Patents by Inventor Michael J. Mende

Michael J. Mende 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: 10753961
    Abstract: Disclosed is a differential test probe tip. The probe tip comprises a socket of electrically conductive material at a proximate end of the probe tip. The socket includes a concavity to receive a signal pin. The probe tip also comprises a reference body of conductive material surrounding the socket. The probe tip further comprises a insulating spacer element of non-conductive material surrounding the reference body at the proximate end of the probe tip. The insulating spacer element includes a signal port to receive the signal pin into the socket. The insulating spacer element further includes a reference port to receive a reference pin and maintain the reference pin in electrical communication with a proximate end of the reference body.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: August 25, 2020
    Assignee: Tektronix, Inc.
    Inventors: Michael J. Mende, David T. Engquist, Richard A. Booman
  • Patent number: 10750336
    Abstract: A method, device, and system for managing a fleet of vehicles is disclosed. The method includes providing a telematics device for an electric vehicle of the fleet of vehicles, the telematics device being capable of obtaining data from the electric vehicle; using the telematics device to identify the electric vehicle based on the data obtained from the electric vehicle; providing a data definition set for the electric vehicle to the telematics device; and using the telematics device and the data definition set to determine whether the electric vehicle is in a vehicle mode based on the data obtained from the electric vehicle and the data definition set. The vehicle mode of the electric vehicle can be at least one of a charging mode, a driving mode, and a parked mode.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: August 18, 2020
    Assignee: Geotab Inc.
    Inventors: Christopher J. Mendes, Alexander K. Koch, Michael Giannikouris
  • Patent number: 10684311
    Abstract: The disclosure includes an electro-optical sensor. The electro-optical sensor includes a test signal input to receive a test signal from a device under test (DUT). A bias circuit is employed to generate a bias signal. The electro-optical sensor also includes a Mach-Zehnder Modulator (MZM) that employs an optical input, an optical output, and a bias input. The MZM is configured to receive an optical carrier signal via the optical input. The MZM also receives both the test signal and the bias signal on the bias input. The MZM modulates the test signal from the bias input onto the optical carrier to generate an optical signal while operating in a mode selected by the bias signal. The MZM also outputs the optical signal over the optical output.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: June 16, 2020
    Assignee: Tektronix, Inc.
    Inventors: Michael J. Mende, Richard A. Booman
  • Publication number: 20200132731
    Abstract: A test and measurement probe system (100,104), including an input (106) to receive an input signal, the input signal including a low frequency (LF) and/or direct current (DC) component and an alternating current (AC) component, an extractor circuit (110), such as an AC coupling circuit or a LF and/or DC rejection circuit, configured to receive the input signal and to separate the AC component and the LF and/or DC component from the input signal, a first output (118) to output the alternating current component to the test and measurement instrument, and a second output to output the direct current component to the test and measurement instrument. In some embodiments, the LF and/or DC component is digitized prior to being output by the second output.
    Type: Application
    Filed: July 13, 2018
    Publication date: April 30, 2020
    Inventor: Michael J. Mende
  • Patent number: 10585118
    Abstract: Disclosed is a test and measurement probe. The test and measurement probe includes a probe tip to connect to a Device Under Test (DUT). The probe tip includes a Resistor Capacitor (RC) probe tip network coupled to a test signal channel. The test and measurement probe also includes at least one variable resistor coupled to the test signal channel. The at least one variable resistor is set to provide an adjustable resistance to compensate for frequency variation in the RC probe tip network.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: March 10, 2020
    Assignee: Tektronix, Inc.
    Inventors: Michael J. Mende, Richard A. Booman, Wayne M. Wilburn
  • Publication number: 20200015048
    Abstract: A method, device, and system for managing a fleet of vehicles is disclosed. The method includes providing a telematics device for an electric vehicle of the fleet of vehicles, the telematics device being capable of obtaining data from the electric vehicle; using the telematics device to identify the electric vehicle based on the data obtained from the electric vehicle; providing a data definition set for the electric vehicle to the telematics device; and using the telematics device and the data definition set to determine whether the electric vehicle is in a vehicle mode based on the data obtained from the electric vehicle and the data definition set. The vehicle mode of the electric vehicle can be at least one of a charging mode, a driving mode, and a parked mode.
    Type: Application
    Filed: December 21, 2017
    Publication date: January 9, 2020
    Applicant: Geotab Inc.
    Inventors: Christopher J. Mendes, Alexander K. Koch, Michael Giannikouris
  • Patent number: 10514394
    Abstract: A probe or accessory for use with an electrical test and measurement instrument can include an input to receive an input signal from a device under test (DUT), a clamp control unit or oscilloscope to apply a clamping/limiting level to the input signal to generate an output signal, and/or a control unit output port to provide the clamped/limited output signal to an oscilloscope.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: December 24, 2019
    Assignee: Tektronix, Inc.
