Patents Assigned to Microchip Technology Incorporated
  • Publication number: 20200160855
    Abstract: A system for enhanced processing of voice-based signals in a voice-controllable sound-generating system (SGS) is provided. An SGS audio source may communicate electronic SGS audio signals to both (a) one or more speakers, which output corresponding SGS sound waves and (b) an audio countering system. A microphone may detect sound waves and output corresponding audio signals including: (a) distorted SGS audio signals corresponding with SGS sound waves and (b) additional audio signals originated from other sources, e.g., including voice-based commands. The audio countering system may (a) receive the electronic SGS audio signals from the SGS audio source; receive signals from the microphone representing the microphone-detected sound waves, and (c) use the electronic SGS audio signals received to cancel or counter the distorted SGS audio signals included in the microphone-received audio signals, to thereby enhance any voice-based commands included in the received audio signals.
    Type: Application
    Filed: January 22, 2020
    Publication date: May 21, 2020
    Applicant: Microchip Technology Incorporated
    Inventors: Arthur Eck, Devon Stephens
  • Patent number: 10658453
    Abstract: A method for manufacturing a thin film resistor (TFR) module in an integrated circuit (IC) structure may include forming a trench in a dielectric region; forming a TFR element in the trench, the TFR element including a laterally-extending TFR region and a TFR ridge extending upwardly from a laterally-extending TFR region; depositing at least one metal layer over the TFR element; and patterning the at least one metal layer and etching the at least one metal layer using a metal etch to define a pair of metal TFR heads over the TFR element, wherein the metal etch also removes at least a portion of the upwardly-extending TFR ridge. The method may also include forming at least one conductive TFR contact extending through the TFR element and in contact with a respective TFR head to thereby increase a conductive path between the respective TFR head and the TFR element.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: May 19, 2020
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Justin Hiroki Sato, Yaojian Leng, Greg Stom
  • Publication number: 20200149982
    Abstract: A system includes a conditioning circuit, resistors connected to pins of the conditioning circuit, and measurement sensors connected to pins of the conditioning circuit. The conditioning circuit is configured to determine resistance values of the resistors and to determine a set of addresses for the measurement sensors based upon a combination of the resistance values of the resistors.
    Type: Application
    Filed: November 6, 2019
    Publication date: May 14, 2020
    Applicant: Microchip Technology Incorporated
    Inventors: John Austin, Chihmin Yu, Ezana Haile, Sam Alexander
  • Patent number: 10652912
    Abstract: A radio arbitrator, electronic system, and method for wireless communication are disclosed in which at least two RF requests are received through a single radio module. The radio arbitrator performs predictive arbitration based on timing information known for an RF request prior to receiving the RF request. Rf requests may be based on one or more of ZigBee, Bluetooth Low Energy, or WiFi communication topologies.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: May 12, 2020
    Assignee: Microchip Technology Incorporated
    Inventor: Yifeng Yang
  • Patent number: 10649487
    Abstract: A system for testing a clock monitor includes a fault injection circuit, a control circuit, and a clock monitor circuit to evaluate a clock source signal from a clock source. The fault injection circuit is to modify or replace the clock source signal from the clock source to yield a modified clock signal, and send the modified clock signal to the clock monitor circuit. The clock monitor circuit is to receive an input clock signal, determine whether the input clock signal indicates a faulty clock source, and issue a clock corrective action if the input clock signal indicates a faulty clock source. The control circuit is to monitor for the clock corrective action, and determine, based on whether the clock corrective action is issued, whether the clock monitor circuit is operating correctly.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: May 12, 2020
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Kevin Kilzer, Aditya Nukala
  • Patent number: 10652660
    Abstract: Various embodiments relate to data packet compensation in multi-device media systems. A primary headphone device may include one or more communication interfaces configured to communicate with an audio source and a secondary headphone device. The primary headphone device may further include communication logic configured to transmit information to the secondary headphone device identifying one or more data packets received by the primary headphone device. The communication logic may also be configured to receive reporting information identifying one or more data packets missed by the secondary headphone device. Also, the communication logic may be configured to transmit compensation information for the one or more data packets missed by the secondary headphone device.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: May 12, 2020
    Assignee: Microchip Technology Incorporated
    Inventor: Shu Hao Hsu
  • Patent number: 10643568
    Abstract: A bias voltage generator circuit may include a mode control circuit, a clock generator circuit coupled with the mode control unit and configured to generate a plurality of clock signals, and a charge pump circuit configured to receive the clock signals. The charge pump circuit may be coupled with the mode control circuit and operable to output selectable output voltages according to input from the mode control circuit. The output selectable voltages may depend upon the clock signals.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: May 5, 2020
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Peter K. Nagey, Mudit Gupta, Huamin Zhou
  • Patent number: 10643887
    Abstract: A damascene thin-film resistor (TFR), e.g., a damascene thin-film resistor module formed within a poly-metal dielectric (PMD) layer using a single added mask layer, and a method for manufacturing such a device, are disclosed. A method for manufacturing a TFR structure may include forming a pair of spaced-apart TFR heads formed as self-aligned silicide poly (salicide) structures, depositing a dielectric layer over the salicide TFR heads, patterning and etching a trench extending laterally over at least a portion of each salicide TFR head and exposing a surface of each salicide TFR heads is exposed, and depositing a TFR material into the trench and onto the exposed TFR head surfaces, to thereby form a TFR layer that bridges the pair of spaced-apart TFR heads.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: May 5, 2020
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventor: Yaojian Leng
  • Publication number: 20200136539
    Abstract: Automated speed ramp control of stepper motor acceleration and deceleration using direct memory access (DMA) and core independent peripherals (CIPs) comprises a numerically controlled oscillator (NCO) controlled through direct memory access (DMA) transfers of prescale values used in combination with a clock oscillator to generate clock pulses that are a function of the clock oscillator frequency and the prescale values. This automates changing the frequency of the NCO, thereby controlling steeper motor speed, without requiring computer processing unit (CPU) overhead. The DMA module is enabled during a first number of clock pulses for step speed acceleration, disabled during a second number of clock pulses for normal operation at full step speed, and then re-enabled during a third number of clock pulses for step speed deceleration. A table in memory may store and provide a plurality of acceleration and deceleration prescale values for DMA transfers to the NCO.
