Patents by Inventor Garry Chinn

Garry Chinn 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: 20200150293
    Abstract: Aspects of the subject disclosure may include, for example, measuring in a first semiconductor crystal two anode channels and two cathode channels and measuring in a second semiconductor crystal one anode channel and one cathode channel; determining whether an energy of a sum of the two anode channels is within an energy window; determining whether an energy of the one anode channel is within the energy window; responsive to the energy of the sum of the two anode channels being within the energy window and the energy of the one anode channel being within the energy window: separating the two anode channels and the two cathode channels into combinations of anode-cathode channel pairs; for each of the anode-cathode channel pairs, determining a respective direction difference angle, each respective direction difference angle being determined via use of the one anode channel and one cathode channel; determining from among the direction difference angles a determined one of the direction difference angles that has
    Type: Application
    Filed: October 25, 2019
    Publication date: May 14, 2020
    Applicants: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS, The Board of Trustees of the Leland Stanford Junior University
    Inventors: Shiva Abbaszadeh, Garry Chinn, Craig Levin
  • Patent number: 9197805
    Abstract: A method for providing an image from a device with a plurality of sensors and a plurality of time to digital converters (TDC) is provided. Data signals are generated by some of the plurality of sensors, wherein each sensor of the plurality of sensors provides output in parallel to more than one TDC of the plurality of TDCs and wherein each TDC of the plurality of TDCs receives in parallel input from more than one sensor of the plurality of sensors and where a binary matrix indicates which sensors are connected to which TDC. The data signals are transmitted from the sensors to the TDCs. TDC signals are generated from the data signals. Group testing is used to decode the TDC signals based on the binary matrix.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: November 24, 2015
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Garry Chinn, Peter D. Olcott, Craig Steven Levin, Ewout Van Den Berg, Carlos Alberto Sing-Long Collao, Emmanuel J. Candes
  • Patent number: 8849002
    Abstract: Compressed sensing (CS) estimation approaches rely on a priori sparsity to significantly reduce the number of samples needed to provide high sampling fidelity, relative to the normal Shannon-Nyquist limit. Accordingly, CS approaches are of considerable interest for detector multiplexing in applications which have inherently sparse signals (e.g., the two correlated photon detection events in PET imaging). However, CS approaches also tend to fare poorly in the presence of noise, which has limited their applicability in practice. In this work, we show that CS estimation can be used to provide an estimate of the support of an image. This estimated support is then used as a constraint for maximum likelihood image reconstruction. This approach has robust noise performance and provides high reconstruction fidelity.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: September 30, 2014
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Garry Chinn, Peter D. Olcott, Craig S. Levin
  • Publication number: 20140226043
    Abstract: A method for providing an image from a device with a plurality of sensors and a plurality of time to digital converters (TDC) is provided. Data signals are generated by some of the plurality of sensors, wherein each sensor of the plurality of sensors provides output in parallel to more than one TDC of the plurality of TDCs and wherein each TDC of the plurality of TDCs receives in parallel input from more than one sensor of the plurality of sensors and where a binary matrix indicates which sensors are connected to which TDC. The data signals are transmitted from the sensors to the TDCs. TDC signals are generated from the data signals. Group testing is used to decode the TDC signals based on the binary matrix.
    Type: Application
    Filed: February 11, 2014
    Publication date: August 14, 2014
    Inventors: Garry CHINN, Peter D. OLCOTT, Craig Steven LEVIN, Ewout VAN DEN BERG, Carlos Alberto SING-LONG COLLAO, Emmanuel J. CANDES
  • Publication number: 20130142409
    Abstract: Compressed sensing (CS) estimation approaches rely on a priori sparsity to significantly reduce the number of samples needed to provide high sampling fidelity, relative to the normal Shannon-Nyquist limit. Accordingly, CS approaches are of considerable interest for detector multiplexing in applications which have inherently sparse signals (e.g., the two correlated photon detection events in PET imaging). However, CS approaches also tend to fare poorly in the presence of noise, which has limited their applicability in practice. In this work, we show that CS estimation can be used to provide an estimate of the support of an image. This estimated support is then used as a constraint for maximum likelihood image reconstruction. This approach has robust noise performance and provides high reconstruction fidelity.
    Type: Application
    Filed: July 7, 2011
    Publication date: June 6, 2013
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Garry Chinn, Peter D. Olcott, Craig S. Levin
  • Patent number: 8183531
    Abstract: Methods and systems for producing an image. Measurement data is obtained for a coincidence photon event, and a line projector function is generated based on the obtained measurement data. Additional measurement data is obtained for a single photon event, and a cone-surface projector function is generated based on the additional measurement data. An image is reconstructed using the generated line projector function and the generated cone-surface projector function. In another example method for producing an image, a measurement is obtained, and a projector function is generated using the obtained measurement. The generated projector function is modified based on an a priori image. An image is reconstructed using the modified projector function.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: May 22, 2012
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Garry Chinn, Craig S. Levin, Angela M. Foudray
  • Patent number: 7968850
    Abstract: Methods and systems for producing an image. A measurement is obtained, and a projector function is generated using the obtained measurement. The generated projector function is modified based on an a priori image. An image is reconstructed using the modified projector function.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: June 28, 2011
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Garry Chinn, Craig S. Levin
  • Patent number: 7888651
    Abstract: Methods and systems for determining a location of a photon event for an imaging system including a plurality of 3-D detectors. For one of the photons in the photon pair, an interaction in a first 3-D detector is detected. For the other of the photons in the photon pair, at least two interactions in a second 3-D detector are detected. A cone-surface projector function is produced based on the at least two interaction locations in the second 3-D detector. A projector function is produced based on the produced cone-surface projector function, the detected interaction in the first 3-D detector, and the at least two detected interactions in the second 3-D detector.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: February 15, 2011
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Garry Chinn, Craig S. Levin
  • Publication number: 20100148075
    Abstract: Methods and systems for producing an image. A measurement is obtained, and a projector function is generated using the obtained measurement. The generated projector function is modified based on an a priori image. An image is reconstructed using the modified projector function.
