公开(公告)号：US11379398B2

公开(公告)日：2022-07-05

申请号：US16550648

申请日：2019-08-26

Applicant: Microchip Technology Incorporated

Inventor： Keith Edwin Curtis ,  Stephen Matthew Cowden

IPC: G06F13/40

Abstract: A microcontroller has a central processing unit and a plurality of peripheral units and a plurality of port bit circuits provided through at least one input/output port. At least one port bit circuit of the plurality of port bit circuits is not connected to an external pin and the at least one port bit circuit is configurable to route a signal received at the port bit circuit to a selected peripheral of the microcontroller.

公开(公告)号：US20220184433A1

公开(公告)日：2022-06-16

申请号：US17501449

申请日：2021-10-14

Applicant: Microchip Technology Incorporated

Inventor： Keith Edwin Curtis

IPC: A62B23/02 ,  A61L9/20 ,  A62B9/00 ,  A62B18/00 ,  A62B7/10 ,  B01D45/16 ,  B04C9/00 ,  B04C11/00 ,  B03C3/15 ,  B03C3/68 ,  B01D53/00 ,  B01D53/44 ,  B01D53/34 ,  B01D46/00 ,  B01D50/00 ,  F24F8/192 ,  F24F8/22

Abstract: An air treatment system includes a cyclone filter and an electrostatic filtration system. The cyclone filter may include a cyclone chamber, a cyclone chamber inlet configured to receive air including suspended particulates, and a cyclone chamber outlet configured to output treated air toward a respiratory interface, e.g., a mask or face shield. The cyclone filter produces a rotational airflow that removes at least some particulates from the air in the cyclone filter. The electrostatic filtration system is configured to charge the particulates in the cyclone chamber with a first polarity to produce an electrostatic attraction of the particulates to a particulate removal system charged with an opposite second polarity, to remove additional particulates from the cyclone filter. The air treatment system may also include an ultraviolet purification system to deliver ultraviolet radiation (e.g., UVC radiation) to kill, destroy or otherwise affect organic particulates in the air being treated.

公开(公告)号：US11323052B2

公开(公告)日：2022-05-03

申请号：US16254797

申请日：2019-01-23

Applicant: Microchip Technology Incorporated

Inventor： Keith Edwin Curtis

IPC: H02P8/00 ,  H02P8/14 ,  G05B19/416

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.

公开(公告)号：US10983936B2

公开(公告)日：2021-04-20

申请号：US16377439

申请日：2019-04-23

Applicant: Microchip Technology Incorporated

Inventor： Keith Edwin Curtis

IPC: G06F13/28 ,  G06F12/02 ,  G06F12/1081

Abstract: A programmable arbitrary sequence direct memory access (DMA) controller accesses sequentially addressed memory locations (source or destination) using address pointer registers. Each sequentially addressed memory location containing an indirect memory address is stored in an address latch and used to access the actual non-sequential memory location to be accessed by the DMA transfer.

公开(公告)号：US20210112372A1

公开(公告)日：2021-04-15

申请号：US16707156

申请日：2019-12-09

Applicant: Microchip Technology Incorporated

Inventor： Enrique Aleman ,  Monte Denton ,  Keith Edwin Curtis

IPC: H04W4/029 ,  G01S5/00 ,  B60N3/04 ,  H04W4/80 ,  G01S5/14

Abstract: A vehicle movement tracking system that employs floor mats having ridges for generating location information in the form of modulated vibrations, detectable with an accelerometer. Two sensors are in a wheel of a vehicle. One sensor senses wheel rotation, and the other sensor senses vertical acceleration. The vehicle passes over a floor mat comprising vertically elevated ridges thereon that code the mat and thereby indicate the location at which the mat is at. When the vehicle travels over this mat the vertical acceleration sensor in the wheel detects the vertically elevated ridges and the wheel rotation sensor detects the distance between the vertically elevated ridges. In combination these two sensors are used to create a location word that denotes the mat over which the vehicle passes over. The location word is stored in non-volatile memory and later uploaded to a location collection station.

公开(公告)号：US09542009B2

公开(公告)日：2017-01-10

申请号：US13839883

申请日：2013-03-15

Applicant: Microchip Technology Incorporated

Inventor： Keith Edwin Curtis

IPC: G06F3/0338 ,  G06F3/044 ,  G06F3/0362 ,  H03K17/96 ,  H03K17/98

CPC classification number: G06F3/0338 ,  G06F3/0362 ,  G06F3/044 ,  H03K17/9622 ,  H03K17/98 ,  H03K2217/96031 ,  H03K2217/96066

Abstract: A knob or joystick apparatus detects gesture based actions of a user's fingers and/or hand. A user grasps the knob or joystick and moves the knob or joystick in either rotational direction, e.g., clockwise or counter clockwise, moves the knob or joystick horizontally/vertically or any combination thereof, and/or presses or pulls the knob or joystick in or out. Capacitive sensors are used in combination with a digital device, e.g., microcontroller, for detecting, decoding and interpreting therefrom various gesturing movements. A user may grasp a knob and either moves his/her fingers in a rotational, horizontal/vertical, and/or in/out movement(s) along an axis of the knob. During the motion(s) of the user's fingers, portions of an outer covering of the knob are deflected inwards toward capacitive sensors, wherein the movement(s) of the deflected portion(s) of the outer covering are detected, decoded and interpretations are made therefrom of various gesturing movements.

