Patents by Inventor Robert A. Lorenz
Robert A. Lorenz 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: 7313207Abstract: A method for detecting a positioning signal includes (a) correlating a segment of a received positioning signal with a reference signal of a selected code phase and frequency to obtain a correlation value, (b) if the correlation value is less than a predetermined minimum, assigning the correlation value to the predetermined minimum, and (c) accumulating the correlation value in a sum of correlation values obtained using other segments of the received positioning signal. In addition, the correlation value may be reduced by a predetermined value, which is preferably an expected mean value for a noise component in the segment of the received positioning signal.Type: GrantFiled: January 26, 2004Date of Patent: December 25, 2007Assignee: SiRF Technology, Inc.Inventors: Julien Basch, Andrew Chou, Robert Lorenz, Jesse Stone
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Publication number: 20070248155Abstract: Embodiments are directed to a wireless receiver system that utilizes a special structure of pilot symbols used for synchronization and channel estimation in transmission packets to measure noise power at the receiver. The periodicity of the pilot signal sequences is used to extract the noise power from the received signal. Such extraction is achieved by subtracting the received signals from two pilot slots which are separated by the known periodicity of the training sequence. This method relies on the fact that desired signal and system interference signals will cancel out after the subtraction process. Measuring the power of the residual signal after subtraction represents the estimate of the noise power. Several consecutive such residual signals can be first summed up before measuring the power to improve the estimate of the noise power at the receiver.Type: ApplicationFiled: April 19, 2007Publication date: October 25, 2007Inventors: Djordje Tujkovic, Ying Xia, Robert Lorenz, Sriram Mudulodu
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Publication number: 20070183522Abstract: Embodiments describe a method of measuring noise and interference within transceivers of an OFDM wireless transmission system, or similar communication system, including a number of receivers communicating with one or more base stations in cell or sector arrangements. The transmitter schedules a transmission burst for a non-existent user (receiver) using wireless transmission traffic. In an OFDM system, this corresponds to a certain set of subcarriers in the time/frequency arrangement. Thus, in the receive frame structure, the data and pilot subcarriers are guaranteed to be only noise and interference from adjacent sectors. The receiver can accurately measure the noise and interference without needing to cancel out the transmitted signal. Therefore, the system is assured that there is no desired signal as part of this measurement. The noise and interference measurement process can be appropriately scheduled so that it does not impact the overall throughput of the system.Type: ApplicationFiled: February 9, 2007Publication date: August 9, 2007Inventors: David Garrett, Robert Lorenz, Djordje Tujkovic
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Publication number: 20070097718Abstract: A method of estimating a temperature at a component of a device is provided. The temperature may be used to provide thermal load management of the device. In an exemplary embodiment, a switched mode power converter includes a power converter module and a switch that controls a switching cycle of the power converter module. A signal includes a bus voltage component and an oscillating signal component at least partially caused by switching of the switch. A switch instant of the switch can be isolated. A characteristic of the oscillating signal component of the signal can be detected. For example, a first peak voltage of the oscillating signal component can be detected after the switch instant. The temperature of the power converter module is estimated using the detected characteristic of the oscillating signal component. For example, the temperature can be estimated using the first peak voltage and best-fit curve parameters in solving a linear or a quadratic equation.Type: ApplicationFiled: October 27, 2005Publication date: May 3, 2007Inventors: Anusheel Nahar, Robert Lorenz
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Publication number: 20060286620Abstract: Glucose analysis instrument for diabetics, comprising a measuring device for determining glucose concentration values, a displaying device for displaying glucose concentration values, a signaling device for generating a reminder signal, and a control and evaluation device that comprises a processor and a data memory and is used to determine reminder times at which the signaling device is actuated. Event data are stored in the data memory, the event data containing information on events occurring in the life of a user of the glucose analysis instrument and on the time of occurrence of such events. The reminder times are determined by means of a reminder time determination algorithm taking into consideration event data from at least one previous day.Type: ApplicationFiled: June 19, 2006Publication date: December 21, 2006Inventors: Karl Werner, Peter Stephan, Robert Lorenz
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Publication number: 20060207603Abstract: An apparatus for use with a tracheal T-tube having transversely extending first and second passages that communicate with each other. The apparatus has a body with a generally tubular shape and a channel extending between distal and proximal ends. The body has cylindrical inner and outer walls that define a wall thickness. The body can be inserted into the first passage so that the distal end lies in the second passage. The apparatus has an inflatable device operatively secured to its distal end, and means for selectively inflating and deflating the inflatable device. The body also has a tube which defines a lumen extending between the ends and fluidly connecting the inflatable device with the means for selectively inflating and deflating the inflatable device.Type: ApplicationFiled: February 11, 2006Publication date: September 21, 2006Inventors: Robert Lorenz, Isaac Eliachar, Sudish Murthy
