Patents by Inventor Dean Davis
Dean Davis 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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RECOMMENDING CHANGES IN THE DESIGN OF AN INTEGRATED CIRCUIT USING A RULES-BASED ANALYSIS OF FAILURES
Publication number: 20240119205Abstract: A computer-implemented method, system and computer program product for recommending design changes in designing a digital integrated circuit. An analysis of the digital integrated circuit being designed is performed, where the result of such an analysis involves violations being identified and stored. A stored violation, such as a cross-domain, cross-hierarchy and multi-cycle violation, may then be analyzed to identify a root cause of the violation using a rule. Such a rule may be used for triaging various failures in the cross-domain, cross-hierarchy and/or multi-cycle violation of the digital integrated circuit. A design change in the design of the digital integrated circuit may then be recommended based on the identified root cause of the violation. In this manner, the root cause of failures are effectively identified in the design of digital integrated circuits using an offline analysis of cross-domain, cross-hierarchy and/or multi-cycle violations using a rules-based approach.Type: ApplicationFiled: October 11, 2022Publication date: April 11, 2024Inventors: SheshaShayee K Raghunathan, Charles Gates, Kerim Kalafala, Steven Joseph Kurtz, Morgan D. Davis, Debra Dean, Chris Cavitt, Chaitra M Bhat, Richard William Taggart -
Patent number: 11524672Abstract: An electric motor drive retrofit system (EMDRS) comprises a power system, an energy storage system (ESS), a cooling system, a vehicle control unit (VCU), and a user interface device (UID). A non-hybrid combustion engine drive vehicle with tight space constraints is retrofittable with the EMDRS to provide hybrid drive functionality. EMDRS includes a motor generator unit (MGU) coupled to a motor control unit that transfers charge between MGU and ESS. During retrofit, the MGU is coupled between a transmission and an internal combustion engine (ICE) of the vehicle without extending a powertrain length by more than five inches. VCU does not interfere with any pre-existing vehicle electronics. The VCU controls the EMDRS to add torque (discharging ESS) or to remove torque (charging the ESS) based on a selected operating mode and vehicle sensor information (for example, brake and throttle pressure). Operating modes are selected by driver via the UID.Type: GrantFiled: September 26, 2019Date of Patent: December 13, 2022Assignee: Elephant Racing, LLCInventors: Charles Edward Moreland, William Dean Davis
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Publication number: 20200094807Abstract: An electric motor drive retrofit system (EMDRS) comprises a power system, an energy storage system (ESS), a cooling system, a vehicle control unit (VCU), and a user interface device (UID). A non-hybrid combustion engine drive vehicle with tight space constraints is retrofittable with the EMDRS to provide hybrid drive functionality. The EMDRS includes a motor generator unit (MGU) coupled to a motor control unit (MCU). MCU transfers charge between the MGU and ESS. During retrofit, the MGU is coupled between a transmission and an internal combustion engine (ICE) of the vehicle without extending a powertrain length by more than five inches. In a first operating mode (adding torque), MCU supplies the MGU from the ESS to supply torque to the powertrain downstream before a transmission input. In a second operating mode (regenerative braking), the MGU removes torque from the powertrain and drives MCU to charge the ESS.Type: ApplicationFiled: September 26, 2019Publication date: March 26, 2020Inventors: Charles Edward Moreland, William Dean Davis
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Publication number: 20200094810Abstract: An electric motor drive retrofit system (EMDRS) comprises a power system, an energy storage system (ESS), a cooling system, a vehicle control unit (VCU), and a user interface device (UID). A non-hybrid combustion engine drive vehicle with tight space constraints is retrofittable with the EMDRS to provide hybrid drive functionality. EMDRS includes a motor generator unit (MGU) coupled to a motor control unit that transfers charge between MGU and ESS. During retrofit, the MGU is coupled between a transmission and an internal combustion engine (ICE) of the vehicle without extending a powertrain length by more than five inches. VCU does not interfere with any pre-existing vehicle electronics. The VCU controls the EMDRS to add torque (discharging ESS) or to remove torque (charging the ESS) based on a selected operating mode and vehicle sensor information (for example, brake and throttle pressure). Operating modes are selected by driver via the UID.Type: ApplicationFiled: September 26, 2019Publication date: March 26, 2020Inventors: Charles Edward Moreland, William Dean Davis
