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1. 发明授权

US10516356B2 Stepper trajectory driver with numerical controlled oscillators operated at frequency provided by a synchronized clock signal 有权
公开(公告)号：US10516356B2
公开(公告)日：2019-12-24
申请号：US16139155
申请日：2018-09-24
申请人： Microchip Technology Incorporated
发明人： Keith Curtis
IPC分类号： H02P8/40 , H02P8/14 , G05B19/40 , H02P8/34
摘要： A stepper control circuit includes numerical controlled oscillators configured to provide step signals for multiple axes of stepper motor movement. The numerical controlled oscillators are configured to be operated at a same frequency provided by a synchronized clock signal.

2. 发明授权

US10317528B2 Core independent ultrasonic proximity sensing peripheral 有权
公开(公告)号：US10317528B2
公开(公告)日：2019-06-11
申请号：US15447532
申请日：2017-03-02
申请人： Microchip Technology Incorporated
发明人： Keith Curtis , Kristine Angelica Sumague , Anthony Stram
IPC分类号： G01S15/00 , G01S15/08 , G01S15/58 , G01S7/523 , G01S15/10
摘要： A proximity sensing function is implemented using a collection of core independent peripherals (CIPs) in a microcontroller without software overhead to the central processor during operation thereof. A pulse width modulation (PWM) peripheral generates a high frequency drive signal that is on for a short duration to an ultrasonic transmitting transducer. An ultrasonic receiving transducer receives reflected ultrasonic pulses during an integration time window. The received pulses are detected and integrated into a voltage value. The integrated voltage value is compared to a prior voltage value average, and if different, generates a proximity sense signal of an object. Direction, distance and speed of the object may also be determined from the voltage values.

3. 发明授权

US10283973B2 Balanced battery charging system 有权
公开(公告)号：US10283973B2
公开(公告)日：2019-05-07
申请号：US15483685
申请日：2017-04-10
申请人： Microchip Technology Incorporated
发明人： Keith Curtis
IPC分类号： H02J7/00 , H01M10/42 , H01M10/44 , H01M10/48
摘要： A multi-cell battery pack charging system adjusts each battery cell's charging current to synchronize the completion of charge. The battery pack is charged as a whole, and need only be charged once, and without requiring charge shuttling, resistive charge balancing or inductive charge dumping. Charging current to each battery cell is based on voltage matching of the battery cells being charged, lower voltage battery cells being given more charge current until there is a voltage match to the other series connected battery cells. Additional charge may be given to higher capacity cells of the battery pack during the voltage matching and charging process.

4. 发明申请

US20160253233A1 Watchdog Timer 审中-公开
标题翻译：看门狗定时器
公开(公告)号：US20160253233A1
公开(公告)日：2016-09-01
申请号：US15053504
申请日：2016-02-25
申请人： Microchip Technology Incorporated
发明人： Keith Curtis
IPC分类号： G06F11/07
CPC分类号： G06F11/0757 , G06F11/0721
摘要： A microcontroller may comprise a central processing unit coupled with a plurality of peripheral devices through a system bus; and a watchdog timer unit receiving a clear watchdog signal and being configured to generate a watchdog timeout signal for resetting the microcontroller, wherein the watchdog timer unit is further configured to define a first and a second watchdog timeout period through a first and a second timer, respectively, further having logic to select the first or the second timer, wherein the clear watchdog signal resets the first and second timer.
摘要翻译：微控制器可以包括通过系统总线与多个外围设备耦合的中央处理单元; 以及看门狗定时器单元，其接收清除看门狗信号并且被配置为产生用于复位微控制器的看门狗超时信号，其中所述看门狗定时器单元还被配置为通过第一和第二定时器定义第一和第二看门狗超时周期，分别还具有选择第一或第二定时器的逻辑，其中清除看门狗信号复位第一和第二定时器。

5. 发明授权

US09257980B2 Measuring capacitance of a capacitive sensor with a microcontroller having digital outputs for driving a guard ring 有权
标题翻译：使用具有用于驱动保护环的数字输出的微控制器测量电容式传感器的电容
公开(公告)号：US09257980B2
公开(公告)日：2016-02-09
申请号：US13633523
申请日：2012-10-02
申请人： Microchip Technology Incorporated
发明人： Zeke Lundstrum , Keith Curtis , Burke Davison , Sean Steedman , Yann LeFaou
IPC分类号： G06F3/041 , H03K17/96
CPC分类号： H03K17/9622 , H03K2217/960725 , H03K2217/960765 , H03K2217/96077
摘要： A guard ring is provided around each capacitive sensor plate and charged to substantially the same voltage as a voltage on the capacitive sensor plate. The guard ring reduces parasitic capacitances of the capacitive sensor plate caused by differences in voltage potentials between the capacitive sensor plate, and adjacent circuit conductors, ground planes and power planes. Two digital outputs and associated voltage divider resistors are used to drive the guard ring voltage to substantially the same voltage as the voltage on the capacitive sensor plate.
摘要翻译：在每个电容传感器板周围设置保护环，并将其充电到与电容式传感器板上的电压基本相同的电压。保护环降低由电容式传感器板和相邻的电路导体，接地层和电源平面之间的电位差的差异引起的电容传感器板的寄生电容。两个数字输出和相关的分压电阻用于将保护环电压驱动到与电容传感器板上的电压基本相同的电压。

