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).

  • Publication number: 20180075774
    Abstract: A method and system for analyzing at least one food item on a food plate is disclosed. A plurality of images of the food plate is received by an image capturing device. A description of the at least one food item on the food plate is received by a recognition device. The description is at least one of a voice description and a text description. At least one processor extracts a list of food items from the description; classifies and segments the at least one food item from the list using color and texture features derived from the plurality of images; and estimates the volume of the classified and segmented at least one food item. The processor is also configured to estimate the caloric content of the at least one food item.
    Type: Application
    Filed: November 20, 2017
    Publication date: March 15, 2018
    Inventors: Manika PURI, Zhiwei Zhu, Jeffrey Lubin, Tom Pschar, Ajay Divakaran, Harpreet Sawhney
  • Patent number: 9892563
    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: March 21, 2017
    Date of Patent: February 13, 2018
    Assignee: SRI International
    Inventors: Rakesh Kumar, Taragay Oskiper, Oleg Naroditsky, Supun Samarasekera, Zhiwei Zhu, Janet Yonga Kim Knowles
  • Publication number: 20180017324
    Abstract: The present invention discloses a method for freeze-drying drug liposomes powder assisted by a variable-frequency alternating-current electric field, which includes the following steps: (1) preparing a drug-liposome suspension sample; (2) dehydrating the sample under a 1-10 kHz, 3-10 kV high-voltage alternating current; (3) freezing and drying the sample treated in step (2) at ?20° C. to ?40° C., under a 10-25 kHz, 0.2-1 kV high-voltage alternating current, until completion of the freezing process; and (4) heating and drying the sample in a vacuum until completion of sublimation and desorption, and obtaining the drug liposomes freeze-dried powder. The present invention not only greatly shortens a freezing and drying time, but also controls a size of nuclei and ice crystals, further ensuring a quality of the freeze-dried powder.
    Type: Application
    Filed: December 29, 2015
    Publication date: January 18, 2018
    Inventors: Dawen Sun, Lina Cheng, Zhiwei Zhu, Xin'an Zeng, Qijun Wang, Zi Zhang
  • 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