Patents by Inventor Justin O'Day
Justin O'Day 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: 8754719Abstract: A divider for use in an integrated circuit chip, such as a clock generator chip, includes a ramp generator circuit configured to generate a ramp signal and a synchronous detector circuit configured to receive the ramp signal and an input clock signal and to responsively control the ramp signal generator circuit to generate an output clock signal at an output of the synchronous detector circuit. In some embodiments, the synchronous detector circuit may include a voltage threshold detector circuit configured to receive the ramp signal and to generate a detection signal responsive thereto and a synchronous latch circuit having a clock input configured to receive the input clock signal and a data input configured to receive the detection signal. The synchronous latch circuit may be configured to control the ramp generator circuit.Type: GrantFiled: December 22, 2011Date of Patent: June 17, 2014Assignee: Integrated Device Technology Inc.Inventor: Justin O'Day
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Patent number: 8542040Abstract: An integrated circuit includes a first variable divider circuit configured to receive a clock signal and to apply a lower range of integer division factors thereto responsive to a first control input to generate a first divided clock signal and a second variable divider circuit configured to receive the clock signal and to apply an upper range of integer division factors thereto responsive to a second control input to generate a second divided clock signal. The integrated circuit further includes a multiplexer circuit configured to selectively pass the first and second divided clock signals responsive to a third control input.Type: GrantFiled: October 31, 2011Date of Patent: September 24, 2013Assignee: Integrated Device Technology, Inc.Inventor: Justin O'Day
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Patent number: 8164159Abstract: A reference signal generator includes an integrated circuit substrate having a semiconductor resonator therein. The resonator includes an inductor extending adjacent a first surface of the integrated circuit substrate. A vertically-stacked composite of at least first and second electrically insulating dielectric layers is provided on the integrated circuit substrate. The vertically-stacked composite covers a portion of the first surface, which extends opposite the inductor. A first electrically conductive shielding layer is provided on a portion of the second electrically insulating dielectric layer extending opposite the inductor. The first electrically conductive shielding layer may encapsulate exposed portions of the first and second electrically insulating dielectric layers. The shielding layer may operate as an electromagnetic shield between the inductor and an external structure, such as an integrated circuit package, and also shield against environmental contamination (e.g.Type: GrantFiled: July 16, 2010Date of Patent: April 24, 2012Assignee: Intergrated Device Technologies, inc.Inventors: William Eddie Armstrong, Michael Shannon McCorquodale, Vidyabhusan Gupta, Justin O'Day, Nader Fayyaz, Gordon Carichner
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Patent number: 8093958Abstract: Exemplary embodiments of the invention provide a reference signal generator having a controlled quality (“Q”) factor. An exemplary apparatus to generate a harmonic reference signal includes a reference resonator, such as an LC-tank, which generates a first reference signal having a resonant frequency, and a plurality of reactance modules couplable to the reference resonator. Each reactance module comprises one or more reactance unit cells, and each reactance unit cell comprises a reactance element coupled in series to a switching element. In exemplary embodiments, the reactance element is a capacitor having a predetermined unit of capacitance, and the switching element is a transistor having a predetermined resistance when in an off state. The ratio of capacitance to resistance is substantially constant for all reactance modules of the plurality of reactance modules.Type: GrantFiled: January 12, 2008Date of Patent: January 10, 2012Assignee: Integrated Device Technology, Inc.Inventors: Justin O'Day, Michael Shannon McCorquodale, Scott Michael Pernia, Nam Duc Nguyen, Ralph Beaudouin, Sundus Kubba
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Patent number: 7978017Abstract: Exemplary embodiments of the invention provide a reference signal generator, system and method. An exemplary apparatus to generate a harmonic reference signal includes a reference resonator, such as an LC-tank, a control voltage generator adapted to provide a temperature-dependent control voltage; and a plurality of variable reactance modules. The reference resonator generates a first reference signal having a resonant frequency, and each reactance module is adapted to modify a corresponding reactance in response to the control voltage to maintain the resonant frequency substantially constant or within a predetermined variance over a predetermined temperature range. A frequency controller may also be included to maintain substantially constant a magnitude of a peak amplitude of the first reference signal and maintains substantially constant a common mode voltage level of the reference resonator.Type: GrantFiled: January 12, 2008Date of Patent: July 12, 2011Assignee: Integrated Device Technology, Inc.Inventors: Scott Michael Pernia, Nam Duc Nguyen, Michael Shannon McCorquodale, Justin O'Day, Ralph Beaudouin, Sundus Kubba
