Patents by Inventor Daniel David Harrison
Daniel David Harrison 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: 11701073Abstract: Systems and method for performing X-ray computed tomography (CT) that can improve spectral separation and decrease motion artifacts without increasing radiation dose are provided. The systems and method can be used with either a kVp-switching source or a single-kVp source. When used with a kVp-switching source, an absorption grating and a filter grating can be disposed between the X-ray source and the sample to be imaged. Relative motion of the filter and absorption gratings can by synchronized to the kVp switching frequency of the X-ray source. When used with a single-kVp source, a combination of absorption and filter gratings can be used and can be driven in an oscillation movement that is optimized for a single-kVp X-ray source. With a single-kVp source, the absorption grating can also be omitted and the filter grating can remain stationary.Type: GrantFiled: June 22, 2021Date of Patent: July 18, 2023Assignee: Rensselaer Polytechnic InstituteInventors: Daniel David Harrison, Ge Wang
-
Publication number: 20210321961Abstract: Systems and method for performing X-ray computed tomography (CT) that can improve spectral separation and decrease motion artifacts without increasing radiation dose are provided. The systems and method can be used with either a kVp-switching source or a single-kVp source. When used with a kVp-switching source, an absorption grating and a filter grating can be disposed between the X-ray source and the sample to be imaged. Relative motion of the filter and absorption gratings can by synchronized to the kVp switching frequency of the X-ray source. When used with a single-kVp source, a combination of absorption and filter gratings can be used and can be driven in an oscillation movement that is optimized for a single-kVp X-ray source. With a single-kVp source, the absorption grating can also be omitted and the filter grating can remain stationary.Type: ApplicationFiled: June 22, 2021Publication date: October 21, 2021Applicant: Rensselaer Polytechnic InstituteInventors: Daniel David Harrison, Ge Wang
-
Patent number: 11051772Abstract: Systems and method for performing X-ray computed tomography (CT) that can improve spectral separation and decrease motion artifacts without increasing radiation dose are provided. The systems and method can be used with either a kVp-switching source or a single-kVp source. When used with a kVp-switching source, an absorption grating and a filter grating can be disposed between the X-ray source and the sample to be imaged. Relative motion of the filter and absorption gratings can by synchronized to the kVp switching frequency of the X-ray source. When used with a single-kVp source, a combination of absorption and filter gratings can be used and can be driven in an oscillation movement that is optimized for a single-kVp X-ray source. With a single-kVp source, the absorption grating can also be omitted and the filter grating can remain stationary.Type: GrantFiled: March 6, 2019Date of Patent: July 6, 2021Assignee: Rensselaer Polytechnic InstituteInventors: Daniel David Harrison, Ge Wang
-
Publication number: 20210035340Abstract: In some embodiments, a method of machine learning includes identifying, by an auto encoder network, a simulator feature based, at least in part, on a received first simulator data set and an emulator feature based, at least in part, on a received first emulator data set. The method further includes determining, by a synthesis control circuitry, a synthesized feature based, at least in part, on the simulator feature and based, at least in part, on the emulator feature; and generating, by the auto encoder network, an intermediate data set based, at least in part, on a second simulator data set and including the synthesized feature. Some embodiments of the method further include determining, by a generative artificial neural network, a synthesized data set based, at least in part, on the intermediate data set and based, at least in part, on an objective function.Type: ApplicationFiled: February 11, 2019Publication date: February 4, 2021Applicant: RENSSELAER POLYTECHNIC INSTITUTEInventors: Ge Wang, Daniel David Harrison, Xun Jia, Klaus Mueller
-