    Type: Application
    Filed: January 23, 2019
    Publication date: April 30, 2020
    Applicant: Microchip Technology Incorporated
    Inventor: Keith Edwin Curtis
  • Patent number: 10635494
    Abstract: An apparatus includes processing cores, memory blocks, a connection between each of processing core and memory block, chip selection circuit, and chip selection circuit busses between the chip selection circuit and each of the memory blocks. Each memory block includes a data port and a memory check port. The chip selection circuit is configured to enable writing data from a highest priority core through respective data ports of the memory blocks. The chip selection circuit is further configured to enable writing data from other cores through respective memory check ports of the memory blocks.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: April 28, 2020
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Michael Simmons, Anjana Priya Sistla, Priyank Gupta
  • Patent number: 10635305
    Abstract: A touchscreen-based system for data entry using a language conversion is provided. The system may access a mapping database including mappings between character strings in a first language (e.g., English alphabet characters) and character objects in a second language (e.g., Chinese logograph characters). A touchscreen may display a user interface including (a) virtual input scroll wheels that display first language characters and which can be virtually scrolled by touch input to select a string of first language characters, and (b) a virtual results scroll wheel that displays second language character objects mapped to the user-selected string of first language characters, and allows the user to select (by scrolling) a particular second language character object. The selected second language character object may then be entered, e.g., by a touch-based command, into a displayed string of second language characters or into memory or to a related data processing system for further processing.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: April 28, 2020
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventor: Garry J. Champ
  • Patent number: 10637494
    Abstract: A constant current source, a stable time base and a capacitor are used to self-check operation of an analog-to-digital convertor (ADC) by charging the capacitor for a pre-determined amount of time to produce a voltage thereon. This voltage will be proportional to the amount of time that the capacitor was charged. Multiple points on the ADC transfer function can be verified in this self-check procedure simply by varying the amount of time for charging of the capacitor. Relative accuracy among test points may then be easily obtained. Absolute accuracy may be obtained by using an accurate clock reference for the time base, a known current source and capacitor value.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: April 28, 2020
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: James E. Bartling, Stephen Bowling
  • Publication number: 20200119706
    Abstract: An operational amplifier with totem pole connected output transistors having inputs coupled to multiplexers for selectable coupling of signals and voltage levels thereto. The high and low output transistors may be forced hard on or hard off in addition to normal coupling of signals thereto. The operation of the output transistors may be dynamically changed to pass only positive going signals, negative going signals, placed in a tristate high impedance state, hard connected to a supply voltage and/or hard connected to supply common return. A core independent peripheral (CIP) may also be coupled to the operational amplifier for dynamically changing the multiplexer inputs in real time, as can external control signals to a control circuit coupled to the multiplexers.
