thereby inserting the synthetic objects into a user's field of view. Rendering the synthetic objects on the user-worn display creates the virtual effect for the user that the synthetic objects are present in the real world.
    Type: Application
    Filed: March 21, 2017
    Publication date: July 6, 2017
    Inventors: Rakesh Kumar, Targay Oskiper, Oleg Naroditsky, Supun Samarasekera, Zhiwei Zhu, Janet Kim
  • Patent number: 9600067
    Abstract: A system and method for generating a mixed-reality environment is provided. The system and method provides a user-worn sub-system communicatively connected to a synthetic object computer module. The user-worn sub-system may utilize a plurality of user-worn sensors to capture and process data regarding a user's pose and location. The synthetic object computer module may generate and provide to the user-worn sub-system synthetic objects based information defining a user's real world life scene or environment indicating a user's pose and location. The synthetic objects may then be rendered on a user-worn display, thereby inserting the synthetic objects into a user's field of view. Rendering the synthetic objects on the user-worn display creates the virtual effect for the user that the synthetic objects are present in the real world.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: March 21, 2017
    Assignee: SRI International
    Inventors: Rakesh Kumar, Targay Oskiper, Oleg Naroditsky, Supun Samarasekera, Zhiwei Zhu, Janet Kim
  • Publication number: 20160078303
    Abstract: A system and method for efficiently locating in 3D an object of interest in a target scene using video information captured by a plurality of cameras. The system and method provide for multi-camera visual odometry wherein pose estimates are generated for each camera by all of the cameras in the multi-camera configuration. Furthermore, the system and method can locate and identify salient landmarks in the target scene using any of the cameras in the multi-camera configuration and compare the identified landmark against a database of previously identified landmarks. In addition, the system and method provide for the integration of video-based pose estimations with position measurement data captured by one or more secondary measurement sensors, such as, for example, Inertial Measurement Units (IMUs) and Global Positioning System (GPS) units.
    Type: Application
    Filed: August 25, 2015
    Publication date: March 17, 2016
    Inventors: Supun Samarasekera, Rakesh Kumar, Taragay Oskiper, Zhiwei Zhu, Oleg Naroditsky, Harpreet Sawhney
  • Patent number: 9209029
    Abstract: An asymetric gate MOS device is disclosed. The gate is a metal gate, and the metal gate has a different work function on the source side from that on the drain side of the MOS device, so that the overall performance parameters of the MOS device are more optimized. A method of making an asymetric gate MOS device is also disclosed. In the method, dopant ions are implanted into the gate of the MOS device, so as to cause the gate to have a different work function on the source side from that on the drain side of the MOS device. As a result, the overall performance parameters of the MOS device are more optimized. The method can be easily implemented.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: December 8, 2015
    Assignee: FUDAN UNIVERSITY
    Inventors: Dongping Wu, Cheng Hu, Lun Zhu, Zhiwei Zhu, Shili Zhang, Wei Zhang
  • Publication number: 20150282432
    Abstract: A noninvasive method of source-sink regulation in rice belongs to the technical field of rice production. In this method, the source-sink relationship is regulated by a rice sterile line and its identical type of maintaining line being subjected to mixed-planting and insulated pollination, or sowing and transplanting at different times and insulated pollination, so as to construct rice plant samples with gradient difference of source-sink levels. The present invention is a kind of native, natural noninvasive method of source-sink regulation, which could broaden the traditional thinking of source-sink theoretical research, especially overcome the deficiency in conventional methods such as leaf-cutting, spikelet-thinning that lead to physical injury or physiological interference.
    Type: Application
    Filed: September 24, 2013
    Publication date: October 8, 2015
    Inventors: Weixing Zhang, Zhiwei Zhu, Xiyuan Liao, Xihong Shen, Guosheng Shao, Jie Min, Weigui Zhang
  • Patent number: 9121713
    Abstract: A system and method for efficiently locating in 3D an object of interest in a target scene using video information captured by a plurality of cameras. The system and method provide for multi-camera visual odometry wherein pose estimates are generated for each camera by all of the cameras in the multi-camera configuration. Furthermore, the system and method can locate and identify salient landmarks in the target scene using any of the cameras in the multi-camera configuration and compare the identified landmark against a database of previously identified landmarks. In addition, the system and method provide for the integration of video-based pose estimations with position measurement data captured by one or more secondary measurement sensors, such as, for example, Inertial Measurement Units (IMUs) and Global Positioning System (GPS) units.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: September 1, 2015
    Assignee: SRI International
    Inventors: Supun Samarasekera, Rakesh Kumar, Taragay Oskiper, Zhiwei Zhu, Oleg Naroditsky, Harpreet Sawhney
  • Patent number: 9117068
    Abstract: A user creates a pattern in a two-dimensional grid by entering a password and enters a user name. This user name, password and pattern are stored locally on a computing device or are transmitted to a remote computer server for later authentication. Upon authentication, a choice of input grids is displayed. The user chooses a grid, enters the password into the grid in the form of the pattern, and also enters the user name. The computer retrieves the previously stored pattern and password with the user name. A match with the stored password indicates authentication. Each cell of the input grid may contain more than one symbol of the password. The input grid may also be filled with random characters to improve security. A grid may be a rectangular matrix, a circular region, an asymmetrical region, or other.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: August 25, 2015
    Assignee: Trend Micro Inc.
