公开(公告)号：US10069488B2

公开(公告)日：2018-09-04

申请号：US14669321

申请日：2015-03-26

Applicant: Microchip Technology Incorporated

Inventor： Sean Stacy Steedman ,  Yong Yuenyongsgool ,  Jacobus Albertus van Eeden ,  Joseph Julicher ,  Marilena Dracea

IPC: H03K4/06 ,  H03K4/50 ,  H03K4/502

Abstract: A digitally controlled ramp generator has a constant current source, a first controllable switch coupled between the constant current source and an output node, a capacitor coupled with the output node, a second controllable switch coupled with the output node, a constant current sink coupled with the second controllable switch, and a control unit. The control unit is configured in a first operating mode to select control signals for the first and second controllable switch to generate a rising waveform by charging said capacitor through the first controllable switch and a falling waveform by discharging the capacitor through the second controllable switch wherein the control signals can be selected from the group of a time based control signal and a voltage based control signal. A variety of other control modes may be provided.

公开(公告)号：US10048089B2

公开(公告)日：2018-08-14

申请号：US14608753

申请日：2015-01-29

Applicant: Microchip Technology Incorporated

Inventor： Joseph Julicher ,  Kevin Kilzer ,  Cobus Van Eeden

IPC: G01D5/26 ,  G01D5/14 ,  G01P3/481 ,  G01P3/489 ,  H03K21/38 ,  H02P23/22 ,  G01P3/486 ,  G01P3/488 ,  H02P6/16 ,  G01D5/245

Abstract: A system may have a digital period divider generating an output signal that is proportional to an angle defined by a rotational input signal and an interval measurement unit determining an interval time of an interval defined by succeeding pulses of the input output signal. In an enhancement, the system may also have a missing pulse detector which is operable to compare a current interval with a parameter to determine whether a pulse is missing in the input signal.

公开(公告)号：US09210769B2

公开(公告)日：2015-12-08

申请号：US13831637

申请日：2013-03-15

Applicant: Microchip Technology Incorporated

Inventor： Joseph Julicher ,  Jerrold S. Zdenek

IPC: H05B37/02 ,  H05B39/04 ,  H05B41/36 ,  H05B33/08

CPC classification number: H05B37/02 ,  H05B33/0818 ,  H05B33/0845 ,  Y02B20/346

Abstract: A light emitting diode (LED) is driven with a plurality of pulses having controllable pulse widths and positions within clock time periods that provide for both LED light intensity control and digital information communications from a single output node of an integrated circuit (IC) device. The LED light intensity is determined by the duty cycle of the pulses where the human eye integrates these light pulses from the LED into continuous light intensity levels. The digital information contained in the light output from the LED is detected by a photo-detector that converts the light pulses into electric signals that are demodulated and read by a circuit debugger and/or manufacturing test station. The aforementioned operations allow continuous visual display and data transmission using only one output node of the IC device. This is especially advantageous when using low pin count IC devices.

Abstract translation: 发光二极管（LED）由具有可控脉冲宽度的脉冲和在时钟周期内的位置驱动，多个脉冲提供来自集成电路（IC）装置的单个输出节点的LED光强度控制和数字信息通信。 LED光强度由人眼将这些光脉冲从LED整合为连续光强度的脉冲的占空比确定。 包含在LED的光输出中的数字信息由光检测器检测，该光检测器将光脉冲转换成由电路调试器和/或制造测试台解调和读取的电信号。 上述操作允许仅使用IC器件的一个输出节点进行连续可视显示和数据传输。 当使用低引脚数IC器件时，这是特别有利的。

公开(公告)号：US08898356B2

公开(公告)日：2014-11-25

申请号：US13841439

申请日：2013-03-15

Applicant: Microchip Technology Incorporated

Inventor： Joseph Julicher ,  Pieter Schieke ,  Vivien Delport

IPC: G06F3/00 ,  G06F13/12 ,  G06F13/38 ,  G06F13/10

CPC classification number: G06F13/10 ,  G06F1/266 ,  G06F13/4072 ,  G06F13/4291 ,  H04B3/542 ,  H04B3/548

Abstract: An electronic device including a host system including a source; and a target system operably coupled to the host system via a combined power I/O line; wherein the target system includes a pass transistor and a switching system cooperative to allow the source to charge a power supply capacitor on the target system via the combined power I/O line in a first mode and alternately charge and discharge the power supply capacitor during a communication via the combined power I/O line in a second mode, wherein the alternately charging and discharging is in synchronization with said communication.