Publication number: 20190269375Abstract: Systems and method for performing X-ray computed tomography (CT) that can improve spectral separation and decrease motion artifacts without increasing radiation dose are provided. The systems and method can be used with either a kVp-switching source or a single-kVp source. When used with a kVp-switching source, an absorption grating and a filter grating can be disposed between the X-ray source and the sample to be imaged. Relative motion of the filter and absorption gratings can by synchronized to the kVp switching frequency of the X-ray source. When used with a single-kVp source, a combination of absorption and filter gratings can be used and can be driven in an oscillation movement that is optimized for a single-kVp X-ray source. With a single-kVp source, the absorption grating can also be omitted and the filter grating can remain stationary.Type: ApplicationFiled: March 6, 2019Publication date: September 5, 2019Applicant: Rensselaer Polytechnic InstituteInventors: Daniel David Harrison, Ge Wang
-
Patent number: 9952164Abstract: Various of the disclosed embodiments contemplate systems and methods that compensate for the limited dynamic range of certain X-Ray detector systems, such as CAT-Scan detector systems. In some embodiments, the system alternates between different photon emission flux values and then gives more consideration to an attenuation value associated with a more favorable detection flux. In this manner, different object densities may be accounted for and may be more properly imaged despite the particular characteristics of the X-Ray system.Type: GrantFiled: December 21, 2012Date of Patent: April 24, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Uwe Wiedmann, Daniel David Harrison
-
Apparatus and Method for Low Capacitance Packaging for Direct Conversion X-Ray or Gamma Ray Detector
Publication number: 20140348290Abstract: A direct-conversion X-ray detector includes one or more detector modules. The detector modules can include a substrate, one or more sensor tiles, and one or more photon-counting application specific integrated circuit (ASIC). The substrate has a dielectric constant of less than about 3.5 and is capable of lithographic conductor patterning with feature sizes of about 5 um or less. The one or more X-ray direct conversion sensor tiles have an array of one or more electrodes electrically coupled to a first surface of the substrate. The one or more ASICs are electrically coupled to the substrate and disposed laterally along the substrate with respect to the one or more direct conversion sensor tiles. Conductive lines are spaced along the substrate and are configured to electrically couple the one or more X-ray direct conversion sensor tiles to the one or more ASICs.Type: ApplicationFiled: May 23, 2013Publication date: November 27, 2014Applicant: General Electric CompanyInventors: Daniel David Harrison, James Rose, Abdelaziz Ikhlef, Vladimir Lobastov -
Patent number: 8824635Abstract: Detector modules for an imaging system and methods of manufacturing are provided. One detector module includes a substrate, a direct conversion sensor material coupled to the substrate and a flexible interconnect electrically coupled to the direct conversion sensor material and configured to provide readout of electrical signals generated by the direct conversion sensor material. The detector module also includes at least one illumination source for illuminating the direct conversion sensor material.Type: GrantFiled: October 27, 2011Date of Patent: September 2, 2014Assignee: General Electric CompanyInventors: John Eric Tkaczyk, Kevin Matthew Durocher, James Rose, Haochuan Jiang, Abdelaziz Ikhlef, Vladimir Lobastov, Daniel David Harrison
-
Publication number: 20140177786Abstract: Various of the disclosed embodiments contemplate systems and methods that compensate for the limited dynamic range of certain X-Ray detector systems, such as CAT-Scan detector systems. In some embodiments, the system alternates between different photon emission flux values and then gives more consideration to an attenuation value associated with a more favorable detection flux. In this manner, different object densities may be accounted for and may be more properly imaged despite the particular characteristics of the X-Ray system.Type: ApplicationFiled: December 21, 2012Publication date: June 26, 2014Applicant: General Electric CompanyInventors: Uwe Wiedmann, Daniel David Harrison
-
Publication number: 20130108019Abstract: Detector modules for an imaging system and methods of manufacturing are provided. One detector module includes a substrate, a direct conversion sensor material coupled to the substrate and a flexible interconnect electrically coupled to the direct conversion sensor material and configured to provide readout of electrical signals generated by the direct conversion sensor material. The detector module also includes at least one illumination source for illuminating the direct conversion sensor material.Type: ApplicationFiled: October 27, 2011Publication date: May 2, 2013Applicant: General Electric CompanyInventors: John Eric Tkaczyk, Kevin Matthew Durocher, James Rose, Haochuan Jiang, Abdelaziz Ikhlef, Vladimir Lobastov, Daniel David Harrison
-