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Patent number: 7679463Abstract: Exemplary embodiments of the invention provide a reference harmonic oscillator integrated circuit having three or more terminals, with systems and methods for calibrating the harmonic oscillator to a selected first frequency using a limited number of terminals. An exemplary apparatus comprises: a reference harmonic oscillator, a first terminal to receive a supply voltage, a second terminal to receive a ground potential, a third terminal to provide an output signal having an output frequency, and may also include a fourth terminal. One of the first, second, third or fourth terminals is further adapted for input of a calibration of the first frequency. The exemplary apparatus may enter calibration and testing modes in response to various commands such as a calibration mode signal, and may also be configured through one of the terminals for output frequency selection, spread-spectrum output, and output voltage levels.Type: GrantFiled: May 23, 2007Date of Patent: March 16, 2010Assignee: Mobius Microsystems, Inc.Inventors: Scott Michael Pernia, Michael Shannon McCorquodale, Sundus Kubba, Justin O'Day, Gordon Carichner, Eric David Marsman
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Patent number: 7656244Abstract: In various embodiments, the invention provides a discrete clock generator and/or a timing and frequency reference using an LC-oscillator topology, having a frequency controller to control and provide a stable resonant frequency, which may then be provided to other, second circuitry such as a processor or controller. Frequency stability is provided over variations in a selected parameter such as temperature and fabrication process variations. The various apparatus embodiments include a sensor adapted to provide a signal in response to at least one parameter of a plurality of parameters; and a frequency controller adapted to modify the resonant frequency in response to the second signal. In exemplary embodiments, the sensor is implemented as a current source responsive to temperature fluctuations, and the frequency controller is implemented as a plurality of controlled reactance modules which are selectively couplable to the resonator or to one or more control voltages.Type: GrantFiled: February 22, 2008Date of Patent: February 2, 2010Assignee: Mobius Microsystems, Inc.Inventors: Michael Shannon McCorquodale, Scott Michael Pernia, Sundus Kubba, Justin O'Day, Gordon Carichner
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Patent number: 7656245Abstract: In various embodiments, the invention provides a clock generator and/or a timing and frequency reference using an LC-oscillator topology, having a frequency controller to control and provide a stable resonant frequency, which is integrated with other, second circuitry such as a processor or controller. Frequency stability is provided over variations in a selected parameter such as temperature and fabrication process variations. The various apparatus embodiments include a sensor adapted to provide a signal in response to at least one parameter of a plurality of parameters; and a frequency controller adapted to modify the resonant frequency in response to the second signal. In exemplary embodiments, the sensor is implemented as a current source responsive to temperature fluctuations, and the frequency controller is implemented as a plurality of controlled reactance modules which are selectively couplable to the resonator or to one or more control voltages.Type: GrantFiled: February 22, 2008Date of Patent: February 2, 2010Assignee: Mobius Microsystems, Inc.Inventors: Michael Shannon McCorquodale, Scott Michael Pernia, Sundus Kubba, Justin O'Day, Gordon Carichner
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Publication number: 20090146751Abstract: Exemplary embodiments of the invention provide a reference signal generator, system and method. An exemplary apparatus to generate a harmonic reference signal includes a reference resonator, such as an LC-tank, and a frequency controller. The reference resonator generates a first reference signal having a resonant frequency, and the frequency controller maintains substantially constant a magnitude of a peak amplitude of the first reference signal and maintains substantially constant a common mode voltage level of the reference resonator. A temperature-dependent control voltage is also generated and utilized to maintain the resonant frequency substantially constant or within a predetermined variance of a calibrated or selected frequency.Type: ApplicationFiled: December 5, 2007Publication date: June 11, 2009Applicant: MOBIUS MICROSYSTEMS, INC.Inventors: Scott Michael Pernia, Michael Shannon McCorquodale, Nam Duc Nguyen, Justin O'Day, Ralph Beaudouin, Sundus Kubba
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Publication number: 20090146719Abstract: Exemplary embodiments of the invention provide a reference signal generator, system and method. An exemplary apparatus to generate a harmonic reference signal includes a reference resonator, such as an LC-tank, a control voltage generator adapted to provide a temperature-dependent control voltage; and a plurality of variable reactance modules. The reference resonator generates a first reference signal having a resonant frequency, and each reactance module is adapted to modify a corresponding reactance in response to the control voltage to maintain the resonant frequency substantially constant or within a predetermined variance over a predetermined temperature range. A frequency controller may also be included to maintain substantially constant a magnitude of a peak amplitude of the first reference signal and maintains substantially constant a common mode voltage level of the reference resonator.Type: ApplicationFiled: January 12, 2008Publication date: June 11, 2009Applicant: MOBIUS MICROSYSTEMS, INC.Inventors: Scott Michael Pernia, Michael Shannon McCorquodale, Nam Duc Nguyen, Justin O'Day, Ralph Beaudouin, Sundus Kubba
