Patents by Inventor Cary L. Delano
Cary L. Delano 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: 11081635Abstract: A piezo driver system including a driver including a switching amplifier coupling a power port to a driver port, a battery coupled to the power port, a piezo device coupled to the driver port, where the switching amplifier provides a filtered driver signal to the driver port and returns stored charge from the piezo device to the battery. A method for driving a piezo device includes multiplying an input signal by an oscillator signal to provide a control signal, controlling a switching amplifier in accordance with the control signal to provided a filtered alternating current (AC) driver signal and a returned charge direct current (DC) signal, applying the filtered driver signal to a piezo device, and returning stored charge of the piezo device to a battery.Type: GrantFiled: April 10, 2018Date of Patent: August 3, 2021Assignee: Maxim Integrated Products, Inc.Inventors: Cary L. Delano, Timothy A. Dhuyvetter
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Patent number: 9300261Abstract: A system for driving a plurality of loads each connected to respective signal terminals and to a shared common load terminal. Multiple conventional signal amplifiers each provide a content signal at one of the signal terminals. The signal amplifiers each have a primary-power upper terminal, to receive a first voltage (V1) from a first power supply, and a primary-power lower terminal, to receive a second voltage (V2) from the first power supply. A bias amplifier biases the common load terminal, and has a secondary-power upper terminal to receive a third voltage (V3) from a second power supply and a secondary-power lower terminal to receive a fourth voltage (V4) from the second power supply, wherein V2?V4<V3?V1.Type: GrantFiled: March 10, 2006Date of Patent: March 29, 2016Assignee: NVIDIA CORPORATIONInventors: Cary L. Delano, William R. Chester
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Patent number: 8773196Abstract: A new type of amplifier, herein designated a resource pooling amplifier, involves extended usage of one or more inductors that is implemented by sharing. The sharing is either by switching the inductor or inductors among more than one load terminal at the same time (e.g., a bridged configuration or two different loads terminals with different polarity requirements) or by using the inductor or inductors for more than one purpose at different times. The inductor or inductors may be time shared such as by allocating different phases of a clock. The inductor or inductors may also be shared by monitoring load requirements and using the inductor or inductors only when needed (leaving other inductor cycles for other loads). In addition, inductor sharing may be implemented during different application requirements such as if two or more loads are not needed at the same time in a system. These types of sharing may be combined.Type: GrantFiled: September 25, 2012Date of Patent: July 8, 2014Assignee: Clevech CorporationInventor: Cary L. Delano
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Patent number: 8750531Abstract: This document discusses, among other things, systems and methods for active noise cancellation. One example system includes a digital ANC circuit configured to receive first audio information from a first microphone and to produce an a digital anti-noise signal configured to attenuate noise sensed by the first microphone; an analog ANC circuit configured to receive second audio information from a second microphone and to produce an analog anti-noise signal configured to attenuate noise sensed by the second microphone; and wherein the system is configured to receive an intended audio signal and to provide an output signal for a speaker using the intended audio signal, the analog anti-noise signal, and the digital anti-noise signal.Type: GrantFiled: October 28, 2010Date of Patent: June 10, 2014Assignee: Fairchild Semiconductor CorporationInventors: Cary L. Delano, Steven M. Waldstein
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Publication number: 20130082771Abstract: A new type of amplifier, herein designated a resource pooling amplifier, involves extended usage of one or more inductors that is implemented by sharing. The sharing is either by switching the inductor or inductors among more than one load terminal at the same time (e.g., a bridged configuration or two different loads terminals with different polarity requirements) or by using the inductor or inductors for more than one purpose at different times. The inductor or inductors may be time shared such as by allocating different phases of a clock. The inductor or inductors may also be shared by monitoring load requirements and using the inductor or inductors only when needed (leaving other inductor cycles for other loads). In addition, inductor sharing may be implemented during different application requirements such as if two or more loads are not needed at the same time in a system. These types of sharing may be combined.Type: ApplicationFiled: September 25, 2012Publication date: April 4, 2013Applicant: Clevech CorporationInventor: Cary L. Delano
