Patents by Inventor Junshan Leng

Junshan Leng 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: 12162169
    Abstract: A control system and method locates a partially or fully occluded target object in an area of interest. The location of the occluded object may be determined using visual information from a vision sensor and RF-based location information. Determining the location of the target object in this manner may effectively allow the control system to “see through” obstructions that are occluding the object. Model-based and/or deep-learning techniques may then be employed to move a robot into range relative to the target object to perform a predetermined (e.g., grasping) operation. This operation may be performed while the object is still in the occluded state or after a decluttering operation has been performed to remove one or more obstructions that are occluding light-of-sight vision to the object.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: December 10, 2024
    Assignee: Massachusetts Institute of Technology
    Inventors: Tara Boroushaki, Fadel Adib, Junshan Leng
  • Publication number: 20220168899
    Abstract: A control system and method locates a partially or fully occluded target object in an area of interest. The location of the occluded object may be determined using visual information from a vision sensor and RF-based location information. Determining the location of the target object in this manner may effectively allow the control system to “see through” obstructions that are occluding the object. Model-based and/or deep-learning techniques may then be employed to move a robot into range relative to the target object to perform a predetermined (e.g., grasping) operation. This operation may be performed while the object is still in the occluded state or after a decluttering operation has been performed to remove one or more obstructions that are occluding light-of-sight vision to the object.
    Type: Application
    Filed: November 19, 2021
    Publication date: June 2, 2022
    Inventors: Tara BOROUSHAKI, Fadel ADIB, Junshan LENG
  • Patent number: 11308291
    Abstract: A system may sense the contents of a closed container, by analyzing a wireless signal that reflects from an RFID tag on the outside of the container. The frequency response of the tag's antenna may be affected by the relative permittivity of the contents and by the tag's environment. The frequency response may be measured in a line-of-sight environment and in a multipath environment. Channel estimates may be calculated, based on the measurements. Channel ratios may be calculated by dividing line-of-sight channel estimates by multipath channel estimates. The resulting channel ratios may be fed into a variational autoencoder, which in turn generates synthetic data that contains information about multipath environments but not the contents. The output of the variational autoencoder may be converted into synthetic channel estimates, which may in turn be employed for anomaly detection, or to train a classifier to classify contents of the container.
    Type: Grant
    Filed: October 25, 2020
    Date of Patent: April 19, 2022
    Assignee: Massachusetts Institute of Technology
    Inventors: Unsoo Ha, Junshan Leng, Alaa Khaddaj, Yunfei Ma, Tzu Ming Hsu, Zexuan Zhong, Fadel Adib
  • Publication number: 20210110121
    Abstract: A system may sense the contents of a closed container, by analyzing a wireless signal that reflects from an RFID tag on the outside of the container. The frequency response of the tag's antenna may be affected by the relative permittivity of the contents and by the tag's environment. The frequency response may be measured in a line-of-sight environment and in a multipath environment. Channel estimates may be calculated, based on the measurements. Channel ratios may be calculated by dividing line-of-sight channel estimates by multipath channel estimates. The resulting channel ratios may be fed into a variational autoencoder, which in turn generates synthetic data that contains information about multipath environments but not the contents. The output of the variational autoencoder may be converted into synthetic channel estimates, which may in turn be employed for anomaly detection, or to train a classifier to classify contents of the container.
    Type: Application
    Filed: October 25, 2020
    Publication date: April 15, 2021
    Inventors: Unsoo Ha, Junshan Leng, Alaa Khaddaj, Yunfei Ma, Tzu Ming Hsu, Zexuan Zhong, Fadel Adib
  • Patent number: 10872209
    Abstract: A system may sense the contents of a closed container, by analyzing a wireless signal that reflects from an RFID tag on the outside of the container. The frequency response of the tag's antenna may be affected by the relative permittivity of the contents and by the tag's environment. The frequency response may be measured in a line-of-sight environment and in a multipath environment. Channel estimates may be calculated, based on the measurements. Channel ratios may be calculated by dividing line-of-sight channel estimates by multipath channel estimates. The resulting channel ratios may be fed into a variational autoencoder, which in turn generates synthetic data that contains information about multipath environments but not the contents. The output of the variational autoencoder may be converted into synthetic channel estimates, which may in turn be employed for anomaly detection, or to train a classifier to classify contents of the container.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: December 22, 2020
    Assignee: Massachusetts Institute of Technology
    Inventors: Unsoo Ha, Junshan Leng, Alaa Khaddaj, Yunfei Ma, Tzu Ming Hsu, Zexuan Zhong, Fadel Adib
  • Publication number: 20200117863
    Abstract: A system may sense the contents of a closed container, by analyzing a wireless signal that reflects from an RFID tag on the outside of the container. The frequency response of the tag's antenna may be affected by the relative permittivity of the contents and by the tag's environment. The frequency response may be measured in a line-of-sight environment and in a multipath environment. Channel estimates may be calculated, based on the measurements. Channel ratios may be calculated by dividing line-of-sight channel estimates by multipath channel estimates. The resulting channel ratios may be fed into a variational autoencoder, which in turn generates synthetic data that contains information about multipath environments but not the contents. The output of the variational autoencoder may be converted into synthetic channel estimates, which may in turn be employed for anomaly detection, or to train a classifier to classify contents of the container.
    Type: Application
    Filed: October 15, 2019
    Publication date: April 16, 2020
    Inventors: Unsoo Ha, Junshan Leng, Alaa Khaddaj, Yunfei Ma, Tzu Ming Hsu, Zexuan Zhong, Fadel Adib