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Publication number: 20090146752Abstract: Exemplary embodiments of the invention provide a reference signal generator having a controlled quality (“Q”) factor. An exemplary apparatus to generate a harmonic reference signal includes a reference resonator, such as an LC-tank, which generates a first reference signal having a resonant frequency, and a plurality of reactance modules couplable to the reference resonator. Each reactance module comprises one or more reactance unit cells, and each reactance unit cell comprises a reactance element coupled in series to a switching element. In exemplary embodiments, the reactance element is a capacitor having a predetermined unit of capacitance, and the switching element is a transistor having a predetermined resistance when in an off state. The ratio of capacitance to resistance is substantially constant for all reactance modules of the plurality of reactance modules.Type: ApplicationFiled: January 12, 2008Publication date: June 11, 2009Applicant: MOBIUS MICROSYSTEMS, INC.Inventors: Justin O'Day, Michael Shannon McCorquodale, Scott Michael Pernia, Nam Duc Nguyen, Ralph Beaudouin, Sundus Kubba
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Publication number: 20090146748Abstract: Exemplary embodiments of the invention provide a reference signal generator, system and method. An exemplary apparatus to generate a harmonic reference signal includes a reference resonator, such as an LC-tank, and an amplitude controller. The reference resonator generates a first reference signal having a resonant frequency, and the amplitude controller maintains substantially constant a magnitude of a peak amplitude of the first reference signal. A common mode controller may also be included to maintain substantially constant a common mode voltage level of the reference resonator. A temperature-dependent control voltage also may be generated and utilized to maintain the resonant frequency substantially constant or within a predetermined variance of a calibrated or selected frequency.Type: ApplicationFiled: January 12, 2008Publication date: June 11, 2009Applicant: MOBIUS MICROSYSTEMS, INC.Inventors: Scott Michael Pernia, Michael Shannon McCorquodale, Nam Duc Nguyen, Justin O'Day, Ralph Beaudouin, Sundus Kubba
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Publication number: 20090146750Abstract: Exemplary embodiments of the invention provide a reference signal generator, system and method. An exemplary apparatus to generate a harmonic reference signal includes a reference resonator, such as an LC-tank, and a common mode controller. The reference resonator generates a first reference signal having a resonant frequency, and the common mode controller maintains substantially constant a common mode voltage level of the reference resonator. An amplitude controller may also be included to maintain substantially constant a magnitude of a peak amplitude of the first reference signal. A temperature-dependent control voltage also may be generated and utilized to maintain the resonant frequency substantially constant or within a predetermined variance of a calibrated or selected frequency.Type: ApplicationFiled: January 12, 2008Publication date: June 11, 2009Applicant: MOBIUS MICROSYSTEMS, INC.Inventors: Scott Michael Pernia, Michael Shannon McCorquodale, Nam Duc Nguyen, Justin O'Day, Ralph Beaudouin, Sundus Kubba
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Publication number: 20080150645Abstract: In various embodiments, the invention provides a discrete clock generator and/or a timing and frequency reference using an LC-oscillator topology, having a frequency controller to control and provide a stable resonant frequency, which may then be provided to other, second circuitry such as a processor or controller. Frequency stability is provided over variations in a selected parameter such as temperature and fabrication process variations. The various apparatus embodiments include a sensor adapted to provide a signal in response to at least one parameter of a plurality of parameters; and a frequency controller adapted to modify the resonant frequency in response to the second signal. In exemplary embodiments, the sensor is implemented as a current source responsive to temperature fluctuations, and the frequency controller is implemented as a plurality of controlled reactance modules which are selectively couplable to the resonator or to one or more control voltages.Type: ApplicationFiled: February 22, 2008Publication date: June 26, 2008Applicant: MOBIUS MICROSYSTEMS, INC.Inventors: Michael Shannon McCorquodale, Scott Michael Pernia, Sundus Kubba, Justin O'Day, Gordon Carichner
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Publication number: 20080143454Abstract: In various embodiments, the invention provides a clock generator and/or a timing and frequency reference using an LC-oscillator topology, having a frequency controller to control and provide a stable resonant frequency, which is integrated with other, second circuitry such as a processor or controller. Frequency stability is provided over variations in a selected parameter such as temperature and fabrication process variations. The various apparatus embodiments include a sensor adapted to provide a signal in response to at least one parameter of a plurality of parameters; and a frequency controller adapted to modify the resonant frequency in response to the second signal. In exemplary embodiments, the sensor is implemented as a current source responsive to temperature fluctuations, and the frequency controller is implemented as a plurality of controlled reactance modules which are selectively couplable to the resonator or to one or more control voltages.Type: ApplicationFiled: February 22, 2008Publication date: June 19, 2008Applicant: MOBIUS MICROSYSTEMS, INC.Inventors: Michael Shannon McCorquodale, Scott Michael Pernia, Sundus Kubba, Justin O'Day, Gordon Carichner