    Type: Application
    Filed: February 23, 2010
    Publication date: June 17, 2010
    Applicant: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Garry Chinn, Craig S. Levin, Angela M. Foudray
  • Publication number: 20090078876
    Abstract: Methods and systems for determining a location of a photon event for an imaging system including a plurality of 3-D detectors. For one of the photons in the photon pair, an interaction in a first 3-D detector is detected. For the other of the photons in the photon pair, at least two interactions in a second 3-D detector are detected. A cone-surface projector function is produced based on the at least two interaction locations in the second 3-D detector. A projector function is produced based on the produced cone-surface projector function, the detected interaction in the first 3-D detector, and the at least two detected interactions in the second 3-D detector.
    Type: Application
    Filed: May 21, 2008
    Publication date: March 26, 2009
    Inventors: Garry Chinn, Craig S. Levin
  • Publication number: 20090072156
    Abstract: Methods and systems for producing an image. Measurement data is obtained for a coincidence photon event, and a line projector function is generated based on the obtained measurement data. Additional measurement data is obtained for a single photon event, and a cone-surface projector function is generated based on the additional measurement data. An image is reconstructed using the generated line projector function and the generated cone-surface projector function. In another example method for producing an image, a measurement is obtained, and a projector function is generated using the obtained measurement. The generated projector function is modified based on an a priori image. An image is reconstructed using the modified projector function.
    Type: Application
    Filed: May 21, 2008
    Publication date: March 19, 2009
    Inventors: Garry Chinn, Craig s. Levin, Angela M. Foudray
  • Publication number: 20030115289
    Abstract: Systems and corresponding methods are provided for navigating a data structure comprising a plurality of nodes. Each node in the data structure is associated with content from a content source and at least a keyword defining the content. The system receives a voice query to access content in one of the plurality of nodes. The system then recognizes one or more search keywords in the voice query based on a navigation grammar defined by a first active navigation scope associated with a first set of nodes in the data structure. The system then searches the first set of nodes to find a node with one or more keywords that best match the search keywords. The node that best matches the search keywords is then visited. The system provides content of the visited node.
    Type: Application
    Filed: December 14, 2001
    Publication date: June 19, 2003
    Inventors: Garry Chinn, Sven H. Khatri
  • Publication number: 20020010715
    Abstract: A method comprising: providing a navigation tree comprising a semantic, hierarchical structure, having one or more paths associated with content of a conventional markup language document and a grammar comprising vocabulary including one or more keywords; receiving a request to access the content; responsive to the request, traversing a path in the navigation tree, if the request includes at least one keyword of the vocabulary, is provided.
    Type: Application
    Filed: July 26, 2001
    Publication date: January 24, 2002
    Inventors: Garry Chinn, Benedict R. Dugan, Roger E. Hagen, Michael R. Sexton, Sven H. Khatri, Tim J. King
  • Patent number: 5233549
    Abstract: Apparatus and methods for reducing the quantization error in shift-matrix finite impulse response (FIR) filters (210) operate on a sampled analog signal (11) converted to a sequence of digital signal samples (13). A weight conversion device (23) converts a weight signal W comprising a sequence of tap weights W.sub.i into both a corresponding series of logarithmically-encoded weights W'.sub.i and a series of weight error values .DELTA.W.sub.i. A multiplication device (30) multiplies each of the digital signal samples (13) with the first series of logarithmically-encoded weights W'.sub.i and provides the results to an accumulator (26). A signal encoding device (40) converts the digital signal samples (13) into a sequence of logarithmically-encoded digital signal samples (42). A quantization error correction device (220) multiplies each of the weight error values .DELTA.W.sub.i by the logarithmically-encoded digital signal samples (42) and also provides the results simultaneously to the accumulator (26).
    Type: Grant
    Filed: April 21, 1992
    Date of Patent: August 3, 1993
    Assignee: Loral Aerospace Corp.
    Inventor: Garry Chinn
  • Patent number: 5201292
    Abstract: An electronic detection system for detecting vibration patterns from physical events, such as engine knocking or articulated speech, senses a vibration source with a wideband transducer to provide a sensed signal, then converts this signal to energy amplitude and spectral frequency form to extract detectable features of the vibration pattern. Events are detected when a controller determines that the sensed energy and spectral data exceed adaptively-predetermined energy and spectral thresholds, preferably for a duration exceeding predefined time windows.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: April 13, 1993
    Assignee: Loral Aerospace Corp.
    Inventors: Kamil A. Grajski, Carson Chen, Garry Chinn