6. 发明授权

US09252769B2 Microcontroller with optimized ADC controller 有权
标题翻译：具有优化ADC控制器的微控制器
公开(公告)号：US09252769B2
公开(公告)日：2016-02-02
申请号：US13633616
申请日：2012-10-02
申请人： Microchip Technology Incorporated
发明人： Zeke Lundstrum , Keith Curtis , Burke Davison , Sean Steedman , Yann LeFaou
IPC分类号： H03M1/00 , H03K17/96
CPC分类号： H03K17/9622 , H03K2217/960705 , H03K2217/960725 , H03K2217/960765
摘要： An analog-to-digital (ADC) controller is used in combination with a digital processor of a microcontroller to control the operation of capacitance measurements using the capacitive voltage division (CVD) method. The ADC controller handles the CVD measurement process instead of the digital processor having to run additional program steps for controlling charging and discharging of a capacitive touch sensor and sample and hold capacitor, then coupling these two capacitors together, and measuring the resulting voltage charge thereon in determining the capacitance thereof. The ADC controller may be programmable and its programmable parameters stored in registers.
摘要翻译：模拟数字（ADC）控制器与微控制器的数字处理器组合使用，以使用电容分压（CVD）方法控制电容测量的操作。 ADC控制器处理CVD测量过程，而不是数字处理器必须运行额外的程序步骤，用于控制电容式触摸传感器和采样和保持电容器的充电和放电，然后将这两个电容器耦合在一起，并测量其上产生的电压电荷确定其电容。 ADC控制器可以是可编程的，其可编程参数存储在寄存器中。

7. 发明申请

US20170294788A1 Balanced Battery Charging System 审中-公开
公开(公告)号：US20170294788A1
公开(公告)日：2017-10-12
申请号：US15483685
申请日：2017-04-10
申请人： Microchip Technology Incorporated
发明人： Keith Curtis
IPC分类号： H02J7/00
CPC分类号： H02J7/0016 , H01M10/4207 , H01M10/441 , H01M10/482 , H01M2010/4271 , H02J7/0018 , H02J7/0021 , H02J7/0055 , H02J7/007 , H02J7/0072
摘要： A multi-cell battery pack charging system adjusts each battery cell's charging current to synchronize the completion of charge. The battery pack is charged as a whole, and need only be charged once, and without requiring charge shuttling, resistive charge balancing or inductive charge dumping. Charging current to each battery cell is based on voltage matching of the battery cells being charged, lower voltage battery cells being given more charge current until there is a voltage match to the other series connected battery cells. Additional charge may be given to higher capacity cells of the battery pack during the voltage matching and charging process.

8. 发明授权

US09785263B2 Touch screen stylus with force and/or angle sensing functionality 有权
公开(公告)号：US09785263B2
公开(公告)日：2017-10-10
申请号：US14462242
申请日：2014-08-18
申请人： Microchip Technology Incorporated
发明人： Keith Curtis
IPC分类号： G06F3/0354 , G06F3/044 , G06F3/0338 , G06F3/041
CPC分类号： G06F3/03546 , G06F3/0338 , G06F3/03545 , G06F3/0412 , G06F3/0414 , G06F3/044
摘要： A handheld stylus for use with a display device may include a handheld body, a tip movably coupled to the body, and at least one capacitive sensor configured to detect movements of the tip relative to the body. The at least one capacitive sensor may comprise at least one first conductive element secured to or integral with the body, and at least one second conductive element secured to or integral with the movable tip. The tip may be arranged such that the at least one first conductive element and the at least one second conductive element are spaced apart from each other. The at least one capacitive sensor may be configured to detect changes in respective distances between the at least one first conductive element and the at least one second conductive element caused by movements of the tip relative to the body.

9. 发明申请

US20170254900A1 Core Independent Ultrasonic Proximity Sensing Peripheral 审中-公开
公开(公告)号：US20170254900A1
公开(公告)日：2017-09-07
申请号：US15447532
申请日：2017-03-02
申请人： Microchip Technology Incorporated
发明人： Keith Curtis , Kristine Angelica Sumague , Anthony Stram
IPC分类号： G01S15/08 , G01S15/58
CPC分类号： G01S15/08 , G01S7/523 , G01S15/10 , G01S15/58
摘要： A proximity sensing function is implemented using a collection of core independent peripherals (CIPs) in a microcontroller without software overhead to the central processor during operation thereof. A pulse width modulation (PWM) peripheral generates a high frequency drive signal that is on for a short duration to an ultrasonic transmitting transducer. An ultrasonic receiving transducer receives reflected ultrasonic pulses during an integration time window. The received pulses are detected and integrated into a voltage value. The integrated voltage value is compared to a prior voltage value average, and if different, generates a proximity sense signal of an object. Direction, distance and speed of the object may also be determined from the voltage values.

10. 发明授权

US09673868B2 Wireless door lock power transfer system having communications capabilities 有权
公开(公告)号：US09673868B2
公开(公告)日：2017-06-06
申请号：US14278420
申请日：2014-05-15
申请人： Microchip Technology Incorporated
发明人： Keith Curtis
IPC分类号： H02J7/00 , H04B5/00 , H01F38/14 , H02J5/00 , H02J17/00 , H02J7/02 , G07C9/00 , E05B47/00
CPC分类号： H04B5/0037 , E05B47/0001 , E05B2047/0061 , G07C9/00174 , G07C9/00309 , G07C9/00944 , G07C2009/00634 , G07C2009/00777 , G07C2009/00809 , H01F38/14 , H01F2038/146 , H02J5/005 , H02J7/025 , H02J17/00 , H02J50/12
摘要： A door frame has a first electromagnetic coil and a door lock has a second electromagnetic coil with a door bolt electromagnetically coupling together the first and second electromagnetic coils, thereby forming a transformer. Power is transferred from the door frame to door lock through the transformer. Communications from the door frame to the door lock may be provided by modulating electromagnetic energy to the first electromagnetic coil and demodulating the modulated electromagnetic energy received at the second electromagnetic coil. Communications from the door lock to the door frame may be provided by varying a load on the second electromagnetic coil and detecting the load change at the first electromagnetic coil.

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