Patent number: 8315352Abstract: An imaging system includes an x-ray source that emits a beam of x-rays toward an object, a detector that receives high frequency electromagnetic energy attenuated by the object, a data acquisition system (DAS) operably connected to the detector, and a computer operably connected to the DAS. The computer is programmed to compute detector coefficients based on a static low kVp measurement and a static high kVp measurement, capture incident spectra at high and low kVp during fast kVp switching, compute effective X-ray incident spectra at high and low kVp during fast kVp switching using the captured incident spectra, scan a water phantom and normalize the computed detector coefficients to water, adjust the computed effective X-ray incident spectra based on the normalized detector coefficients, compute basis material decomposition functions using the adjusted X-ray incident spectra, and generate one or more basis material density images using the computed basis material decomposition functions.Type: GrantFiled: September 16, 2010Date of Patent: November 20, 2012Assignee: General Electric CompanyInventors: Xiaoye Wu, Dan Xu, Naveen Chandra, Zhanyu Ge, Jiang Hsieh, Daniel David Harrison, Mary Sue Kulpins
-
Publication number: 20120069952Abstract: An imaging system includes an x-ray source that emits a beam of x-rays toward an object, a detector that receives high frequency electromagnetic energy attenuated by the object, a data acquisition system (DAS) operably connected to the detector, and a computer operably connected to the DAS. The computer is programmed to compute detector coefficients based on a static low kVp measurement and a static high kVp measurement, capture incident spectra at high and low kVp during fast kVp switching, compute effective X-ray incident spectra at high and low kVp during fast kVp switching using the captured incident spectra, scan a water phantom and normalize the computed detector coefficients to water, adjust the computed effective X-ray incident spectra based on the normalized detector coefficients, compute basis material decomposition functions using the adjusted X-ray incident spectra, and generate one or more basis material density images using the computed basis material decomposition functions.Type: ApplicationFiled: September 16, 2010Publication date: March 22, 2012Inventors: Xiaoye Wu, Dan Xu, Naveen Chandra, Zhanyu Ge, Jiang Hsieh, Daniel David Harrison, Mary Sue Kulpins
-
Patent number: 7885375Abstract: A technique is provided for imaging a field of view using an X-ray source comprising two or more emission points. The two or more emission points may be independently operated. Independent operation of the two or more emission points in performed in accordance with a list of commands that specifies the operation of the emission points. The list of commands, in one embodiment, is stored in a sequence buffer. In other embodiments, the list of commands is generated for a given usage, without being stored in a sequence buffer.Type: GrantFiled: October 20, 2008Date of Patent: February 8, 2011Assignee: General Electric CompanyInventors: Bruno Kristiaan Bernard De Man, Daniel David Harrison, Maria Iatrou, Brian Patrick Smyth, Zhye Yin, Samit Kumar Basu, Souma Sengupta, Peter Claudius Sanza
-
Publication number: 20090161816Abstract: A technique is provided for imaging a field of view using an X-ray source comprising two or more emission points. The two or more emission points may be independently operated. Independent operation of the two or more emission points in performed in accordance with a list of commands that specifies the operation of the emission points. The list of commands, in one embodiment, is stored in a sequence buffer. In other embodiments, the list of commands is generated for a given usage, without being stored in a sequence buffer.Type: ApplicationFiled: October 20, 2008Publication date: June 25, 2009Applicant: General Electric CompanyInventors: Bruno Kristiaan Bernard De Man, Daniel David Harrison, Maria Iatrou, Brian Patrick Smyth, Zhye Yin, Samit Kumar Basu, Souma Sengupta, Peter Claudius Sanza
-
Patent number: 7548223Abstract: A low cost and easy to assemble communicating utility meter provides selectable measurement, calibration, display, and communications means so as to be re-configurable based on several factors including; harmonic content of the power signal measured, LCD display alternatives, time of use measurements, bandpass filter settings, power quality measurements, PLC communications. alternatives, radio frequency communications alternatives, optical communications alternatives, and hard wire communications alternatives.Type: GrantFiled: August 6, 2004Date of Patent: June 16, 2009Assignee: General Electric CompanyInventors: Glen William Brooksby, Daniel David Harrison, Daniel Arthur Staver, Ertugrul Berkcan, Ralph Thomas Hoctor, Wolfgang Daum, Kenneth Brakeley Welles, II
