Patents by Inventor Steven D. Roach

Steven D. Roach 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: 10586193
    Abstract: A system for mobile assessments is provided. The system includes a processing device and a memory device. The memory device stores instructions that when executed by the processing device may result in receiving an assessment request associated with physical assets at a remote location relative to an initiator system of the assessment request. An assessment type may be determined based on the assessment request. One or more interactive assessment forms can be retrieved from a database based on the assessment type. The interactive assessment forms may be populated with assessment data based on one or more observed conditions of the physical assets at the remote location. Image data associated with the observed conditions can be captured. The image data can be linked with the assessment data to establish relationship metadata. The image data, the assessment data, and the relationship metadata may be transmitted for storage in the database.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: March 10, 2020
    Assignee: THE TRAVELERS INDEMNITY COMPANY
    Inventors: Steven Yanicke, John Grandpre, Steven D. Roach, William DeLeo
  • Patent number: 9816840
    Abstract: A transconductor converts voltage on an inductive sensor to a proportional current using two “coupling” capacitors. Responsive to movement of an electrically conductive target from the null position a resonant current is formed between the two sensor coils. A single differential transistor pair switched by periodic drive signals commutes the net alternating current at the single input to direct current.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: November 14, 2017
    Assignee: Blue Line Engineering
    Inventors: Steven D. Roach, Gregory H. Ames, Philip N. Zercher
  • Publication number: 20170234704
    Abstract: A transconductor converts voltage on an inductive sensor to a proportional current using two “coupling” capacitors. Responsive to movement of an electrically conductive target from the null position a resonant current is formed between the two sensor coils. A single differential transistor pair switched by periodic drive signals commutes the net alternating current at the single input to direct current.
    Type: Application
    Filed: August 31, 2016
    Publication date: August 17, 2017
    Applicant: Blue Line Engineering Company
    Inventors: Steven D. Roach, Gregory H. Ames, Philip N. Zercher
  • Patent number: 9459369
    Abstract: A transconductor converts voltage on an inductive sensor to a proportional current using two “coupling” capacitors. Responsive to movement of an electrically conductive target from the null position a resonant current is formed between the two sensor coils. A single differential transistor pair switched by periodic drive signals commutes the net alternating current at the single input to direct current.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: October 4, 2016
    Assignee: Blue Line Engineering Company
    Inventors: Steven D. Roach, Gregory H. Ames, Philip N. Zercher
  • Publication number: 20160180265
    Abstract: A system for mobile assessments is provided. The system includes a processing device and a memory device. The memory device stores instructions that when executed by the processing device may result in receiving an assessment request associated with physical assets at a remote location relative to an initiator system of the assessment request. An assessment type may be determined based on the assessment request. One or more interactive assessment forms can be retrieved from a database based on the assessment type. The interactive assessment forms may be populated with assessment data based on one or more observed conditions of the physical assets at the remote location. Image data associated with the observed conditions can be captured. The image data can be linked with the assessment data to establish relationship metadata. The image data, the assessment data, and the relationship metadata may be transmitted for storage in the database.
    Type: Application
    Filed: December 23, 2014
    Publication date: June 23, 2016
    Inventors: Steven Yanicke, John Grandpre, Steven D. Roach, William DeLeo
  • Publication number: 20140253107
    Abstract: A transconductor converts voltage on an inductive sensor to a proportional current using two “coupling” capacitors. Responsive to movement of an electrically conductive target from the null position a resonant current is formed between the two sensor coils. A single differential transistor pair switched by periodic drive signals commutes the net alternating current at the single input to direct current.
    Type: Application
    Filed: October 4, 2013
    Publication date: September 11, 2014
    Inventors: Steven D. Roach, Gregory H. Ames, Philip N. Zercher
  • Patent number: 8542005
    Abstract: An apparatus includes a first oscilloscope having multiple channels, and a second oscilloscope having multiple channels. The first oscilloscope is configured to operate as a master or as a slave. The first oscilloscope operates as the master by using a first trigger signal and a first clock signal that are native to the first oscilloscope, and the first oscilloscope operates as the slave by using a second trigger signal and a second clock signal that are native to the second oscilloscope. The second oscilloscope is configured to operate as the master or as the slave. The second oscilloscope operates as the master by using the second trigger signal and the second clock signal, and the second oscilloscope operates as the slave by using the first trigger signal and the first clock signal.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: September 24, 2013
    Assignee: Teradyne, Inc.
