Patents by Inventor David Leo McDaniel
David Leo McDaniel 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: 9851455Abstract: Embodiments of a solid state photomultiplier are provided herein. In some embodiments, a solid state photomultiplier may include a plurality of pixels, wherein each pixel of the plurality of pixels comprises a plurality of subpixels; and a first set of buffer amplifiers, wherein each buffer amplifier of the first set of buffer amplifiers is respectively coupled to a subpixel of the plurality of subpixels.Type: GrantFiled: April 16, 2015Date of Patent: December 26, 2017Assignee: General Electric CompanyInventors: Sergei Ivanovich Dolinsky, Jianjun Guo, David Leo McDaniel, Ravindra Mohan Manjeshwar, Geng Fu
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Publication number: 20170330980Abstract: A silicon photomultiplier array includes a plurality of microcells within the photomultiplier array and located on the silicon wafer, the plurality of microcells arranged in rows and columns, each of the plurality of microcells including an output port, and configured to provide a pulse waveform having pulse characteristics, at least one repatterning dielectric layer in contact with a silicon wafer layer back surface, the silicon wafer having an active surface opposed to the back surface, and a plurality of respective through-silicon-vias (TSVs) coupling the output port of respective ones of the plurality of microcells on the active surface of the silicon wafer to a plurality of respective circuit traces on the at least one repatterning dielectric layer disposed on the back surface of the silicon wafer. A method for producing the silicon photomultiplier array is also disclosed.Type: ApplicationFiled: May 16, 2016Publication date: November 16, 2017Inventors: James Wilson ROSE, David Leo McDANIEL, Sergei Ivanovich DOLINSKY, Sabarni PALIT
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Patent number: 9753151Abstract: A photon detector having an optical transparent plate and photodiode array interconnected by an optical light guide array. The optical light guide array including elements providing a transmission line between the optical transparent plate and the photodiode array, where the position of one or more optical light guide elements is formed to adjust for a miss-registered photodiode individual element.Type: GrantFiled: July 31, 2015Date of Patent: September 5, 2017Assignee: General Electric CompanyInventors: James Wilson Rose, David Leo McDaniel, Jianjun Guo, Sergei Ivanovich Dolinsky, Adrian Ivan
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Patent number: 9575191Abstract: Embodiments of a solid state photomultiplier are provided herein. In some embodiments, a solid state photomultiplier may include a microcell configured to generate an analog signal when exposed to optical photons, a quench resistor electrically coupled to the microcell in series; and a first switch disposed between the quench resistor and an output of the solid state photomultiplier, the first switch electrically coupled to the microcell via the quench resistor and configured to selectively couple the microcell to the output.Type: GrantFiled: June 6, 2016Date of Patent: February 21, 2017Assignee: General Electric CompanyInventors: Sergei Ivanovich Dolinsky, David Leo McDaniel
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Patent number: 9568620Abstract: Embodiments of a solid state photomultiplier are provided herein. In some embodiments, a photosensor may include a sensing element; and readout electronics, wherein the sensing element is AC coupled to the readout electronics. In some embodiments, a solid state photomultipler may include a microcell having; a sensing element; and readout electronics, wherein the sensing element is AC coupled to the readout electronics.Type: GrantFiled: September 11, 2015Date of Patent: February 14, 2017Assignee: General Electric CompanyInventors: JianJun Guo, Sergei Ivanovich Dolinsky, David Leo McDaniel, Jonathan David Short
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Publication number: 20170031038Abstract: A photon detector having an optical transparent plate and photodiode array interconnected by an optical light guide array. The optical light guide array including elements providing a transmission line between the optical transparent plate and the photodiode array, where the position of one or more optical light guide elements is formed to adjust for a miss-registered photodiode individual element.Type: ApplicationFiled: July 31, 2015Publication date: February 2, 2017Inventors: James Wilson Rose, David Leo McDaniel, Jianjun Guo, Sergei Ivanovich Dolinsky, Adrian Ivan
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Patent number: 9541656Abstract: In accordance with the present approach, a dark current is measured for one or more detector elements and used to determine a gain or gain compensation for the respective detector elements. In certain embodiments, the dark current is used to determine a temperature for the respective detector element and the temperature is used to determine the gain or gain compensation. In other embodiments, the dark current is used to calculate the gain or gain compensation for the respective detector element without calculating an intermediate temperature value, such as via the use of a transfer function.Type: GrantFiled: December 20, 2013Date of Patent: January 10, 2017Assignee: General Electric CompanyInventors: Sergei Ivanovich Dolinsky, David Leo McDaniel
