Patents by Inventor Sang H. Chin

Sang H. Chin 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: 10484628
    Abstract: A pixel having a variable exposure for a scene capture device, the pixel comprising a photodiode, a buffer and a memory element and a switching mechanism. The memory element is configured to store an exposure control bit and the switching mechanism configured to control a variable exposure period of the photodiode based on the exposure control bit and to reset a voltage on said photodiode to a reference voltage.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: November 19, 2019
    Assignee: THE JOHNS HOPKINS UNIVERSITY
    Inventors: Jie Zhang, Ralph Etienne-Cummings, Tao Xiong, Trac D. Tran, Sang H. Chin
  • Publication number: 20180115725
    Abstract: A pixel having a variable exposure for a scene capture device, the pixel comprising a photodiode, a buffer and a memory element and a switching mechanism. The memory element is configured to store an exposure control bit and the switching mechanism configured to control a variable exposure period of the photodiode based on the exposure control bit and to reset a voltage on said photodiode to a reference voltage.
    Type: Application
    Filed: October 16, 2017
    Publication date: April 26, 2018
    Inventors: Jie Zhang, Ralph Etienne-Cummings, Tao Xiong, Trac D. Tran, Sang H. Chin
  • Patent number: 9635049
    Abstract: A processing device comprises a processor coupled to a memory and is configured to obtain data relating to communications initiated by host devices of a computer network of an enterprise, and to process the data to identify external domains contacted by the host devices. A graph inference algorithm is applied to analyze contacts of the host devices with the external domains in order to characterize one or more of the external domains as suspicious domains. The host devices are configured to counteract malware infection from the suspicious domains. The graph inference algorithm in some embodiments comprises a belief propagation algorithm, which may be initiated with one or more seeds corresponding to respective known suspicious domains or to respective ones of the external domains determined to be associated with command and control behavior. The processing device may be implemented in the computer network or an associated network security system.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: April 25, 2017
    Assignees: EMC IP Holding Company LLC, The Charles Stark Draper Laboratory, Inc.
    Inventors: Alina M. Oprea, Zhou Li, Sang H. Chin, Ting-Fang Yen
  • Patent number: 8471750
    Abstract: The present invention provides a system for use with an input signal and a clock signal. The system includes a physical random interval generator, a sampling analog-to-digital converter (ADC), a timing signal generator and a reconstructor. The physical random interval generator can generate a random output signal. The ADC can output a sampled output signal based on the input signal and the random output signal. The timing signal generator can output a timing signal based on the clock signal and the random output signal. The reconstructor can reconstruct an information signal based on the sampled output signal and the timing signal.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: June 25, 2013
    Assignee: The Johns Hopkins University
    Inventors: Daniel J. Rogers, Sang H. Chin, Radmil Elkis
  • Publication number: 20120075134
    Abstract: The present invention provides a system for use with an input signal and a clock signal. The system includes a physical random interval generator, a sampling analog-to-digital converter (ADC), a timing signal generator and a reconstructor. The physical random interval generator can generate a random output signal. The ADC can output a sampled output signal based on the input signal and the random output signal. The timing signal generator can output a timing signal based on the clock signal and the random output signal. The reconstructor can reconstruct an information signal based on the sampled output signal and the timing signal.
    Type: Application
    Filed: September 27, 2011
    Publication date: March 29, 2012
    Applicant: JOHNS HOPKINS UNIVERSITY
    Inventors: Daniel J. Rogers, Sang H. Chin, Radmil Elkis