    Inventors: Hamid Kharrati, Steven D. Roach, Joseph Sascha Willis
  • Patent number: 8531176
    Abstract: Circuitry includes a pre-amplifier having a differential output, where the differential output corresponds to a common mode voltage; a multiplexer including sets of transistors, each of which has a control input; a comparator including input terminals, a first terminal of the input terminals to receive a signal that is based on an output of the multiplexer, and a second terminal of the input terminals to receive a threshold voltage; a compensation circuit to produce a divided voltage that varies in accordance with variations in the common mode voltage; and an amplifier to receive a predefined voltage and to use the divided voltage to affect the predefined voltage to produce the threshold voltage for the comparator. Signals in the differential output of the pre-amplifier are applicable to corresponding control inputs in the sets of transistors.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: September 10, 2013
    Assignee: Teradyne, Inc.
    Inventor: Steven D. Roach
  • Patent number: 8502522
    Abstract: Circuitry includes a comparator to compare an input analog signal to a threshold and to output a signal that is based on the comparison; a first circuit path to receive the signal and to detect a characteristic of the signal, where the first circuit path is configured to support triggering at a first frequency; a second circuit path to receive the signal and to detect the characteristic of the signal, where the second circuit path is configured to support triggering at a second frequency that is lower than the first frequency; and a selector to select an output of the first circuit path or an output of the second circuit path.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: August 6, 2013
    Assignee: Teradyne, Inc.
    Inventors: Hamid Kharrati, Steven D. Roach, Joseph Sascha Willis
  • Patent number: 8098181
    Abstract: An attenuator circuit includes a high-frequency circuit path to produce an attenuated first signal; a low-frequency circuit path to produce an attenuated second signal, where the attenuated first signal has a higher frequency than the attenuated second signal; and a transistor that includes a control input. The control input is configured to receive the attenuated second signal to bias the transistor for passage of the attenuated first signal and the attenuated second signal.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: January 17, 2012
    Assignee: Teradyne, Inc.
    Inventor: Steven D. Roach
  • Publication number: 20110267037
    Abstract: Circuitry includes a comparator to compare an input analog signal to a threshold and to output a signal that is based on the comparison; a first circuit path to receive the signal and to detect a characteristic of the signal, where the first circuit path is configured to support triggering at a first frequency; a second circuit path to receive the signal and to detect the characteristic of the signal, where the second circuit path is configured to support triggering at a second frequency that is lower than the first frequency; and a selector to select an output of the first circuit path or an output of the second circuit path.
    Type: Application
    Filed: April 28, 2010
    Publication date: November 3, 2011
    Inventors: Hamid Kharrati, Steven D. Roach, Joseph Sascha Wills
  • Publication number: 20110267036
    Abstract: An apparatus includes a first oscilloscope having multiple channels, and a second oscilloscope having multiple channels. The first oscilloscope is configured to operate as a master or as a slave. The first oscilloscope operates as the master by using a first trigger signal and a first clock signal that are native to the first oscilloscope, and the first oscilloscope operates as the slave by using a second trigger signal and a second clock signal that are native to the second oscilloscope. The second oscilloscope is configured to operate as the master or as the slave. The second oscilloscope operates as the master by using the second trigger signal and the second clock signal, and the second oscilloscope operates as the slave by using the first trigger signal and the first clock signal.