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Publication number: 20060182196Abstract: Systems and methods for optimizing transmission of a plurality of data streams on a multiple-input multiple-output channel are described. The systems and methods for optimizing reduce the multiple-input multiple-output channel for each transmission scheme to an equivalent single-input single-output channel for the transmission scheme and transmit the plurality of data streams based on the single-input single-output channel for the transmission scheme. Systems and methods for optimizing the transfer of data for any number of transmit and receive antennas are described.Type: ApplicationFiled: February 14, 2006Publication date: August 17, 2006Inventors: Vummintala Shashidhar, Vara Prasad, Ozgur Oyman, Erik Lindskog, Robert Lorenz, Kamlesh Rath
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Patent number: 7002514Abstract: A systematic method for acquiring positioning signals, such as global positioning system (GPS) signals, uses different signal detection algorithms at different stages of signal detection. For example, a method for detecting multiple positioning signals may include first detecting a first positioning signal using a robust but less sensitive signal detection method, such as non-coherent integration. Based on the signal parameter values that allow detection of the first positional signal, detecting a second positioning signal using a more sensitive method, such as coherent integration. In this manner, by capturing the strongest signal first using a robust method, signal detection parameter values common to positioning signals can be narrowed to allow subsequent signal acquisitions using a more sensitive—but computationally more intensive—method.Type: GrantFiled: January 15, 2004Date of Patent: February 21, 2006Assignee: SiRF Technology, Inc.Inventors: Julien Basch, Andrew Chou, Robert Lorenz, Jesse Stone
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Publication number: 20050088337Abstract: A system includes an antenna array consisting of a plurality of antenna elements, a plurality of receivers to process the signals from the antenna elements of the antenna array, and a combiner to combine receiver outputs so as to minimize the effect of undesirable signals such as multipath or interference while maintaining a nominal gain in the direction of the desired signal. The combiner takes into account variation or uncertainty in the assumed antenna array response, such as imprecise knowledge of the angle of arrival and uncertainty in the array manifold and multiplicative uncertainties due to gain variations between receivers, as well as non-uniformity in the response due to coupling between elements and coupling with the antenna structure. This system is applicable to antenna arrays with non-uniform responses, such as closely spaced arrays in which the coupling between elements is significant.Type: ApplicationFiled: November 22, 2004Publication date: April 28, 2005Applicant: THALES NORTH AMERICA, INC.Inventor: Robert Lorenz
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Publication number: 20050048581Abstract: A method and system for performing biochemical detection or analysis on micro- and nano-scale subcellular component within a single biological cell is provided. An integrated platform device and method to perform the biochemical analysis is also provided.Type: ApplicationFiled: August 25, 2004Publication date: March 3, 2005Inventors: Daniel Chiu, Bingyun Sun, James Shelby, John Edgar, Gavin Jeffries, Robert Lorenz, Jason Kuo, Mingyan He, Peter Allen, Sarah Mutch, Christopher Kuyper, Gina Fiorini, David Lim
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Publication number: 20040167713Abstract: A systematic method for acquiring positioning signals, such as global positioning system (GPS) signals, uses different signal detection algorithms at different stages of signal detection. For example, a method for detecting multiple positioning signals may include first detecting a first positioning signal using a robust but less sensitive signal detection method, such as non-coherent integration. Based on the signal parameter values that allow detection of the first positional signal, detecting a second positioning signal using a more sensitive method, such as coherent integration. In this manner, by capturing the strongest signal first using a robust method, signal detection parameter values common to positioning signals can be narrowed to allow subsequent signal acquisitions using a more sensitive—but computationally more intensive—method.Type: ApplicationFiled: January 15, 2004Publication date: August 26, 2004Inventors: Julien Basch, Andrew Chou, Robert Lorenz, Jesse Stone
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Publication number: 20040158593Abstract: A method for detecting a positioning signal includes (a) correlating a segment of a received positioning signal with a reference signal of a selected code phase and frequency to obtain a correlation value, (b) if the correlation value is less than a predetermined minimum, assigning the correlation value to the predetermined minimum, and (c) accumulating the correlation value in a sum of correlation values obtained using other segments of the received positioning signal. In addition, the correlation value may be reduced by a predetermined value, which is preferably an expected mean value for a noise component in the segment of the received positioning signal.Type: ApplicationFiled: January 26, 2004Publication date: August 12, 2004Inventors: Julien Basch, Andrew Chou, Robert Lorenz, Jesse Stone
