Patents by Inventor Peter Pupalaikis
Peter Pupalaikis 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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Publication number: 20140098848Abstract: A method and apparatus are provided for calculating s-parameters of a device under test from step waveforms acquired by a time domain network analyzer.Type: ApplicationFiled: December 16, 2013Publication date: April 10, 2014Applicant: Teledyne LeCroy, Inc.Inventors: Peter Pupalaikis, Kaviyesh Doshi, Anirudh Sureka
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Patent number: 8386208Abstract: A method and apparatus for determining a trigger in a test and measurement apparatus are provided. The method includes the steps of indicating one or more anomalies to be found, loading a first trigger configuration to the test and measurement apparatus and determining for a first predetermined time period whether an input signal generates a trigger related to one or more of the one or more anomalies. A second trigger configuration is loaded to the test and measurement apparatus upon the conclusion of the first predetermined time, and for a second predetermined time it is determined whether the input signal generates a trigger related to one or more of the one or more anomalies.Type: GrantFiled: June 27, 2008Date of Patent: February 26, 2013Assignee: Teledyne LeCroy, Inc.Inventors: Anthony Cake, Peter Pupalaikis, David Graef, William Driver, Michael Hertz, Laxmikant Joshi
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Publication number: 20120173188Abstract: A method and apparatus for determining a trigger in a test and measurement apparatus are provided. The method comprises the steps of loading a first trigger configuration to a first trigger element of the test and measurement apparatus and loading a second trigger configuration to a second trigger element of the test and measurement apparatus so that these trigger elements operate substantially simultaneously, It is then determined whether the input signal generates a trigger in accordance with the one or more trigger configurations.Type: ApplicationFiled: March 6, 2012Publication date: July 5, 2012Applicant: LeCroy CorporationInventors: Anthony Cake, Peter Pupalaikis, David Graef, William Driver, Michael Hertz, Laxmikant Joshi
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Publication number: 20090281759Abstract: A method and apparatus for determining a trigger in a test and measurement apparatus are provided. The method comprises the steps of loading a first trigger configuration to a first trigger element of the test and measurement apparatus and loading a second trigger configuration to a second trigger element of the test and measurement apparatus so that these trigger elements operate substantially simultaneously. It is then determined whether the input signal generates a trigger in accordance with the one or more trigger configurations.Type: ApplicationFiled: July 29, 2008Publication date: November 12, 2009Applicant: LeCroy CorporationInventors: Anthony Cake, Peter Pupalaikis, David Graef, William Driver, Michael Hertz, Laxmikant Joshi
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Publication number: 20090281748Abstract: A method and apparatus for determining a trigger in a test and measurement apparatus are provided. The method comprises the steps of indicating one or more anomalies to be found, loading a first trigger configuration to the test and measurement apparatus and determining for a first predetermined time whether an input signal generates a trigger related to one or more of the one or more anomalies. A second trigger configuration is loaded to the test and measurement apparatus upon the conclusion of the first predetermined time, and for a second predetermined time it is determined whether the input signal generates a trigger related to one or more of the one or more anomalies.Type: ApplicationFiled: June 27, 2008Publication date: November 12, 2009Applicant: LeCroy CorporationInventors: Anthony Cake, Peter Pupalaikis, David Graef, William Driver, Michael Hertz, Laxmikant Joshi
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Publication number: 20080059092Abstract: A method and apparatus for generating one or more transfer functions for converting waveforms. The method comprises the steps of determining a system description, representative of a circuit, comprising a plurality of system components, each system component comprising at least one component characteristic, the system description further comprising at least one measurement node and at least one output node, each of the at least one measurement nodes representative of a waveform digitizing location in the circuit. One or more transfer functions are determined for converting a waveform from one or more of the at least one measurement nodes to a waveform at one or more of the at least one output nodes. The generated transfer functions are then stored in a computer readable medium.Type: ApplicationFiled: August 1, 2007Publication date: March 6, 2008Applicant: LeCroy CorporationInventors: Peter Pupalaikis, Lawrence Jacobs, Stephen Sekel
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Publication number: 20070185669Abstract: A method for improving bandwidth of an oscilloscope involves, in preferred embodiments, the use of frequency up-conversion and down-conversion techniques. In an illustrative embodiment the technique involves separating an input signal into a high frequency content and a low frequency content, down-converting the high frequency content in the analog domain so that it may be processed by the oscilloscope's analog front end, digitizing the low frequency content and the down-converted high frequency content, and forming a digital representation of the received analog signal from the digitized low frequency content and high frequency content.Type: ApplicationFiled: March 29, 2007Publication date: August 9, 2007Applicant: LeCroy CorporationInventors: Peter Pupalaikis, David Graef