-
Patent number: 7095354Abstract: A multi-channel analog to digital conversion circuit and methods thereon are provided. The multi-channel analog to digital conversion cirucit comprises a plurality of linearized channels wherein each channel comprises a multi-stage pipelined charge-to-digital converter and an integrating capacitor within each stage of the multi-stage converter wherein analog residue is processed by subsequent analog to digital converter stages. Each stage of respective linearized channels is configured for calculating gain and offset for each stage in the channel and such gain and offset is used in subsequent integration periods.Type: GrantFiled: August 12, 2005Date of Patent: August 22, 2006Assignee: General Electric CompanyInventors: Daniel David Harrison, Naresh Kesavan Rao, Shobhana Mani, Naveen Stephan Chandra, Oliver Richard Astley, Donald Thomas McGrath
-
Patent number: 6919835Abstract: An electronic integrator includes a compensation circuit which maintains an output of the integrator within a desired range. The compensation circuit includes a comparator which continuously compares the integrator output to a reference value, and a correction circuit which inputs a correction signal into the integrator when the reference value has been met or exceeded. The correction signal is preferably a fixed charge which lowers the voltage in an integrating capacitor by a predetermined amount, thereby ensuring that subsequent output of the integrator is less than the reference value. Through this compensation circuit, the integrator continuously operates without interruption, including without ever having to be reset. Further, the integrator is able to integrate both positive and negative input signals regardless of their magnitude.Type: GrantFiled: December 16, 2002Date of Patent: July 19, 2005Assignee: General Electric CompanyInventors: Kenneth Brakeley Welles, II, Daniel David Harrison, Ralph Thomas Hoctor
-
Patent number: 6816360Abstract: A low cost and easy to assemble communicating utility meter provides selectable measurement, calibration, display, and communications means so as to be re-configurable based on several factors including; harmonic content of the power signal measured, LCD display alternatives, time of use measurements, bandpass filter settings, power quality measurements, PLC communications alternatives, radio frequency communications alternatives, optical communications alternatives, and hard wire communications alternatives.Type: GrantFiled: April 5, 2001Date of Patent: November 9, 2004Assignee: General Electric CompanyInventors: Glen William Brooksby, Daniel David Harrison, Daniel Arthur Staver, Ertugrul Berkcan, Ralph Thomas Hoctor, Wolfgang Daum, Kenneth Brakeley Welles, II
-
Publication number: 20040113678Abstract: An electronic integrator includes a compensation circuit which maintains an output of the integrator within a desired range. The compensation circuit includes a comparator which continuously compares the integrator output to a reference value, and a correction circuit which inputs a correction signal into the integrator when the reference value has been met or exceeded. The correction signal is preferably a fixed charge which lowers the voltage in an integrating capacitor by a predetermined amount, thereby ensuring that subsequent output of the integrator is less than the reference value. Through this compensation circuit, the integrator continuously operates without interruption, including without ever having to be reset. Further, the integrator is able to integrate both positive and negative input signals regardless of their magnitude.Type: ApplicationFiled: December 16, 2002Publication date: June 17, 2004Applicant: GENERAL ELECTRIC COMPANYInventors: Kenneth Brakeley Welles, Daniel David Harrison, Ralph Thomas Hoctor
-
Patent number: RE40642Abstract: Location of an object to be tracked is determined by measuring, at a receiver situated at the object, the propagation time differences between the signals from a plurality of GPS satellites, each of which is received by the receiver situated at the object. The measured propagation time difference values are transmitted to a central station where the location of the object to be tracked is calculated based upon the propagation time differences of the signals transmitted from the satellites and data derived from a receiver apart from the object but also receiving signals from the satellites.Type: GrantFiled: May 12, 2000Date of Patent: February 17, 2009Assignee: General Electric CompanyInventors: Daniel David Harrison, Anatha Krishnan Pradeep, Glen William Brooksby, Stephen M. Hladik