    Inventors: Michael J. Mende, Richard A. Booman, Wayne M. Wilburn
  • Publication number: 20190204356
    Abstract: A mechanism is included for receiving a phase modulated optical signal. The phase modulated signal is modulated by a remote electrical test signal at a sensor head. A reference optical signal is also received. A phase difference between the phase modulated optical signal and the reference optical signal is then determined. The phase difference is employed to recover the remote electrical test signal from the sensor head. The phase difference may be determined by employing a phase modulator in a controller that tracks a phase modulator in the sensor head. The phase difference may also be determined by comparison of the signals in the complex signal domain.
    Type: Application
    Filed: December 31, 2017
    Publication date: July 4, 2019
    Applicant: Tektronix, Inc.
    Inventors: Michael J. Mende, Daniel G. Knierim, Richard A. Booman
  • Patent number: 10302676
    Abstract: A flexible resistive tip cable assembly includes a probe Radio Frequency (RF) connector structured to receive a RF differential signal and a testing connection assembly. A coaxial cable is structured to conduct the RF differential signal between the probe RF connector and the testing connection assembly. The coaxial cable includes a cable for conducting the differential signal, and a plurality of magnetic elements positioned along a length of the cable and structured to isolate the differential signal from common mode interference. The magnetic elements are separated from adjacent magnetic elements by a gap with elastomeric elements is positioned in each gap to provide cable flexibility. The assembly may also include an Electrically Erasable Programmable Read Only Memory (EEPROM) loaded with an attenuation associated with the flexible resistive tip cable assembly for use in signal testing by a device coupled to the testing connection assembly.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: May 28, 2019
    Assignee: Tektronix, Inc.
    Inventors: Michael J. Mende, Gary W. Reed, James D. Pileggi, Karl A. Rinder, Richard A. Booman, Martin Van Pelt
  • Patent number: 10234501
    Abstract: A sensor head of a test and measurement instrument can include an input configured to receive an input signal from a device under test (DUT), an optical voltage sensor having signal input electrodes and control electrodes or one set of electrodes, wherein the input is connected to the signal input electrodes, and a bias control unit connected to the control electrodes and configured to reduce an error signal or the input signal bias control signal are electrically combined and applied to a single set of electrodes.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: March 19, 2019
    Assignee: Tektronix, Inc.
    Inventors: Michael J. Mende, Richard A. Booman
  • Patent number: 10225022
    Abstract: An electro-optical sensor comprises an optical input configured to receive an optical carrier via an upstream fiber. The electro-optical sensor also includes an optical modulator configured to modulate an electrical signal onto the optical carrier to create an optical signal. The electro-optical sensor further includes an optical output configured to transmit the optical signal via a downstream fiber. The electro-optical sensor employs a variation output configured to transmit variation data indicating variation in the received optical carrier to support compensation for corresponding variation in the optical signal.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: March 5, 2019
    Assignee: Tektronix, Inc.
    Inventors: Richard A. Booman, Michael J. Mende, Daniel G. Knierim
  • Publication number: 20180328961
    Abstract: Disclosed is a test and measurement probe. The test and measurement probe includes a probe tip to connect to a Device Under Test (DUT). The probe tip includes a Resistor Capacitor (RC) probe tip network coupled to a test signal channel. The test and measurement probe also includes at least one variable resistor coupled to the test signal channel. The at least one variable resistor is set to provide an adjustable resistance to compensate for frequency variation in the RC probe tip network.
    Type: Application
    Filed: September 29, 2017
    Publication date: November 15, 2018
    Applicant: Tektronix, Inc.
    Inventors: Michael J. Mende, Richard A. Booman, Wayne M. Wilburn
  • Publication number: 20180328964
    Abstract: The disclosure includes an electro-optical sensor. The electro-optical sensor includes a test signal input to receive a test signal from a device under test (DUT). A bias circuit is employed to generate a bias signal. The electro-optical sensor also includes a Mach-Zehnder Modulator (MZM) that employs an optical input, an optical output, and a bias input. The MZM is configured to receive an optical carrier signal via the optical input. The MZM also receives both the test signal and the bias signal on the bias input. The MZM modulates the test signal from the bias input onto the optical carrier to generate an optical signal while operating in a mode selected by the bias signal. The MZM also outputs the optical signal over the optical output.
    Type: Application
    Filed: April 9, 2018
    Publication date: November 15, 2018
    Applicant: Tektronix, Inc.
    Inventors: Michael J. Mende, Richard A. Booman
  • Publication number: 20180328962
    Abstract: Disclosed is a differential test probe tip. The probe tip comprises a socket of electrically conductive material at a proximate end of the probe tip. The socket includes a concavity to receive a signal pin. The probe tip also comprises a reference body of conductive material surrounding the socket. The probe tip further comprises a insulating spacer element of non-conductive material surrounding the reference body at the proximate end of the probe tip. The insulating spacer element includes a signal port to receive the signal pin into the socket. The insulating spacer element further includes a reference port to receive a reference pin and maintain the reference pin in electrical communication with a proximate end of the reference body.