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Publication number: 20160356899Abstract: Embodiments of a solid state photomultiplier are provided herein. In some embodiments, a solid state photomultiplier may include a microcell configured to generate an analog signal when exposed to optical photons, a quench resistor electrically coupled to the microcell in series; and a first switch disposed between the quench resistor and an output of the solid state photomultiplier, the first switch electrically coupled to the microcell via the quench resistor and configured to selectively couple the microcell to the output.Type: ApplicationFiled: June 6, 2016Publication date: December 8, 2016Inventors: Sergei Ivanovich Dolinsky, David Leo McDaniel
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Publication number: 20160308074Abstract: Embodiments of a solid state photomultiplier are provided herein. In some embodiments, a solid state photomultiplier may include a plurality of pixels, wherein each pixel of the plurality of pixels comprises a plurality of subpixels; and a first set of buffer amplifiers, wherein each buffer amplifier of the first set of buffer amplifiers is respectively coupled to a subpixel of the plurality of subpixels.Type: ApplicationFiled: April 16, 2015Publication date: October 20, 2016Inventors: Sergei Ivanovich Dolinsky, Jianjun Guo, David Leo McDaniel, Ravindra Mohan Manjeshwar, Geng Fu
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Patent number: 9405023Abstract: A multichannel application specific integrated circuit (ASIC) for interfacing with an array of photodetectors in a positron emission tomography (PET) imaging system includes a front end circuit configured to be coupled to the photodetectors and to receive discrete analog signals therefrom. The ASIC further includes a time discriminating circuit operably coupled to the front end circuit and configured to generate a hit signal based on a combination of the discrete analog signals, and an energy discriminating circuit operably coupled to the front end circuit and configured to generate a summed energy output signal based on each of the discrete analog signals and summed row and column output signals based on each of the discrete analog signals. The summed energy output signal represents an energy level of the detected radiation in the array of photodetectors, and the summed row and column output signals represent a location of the detected radiation.Type: GrantFiled: February 12, 2013Date of Patent: August 2, 2016Assignee: General Electric CompanyInventors: Jianjun Guo, Sergei Ivanovich Dolinsky, Changlyong Kim, James Lindgren Malaney, David Leo McDaniel, William Peterson
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Patent number: 9407843Abstract: A compensating current is applied at one or more points in a signal processing path to compensate for one or both of a dark or offset current present in an input signal. In certain implementations, the dark or offset current is present in a signal generated by a photomultiplier device. The dark or offset current may be monitored in an output of the signal processing path and, the monitoring being used to determine how much compensation is needed in the signal processing path and to allocate where in the signal processing path the compensation current will be applied.Type: GrantFiled: October 23, 2013Date of Patent: August 2, 2016Assignee: General Electric CompanyInventors: Jianjun Guo, Chang Lyong Kim, David Leo McDaniel, James Lindgren Malaney, Sergei Ivanovich Dolinsky
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Publication number: 20160084970Abstract: Embodiments of a solid state photomultiplier are provided herein. In some embodiments, a photosensor may include a sensing element; and readout electronics, wherein the sensing element is AC coupled to the readout electronics. In some embodiments, a solid state photomultipler may include a microcell having; a sensing element; and readout electronics, wherein the sensing element is AC coupled to the readout electronics.Type: ApplicationFiled: September 11, 2015Publication date: March 24, 2016Inventors: JianJun Guo, Sergei Ivanovich Dolinsky, David Leo McDaniel, Jonathan David Short
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Patent number: 9279892Abstract: A scintillator crystal array that is configured to receive rays emitted by an object to be imaged and to emit light energy responsive to the received rays includes plural crystals. At least one of the crystals includes an upper surface, a lower surface, and plural sides. The upper surface may be configured to receive the rays from the object to be imaged. The lower surface is disposed opposite the upper surface. The plural sides extend between the upper surface and the lower surface. At least one side includes a roughened side surface and at least one other side includes a polished side surface.Type: GrantFiled: February 5, 2014Date of Patent: March 8, 2016Assignee: General Electric CompanyInventors: Chang Lyong Kim, David Leo McDaniel, Mikiko Ito
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Patent number: 9207334Abstract: Methods and systems for a light sensor for a gamma ray detector of a positron emission tomography (PET) imaging system is provided. The methods and systems include a plurality of micro-cells forming a micro-cell array. The methods and systems include a set of signal traces electrically coupling the plurality of micro-cells to the pin-out. The set of signal traces are configured to define a non-orthogonal signal path from each of the micro-cells to the pin-out.Type: GrantFiled: December 30, 2014Date of Patent: December 8, 2015Assignee: General Electric CompanyInventors: Mikiko Ito, David Leo McDaniel, Sergei Ivanovich Dolinsky, Geng Fu