    Inventors: Lei Zhang, Zhiwei Zhu
  • Patent number: 9031809
    Abstract: A method and apparatus for providing three-dimensional navigation for a node comprising an inertial measurement unit for providing gyroscope, acceleration and velocity information (collectively IMU information); a ranging unit for providing distance information relative to at least one reference node; at least one visual sensor for providing images of an environment surrounding the node; a preprocessor, coupled to the inertial measurement unit, the ranging unit and the plurality of visual sensors, for generating error states for the IMU information, the distance information and the images; and an error-state predictive filter, coupled to the preprocessor, for processing the error states to produce a three-dimensional pose of the node.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: May 12, 2015
    Assignee: SRI International
    Inventors: Rakesh Kumar, Supun Samarasekera, Han-Pang Chiu, Zhiwei Zhu, Taragay Oskiper, Lu Wang, Raia Hadsell
  • Patent number: 8989483
    Abstract: A method and apparatus for determining a geographic location of a scene in a captured depiction comprising extracting a first set of features from the captured depiction by algorithmically analyzing the captured depiction, matching the extracted features of the captured depiction against a second set of extracted features associated with reference depictions with known geographic locations and when the matching is successful, identifying the geographic location of the scene in the captured depiction based on a known geographic location of a matching reference depiction from the reference depictions.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: March 24, 2015
    Assignee: SRI International
    Inventors: Hui Cheng, Harpreet Singh Sawhney, Bogdan Calin Mihai Matei, Zhiwei Zhu, Nicholas John Vander Valk
  • Publication number: 20140310595
    Abstract: A computing system for virtual personal assistance includes technologies to, among other things, correlate an external representation of an object with a real world view of the object, display virtual elements on the external representation of the object and/or display virtual elements on the real world view of the object, to provide virtual personal assistance in a multi-step activity or another activity that involves the observation or handling of an object and a reference document.
    Type: Application
    Filed: June 24, 2014
    Publication date: October 16, 2014
    Inventors: Girish Acharya, Rakesh Kumar, Supun Samarasekara, Louise Yarnall, Michael John Wolverton, Zhiwei Zhu, Ryan Villamil, Vlad Braznoi, James F. Carpenter, Glenn A. Murray
  • Publication number: 20140176603
    Abstract: A method and apparatus for training and guiding users comprising generating a scene understanding based on video and audio input of a scene of a user performing a task in the scene, correlating the scene understanding with a knowledge base to produce a task understanding, comprising one or more goals, of a current activity of the user, reasoning, based on the task understanding and a user's current state, a next step for advancing the user towards completing one of the one or more goals of the task understanding and overlaying the scene with an augmented reality view comprising one or more visual and audio representation of the next step to the user.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Applicant: SRI INTERNATIONAL
    Inventors: RAKESH KUMAR, SUPUN SAMARASEKERA, GIRISH ACHARYA, MICHAEL JOHN WOLVERTON, NECIP FAZIL AYAN, ZHIWEI ZHU, RYAN VILLAMIL
  • Patent number: 8697529
    Abstract: A method of making a transistor, comprising: providing a semiconductor substrate; forming a gate stack over the semiconductor substrate; forming an insulating layer over the semiconductor substrate; forming a depleting layer over the insulating layer; etching the depleting layer and the insulating layer; forming a metal layer over the semiconductor substrate; performing thermal annealing; and removing the metal layer. As advantages of the present invention, an upper outside part of each of the sidewalls include a material that can react with the metal layer, so that metal on two sides of the sidewalls is absorbed during the annealing process, preventing the metal from diffusing toward the semiconductor layer, and ensuring that the formed Schottky junctions can be ultra-thin and uniform, and have controllable and suppressed lateral growth.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: April 15, 2014
    Assignee: Fudan University
    Inventors: Dongping Wu, Jun Luo, Yinghua Piao, Zhiwei Zhu, Shili Zhang, Wei Zhang
  • Publication number: 20140048875
    Abstract: An asymetric gate MOS device is disclosed. The gate is a metal gate, and the metal gate has a different work function on the source side from that on the drain side of the MOS device, so that the overall performance parameters of the MOS device are more optimized. A method of making an asymetric gate MOS device is also disclosed. In the method, dopant ions are implanted into the gate of the MOS device, so as to cause the gate to have a different work function on the source side from that on the drain side of the MOS device. As a result, the overall performance parameters of the MOS device are more optimized. The method can be easily implemented.