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Patent number: 8400122Abstract: This document discusses, among other things, a device for providing a DC output voltage, including a first output voltage and a second output voltage, from an input voltage. The device can include a first voltage regulator configured to provide the first output voltage when the input voltage is below a threshold voltage, and a charge pump configured to provide the second output voltage from the first output voltage in a two-state mode when the input voltage is below the threshold voltage, and to provide the first output voltage and the second output voltage in a three-state mode when the input voltage is above the threshold voltage.Type: GrantFiled: December 22, 2009Date of Patent: March 19, 2013Assignee: Fairchild Semiconductor CorporationInventors: Brian Ben North, Cary L. Delano
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Patent number: 8179372Abstract: A system and method for efficient computation in the course of locating a position on the face of a touch-screen-equipped display device by limiting the amount of computations to weighted vectors within a range substantially less than the entire range of data input from the touch screen sensors.Type: GrantFiled: September 29, 2008Date of Patent: May 15, 2012Assignee: Integrated Device Technology, Inc.Inventors: Cary L. Delano, Arun Jayaraman
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Patent number: 8134403Abstract: This document discusses, among other things, a charge pump having a plurality of switching devices, coupled in parallel, and configured to selectively provide a variable available drive current for a capacitor using a comparison of an output voltage to at least one reference voltage.Type: GrantFiled: December 22, 2009Date of Patent: March 13, 2012Assignee: Fairchild Semiconductor CorporationInventors: Timothy Alan Dhuyvetter, Brian Ben North, Cary L. Delano
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Patent number: 8081785Abstract: An audio amplifier system having improved power efficiency by wasting less power in its bias voltage circuit. An amplifier provides a voice signal to a first (+) input of a loudspeaker and a high efficiency converter provides a bias voltage to a second (?) input of the loudspeaker. In multi-loudspeaker systems, a single high efficiency converter can bias all the loudspeakers at a common node. The high efficiency converter can be a charge pump or a buck converter or the like, and has greater than 90% efficiency.Type: GrantFiled: March 20, 2007Date of Patent: December 20, 2011Assignee: Fairchild Semiconductor CorporationInventors: Cary L. Delano, William R. Chester
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Publication number: 20110148510Abstract: This document discusses, among other things, a charge pump having a plurality of switching devices, coupled in parallel, and configured to selectively provide a variable available drive current for a capacitor using a comparison of an output voltage to at least one reference voltage.Type: ApplicationFiled: December 22, 2009Publication date: June 23, 2011Applicant: Fairchild Semiconductor CorporationInventors: Timothy Alan Dhuyvetter, Brian Ben North, Cary L. Delano
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Publication number: 20110148385Abstract: This document discusses, among other things, a device for providing a DC output voltage, including a first output voltage and a second output voltage, from an input voltage. The device can include a first voltage regulator configured to provide the first output voltage when the input voltage is below a threshold voltage, and a charge pump configured to provide the second output voltage from the first output voltage in a two-state mode when the input voltage is below the threshold voltage, and to provide the first output voltage and the second output voltage in a three-state mode when the input voltage is above the threshold voltage.Type: ApplicationFiled: December 22, 2009Publication date: June 23, 2011Applicant: Fairchild Semiconductor CorporationInventors: Brian Ben North, Cary L. Delano
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Publication number: 20110129098Abstract: This document discusses, among other things, systems and methods for active noise cancellation. One example system includes a digital ANC circuit configured to receive first audio information from a first microphone and to produce an a digital anti-noise signal configured to attenuate noise sensed by the first microphone; an analog ANC circuit configured to receive second audio information from a second microphone and to produce an analog anti-noise signal configured to attenuate noise sensed by the second microphone; and wherein the system is configured to receive an intended audio signal and to provide an output signal for a speaker using the intended audio signal, the analog anti-noise signal, and the digital anti-noise signal.Type: ApplicationFiled: October 28, 2010Publication date: June 2, 2011Inventors: Cary L. Delano, Steven M. Waldstein
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Patent number: 7750732Abstract: An efficient class-G amplifier having multiple rails is configured with parallel class AB amplifiers powered by at least one rail supplying a voltage that can be varied in response to signal characteristics, typically as sensed at an output across a load. In a specific embodiment, an analog-to-digital converter is coupled to a digital signal processor that converts signals into a programmed voltage level for setting the voltage rail.Type: GrantFiled: December 2, 2008Date of Patent: July 6, 2010Assignee: Fairchild Semiconductor CorporationInventors: Cary L. Delano, Brian B. North, Arun Jayaraman