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Patent number: 9182506Abstract: Methods and systems for signal communication in gamma ray detectors are provided. One gamma ray detector includes a scintillator block having a plurality of scintillator crystals and a plurality of light sensors coupled to the scintillator crystals and having a plurality of microcells. Each of the plurality of light sensors have a local summing point in each of a plurality of signal summing regions, wherein the local summing points are connected to the plurality of microcells. The plurality of light sensors also each include a main summing point connected to the plurality of local summing points, wherein the main summing point is located a same distance from each of the local summing points.Type: GrantFiled: June 28, 2013Date of Patent: November 10, 2015Assignee: General Electric CompanyInventors: Chang Lyong Kim, David Leo McDaniel
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Patent number: 9151851Abstract: A multiplexing circuit for a positron emission tomography (PET) detector includes a delay circuit and a multiplexer communicating with the delay circuit. The delay circuit configured to receive a plurality of timing pickoff (TPO) signals from a plurality of positron emission tomography (PET) detector units, add a delay time to at least one of the plurality of TPO signals, and transmit the TPO signals based on the delay time to the multiplexer, the multiplexer configured to a multiplex the TPO signals and output a single TPO signal from the plurality of TPO signals to a Time-to-Digital Convertor (TDC). A method of operating a multiplexer and a imaging system including a multiplexer are also provided.Type: GrantFiled: June 27, 2013Date of Patent: October 6, 2015Assignee: General Electric CompanyInventors: Mark David Fries, David Leo McDaniel
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Publication number: 20150219771Abstract: A scintillator crystal array that is configured to receive rays emitted by an object to be imaged and to emit light energy responsive to the received rays includes plural crystals. At least one of the crystals includes an upper surface, a lower surface, and plural sides. The upper surface may be configured to receive the rays from the object to be imaged. The lower surface is disposed opposite the upper surface. The plural sides extend between the upper surface and the lower surface. At least one side includes a roughened side surface and at least one other side includes a polished side surface.Type: ApplicationFiled: February 5, 2014Publication date: August 6, 2015Applicant: General Electric CompanyInventors: Chang Lyong Kim, David Leo McDaniel, Mikiko Ito
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Publication number: 20150177394Abstract: In accordance with the present approach, a dark current is measured for one or more detector elements and used to determine a gain or gain compensation for the respective detector elements. In certain embodiments, the dark current is used to determine a temperature for the respective detector element and the temperature is used to determine the gain or gain compensation. In other embodiments, the dark current is used to calculate the gain or gain compensation for the respective detector element without calculating an intermediate temperature value, such as via the use of a transfer function.Type: ApplicationFiled: December 20, 2013Publication date: June 25, 2015Applicant: GENERAL ELECTRIC COMPANYInventors: Sergei Ivanovich Dolinsky, David Leo McDaniel
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Publication number: 20150108328Abstract: A compensating current is applied at one or more points in a signal processing path to compensate for one or both of a dark or offset current present in an input signal. In certain implementations, the dark or offset current is present in a signal generated by a photomultiplier device. The dark or offset current may be monitored in an output of the signal processing path and, the monitoring being used to determine how much compensation is needed in the signal processing path and to allocate where in the signal processing path the compensation current will be applied.Type: ApplicationFiled: October 23, 2013Publication date: April 23, 2015Applicant: General Electric CompanyInventors: Jianjun Guo, Chang Lyong Kim, David Leo McDaniel, James Lindgren Malaney, Sergei Ivanovich Dolinsky
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Patent number: 8937285Abstract: Methods and systems for signal communication in gamma ray detectors are provided. One gamma ray detector includes a scintillator block having a plurality of scintillator crystals and a plurality of light sensors coupled to the scintillator crystals and having a plurality of microcells. Each of the plurality of light sensors has a first set of signal traces connected to the microcells and a second set of signal traces connected along the first set of signal traces and together forming a signal path to a summing signal trace. Each of the plurality of light sensors also has a pin-out connected to the summing signal trace.Type: GrantFiled: June 18, 2012Date of Patent: January 20, 2015Assignee: General Electric CompanyInventors: Chang Lyong Kim, David Leo McDaniel, James Lindgren Malaney, William Todd Peterson, Gary V. McBroom