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Patent number: 10270538Abstract: A circuit may include amplifier circuitry configured to receive a current signal at an amplifier input node, convert the current signal to a voltage signal, and output the voltage signal at an amplifier output node. The circuit may also include overload circuitry configured to receive a replica DC input voltage and a replica DC output voltage. The overload circuitry may be further configured to detect that the current signal exceeds a threshold level based on the replica DC input voltage and the replica DC output voltage. In addition, the overload circuitry may be configured to, in response to and based on detecting that the current signal exceeds the threshold level, direct DC current of the current signal through a DC shunt path and direct AC current of the current signal through an AC shunt path. The AC shunt path may be different from the DC shunt path.Type: GrantFiled: April 17, 2018Date of Patent: April 23, 2019Assignee: FINISAR CORPORATIONInventors: Theron Lee Jones, Richard Dean Davis
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Publication number: 20180278339Abstract: A circuit may include amplifier circuitry configured to receive a current signal at an amplifier input node, convert the current signal to a voltage signal, and output the voltage signal at an amplifier output node. The circuit may also include overload circuitry configured to receive a replica DC input voltage and a replica DC output voltage. The overload circuitry may be further configured to detect that the current signal exceeds a threshold level based on the replica DC input voltage and the replica DC output voltage. In addition, the overload circuitry may be configured to, in response to and based on detecting that the current signal exceeds the threshold level, direct DC current of the current signal through a DC shunt path and direct AC current of the current signal through an AC shunt path. The AC shunt path may be different from the DC shunt path.Type: ApplicationFiled: April 17, 2018Publication date: September 27, 2018Inventors: Theron Lee Jones, Richard Dean Davis
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Patent number: 9948401Abstract: A circuit may include amplifier circuitry configured to receive a current signal at an amplifier input node, convert the current signal to a voltage signal, and output the voltage signal at an amplifier output node. The circuit may also include overload circuitry configured to receive a replica DC input voltage and a replica DC output voltage. The overload circuitry may be further configured to detect that the current signal exceeds a threshold level based on the replica DC input voltage and the replica DC output voltage. In addition, the overload circuitry may be configured to, in response to and based on detecting that the current signal exceeds the threshold level, direct DC current of the current signal through a DC shunt path and direct AC current of the current signal through an AC shunt path. The AC shunt path may be different from the DC shunt path.Type: GrantFiled: October 4, 2016Date of Patent: April 17, 2018Assignee: Finisar CorporationInventors: Theron Lee Jones, Richard Dean Davis
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Publication number: 20180097569Abstract: A circuit may include amplifier circuitry configured to receive a current signal at an amplifier input node, convert the current signal to a voltage signal, and output the voltage signal at an amplifier output node. The circuit may also include overload circuitry configured to receive a replica DC input voltage and a replica DC output voltage. The overload circuitry may be further configured to detect that the current signal exceeds a threshold level based on the replica DC input voltage and the replica DC output voltage. In addition, the overload circuitry may be configured to, in response to and based on detecting that the current signal exceeds the threshold level, direct DC current of the current signal through a DC shunt path and direct AC current of the current signal through an AC shunt path. The AC shunt path may be different from the DC shunt path.Type: ApplicationFiled: October 4, 2016Publication date: April 5, 2018Inventors: Theron Lee Jones, Richard Dean Davis
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Patent number: 9372351Abstract: A circuit includes a front-end circuit, a receiver stage and a controller. An example front-end circuit includes a common base input device, a first current mirror and a second current mirror, where the common base input device has its emitter coupled to a photodiode, its collector coupled to an input of the first current mirror, and its base coupled to a reference voltage to reverse bias the photodiode and where an output of the first current mirror is input into the second current mirror. In another example, a voltage drop resistor is coupled to a cancellation signal output of the first current mirror and an operational transimpedance amplifier (OTA) has inputs coupled to the voltage drop resistor and to a reference voltage and an output coupled to a compensating impedance and to a control input of a variable current source designed to feed the emitter signal input.Type: GrantFiled: May 31, 2012Date of Patent: June 21, 2016Assignee: Maxim Integrated Products, Inc.Inventors: Theron Lee Jones, Richard Dean Davis