    Type: Application
    Filed: April 28, 2010
    Publication date: November 3, 2011
    Inventors: Hamid Kharrati, Steven D. Roach, Joseph Sascha Willis
  • Publication number: 20110267214
    Abstract: An attenuator circuit includes a high-frequency circuit path to produce an attenuated first signal; a low-frequency circuit path to produce an attenuated second signal, where the attenuated first signal has a higher frequency than the attenuated second signal; and a transistor that includes a control input. The control input is configured to receive the attenuated second signal to bias the transistor for passage of the attenuated first signal and the attenuated second signal.
    Type: Application
    Filed: April 28, 2010
    Publication date: November 3, 2011
    Inventor: Steven D. Roach
  • Publication number: 20110267030
    Abstract: Circuitry includes a pre-amplifier having a differential output, where the differential output corresponds to a common mode voltage; a multiplexer including sets of transistors, each of which has a control input; a comparator including input terminals, a first terminal of the input terminals to receive a signal that is based on an output of the multiplexer, and a second terminal of the input terminals to receive a threshold voltage; a compensation circuit to produce a divided voltage that varies in accordance with variations in the common mode voltage; and an amplifier to receive a predefined voltage and to use the divided voltage to affect the predefined voltage to produce the threshold voltage for the comparator. Signals in the differential output of the pre-amplifier are applicable to corresponding control inputs in the sets of transistors.
    Type: Application
    Filed: April 28, 2010
    Publication date: November 3, 2011
    Inventor: Steven D. Roach
  • Patent number: 7339437
    Abstract: Circuitry and methods for improved amplifiers with large bandwidth and constant gain are provided. The combination of a synthetic inductive drain load and a bridged-T matching network provide amplifiers that can drive a substantial capacitive load with the above mentioned improvements over prior amplifiers. Additionally, circuits presented allow for improved rise time and insensitivity to temperature variations.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: March 4, 2008
    Assignee: Linear Technology Corp.
    Inventor: Steven D. Roach
  • Patent number: 7312581
    Abstract: Light emitting elements with preselected or adjustable impedance characteristics are provided. Embodiments using a preselected impedance characteristic obtain significant performance benefits compared to the prior art. Embodiments having an adjustable impedance may alter the impedance associated with the light emitting component such that it has a substantially constant resistive or reactive impedance that improves certain performance attributes. This solution virtually eliminates the need for external compensation components and relieves the burden of impedance matching and circuit specialization from the driver circuit.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: December 25, 2007
    Assignee: Linear Technology Corp.
    Inventor: Steven D Roach
  • Patent number: 7246016
    Abstract: Circuitry and methods for obtaining accurate measurements of current supplied by an integrated circuit are provided. Current calculations are performed using information from a precision termination resistor and from the ratio relationship of two on-chip resistors. The invention provides a way to obtain accurate current measurements without the use of component trimming.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: July 17, 2007
    Assignee: Linear Technology Corporation
    Inventor: Steven D Roach
  • Patent number: 7202748
    Abstract: Circuitry and methods for improved amplifiers with large bandwidth and constant gain are provided. The combination of a synthetic inductive drain load and a bridged-T matching network provide amplifiers that can drive a substantial capacitive load with the above mentioned improvements over prior amplifiers. Additionally, circuits presented allow for improved rise time and insensitivity to temperature variations.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: April 10, 2007
    Assignee: Linear Technology Corporation
    Inventor: Steven D. Roach
  • Patent number: 7123097
    Abstract: Circuitry and methods for improved amplifiers with large bandwidth and constant gain are provided. The combination of a synthetic inductive drain load and a bridged-T matching network provide amplifiers that can drive a substantial capacitive load with the above mentioned improvements over prior amplifiers. Additionally, circuits presented allow for improved rise time and insensitivity to temperature variations.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: October 17, 2006
    Assignee: Linear Technology Corporation
    Inventor: Steven D. Roach
  • Patent number: 7103487
    Abstract: Circuitry and methods for obtaining accurate measurements of current supplied by an integrated circuit are provided. Current calculations are performed using information from a precision termination resistor and from the ratio relationship of two on-chip resistors. The invention provides a way to obtain accurate current measurements without the use of component trimming.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: September 5, 2006
    Assignee: Linear Technology Corporation
    Inventor: Steven D. Roach