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Patent number: 6627713Abstract: A process for producing polymer in a gas phase reactor by introducing a stream of monomer and gas into a polymerization zone while providing at least one liquid component in the polymerization zone.Type: GrantFiled: May 7, 2002Date of Patent: September 30, 2003Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Robert Joseph Noel Bernier, Robert Lorenz Boysen, Robert Cecil Brown, Mark Gregory Goode, John Henry Moorhouse, Robert Darrell Olson, Leonard Sebastian Scarola, Thomas Edward Spriggs, Duan-Fan Wang, Gary Harry Williams, Kevin Joseph Cann, Maria Angelica Apecetche, Natarajan Muruganandam, Gregory George Smith
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Publication number: 20020198335Abstract: A process for producing polymer in a gas phase reactor by introducing a stream of monomer and gas into a polymerization zone while providing at least one liquid component in the polymerization zone.Type: ApplicationFiled: May 7, 2002Publication date: December 26, 2002Inventors: Robert Joseph Noel Bernier, Robert Lorenz Boysen, Robert Cecil Brown, Mark Gregory Goode, John Henry Moorhouse, Robert Darrell Olson, Leonard Sebastian Scarola, Thomas Edward Spriggs, Duan-Fan Wang, Gary Harry Williams, Kevin Joseph Cann, Maria Angelica Apecetche, Natarajan Muruganandam, Gregory George Smith
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Patent number: 6384156Abstract: A process for producing polymer in a gas phase reactor by introducing a stream of monomer and gas into a polymerization zone while providing at least one liquid component in the polymerization zone.Type: GrantFiled: April 5, 2000Date of Patent: May 7, 2002Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Robert Joseph Noel Bernier, Robert Lorenz Boysen, Robert Cecil Brown, Mark Gregory Goode, John Henry Moorhouse, Robert Darrell Olson, Leonard Sebastian Scarola, Thomas Edward Spriggs, Duan-Fan Wang, Gary Harry Williams, Kevin Joseph Cann, Maria Angelica Apecetche, Natarajan Muruganandam, Gregory George Smith
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Patent number: 6096840Abstract: A process for producing polymer in a gas phase reactor by introducing a stream of monomer and gas into a polymerization zone while providing at least one liquid component in the polymerization zone.Type: GrantFiled: October 27, 1998Date of Patent: August 1, 2000Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Robert Joseph Noel Bernier, Robert Lorenz Boysen, Robert Cecil Brown, Mark Gregory Goode, John Henry Moorhouse, Robert Darrell Olson, Leonard Sebastian Scarola, Thomas Edward Spriggs, Duan-Fan Wang, Gary Harry Williams
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Patent number: 6077920Abstract: The present invention provides a process and apparatus for feeding powders such as fine, cohesive, or powdery particulate materials from a low pressure system to a high pressure system. In a preferred embodiment a process and apparatus of pressurizing and feeding carbon black fluff to a polymerization reactor is provided particularly a gas phase fluidized polymerization reactor to provide for a close-coupling of a carbon black reactor to a polymerization reactor.Type: GrantFiled: November 12, 1997Date of Patent: June 20, 2000Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Duan-Fan Wang, Robert Lorenz Boysen, Leonard Sebastian Scarola, Gary Harry Williams
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Patent number: 6036919Abstract: The present invention concerns a diagnostic test carrier for the determination of an analyte from whole blood with the aid of a reagent system contained in the carrier which includes a colour forming reagent with a test field which has a sample application side onto which the blood sample is applied and a detection side on which an optically detectable change takes place as a result of the reaction of analyte with the reagent system and which is constructed in such a way that erythrocytes present in the sample do not reach the detection side, which is characterized in that the test field comprises a transparent foil onto which a first and a second film layer are applied on top of one another and wherein the first layer located on the transparent foil scatters light considerably less in a wet state than the overlying second layer and wherein the side of the foil on which the first layer is applied which is opposite to the foil side is the detection side and the side of the second layer which is opposite to theType: GrantFiled: July 21, 1997Date of Patent: March 14, 2000Assignee: Roche Diagnostic GmbHInventors: Detlef Thym, Wofgang-Reinhold Knappe, Rudolf Pachl, Hartmut Merdes, Robert Lorenz
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Patent number: 5834571Abstract: A process for producing polymer in a gas phase reactor by introducing a stream of monomer and gas into a polymerization zone while providing at least one liquid component in the polymerization zone.Type: GrantFiled: August 2, 1995Date of Patent: November 10, 1998Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Robert Joseph Noel Bernier, Robert Lorenz Boysen, Robert Cecil Brown, Mark Gregory Goode, John Henry Moorhouse, Robert Darrell Olson, Leonard Sebastian Scarola, Thomas Edward Spriggs, Duan-Fan Wang, Gary Harry Williams
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Patent number: 5763541Abstract: The present invention provides a process and apparatus for feeding powders such as fine, cohesive, or powdery particulate materials from a low pressure system to a high pressure system. There is provided in a preferred embodiment a process and apparatus of pressurizing and feeding carbon black fluff to a polymerization reactor, particularly a gas phase fluidized polymerization reactor to provide for a close-coupling of a carbon black reactor to a polymerization reactor.Type: GrantFiled: December 4, 1996Date of Patent: June 9, 1998Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Duan-Fan Wang, Robert Lorenz Boysen, Leonard Sebastian Scarola, Gary Harry Williams