    Type: Application
    Filed: May 14, 2019
    Publication date: April 16, 2020
    Applicant: Microchip Technology Incorporated
    Inventors: Keith Edwin Curtis, Ward Brown, John Charais, Steve Kennelly, Dave Suda, Huamin Zhou, Clark Rogers, Mudit Gupta
  • Patent number: 10620881
    Abstract: An apparatus includes an interface for dynamic random access memory (DRAM); and an integrated circuit. The integrated circuit includes a memory pinout configured to connect to the memory and control logic. The control logic is configured multiplex address information, command information, and data to be written to or read from the DRAM memory on a subset of pins of the memory pinout to the DRAM memory. The control logic is further configured to route other signals on other pins of the memory pinout to the DRAM in parallel with the multiplexed address information, command information, and data information.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: April 14, 2020
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Eric Matulik, Patrick Filippi, Marc Maunier
  • Patent number: 10615821
    Abstract: A method includes receiving samples of digital to analog converter (DAC), partitioning the samples to unit-DACs based upon previous partitions of inputs to the unit-DACs to cancel out integrated non-linearities of outputs of the DAC caused by the gain mismatches of the unit-DACs, including partitioning samples of DAC input to the unit-DACs through a recursive nth order partitioning algorithm. The algorithm includes, for each DAC input, determining a first partition of the DAC input that would cancel an (n?1)th order previously integrated non-linearity, adding an equivalent DAC input of the first partition to the DAC input to obtain a total DAC input, using a first order application of the total DAC input to the inputs of the unit-DACs to yield a second partition of DAC input, summing the first and second partitions generate a final partition, and, based on the final partition, computing non-linearity remainders at each order of integration.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: April 7, 2020
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Vincent Quipuempoix, Eve Carletti
  • Patent number: 10609535
    Abstract: The present invention provides a blue-tooth communication system and broadcasting methods thereof. The broadcasting method includes: firstly, detecting N blue-tooth receivers in a blue-tooth range of a blue-tooth transmitter, wherein N is a positive integer; and broadcasting a data package by the blue-tooth transmitter in a first transmission timing window; then respectively receiving N acknowledgement packages from the blue-tooth receiver by the blue-tooth transmitter in a plurality of reception timing windows.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: March 31, 2020
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Li-Wei Chang, Chung-I Lee
  • Publication number: 20200091822
    Abstract: A power converter includes a buck leg circuit connected between a voltage input of the power converter and ground, a boost leg circuit connected between a voltage output of the power converter and ground, an inductor connected between the buck leg circuit and the boost leg circuit, an error amplifier configured to compare the voltage output of the power converter against a reference voltage to yield a feedback signal, and a control circuit. The control circuit is configured to generate a reference buck ramp configured to be compared against the feedback signal to determine whether to operate the buck leg circuit in buck mode, and to generate a reference boost ramp by superposing a variable boost ramp portion on to the reference buck ramp, the reference boost ramp configured to be compared against the feedback signal to determine whether to operate the boost leg circuit in boost mode.
    Type: Application
    Filed: September 9, 2019
    Publication date: March 19, 2020
    Applicant: Microchip Technology Incorporated
    Inventors: Jiong Ou, Scott Dearborn
  • Patent number: 10595275
    Abstract: In a wireless media network a source device provides entertainment content to a sink device over a radio frequency (RF) wireless channel. The source device can go into a receive only quiet enrolment mode until activated by a sink device transmitting enrolment trigger packets or having a signal strength above a certain threshold, thereby improving coexistence with other wireless devices. The source device changes from the quiet enrolment mode to an active enrolment mode when activated by the sink device.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: March 17, 2020
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Ralph Mason, Andrew Burns, Chengbin Fan
  • Publication number: 20200083794
    Abstract: Adaptive slope compensation for current mode control in a switch mode power supply converter is computed for every switching cycle based upon the input voltage and duty-cycle whereby the quality factor is maintained at a constant value. A digital signal processing (DSP) capable microcontroller comprises a voltage loop compensator and generates a desired current reference for every switching cycle. Slope calculations are adapted for switching frequency, inductance value, current circuit gain, etc. The slope calculation result is applied to a pulse-digital-modulation (PDM) digital-to-analog converter (DAC) capable of changing its output levels at a very fast rate compared to the power supply switching frequency whereby the required current slope is provided within the switching period. Actual inductor current may be used to compare against the slope reference, thereby taking care of changes in the inductance values under load. The slope levels are automatically changed when the switching frequency is changed.
    Type: Application
    Filed: May 31, 2019
    Publication date: March 12, 2020
    Applicant: Microchip Technology Incorporated
    Inventors: Santosh Manjunath Bhandarkar, Alex Dumais
  • Patent number: 10581443
    Abstract: Offset correction in a differential successive approximation register (SAR) analog-to-digital converter (ADC) is accomplished with a capacitor-reduced digital-to-analog converter (DAC) topology to enable offset correction without the need for a dedicated compensation DAC. This eliminates addition analog circuitry and die area. To perform the offset correction, the differential SAR ADC couples together inputs thereof to create an offset voltage, converts the offset voltage into a digital representation thereof, stores the digital representation of the offset voltage in an offset register, and corrects for the offset voltage by generating an offset compensation voltage with the capacitor-reduced array DAC controlled by the digital representation stored in the offset register. The digital representation controls scaling of reference voltages to the reduced capacitor array DAC associated with a least-significant-bit (LSB) of the differential SAR ADC.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: March 3, 2020
    Assignee: Microchip Technology Incorporated
    Inventors: Anders Vinje, Ivar L√łkken