Patents by Inventor Charbel G. Rizk

Charbel G. Rizk 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: 10178336
    Abstract: A computational sensing array includes an array of sensing elements. In each sensing element, a first signal is generated from a transducer. A second signal is produced by a collection unit in response to receiving the first signal. The second signal may be modified, in a conditioning unit. A sensing element preprocessing unit generates a word representing the value of the modified second signal, and may produce an indication of change of the first signal. A current value of the word may be stored in a state holding element local to the sensing element, and a previous value of the word may be retained in a further state holding element local to the sensing element.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: January 8, 2019
    Assignee: The Johns Hopkins University
    Inventors: Charbel G. Rizk, Philippe O. Pouliquen, Andreas G. Andreou, Joseph H. Lin
  • Patent number: 10012534
    Abstract: A photodetection circuit includes an avalanche photodiode and a mode switching circuit that may be configured to selectively switch an operating mode of the photodetection circuit between linear mode and Geiger mode. The photodetection circuit may further include a quenching circuit configured to quench and reset the avalanche photodiode in response to an avalanche event when the photodetection circuit is operated in Geiger mode. The photodetection circuit may additionally include an integration circuit configured to integrate photocurrent output by the photodiode and generate integrated charge units when the photodetection circuit is operated in linear mode. The photodetection circuit may also include a counter configured to count pulses output by the avalanche photodiode when the photodetection circuit is operated in Geiger mode and to count integrated charge units generated by the integration circuit when the photodetection circuit is operated in linear mode.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: July 3, 2018
    Assignee: The Johns Hopkins University
    Inventors: Andreas G. Andreou, Joseph H. Lin, Philippe O. Pouliquen, Charbel G. Rizk
  • Patent number: 9927060
    Abstract: A vehicle includes a head section having a selectively actuated first plurality of claws, a tail section having a selectively actuated second plurality of claws, and a linear actuator operably coupling the head section to the tail section. The linear actuator is configured to be selectively extended and retracted. The vehicle is configured to move forward within an enclosed space by extending the linear actuator, while the first plurality of claws is not actuated and the second plurality of claws is actuated, then retracting the linear actuator, while the first plurality of claws is actuated and the second plurality of claws is not actuated.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: March 27, 2018
    Assignee: The Johns Hopkins University
    Inventors: Matthew S. Moses, Christopher Y. Brown, Charbel G. Rizk, Jason E. Tiffany, Michael D. Kutzer, David H. Scheidt
  • Patent number: 9835642
    Abstract: A scene measurement assembly includes a first illuminator assembly having multiple grids of coplanar illuminators, a first system-on-chip light sensing device having sensors disposed to receive reflected light emitted by the first illuminator assembly, a second illuminator assembly having plural grids of coplanar illuminators, each of the plural grids of coplanar illuminators being disposed in different planes relative to each other, and a second system-on-chip light sensing device that receives reflected light emitted by the second illuminator assembly. Each of the multiple grids of coplanar illuminators of both illuminator assemblies is disposed in different planes relative to each other. The first and second system-on-chip light sensing devices each have a sampling rate of greater than 10,000 frames per second relative to performing on-chip image data processing. The system-on-chip light sensing devices are each disposed at a scene to be measured at locations having different perspectives of the scene.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: December 5, 2017
    Assignee: The Johns Hopkins University
    Inventors: Samuel M. Smith, Charbel G. Rizk
  • Publication number: 20170295337
    Abstract: A computational sensing array includes an array of sensing elements. In each sensing element, a first signal is generated from a transducer. A second signal is produced by a collection unit in response to receiving the first signal. The second signal may be modified, in a conditioning unit. A sensing element preprocessing unit generates a word representing the value of the modified second signal, and may produce an indication of change of the first signal. A current value of the word may be stored in a state holding element local to the sensing element, and a previous value of the word may be retained in a further state holding element local to the sensing element.
