Patents by Inventor Michael Terence Durston
Michael Terence Durston 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: 11143669Abstract: A method of manufacturing an inertial measurement unit (IMU) comprises fabricating a plurality of individual MEMS inertial sensor packages at a package level as sealed packages containing a MEMS inertial sensor chip and an integrated circuit electrically connected together. Fabricating the individual MEMS inertial sensor packages comprises forming mechanical interconnect features in each package and assembling the IMU by mechanically interconnecting each individual MEMS inertial sensor package with another individual MEMS inertial sensor package in a mutually orthogonal orientation.Type: GrantFiled: January 30, 2019Date of Patent: October 12, 2021Assignee: ATLANTIC INERTIAL SYSTEMS, LIMITEDInventors: Kevin Townsend, Michael Terence Durston
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Publication number: 20190265268Abstract: A method of manufacturing an inertial measurement unit (IMU) comprises fabricating a plurality of individual MEMS inertial sensor packages at a package level as sealed packages containing a MEMS inertial sensor chip and an integrated circuit electrically connected together. Fabricating the individual MEMS inertial sensor packages comprises forming mechanical interconnect features in each package and assembling the IMU by mechanically interconnecting each individual MEMS inertial sensor package with another individual MEMS inertial sensor package in a mutually orthogonal orientation.Type: ApplicationFiled: January 30, 2019Publication date: August 29, 2019Inventors: Kevin Townsend, Michael Terence Durston
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Patent number: 10330719Abstract: A sensor device includes at least two transducers, a sensor signal processing circuit, and a transducer to sensor signal processing circuit electrical connections, each connecting a respective one of the transducers to the sensor signal processing circuit. The device also includes a differential amplifier connected with two bond wires, the bond wires connected to the differential inputs of the differential amplifier and the amplifier output connected to the sensor signal processing circuit.Type: GrantFiled: July 3, 2014Date of Patent: June 25, 2019Assignee: SILICON SENSING SYSTEMS LIMITEDInventors: Michael Terence Durston, Douglas Robert Sitch
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Patent number: 10161957Abstract: A method for closed loop operation of a capacitive accelerometer comprising: a proof mass; first and second sets of both fixed and moveable capacitive electrode fingers, interdigitated with each other; the method comprising: applying PWM drive signals to the fixed fingers; sensing displacement of the proof mass and changing the mark:space ratio of the PWM drive signals, to provide a restoring force on the proof mass that balances the inertial force of the applied acceleration and maintains the proof mass at a null position; detecting when the mark:space ratio for the null position is beyond a predetermined upper or lower threshold; and further modulating the PWM drive signals by extending or reducing x pulses in every y cycles, where x>1 and y>1, to provide an average mark:space ratio beyond the upper or lower threshold without further increasing or decreasing the mark length of the other pulses.Type: GrantFiled: March 17, 2015Date of Patent: December 25, 2018Assignee: ATLANTIC INERTIAL SYSTEMS, LIMITEDInventors: Kevin Townsend, Michael Terence Durston
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Patent number: 10135454Abstract: A successive approximation Analog to Digital Converter (ADC), comprising: a sample and hold device arranged to sample and hold an input signal at the beginning of a conversion cycle; a successive approximation register that sequentially builds up a digital output from its most significant bit to its least significant bit; a digital to analog converter that outputs a signal based on the output of the successive approximation register; a comparator that compares the output of the digital to analog converter with an output of the sample and hold device and supplies its output to the successive approximation register; and a residual signal storage device arranged to store the residual signal at the end of a conversion cycle; and wherein the successive approximation ADC is arranged to add the stored residual signal from the residual signal storage device to the input signal stored on the sample and hold device at the start of each conversion cycle.Type: GrantFiled: December 3, 2015Date of Patent: November 20, 2018Assignee: ATLANTIC INERTIAL SYSTEMS LIMITEDInventors: Michael Terence Durston, Kevin Townsend, Douglas Robert Sitch
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Publication number: 20170346497Abstract: A successive approximation Analogue to Digital Converter (ADC), comprising: a sample and hold device arranged to sample and hold an input signal at the beginning of a conversion cycle; a successive approximation register that sequentially builds up a digital output from its most significant bit to its least significant bit; a digital to analogue converter that outputs a signal based on the output of the successive approximation register; a comparator that compares the output of the digital to analogue converter with an output of the sample and hold device and supplies its output to the successive approximation register; and a residual signal storage device arranged to store the residual signal at the end of a conversion cycle; and wherein the successive approximation ADC is arranged to add the stored residual signal from the residual signal storage device to the input signal stored on the sample and hold device at the start of each conversion cycle.Type: ApplicationFiled: December 3, 2015Publication date: November 30, 2017Applicant: Atlantic Inertial Systems LimitedInventors: Michael Terence Durston, Kevin Townsend, Douglas Robert Sitch
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Publication number: 20170089947Abstract: A method for closed loop operation of a capacitive accelerometer comprising: a proof mass; first and second sets of both fixed and moveable capacitive electrode fingers, interdigitated with each other; the method comprising: applying PWM drive signals to the fixed fingers; sensing displacement of the proof mass and changing the mark:space ratio of the PWM drive signals, to provide a restoring force on the proof mass that balances the inertial force of the applied acceleration and maintains the proof mass at a null position; detecting when the mark:space ratio for the null position is beyond a predetermined upper or lower threshold; and further modulating the PWM drive signals by extending or reducing x pulses in every y cycles, where x>1 and y>1, to provide an average mark:space ratio beyond the upper or lower threshold without further increasing or decreasing the mark length of the other pulses.Type: ApplicationFiled: March 17, 2015Publication date: March 30, 2017Applicant: Atlantic Inertial Systems LimitedInventors: Kevin Townsend, Michael Terence Durston
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Publication number: 20160370417Abstract: A sensor device comprising at least two transducers; a sensor signal processing circuit; transducer to sensor signal processing circuit electrical connections, each connecting a respective one of the transducers to the sensor signal processing circuit; a differential amplifier connected with two bond wires, the bond wires connected to the differential inputs of the differential amplifier and the amplifier output connected to the sensor signal processing circuit.Type: ApplicationFiled: July 3, 2014Publication date: December 22, 2016Applicant: SILICON SENSING SYSTEMS LIMITEDInventors: Michael Terence Durston, Douglas Robert Sitch