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Patent number: 9210738Abstract: The present disclosure relates to apparatuses configured to pre-form atomizers. The apparatus may include wick and heating element supplies configured to respectively provide a substantially continuous wick and a substantially continuous heating element. A winding mechanism is configured to wind the heating element about the wick. An adjustment mechanism is configured to adjust a position at which the winding mechanism winds the heating element about the wick. Additionally a synchronization mechanism synchronizes winding the heating element about the wick with adjustment of the position at which the heating element is wound about the wick such that the heating element defines a coiled heating element segment wound about the wick. This process may be repeated to produce multiple coiled heating element segments wound about the wick. A related method is also provided.Type: GrantFiled: December 7, 2012Date of Patent: December 8, 2015Assignee: R.J. Reynolds Tobacco CompanyInventors: Reeder N. Ward, Kenneth D. White, James Dean Davis
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Patent number: 8948611Abstract: A circuit and method for reducing power consumption in an I/R receiver system includes determining a duty cycle of a command cycle comprising a series of command pulses separated by nulls and enabling and disabling selective active components of an I/R receiver system in accordance with the duty cycle. In an embodiment, the enabling of the active components commences during a null prior to the arrival of a new command pulse. In a further example embodiment, the enabling includes first enabling a first set of active components having a first settling time, waiting for at least the first settling time, and then second enabling a second set of active components having a second settling time.Type: GrantFiled: May 31, 2012Date of Patent: February 3, 2015Assignee: Maxim Integrated Products, Inc.Inventors: Andrew Gerald Zocher, Richard Dean Davis, Theron Lee Jones, Luiz Antonio Razera, Jr.
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Publication number: 20150015400Abstract: A system for monitoring operator alertness. The system includes a sensor for detecting a head position property of a head of an operator and a controller in operative communication with the sensor. The controller is configured to collect a first plurality of time points of the head position property of the head of the operator, determine a baseline of the head position property of the head of the operator based on the first plurality of time points, collect a second plurality of time points of the head position property of the head of the operator, determine an operating condition of the head position property of the head of the operator based on the second plurality of time points, and evaluate the alertness of the operator based on a comparison of the operating condition to the baseline to identify a period of head stillness.Type: ApplicationFiled: July 8, 2014Publication date: January 15, 2015Inventors: Ronald Dean Davis, Travis Brummett, Jason B. Turner, Caleb Browning
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Publication number: 20140157583Abstract: The present disclosure relates to apparatuses configured to pre-form atomizers. The apparatus may include wick and heating element supplies configured to respectively provide a substantially continuous wick and a substantially continuous heating element. A winding mechanism is configured to wind the heating element about the wick. An adjustment mechanism is configured to adjust a position at which the winding mechanism winds the heating element about the wick. Additionally a synchronization mechanism synchronizes winding the heating element about the wick with adjustment of the position at which the heating element is wound about the wick such that the heating element defines a coiled heating element segment wound about the wick. This process may be repeated to produce multiple coiled heating element segments wound about the wick. A related method is also provided.Type: ApplicationFiled: December 7, 2012Publication date: June 12, 2014Applicant: R. J. REYNOLDS TOBACCO COMPANYInventors: Reeder N. Ward, Kenneth D. White, James Dean Davis
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Patent number: 8094006Abstract: A portable bearing test device includes a power supply that is operable to supply direct current (DC) electrical power via a plurality of power supply outputs and a circuit common. Independent bearing test circuits are coupled to receive output electrical power from one of the power supply outputs, and are further adapted to independently couple to a separate rotating machine test bearing. Separate indicator lights are electrically coupled in series in each of the independent bearing test circuits.Type: GrantFiled: December 23, 2008Date of Patent: January 10, 2012Assignee: Honeywell International Inc.Inventor: Randall Dean Davis