    Type: Application
    Filed: June 28, 2017
    Publication date: October 12, 2017
    Inventors: Charbel G. Rizk, Philippe O. Pouliquen, Andreas G. Andreou, Joseph H. Lin
  • Patent number: 9723240
    Abstract: A computational sensing array includes an array of sensing elements. In each sensing element, a first signal is generated from a transducer. A second signal is produced by a collection unit in response to receiving the first signal. The second signal may be modified, in a conditioning unit. A sensing element preprocessing unit generates a word representing the value of the modified second signal, and may produce an indication of change of the first signal. A current value of the word may be stored in a state holding element local to the sensing element, and a previous value of the word may be retained in a further state holding element local to the sensing element.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: August 1, 2017
    Assignee: The Johns Hopkins University
    Inventors: Charbel G. Rizk, Philippe O. Pouliquen, Andreas G. Andreou, Joseph H. Lin
  • Publication number: 20170131143
    Abstract: A photodetection circuit includes an avalanche photodiode and a mode switching circuit that may be configured to selectively switch an operating mode of the photodetection circuit between linear mode and Geiger mode. The photodetection circuit may further include a quenching circuit configured to quench and reset the avalanche photodiode in response to an avalanche event when the photodetection circuit is operated in Geiger mode. The photodetection circuit may additionally include an integration circuit configured to integrate photocurrent output by the photodiode and generate integrated charge units when the photodetection circuit is operated in linear mode. The photodetection circuit may also include a counter configured to count pulses output by the avalanche photodiode when the photodetection circuit is operated in Geiger mode and to count integrated charge units generated by the integration circuit when the photodetection circuit is operated in linear mode.
    Type: Application
    Filed: July 2, 2014
    Publication date: May 11, 2017
    Inventors: Andreas G. Andreou, Joseph H. Lin, Philippe O. Pouliquen, Charbel G. Rizk
  • Publication number: 20160310223
    Abstract: A vehicle includes a head section having a selectively actuated first plurality of claws, a tail section having a selectively actuated second plurality of claws, and a linear actuator operably coupling the head section to the tail section. The linear actuator is configured to be selectively extended and retracted. The vehicle is configured to move forward within an enclosed space by extending the linear actuator, while the first plurality of claws is not actuated and the second plurality of claws is actuated, then retracting the linear actuator, while the first plurality of claws is actuated and the second plurality of claws is not actuated.
    Type: Application
    Filed: April 20, 2016
    Publication date: October 27, 2016
    Inventors: Matthew S. Moses, Christopher Y. Brown, Charbel G. Rizk, Jason E. Tiffany, Michael D. Kutzer, David H. Scheidt
  • Publication number: 20160050382
    Abstract: A computational sensing array includes an array of sensing elements. In each sensing element, a first signal is generated from a transducer. A second signal is produced by a collection unit in response to receiving the first signal. The second signal may be modified, in a conditioning unit. A sensing element preprocessing unit generates a word representing the value of the modified second signal, and may produce an indication of change of the first signal. A current value of the word may be stored in a state holding element local to the sensing element, and a previous value of the word may be retained in a further state holding element local to the sensing element.
    Type: Application
    Filed: October 27, 2015
    Publication date: February 18, 2016
    Inventors: Charbel G. Rizk, Philippe O. Pouliquen, Andreas G. Andreou, Joseph H. Lin
  • Patent number: 9200954
    Abstract: A computational sensing array includes an array of sensing elements. In each sensing element, a first signal is generated from a transducer. A second signal is produced by a collection unit in response to receiving the first signal. The second signal may be modified, in a conditioning unit. A sensing element preprocessing unit generates a word representing the value of the modified second signal, and may produce an indication of change of the first signal. A current value of the word may be stored in a state holding element local to the sensing element, and a previous value of the word may be retained in a further state holding element local to the sensing element.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: December 1, 2015
    Assignee: The Johns Hopkins University
    Inventors: Joseph H. Lin, Philippe O. Pouliquen, Andreas G. Andreou, Charbel G. Rizk
  • Publication number: 20150129745
    Abstract: A scene measurement assembly includes a first illuminator assembly having multiple grids of coplanar illuminators, a first system-on-chip light sensing device having sensors disposed to receive reflected light emitted by the first illuminator assembly, a second illuminator assembly having plural grids of coplanar illuminators, each of the plural grids of coplanar illuminators being disposed in different planes relative to each other, and a second system-on-chip light sensing device that receives reflected light emitted by the second illuminator assembly. Each of the multiple grids of coplanar illuminators of both illuminator assemblies is disposed in different planes relative to each other. The first and second system-on-chip light sensing devices each have a sampling rate of greater than 10,000 frames per second relative to performing on-chip image data processing. The system-on-chip light sensing devices are each disposed at a scene to be measured at locations having different perspectives of the scene.
    Type: Application
    Filed: November 6, 2014
    Publication date: May 14, 2015
    Inventors: Samuel M. Smith, Charbel G. Rizk