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Patent number: 7365614Abstract: In various embodiments, the invention provides a clock generator and/or a timing and frequency reference using an LC-oscillator topology, having a frequency controller to control and provide a stable resonant frequency, which is integrated with other, second circuitry such as a processor or controller. Frequency stability is provided over variations in a selected parameter such as temperature and fabrication process variations. The various apparatus embodiments include a sensor adapted to provide a signal in response to at least one parameter of a plurality of parameters; and a frequency controller adapted to modify the resonant frequency in response to the second signal. In exemplary embodiments, the sensor is implemented as a current source responsive to temperature fluctuations, and the frequency controller is implemented as a plurality of controlled reactance modules which are selectively couplable to the resonator or to one or more control voltages.Type: GrantFiled: March 20, 2006Date of Patent: April 29, 2008Assignee: Mobius Microsystems, Inc.Inventors: Michael Shannon McCorquodale, Scott Michael Pernia, Sundus Kubba, Justin O'Day, Gordon Carichner
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Patent number: 7358826Abstract: In various embodiments, the invention provides a discrete clock generator and/or a timing and frequency reference using an LC-oscillator topology, having a frequency controller to control and provide a stable resonant frequency, which may then be provided to other, second circuitry such as a processor or controller. Frequency stability is provided over variations in a selected parameter such as temperature and fabrication process variations. The various apparatus embodiments include a sensor adapted to provide a signal in response to at least one parameter of a plurality of parameters; and a frequency controller adapted to modify the resonant frequency in response to the second signal. In exemplary embodiments, the sensor is implemented as a current source responsive to temperature fluctuations, and the frequency controller is implemented as a plurality of controlled reactance modules which are selectively couplable to the resonator or to one or more control voltages.Type: GrantFiled: March 20, 2006Date of Patent: April 15, 2008Assignee: Mobius Microsystems, Inc.Inventors: Michael Shannon McCorquodale, Scott Michael Pernia, Sundus Kubba, Justin O'Day, Gordon Carichner
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Publication number: 20070222528Abstract: Exemplary embodiments of the invention provide a reference harmonic oscillator integrated circuit having three or more terminals, with systems and methods for calibrating the harmonic oscillator to a selected first frequency using a limited number of terminals. An exemplary apparatus comprises: a reference harmonic oscillator, a first terminal to receive a supply voltage, a second terminal to receive a ground potential, a third terminal to provide an output signal having an output frequency, and may also include a fourth terminal. One of the first, second, third or fourth terminals is further adapted for input of a calibration of the first frequency. The exemplary apparatus may enter calibration and testing modes in response to various commands such as a calibration mode signal, and may also be configured through one of the terminals for output frequency selection, spread-spectrum output, and output voltage levels.Type: ApplicationFiled: May 23, 2007Publication date: September 27, 2007Applicant: Mobius Microsystems, Inc.Inventors: Scott Pernia, Michael McCorquodale, Sundus Kubba, Justin O'Day, Gordon Carichner, Eric Marsman
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Publication number: 20060158268Abstract: In various embodiments, the invention provides a discrete clock generator and/or a timing and frequency reference using an LC-oscillator topology, having a frequency controller to control and provide a stable resonant frequency, which may then be provided to other, second circuitry such as a processor or controller. Frequency stability is provided over variations in a selected parameter such as temperature and fabrication process variations. The various apparatus embodiments include a sensor adapted to provide a signal in response to at least one parameter of a plurality of parameters; and a frequency controller adapted to modify the resonant frequency in response to the second signal. In exemplary embodiments, the sensor is implemented as a current source responsive to temperature fluctuations, and the frequency controller is implemented as a plurality of controlled reactance modules which are selectively couplable to the resonator or to one or more control voltages.Type: ApplicationFiled: March 20, 2006Publication date: July 20, 2006Applicant: Mobius Microsystems, Inc.Inventors: Michael McCorquodale, Scott Pernia, Sundus Kubba, Justin O'Day, Gordon Carichner
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Publication number: 20060152293Abstract: In various embodiments, the invention provides a clock generator and/or a timing and frequency reference using an LC-oscillator topology, having a frequency controller to control and provide a stable resonant frequency, which is integrated with other, second circuitry such as a processor or controller. Frequency stability is provided over variations in a selected parameter such as temperature and fabrication process variations. The various apparatus embodiments include a sensor adapted to provide a signal in response to at least one parameter of a plurality of parameters; and a frequency controller adapted to modify the resonant frequency in response to the second signal. In exemplary embodiments, the sensor is implemented as a current source responsive to temperature fluctuations, and the frequency controller is implemented as a plurality of controlled reactance modules which are selectively couplable to the resonator or to one or more control voltages.Type: ApplicationFiled: March 20, 2006Publication date: July 13, 2006Applicant: Mobius Microsystems, Inc.Inventors: Michael McCorquodale, Scott Pernia, Sundus Kubba, Justin O'Day, Gordon Carichner