    Type: Application
    Filed: August 25, 2017
    Publication date: November 15, 2018
    Inventors: Michael J. Mende, David T. Engquist, Richard A. Booman
  • Patent number: 9933456
    Abstract: A test and measurement system including an electro-optical accessory with an electro-optical sensor configured to output a modulated output signal, a device under test connected to the electro-optical accessory with a variable input signal, and a processor. The electro-optical accessory includes two sets of electrodes in which a sensitivity of the first set of electrodes is different from a sensitivity of the second set of electrodes. The processor in the test and measurement system is configured to modify the modulated output signal from the electro-optical voltage accessory to reconstruct the variable input signal of the electro-optical voltage accessory that exceeds the linear input range of the optical sensor.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: April 3, 2018
    Assignee: Tektronix, Inc.
    Inventors: Michael J. Mende, Richard A. Booman
  • Publication number: 20170353248
    Abstract: An electro-optical sensor comprises an optical input configured to receive an optical carrier via an upstream fiber. The electro-optical sensor also includes an optical modulator configured to modulate an electrical signal onto the optical carrier to create an optical signal. The electro-optical sensor further includes an optical output configured to transmit the optical signal via a downstream fiber. The electro-optical sensor employs a variation output configured to transmit variation data indicating variation in the received optical carrier to support compensation for corresponding variation in the optical signal.
    Type: Application
    Filed: December 29, 2016
    Publication date: December 7, 2017
    Inventors: Richard A. Booman, Michael J. Mende, Daniel G. Knierim
  • Patent number: 9804473
    Abstract: An electro-optic modulator of a test and measurement system. The electro-optic modulator includes a first electrode, a second electrode with identical electrical characteristics as the first electrode and an optical waveguide between the first electrode and the second electrode. The first electrode and the second electrode present a balanced load to a device under test.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: October 31, 2017
    Assignee: TEKTRONIX, INC.
    Inventors: Michael J. Mende, Richard A. Booman
  • Patent number: 9793661
    Abstract: A differential pin to RF adaptor includes a center conductor contact with an RF connector on one end and a signal contact on the other end. An insulating sleeve surrounds the central contact. A reference contact surrounds the insulating sleeve. The signal pin of the differential pair interfaces with the center conductor contact of the RF connector. The adaptor is structured to slide down over a pair of pins/leads so that the reference contact abuts a circuit board attached to the pins. The pins/leads are shielded all the way to the circuit board, which shields/isolates the pins from common mode and other types of interference. The adaptor maintains the shape of the signal pin and the reference pin during testing. The adaptor maintains a fixed impedance of the pins, which reduces or eliminates uncontrolled impedance and hence preserves system frequency response and reduces/eliminates erroneous ripple currents.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: October 17, 2017
    Assignee: Tektronix, Inc.
    Inventors: Michael J. Mende, Gary W. Reed, James D. Pileggi, Karl A. Rinder, Richard A. Booman
  • Publication number: 20170271826
    Abstract: A flexible resistive tip cable assembly includes a probe Radio Frequency (RF) connector structured to receive a RF differential signal and a testing connection assembly. A coaxial cable is structured to conduct the RF differential signal between the probe RF connector and the testing connection assembly. The coaxial cable includes a cable for conducting the differential signal, and a plurality of magnetic elements positioned along a length of the cable and structured to isolate the differential signal from common mode interference. The magnetic elements are separated from adjacent magnetic elements by a gap with elastomeric elements is positioned in each gap to provide cable flexibility. The assembly may also include an Electrically Erasable Programmable Read Only Memory (EEPROM) loaded with an attenuation associated with the flexible resistive tip cable assembly for use in signal testing by a device coupled to the testing connection assembly.
    Type: Application
    Filed: September 8, 2016
    Publication date: September 21, 2017
    Inventors: Michael J. Mende, Gary W. Reed, James D. Pileggi, Karl A. Rinder, Richard A. Booman, Martin Van Pelt
  • Publication number: 20170271828
    Abstract: A differential pin to RF adaptor includes a center conductor contact with an RF connector on one end and a signal contact on the other end. An insulating sleeve surrounds the central contact. A reference contact surrounds the insulating sleeve. The signal pin of the differential pair interfaces with the center conductor contact of the RF connector. The adaptor is structured to slide down over a pair of pins/leads so that the reference contact abuts a circuit board attached to the pins. The pins/leads are shielded all the way to the circuit board, which shields/isolates the pins from common mode and other types of interference. The adaptor maintains the shape of the signal pin and the reference pin during testing. The adaptor maintains a fixed impedance of the pins, which reduces or eliminates uncontrolled impedance and hence preserves system frequency response and reduces/eliminates erroneous ripple currents.
    Type: Application
    Filed: September 6, 2016
    Publication date: September 21, 2017
    Inventors: Michael J. Mende, Gary W. Reed, James D. Pileggi, Karl A. Rinder, Richard A. Booman