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).

  • Patent number: 11081635
    Abstract: 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: Grant
    Filed: April 10, 2018
    Date of Patent: August 3, 2021
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Cary L. Delano, Timothy A. Dhuyvetter
  • Patent number: 9300261
    Abstract: 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: Grant
    Filed: March 10, 2006
    Date of Patent: March 29, 2016
    Assignee: NVIDIA CORPORATION
    Inventors: Cary L. Delano, William R. Chester
  • Patent number: 8773196
    Abstract: 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: Grant
    Filed: September 25, 2012
    Date of Patent: July 8, 2014
    Assignee: Clevech Corporation
    Inventor: Cary L. Delano
  • Patent number: 8750531
    Abstract: 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: Grant
    Filed: October 28, 2010
    Date of Patent: June 10, 2014
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Cary L. Delano, Steven M. Waldstein
  • Publication number: 20130082771
    Abstract: 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: Application
    Filed: September 25, 2012
    Publication date: April 4, 2013
    Applicant: Clevech Corporation
    Inventor: Cary L. Delano
  • Patent number: 8400122
    Abstract: 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: Grant
    Filed: December 22, 2009
    Date of Patent: March 19, 2013
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Brian Ben North, Cary L. Delano
  • Patent number: 8179372
    Abstract: 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: Grant
    Filed: September 29, 2008
    Date of Patent: May 15, 2012
    Assignee: Integrated Device Technology, Inc.
    Inventors: Cary L. Delano, Arun Jayaraman
  • Patent number: 8134403
    Abstract: 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: Grant
    Filed: December 22, 2009
    Date of Patent: March 13, 2012
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Timothy Alan Dhuyvetter, Brian Ben North, Cary L. Delano
  • Patent number: 8081785
    Abstract: 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: Grant
    Filed: March 20, 2007
    Date of Patent: December 20, 2011
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Cary L. Delano, William R. Chester
  • Publication number: 20110148510
    Abstract: 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: Application
    Filed: December 22, 2009
    Publication date: June 23, 2011
    Applicant: Fairchild Semiconductor Corporation
    Inventors: Timothy Alan Dhuyvetter, Brian Ben North, Cary L. Delano
  • Publication number: 20110148385
    Abstract: 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: Application
    Filed: December 22, 2009
    Publication date: June 23, 2011
    Applicant: Fairchild Semiconductor Corporation
    Inventors: Brian Ben North, Cary L. Delano
  • Publication number: 20110129098
    Abstract: 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: Application
    Filed: October 28, 2010
    Publication date: June 2, 2011
    Inventors: Cary L. Delano, Steven M. Waldstein
  • Patent number: 7750732
    Abstract: 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: Grant
    Filed: December 2, 2008
    Date of Patent: July 6, 2010
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Cary L. Delano, Brian B. North, Arun Jayaraman
  • Patent number: 7733178
    Abstract: 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: Grant
    Filed: October 23, 2008
    Date of Patent: June 8, 2010
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Cary L. Delano, Brian B. North
  • Patent number: 7649415
    Abstract: 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: Grant
    Filed: August 28, 2008
    Date of Patent: January 19, 2010
    Assignee: Fairchild Semiconductor Corporation
    Inventor: Cary L. Delano
  • Patent number: 7548178
    Abstract: 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: Grant
    Filed: March 10, 2006
    Date of Patent: June 16, 2009
    Assignee: NVIDIA Corporation
    Inventor: Cary L. Delano
  • Patent number: 7522433
    Abstract: 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: Grant
    Filed: March 20, 2007
    Date of Patent: April 21, 2009
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Cary L. Delano, William R. Chester
  • Patent number: 7498880
    Abstract: 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: Grant
    Filed: March 20, 2007
    Date of Patent: March 3, 2009
    Assignee: Leadis Technology, Inc.
    Inventor: Cary L. Delano
  • Publication number: 20080315955
    Abstract: 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: Application
    Filed: August 28, 2008
    Publication date: December 25, 2008
    Applicant: Leadis Technology, Inc.
    Inventor: Cary L. Delano
  • Patent number: RE47383
    Abstract: 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: Grant
    Filed: January 25, 2016
    Date of Patent: May 7, 2019
    Inventor: Cary L. Delano