Abstract translation: 一种电子设备，包括：包括源的主机系统; 以及经由组合电力I / O线可操作地耦合到所述主机系统的目标系统; 其中所述目标系统包括传输晶体管和开关系统协作以允许所述源以第一模式经由所述组合功率I / O线对所述目标系统上的电源电容器充电，并且在所述第一模式期间交替地对所述电源电容器进行充电和放电 在第二模式中通过组合电源I / O线进行通信，其中交替充电和放电与所述通信同步。

公开(公告)号：US20140270048A1

公开(公告)日：2014-09-18

申请号：US14200317

申请日：2014-03-07

Applicant: Microchip Technology Incorporated

Inventor： Joseph Julicher ,  Kevin Kilzer ,  Cobus Van Eeden

IPC: H03K23/00

CPC classification number: H03K23/00 ,  G01P3/481 ,  G01P3/486 ,  G01P3/487 ,  G01P3/488 ,  G01P3/489 ,  H02P6/17 ,  H03K21/38 ,  H03K23/40

Abstract: A digital period divider has a first counter with R least significant bits (LSB) and P most significant bits (MSB) having a count input and a reset input, wherein the count input receives a first clock signal and the reset input receives a second clock signal; a latch having P bits and being coupled with the P bits of the first counter; a second counter having P bits and a count input and a reset input, wherein the count input receives the first clock signal; and a first comparator operable to compare the P bits of the latch with the P bits of the second counter and generating an output signal, wherein the output signal is also fed to the reset input of the second counter.

Abstract translation: 数字周期分配器具有具有R个最低有效位（LSB）和P个最高有效位（MSB）的第一计数器，其具有计数输入和复位输入，其中所述计数输入接收第一时钟信号，并且所述复位输入接收第二时钟 信号; 具有P位并与第一计数器的P位耦合的锁存器; 具有P位和计数输入和复位输入的第二计数器，其中所述计数输入接收所述第一时钟信号; 以及第一比较器，用于将锁存器的P位与第二计数器的P位进行比较并产生输出信号，其中输出信号也被馈送到第二计数器的复位输入。

公开(公告)号：US20140265866A1

公开(公告)日：2014-09-18

申请号：US13831637

申请日：2013-03-15

Applicant: MICROCHIP TECHNOLOGY INCORPORATED

Inventor： Joseph Julicher ,  Jerrold S. Zdenek

IPC: H05B37/02

CPC classification number: H05B37/02 ,  H05B33/0818 ,  H05B33/0845 ,  Y02B20/346

Abstract: A light emitting diode (LED) is driven with a plurality of pulses having controllable pulse widths and positions within clock time periods that provide for both LED light intensity control and digital information communications from a single output node of an integrated circuit (IC) device. The LED light intensity is determined by the duty cycle of the pulses where the human eye integrates these light pulses from the LED into continuous light intensity levels. The digital information contained in the light output from the LED is detected by a photo-detector that converts the light pulses into electric signals that are demodulated and read by a circuit debugger and/or manufacturing test station. The aforementioned operations allow continuous visual display and data transmission using only one output node of the IC device. This is especially advantageous when using low pin count IC devices.

