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).
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Patent number: 10586193Abstract: 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: GrantFiled: December 23, 2014Date of Patent: March 10, 2020Assignee: THE TRAVELERS INDEMNITY COMPANYInventors: Steven Yanicke, John Grandpre, Steven D. Roach, William DeLeo
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Patent number: 9816840Abstract: 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: GrantFiled: August 31, 2016Date of Patent: November 14, 2017Assignee: Blue Line EngineeringInventors: Steven D. Roach, Gregory H. Ames, Philip N. Zercher
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Publication number: 20170234704Abstract: 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: ApplicationFiled: August 31, 2016Publication date: August 17, 2017Applicant: Blue Line Engineering CompanyInventors: Steven D. Roach, Gregory H. Ames, Philip N. Zercher
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Patent number: 9459369Abstract: 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: GrantFiled: October 4, 2013Date of Patent: October 4, 2016Assignee: Blue Line Engineering CompanyInventors: Steven D. Roach, Gregory H. Ames, Philip N. Zercher
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Publication number: 20160180265Abstract: 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: ApplicationFiled: December 23, 2014Publication date: June 23, 2016Inventors: Steven Yanicke, John Grandpre, Steven D. Roach, William DeLeo
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Publication number: 20140253107Abstract: 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: ApplicationFiled: October 4, 2013Publication date: September 11, 2014Inventors: Steven D. Roach, Gregory H. Ames, Philip N. Zercher
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Patent number: 8542005Abstract: 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: GrantFiled: April 28, 2010Date of Patent: September 24, 2013Assignee: Teradyne, Inc.Inventors: Hamid Kharrati, Steven D. Roach, Joseph Sascha Willis
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Patent number: 8531176Abstract: 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: GrantFiled: April 28, 2010Date of Patent: September 10, 2013Assignee: Teradyne, Inc.Inventor: Steven D. Roach
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Patent number: 8502522Abstract: 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: GrantFiled: April 28, 2010Date of Patent: August 6, 2013Assignee: Teradyne, Inc.Inventors: Hamid Kharrati, Steven D. Roach, Joseph Sascha Willis
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Patent number: 8098181Abstract: 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: GrantFiled: April 28, 2010Date of Patent: January 17, 2012Assignee: Teradyne, Inc.Inventor: Steven D. Roach
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Publication number: 20110267037Abstract: 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: ApplicationFiled: April 28, 2010Publication date: November 3, 2011Inventors: Hamid Kharrati, Steven D. Roach, Joseph Sascha Wills
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Publication number: 20110267036Abstract: 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: ApplicationFiled: April 28, 2010Publication date: November 3, 2011Inventors: Hamid Kharrati, Steven D. Roach, Joseph Sascha Willis
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Publication number: 20110267214Abstract: 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: ApplicationFiled: April 28, 2010Publication date: November 3, 2011Inventor: Steven D. Roach
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Publication number: 20110267030Abstract: 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: ApplicationFiled: April 28, 2010Publication date: November 3, 2011Inventor: Steven D. Roach
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Patent number: 7339437Abstract: 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: GrantFiled: March 22, 2007Date of Patent: March 4, 2008Assignee: Linear Technology Corp.Inventor: Steven D. Roach
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Patent number: 7312581Abstract: 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: GrantFiled: July 6, 2005Date of Patent: December 25, 2007Assignee: Linear Technology Corp.Inventor: Steven D Roach
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Patent number: 7246016Abstract: 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: GrantFiled: July 18, 2006Date of Patent: July 17, 2007Assignee: Linear Technology CorporationInventor: Steven D Roach
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Patent number: 7202748Abstract: 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: GrantFiled: September 8, 2006Date of Patent: April 10, 2007Assignee: Linear Technology CorporationInventor: Steven D. Roach
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Patent number: 7123097Abstract: 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: GrantFiled: July 14, 2005Date of Patent: October 17, 2006Assignee: Linear Technology CorporationInventor: Steven D. Roach
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Patent number: 7103487Abstract: 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: GrantFiled: July 6, 2005Date of Patent: September 5, 2006Assignee: Linear Technology CorporationInventor: Steven D. Roach