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Patent number: 7733178Abstract: According to the invention, an audio amplifier system for use with a single-ended portable power supply that is referenced to ground, such as a small battery, has a single-channel class G amplifier section, a multiple voltage output charge pump subsystem for supplying complementary pairs of power supply voltages at selected ratiometric levels to an amplifier section, a set of switches on the power supply rails and a power-measuring comparator for selecting which complementary pair of power supply voltages is provided to the amplifier section.Type: GrantFiled: October 23, 2008Date of Patent: June 8, 2010Assignee: Fairchild Semiconductor CorporationInventors: Cary L. Delano, Brian B. North
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Patent number: 7649415Abstract: A new Class L amplifier which dynamically switches between multiple pairs of power rails, and has the ability to select the most advantageous combination of rails for the minimization of power dissipation in the amplifier. In one embodiment, a bridged amplifier system includes two Class L amplifiers to drive a load.Type: GrantFiled: August 28, 2008Date of Patent: January 19, 2010Assignee: Fairchild Semiconductor CorporationInventor: Cary L. Delano
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Patent number: 7548178Abstract: A sigma delta analog-to-digital converter (ADC) to convert an analog converter input signal to a digital converter output signal. Multiple integrator stages, including at least a first and a final one, each receive an analog input signal and an analog feedback signal and output an integrated signal. The integrator stages are serially ordered to receive the converter input signal and then preceding of the integrated signals. A quantizer receives the integrated signal of the final or multiple integrator stages and provides the converter output signal. A feedback system also receives the converter output signal and provides the respective analog feedback signals to at least one of the integrator stages. The feedback system particularly includes resisters arrayed so that at least one is in the paths of all of the analog feedback signals and others are only in the paths of each individual analog feedback signal.Type: GrantFiled: March 10, 2006Date of Patent: June 16, 2009Assignee: NVIDIA CorporationInventor: Cary L. Delano
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Patent number: 7522433Abstract: A voltage reference generation circuit having switch pairs coupled to systematically commutate a flying capacitor among adjacent pairs of voltage rail outputs. The circuit requires only a single flying capacitor, N+1 switch pairs, and N storage capacitors, to generate N intermediate voltage references between VDD and GND. A signal generator produces N+1 non-overlapping switch enable signals to systematically enable the switch pairs and commutate the single flying capacitor between the rail pairs. The flying capacitor remains charged to VDD/(N+1). The N storage capacitors hold their respective reference outputs at VDD*N/(N+1), VDD*(N?1)/(N+1), VDD*(N?2)/(N+1), and so forth.Type: GrantFiled: March 20, 2007Date of Patent: April 21, 2009Assignee: Fairchild Semiconductor CorporationInventors: Cary L. Delano, William R. Chester
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Patent number: 7498880Abstract: A new Class L amplifier which dynamically switches between multiple pairs of power rails, and has the ability to select the most advantageous combination of rails for the minimization of power dissipation in the amplifier. A bridged amplifier system using two Class L amplifiers to drive a load.Type: GrantFiled: March 20, 2007Date of Patent: March 3, 2009Assignee: Leadis Technology, Inc.Inventor: Cary L. Delano
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Publication number: 20080315955Abstract: A new Class L amplifier which dynamically switches between multiple pairs of power rails, and has the ability to select the most advantageous combination of rails for the minimization of power dissipation in the amplifier. In one embodiment, a bridged amplifier system includes two Class L amplifiers to drive a load.Type: ApplicationFiled: August 28, 2008Publication date: December 25, 2008Applicant: Leadis Technology, Inc.Inventor: Cary L. Delano
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Patent number: RE47383Abstract: A new type of amplifier, herein designated a resource pooling amplifier, involves extended usage of one or more inductors that is implemented by sharing. The sharing is either by switching the inductor or inductors among more than one load terminal at the same time (e.g., a bridged configuration or two different loads terminals with different polarity requirements) or by using the inductor or inductors for more than one purpose at different times. The inductor or inductors may be time shared such as by allocating different phases of a clock. The inductor or inductors may also be shared by monitoring load requirements and using the inductor or inductors only when needed (leaving other inductor cycles for other loads). In addition, inductor sharing may be implemented during different application requirements such as if two or more loads are not needed at the same time in a system. These types of sharing may be combined.Type: GrantFiled: January 25, 2016Date of Patent: May 7, 2019Inventor: Cary L. Delano