    Type: Application
    Filed: December 28, 2011
    Publication date: February 20, 2014
    Applicant: FUDAN UNIVERSITY
    Inventors: Dongping Wu, Cheng Hu, Lun Zhu, Zhiwei Zhu, Shili Zhang, Wei Zhang
  • Publication number: 20140034956
    Abstract: An asymetric gate MOS device is disclosed. The gate is a metal gate, and the metal gate has a different work function on the source side from that on the drain side of the MOS device, so that the overall performance parameters of the MOS device are more optimized. A method of making an asymetric gate MOS device is also disclosed. In the method, dopant ions are implanted into the gate of the MOS device, so as to cause the gate to have a different work function on the source side from that on the drain side of the MOS device. As a result, the overall performance parameters of the MOS device are more optimized. The method can be easily implemented.
    Type: Application
    Filed: October 31, 2011
    Publication date: February 6, 2014
    Applicant: FUDAN UNIVERSITY
    Inventors: Dongping Wu, Cheng Hu, Lun Zhu, Zhiwei Zhu, Shili Zhang, Wei Zhang
  • Publication number: 20140034955
    Abstract: The present invention discloses a method of making nano-MOS devices having a metal gate, thereby avoiding the poly depletion effect, and enhancing the MOS device's performance. The method forms metal gates by depositing a metal film over sidewall surfaces on two sides of a polycrystalline semiconductor layer. The metal in the metal film diffuses toward the sidewall surfaces of the polycrystalline semiconductor layer and forms, after annealing, metal-semiconductor compound nanowires (i.e., metal gates) on the sidewall surfaces of the polycrystalline semiconductor layer. Thus, high-resolution lithography is not required to form metal compound semiconductor nanowires, resulting in significant cost saving. At the same time, a nano-MOS device is also disclosed, which includes a metal gate, thereby avoiding the poly depletion effect, and resulting in enhanced MOS device performance.
    Type: Application
    Filed: October 31, 2011
    Publication date: February 6, 2014
    Applicant: FUDAN UNIVERSITY
    Inventors: Dongping Wu, Cheng Hu, Luo Zhu, Zhiwei Zhu, Shili Zhang, Wei Zhang
  • Publication number: 20140008710
    Abstract: A metal-semiconductor-compound thin film is disclosed, which is formed between a semiconductor layer and a polycrystalline semiconductor layer, the metal-semiconductor-compound thin film having a thickness of about 2˜5 nm, so as to improve a contact between the semiconductor layer and the polycrystalline semiconductor layer. A DRAM storage cell is also disclosed. A metal-semiconductor-compound thin film having a thickness of about 2-5 nm is added between a drain region of a MOS transistor and a polycrystalline semiconductor buffer layer in the DRAM storage cell, so as to enhance read/write speed of the transistor of the DRAM storage cell while preventing excessive increase in leakage current between the drain region and a semiconductor substrate. A method for making a DRAM storage cell is also disclosed.
    Type: Application
    Filed: September 28, 2011
    Publication date: January 9, 2014
    Applicant: FUDAN UNIVERSITY
    Inventors: Dongping Wu, Shili Zhang, Zhiwei Zhu, Wei Zhang
  • Publication number: 20140011355
    Abstract: The present disclosure provides a method of making metal/semiconductor compound thin films, in which a target material is partially ionized into an ionic state during metal deposition using a PVD process, so as to produce metal ions, and in which a substrate bias voltage is applied to a semiconductor substrate, causing the metal ions to accelerate into the semiconductor substrate and enter the semiconductor substrate, resulting in more metal ions diffusing to the surface of the semiconductor substrate, greater deposition depth, and increased thickness of the eventually formed metal/semiconductor compound thin film. An amount of metal ions entering the semiconductor substrate can be adjusted by adjusting the substrate bias voltage, so as to adjust the thickness of the eventually formed metal/semiconductor compound.
    Type: Application
    Filed: September 28, 2011
    Publication date: January 9, 2014
    Applicant: FUDAN UNIVERSITY
    Inventors: Dongping Wu, Zhiwei Zhu, Shili Zhang, Wei Zhang
  • Publication number: 20140008604
    Abstract: The present invention disclosure provides a super-long semiconductor nanowire structure. The super-long semiconductor nanowire structure is intermittently widened to prevent fractures in the super-long semiconductor nanowire structure. At the same time, the present invention further provides a method of making a super-long semiconductor nanowire structure. The method forms an intermittently widened super-long semiconductor nanowire structure using photolithography and etching. Because the super-long semiconductor nanowire structure is intermittently widened, fracturing of the super-long semiconductor nanowire structure during etching can be avoided, making it easier to form a super-long and ultra-thin semiconductor nanowire structure.
    Type: Application
    Filed: September 28, 2011
    Publication date: January 9, 2014
    Applicant: FUDAN UNIVERSITY
    Inventors: Dongping Wu, Shi-Li Zhang, Zhiwei Zhu, Wei Zhang