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).
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Patent number: 10178336Abstract: 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: GrantFiled: June 28, 2017Date of Patent: January 8, 2019Assignee: The Johns Hopkins UniversityInventors: Charbel G. Rizk, Philippe O. Pouliquen, Andreas G. Andreou, Joseph H. Lin
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Patent number: 10012534Abstract: 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: GrantFiled: July 2, 2014Date of Patent: July 3, 2018Assignee: The Johns Hopkins UniversityInventors: Andreas G. Andreou, Joseph H. Lin, Philippe O. Pouliquen, Charbel G. Rizk
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Patent number: 9927060Abstract: 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: GrantFiled: April 20, 2016Date of Patent: March 27, 2018Assignee: The Johns Hopkins UniversityInventors: Matthew S. Moses, Christopher Y. Brown, Charbel G. Rizk, Jason E. Tiffany, Michael D. Kutzer, David H. Scheidt
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Patent number: 9835642Abstract: 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: GrantFiled: November 6, 2014Date of Patent: December 5, 2017Assignee: The Johns Hopkins UniversityInventors: Samuel M. Smith, Charbel G. Rizk
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Publication number: 20170295337Abstract: 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: ApplicationFiled: June 28, 2017Publication date: October 12, 2017Inventors: Charbel G. Rizk, Philippe O. Pouliquen, Andreas G. Andreou, Joseph H. Lin
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Patent number: 9723240Abstract: 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: GrantFiled: October 27, 2015Date of Patent: August 1, 2017Assignee: The Johns Hopkins UniversityInventors: Charbel G. Rizk, Philippe O. Pouliquen, Andreas G. Andreou, Joseph H. Lin
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Publication number: 20170131143Abstract: 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: ApplicationFiled: July 2, 2014Publication date: May 11, 2017Inventors: Andreas G. Andreou, Joseph H. Lin, Philippe O. Pouliquen, Charbel G. Rizk
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Publication number: 20160310223Abstract: 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: ApplicationFiled: April 20, 2016Publication date: October 27, 2016Inventors: Matthew S. Moses, Christopher Y. Brown, Charbel G. Rizk, Jason E. Tiffany, Michael D. Kutzer, David H. Scheidt
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Publication number: 20160050382Abstract: 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: ApplicationFiled: October 27, 2015Publication date: February 18, 2016Inventors: Charbel G. Rizk, Philippe O. Pouliquen, Andreas G. Andreou, Joseph H. Lin
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Patent number: 9200954Abstract: 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: GrantFiled: November 7, 2012Date of Patent: December 1, 2015Assignee: The Johns Hopkins UniversityInventors: Joseph H. Lin, Philippe O. Pouliquen, Andreas G. Andreou, Charbel G. Rizk
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Publication number: 20150129745Abstract: 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: ApplicationFiled: November 6, 2014Publication date: May 14, 2015Inventors: Samuel M. Smith, Charbel G. Rizk