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Publication number: 20070112532Abstract: A signal processing system may compensate for the relative phase difference between multiple frequency bands so that the combination of the bands is constructive throughout a substantial portion of the band overlap or crossover region. In one embodiment, a signal combining system may include a comparator for determining a relative phase difference between the two signals within a predefined crossover region, a phase adjusting element for adjusting a phase of one of the two signals; and a combiner for combining the phase-adjusted signal and the other of the two signals.Type: ApplicationFiled: November 16, 2005Publication date: May 17, 2007Applicant: LeCroy CorporationInventor: Peter Pupalaikis
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Publication number: 20070027658Abstract: A method and apparatus for digitizing a data signal, the method comprising the steps of receiving an input analog data signal, splitting the received input analog data signal into a plurality of split signals, and mixing at least one of the split signals with a predetermined periodic function with a predetermined frequency. The split signals are then digitized and combined mathematically to form a single output data stream that is a substantially correct representation of the original input signal.Type: ApplicationFiled: September 22, 2006Publication date: February 1, 2007Inventors: Peter Pupalaikis, David Graef
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Publication number: 20060195502Abstract: A method, computer program, and apparatus for compensating for group delay. The method comprises the steps of generating a raw step response of a system, differentiating the raw step response to generate an impulse response of the system, windowing the impulse response and taking a Fast Fourier Transform (FFT) of the windowed impulse response to generate a frequency response of the system. A phase response of the system is then calculated from the frequency response, and an IFFT Group Delay filter is defined in accordance with the phase response of the system. Finally, the IFFT Group Delay filter is applied to the raw step response.Type: ApplicationFiled: November 1, 2005Publication date: August 31, 2006Applicant: LeCroy CorporationInventors: Anirudh Sureka, Peter Pupalaikis
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Publication number: 20060195301Abstract: An artifact signal correction system may include a mixing component to generate a waveform corresponding to an artifact such as an error tone, whereupon that waveform may be combined with the input waveform to substantially eliminate the artifact. In preferred embodiments, a method and apparatus for reducing spurious tones in systems of mismatched interleaved digitizers due to interleave error is provided. In various embodiments the method may comprise reversing the frequency content of an input signal, converting the reversed signal into interleave artifact content, delaying the input signal along a parallel path, and then subtracting the interleave content from the delayed input signal.Type: ApplicationFiled: November 16, 2005Publication date: August 31, 2006Applicant: LeCroy CorporationInventors: James Mueller, Peter Pupalaikis
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Publication number: 20060161401Abstract: A method and apparatus for digitizing a data signal, the method comprising the steps of receiving an input analog data signal, splitting the received input analog data signal into a plurality of split signals, and mixing at least one of the split signals with a predetermined periodic function with a predetermined frequency. The split signals are then digitized and combined mathematically to form a single output data stream that is a substantially correct representation of the original input signal.Type: ApplicationFiled: November 22, 2005Publication date: July 20, 2006Inventors: Peter Pupalaikis, David Graef
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Publication number: 20060080065Abstract: A method for improving bandwidth of an oscilloscope involves, in preferred embodiments, use of frequency up-conversion and down-conversion techniques to achieve a system bandwidth that significantly exceeds the bandwidth attainable through interleaving alone. In an illustrative embodiment the technique involves separating an input signal into a high frequency content and a low frequency content, down-converting the high frequency content in the analog domain so that it may be processed by the oscilloscope's analog front end, digitizing the low frequency content and the down-converted high frequency content, and forming a digital representation of the received analog signal from the digitized low frequency content and high frequency content. In this manner preferred embodiments achieve the significant advantage that bandwidth may be enhanced beyond the limits associated with interleaving and the state of the art in amplifier and ADC design.Type: ApplicationFiled: November 17, 2005Publication date: April 13, 2006Applicant: LeCroy CorporationInventors: Peter Pupalaikis, David Graef
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Publication number: 20060074606Abstract: A method and apparatus for digitizing a signal. The method comprises the steps of receiving an input analog signal, splitting the received input analog signal into a plurality of signals and frequency converting at least one of the signals in accordance with a predetermined periodic function having a predetermined frequency. The signals are then digitized and combined mathematically to form a single output stream that is a substantially correct representation of the original input analog signal.Type: ApplicationFiled: November 9, 2005Publication date: April 6, 2006Inventors: Peter Pupalaikis, David Graef