Abstract translation: 旋钮或操纵杆装置检测用户手指和/或手的基于姿势的动作。 用户握住旋钮或操纵杆，并沿旋转方向（例如顺时针或逆时针）移动旋钮或操纵杆，水平/垂直移动旋钮或操纵杆或其任何组合，和/或按压或拉动旋钮或操纵杆或 出来 电容式传感器与诸如微控制器的数字设备结合使用，用于检测，解码和解释各种手势运动。 用户可以抓住旋钮并且沿着旋钮的轴线以旋转，水平/垂直和/或进/出运动移动他/她的手指。 在用户手指的运动期间，旋钮的外部覆盖物的部分朝向电容传感器向内偏转，其中检测，解码和解释外部覆盖物的偏转部分的运动， 由各种手势运动制成。

公开(公告)号：US20140267039A1

公开(公告)日：2014-09-18

申请号：US13839883

申请日：2013-03-15

Applicant: MICROCHIP TECHNOLOGY INCORPORATED

Inventor： Keith Edwin Curtis

IPC: G06F3/0338

CPC classification number: G06F3/0338 ,  G06F3/0362 ,  G06F3/044 ,  H03K17/9622 ,  H03K17/98 ,  H03K2217/96031 ,  H03K2217/96066

Abstract: A knob or joystick apparatus detects gesture based actions of a user's fingers and/or hand. A user grasps the knob or joystick and moves the knob or joystick in either rotational direction, e.g., clockwise or counter clockwise, moves the knob or joystick horizontally/vertically or any combination thereof, and/or presses or pulls the knob or joystick in or out. Capacitive sensors are used in combination with a digital device, e.g., microcontroller, for detecting, decoding and interpreting therefrom various gesturing movements. A user may grasp a knob and either moves his/her fingers in a rotational, horizontal/vertical, and/or in/out movement(s) along an axis of the knob. During the motion(s) of the user's fingers, portions of an outer covering of the knob are deflected inwards toward capacitive sensors, wherein the movement(s) of the deflected portion(s) of the outer covering are detected, decoded and interpretations are made therefrom of various gesturing movements.

Abstract translation: 旋钮或操纵杆装置检测用户手指和/或手的基于姿势的动作。 用户握住旋钮或操纵杆，并沿旋转方向（例如顺时针或逆时针）移动旋钮或操纵杆，水平/垂直移动旋钮或操纵杆或其任何组合，和/或按压或拉动旋钮或操纵杆或 出来 电容式传感器与诸如微控制器的数字设备结合使用，用于检测，解码和解释各种手势运动。 用户可以抓住旋钮并且沿着旋钮的轴线以旋转，水平/垂直和/或进/出运动移动他/她的手指。 在用户手指的运动期间，旋钮的外部覆盖物的部分朝向电容式传感器向内偏转，其中外部覆盖物的偏转部分的移动被检测，解码和解释是 由各种手势运动制成。

公开(公告)号：US20130154659A1

公开(公告)日：2013-06-20

申请号：US13667165

申请日：2012-11-02

Applicant: Microchip Technology Incorporated

Inventor： Benjamin T. Cooke ,  Joseph Julicher ,  Keith Edwin Curtis

IPC: G01N27/66

CPC classification number: G01N27/66 ,  G08B17/11 ,  G08B29/181 ,  H03M3/30

Abstract: A smoke detection sensor ion chamber has a leakage current that is dependent upon the permittivity of the ionized gas (air) in the chamber. Smoke from typical fires is mainly composed of unburned carbon that has diffused in the surrounding air and rises with the heat of the fire. The permittivity of the carbon particles is about 10 to 15 times the permittivity of clean air. The addition of the carbon particles into the air in the ion chamber changes the permittivity thereof that is large enough to detect by measuring a change in the leakage current of the ion chamber.

Abstract translation: 烟雾检测传感器离子室具有取决于室中的电离气体（空气）的介电常数的泄漏电流。 典型火灾中的烟雾主要由在周围空气中扩散并随火的升高而升高的未燃碳组成。 碳颗粒的介电常数为清洁空气介电常数的约10至15倍。 将离子室中的碳颗粒添加到空气中通过测量离子室的泄漏电流的变化来改变其介电常数，其大到足以检测。