Abstract translation: 发光二极管（LED）由具有可控脉冲宽度的脉冲和在时钟周期内的位置驱动，多个脉冲提供来自集成电路（IC）装置的单个输出节点的LED光强度控制和数字信息通信。 LED光强度由人眼将这些光脉冲从LED整合为连续光强度的脉冲的占空比确定。 包含在LED的光输出中的数字信息由光检测器检测，该光检测器将光脉冲转换成由电路调试器和/或制造测试台解调和读取的电信号。 上述操作允许仅使用IC器件的一个输出节点进行连续可视显示和数据传输。 当使用低引脚数IC器件时，这是特别有利的。

公开(公告)号：US20130154657A1

公开(公告)日：2013-06-20

申请号：US13667196

申请日：2012-11-02

Applicant: Microchip Technology Incorporated

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

IPC: G01N27/22

CPC classification number: G01N27/221 ,  G01N27/66 ,  G01R27/2605 ,  G08B17/11

Abstract: A smoke detection sensor ion chamber has a capacitance and a change in the permittivity of that capacitance dielectric (ionized air in the chamber) may be used to detect the presence of smoke therein. 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 in the permittivity thereof that is large enough to measure by measuring a change in capacitance of the ion chamber.

公开(公告)号：US20130088238A1

公开(公告)日：2013-04-11

申请号：US13633686

申请日：2012-10-02

Applicant: MICROCHIP TECHNOLOGY INCORPORATED

Inventor： Joseph Julicher ,  Keith Curtis ,  Paul N. Katz

IPC: G01N27/66

CPC classification number: G08B17/11 ,  G01N27/66 ,  G08B17/113

Abstract: An ion chamber provides a current representative of its characteristics as affected by external conditions, e.g., clean air or smoke. A direct current (DC) voltage is applied to the ion chamber at a first polarity and the resulting current through the ion chamber and parasitic leakage current is measured at the first polarity, then the DC voltage is applied to the ion chamber at a second polarity opposite the first polarity, and the resulting current through the ion chamber and parasitic leakage current is measured at the second polarity. Since substantially no current flows through the ion chamber at the second polarity, the common mode parasitic leakage current contribution may be removed from the total current measurement by subtracting the current measured at the second polarity from the current measured at the first polarity, resulting in just the current through the ion chamber.

Abstract translation: 离子室提供代表其受外部条件（例如清洁空气或烟雾）影响的其特性的电流。 直流（DC）电压以第一极性施加到离子室，并且通过离子室产生的电流和寄生漏电流以第一极性被测量，然后将直流电压以第二极性施加到离子室 与第一极性相反，并且在第二极性处测量通过离子室的所得电流和寄生漏电流。 由于基本上没有电流以第二极性流过离子室，所以可以从总电流测量中去除从第一极性测得的电流以第二极性测量的电流来消除共模寄生漏电流贡献，从而产生正好 电流通过离子室。

公开(公告)号：US20160098909A1

公开(公告)日：2016-04-07

申请号：US14967930

申请日：2015-12-14

Applicant: Microchip Technology Incorporated

Inventor： Joseph Julicher ,  Keith Curtis ,  Paul N. Katz

IPC: G08B17/113

CPC classification number: G08B17/11 ,  G01N27/66 ,  G08B17/113

Abstract: An ion chamber provides a current representative of its characteristics as affected by external conditions, e.g., clean air or smoke. A direct current (DC) voltage is applied to the ion chamber at a first polarity and the resulting current through the ion chamber and parasitic leakage current is measured at the first polarity, then the DC voltage is applied to the ion chamber at a second polarity opposite the first polarity, and the resulting current through the ion chamber and parasitic leakage current is measured at the second polarity. Since substantially no current flows through the ion chamber at the second polarity, the common mode parasitic leakage current contribution may be removed from the total current measurement by subtracting the current measured at the second polarity from the current measured at the first polarity, resulting in just the current through the ion chamber.

Abstract translation: 离子室提供代表其受外部条件（例如清洁空气或烟雾）影响的其特性的电流。 直流（DC）电压以第一极性施加到离子室，并且通过离子室产生的电流和寄生漏电流以第一极性被测量，然后将直流电压以第二极性施加到离子室 与第一极性相反，并且在第二极性处测量通过离子室的所得电流和寄生漏电流。 由于基本上没有电流以第二极性流过离子室，所以可以从总电流测量中去除从第一极性测得的电流以第二极性测量的电流来消除共模寄生漏电流贡献，从而产生正好 电流通过离子室。

公开(公告)号：US09207209B2

公开(公告)日：2015-12-08

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 ,  G08B17/11 ,  H03M3/00 ,  G08B29/18

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。