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Publication number: 20100156652Abstract: A portable bearing test device includes a power supply that is operable to supply direct current (DC) electrical power via a plurality of power supply outputs and a circuit common. Independent bearing test circuits are coupled to receive output electrical power from one of the power supply outputs, and are further adapted to independently couple to a separate rotating machine test bearing. Separate indicator lights are electrically coupled in series in each of the independent bearing test circuits.Type: ApplicationFiled: December 23, 2008Publication date: June 24, 2010Applicant: HONEYWELL INTERNATIONAL INC.Inventor: Randall Dean Davis
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Publication number: 20080047324Abstract: The present invention is a method and apparatus for sampling a high-temperature gaseous process stream containing components with high boiling points. The sampling system is especially suited for instruments having extremely low pressure chambers, such as mass spectrometers. The invention reduces the condensation of high boiling point components of the sample in the sampling system without the necessity of maintaining extremely high temperatures. The gaseous sample is passed through an orifice from the high temperature stream into a lower-temperature zone of the sampling system where a low pressure is maintained by a vacuum pump. The low pressure reduces the boiling point of the sample components so they may be maintained in a gas phase without excessive heating. The low pressure sample is then introduced into an instrument chamber through a sample introduction valve.Type: ApplicationFiled: July 11, 2007Publication date: February 28, 2008Inventors: Dean Davis, Kenneth Gallaher, Eugene Kesselhuth, Jeffrey Spaulding
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Publication number: 20070130878Abstract: The masonry line block facilitates the alignment of standard masonry walls while providing clearance for the construction of quoin corner buildouts without need to relocate the corner pole set for alignment of the standard wall. The line block has a squared U shape, with a central side or leg and two opposed, parallel legs or sides extending therefrom. The space between the legs fits closely about a conventional masonry corner pole. One of the parallel legs is slightly longer than the other, with the width of the shorter parallel leg preferably being equal to their difference in length. The width of the short leg and their difference in lengths define the additional setback of the corner pole from the corner, and thus the width of the quoin buildout. A medial groove is provided about the device for the guide line, with guide line anchor screws provided in the central leg.Type: ApplicationFiled: November 30, 2005Publication date: June 14, 2007Inventor: Dean Davis
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Publication number: 20070114394Abstract: A system for determining and quantifying specific trace elements in samples of complex materials has a laser ablation (LA) apparatus (1) coupled to a Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR-MS) (2) with a mass range of at least 2 to 300 amu and a mass resolution of at least 8000 for 300 amu.Type: ApplicationFiled: October 21, 2005Publication date: May 24, 2007Inventors: Gerald Combs, Dean Davis, Hartmut Oesten, Michael Przybylski, Wayne Rimkus
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Publication number: 20060153672Abstract: A stall control wind turbine is eguipped with a latchable furling mechanism so that, except in the event of a fault condition or dangerously high winds, the rotor faces directly into the prevailing wind while generating power. A fault condition may occur when the electrical power grid, to which the wind turbine is connected, fails, when the alternator armature winding develops an open circuit and causes an unloading of the turbine, or when the gearbox breaks, also causing an unloading of the turbine. For a preferred embodiment of the invention, the release mechanism employs an electromagnet, which when energized, maintains the tail boom locked in place and the tail in the proper position to maintain the aerodynamic force. The wind turbine may also be eguipped with an electrically released mechanical brake and a back-up centrifugal brake.Type: ApplicationFiled: April 26, 2004Publication date: July 13, 2006Inventor: Dean Davis
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Publication number: 20060060772Abstract: A system, method, and device for providing remote mass spectrometry are disclosed. The exemplary system may have an ion source for injecting ions and a measurement chamber. The measurement chamber may be coupled to the ion source for receiving and detecting signals of the ions. The measurement chamber may have an analysis cell, a magnet and an ionizing device. A control board may be in communication with the measurement chamber. The control board may receive signals received and detected by the measurement chamber. The control board may be located remotely and may have a processor for analyzing the signal.Type: ApplicationFiled: September 12, 2005Publication date: March 23, 2006Inventors: Dean Davis, Wayne Rimkus, James Meyer