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1. 发明授权

US06882235B2 Highly stable integrated time reference 失效
公开(公告)号：US06882235B2
公开(公告)日：2005-04-19
申请号：US10695180
申请日：2003-10-28
申请人： Mike Kappes , Terje Gloerstad
发明人： Mike Kappes , Terje Gloerstad
IPC分类号： H03B1/00 , H03K3/0231 , H03L7/00 , H03B5/20
CPC分类号： H03L7/00 , H03B2201/0208 , H03B2201/025 , H03K3/0231
摘要： An integrated oscillator that may be used as a time clock includes circuitry that oscillates about an RC time constant, which RC time constant is adjustable to provide a desired frequency of oscillation. More specifically, the oscillator includes a capacitor array that has a plurality of capacitors coupled in parallel wherein each capacitor may be selectively included into the RC time constant or selectively excluded there from. Rather than setting the capacitance values to a desired capacitance value, a system for adjusting the time constant includes circuitry for measuring an output frequency and for comparing that to a certified frequency source wherein the time constant is adjusted by adding or removing capacitors from the capacitor array until the frequency of the internal clock matches an expected frequency.

2. 发明申请

US20050168294A1 Highly stable integrated time reference 有权
标题翻译：高度稳定的综合时间参考
公开(公告)号：US20050168294A1
公开(公告)日：2005-08-04
申请号：US11069368
申请日：2005-03-01
申请人： Mike Kappes , Terje Gloerstad
发明人： Mike Kappes , Terje Gloerstad
IPC分类号： H03B1/00 , H03K3/0231 , H03L7/00
CPC分类号： H03L7/00 , H03B2201/0208 , H03B2201/025 , H03K3/0231
摘要： An integrated oscillator that may be used as a time clock includes circuitry that oscillates about an RC time constant, which RC time constant is adjustable to provide a desired frequency of oscillation. More specifically, the oscillator includes a capacitor array that has a plurality of capacitors coupled in parallel wherein each capacitor may be selectively included into the RC time constant or selectively excluded there from. Rather than setting the capacitance values to a desired capacitance value, a system for adjusting the time constant includes circuitry for measuring an output frequency and for comparing that to a certified frequency source wherein the time constant is adjusted by adding or removing capacitors from the capacitor array until the frequency of the internal clock matches an expected frequency.
摘要翻译：可用作时钟的集成振荡器包括围绕RC时间常数振荡的电路，RC时间常数可调，以提供期望的振荡频率。更具体地说，振荡器包括电容器阵列，其具有并联耦合的多个电容器，其中每个电容器可被选择性地包括在RC时间常数中或者选择性地被包括在其中。不是将电容值设置为期望的电容值，而是用于调整时间常数的系统包括用于测量输出频率并将其与经认证的频率源进行比较的电路，其中通过从电容器阵列中添加或去除电容器来调整时间常数直到内部时钟的频率与预期频率相匹配。

3. 发明授权

US07046097B2 Highly stable integrated time reference 有权
公开(公告)号：US07046097B2
公开(公告)日：2006-05-16
申请号：US11069368
申请日：2005-03-01
申请人： Mike Kappes , Terje Gloerstad
发明人： Mike Kappes , Terje Gloerstad
IPC分类号： H03B5/20
CPC分类号： H03L7/00 , H03B2201/0208 , H03B2201/025 , H03K3/0231
摘要： An integrated oscillator that may be used as a time clock includes circuitry that oscillates about an RC time constant, which RC time constant is adjustable to provide a desired frequency of oscillation. More specifically, the oscillator includes a capacitor array that has a plurality of capacitors coupled in parallel wherein each capacitor may be selectively included into the RC time constant or selectively excluded there from. Rather than setting the capacitance values to a desired capacitance value, a system for adjusting the time constant includes circuitry for measuring an output frequency and for comparing that to a certified frequency source wherein the time constant is adjusted by adding or removing capacitors from the capacitor array until the frequency of the internal clock matches an expected frequency.

4. 发明授权

US06639479B2 Highly stable integrated time reference 有权
标题翻译：高度稳定的综合时间参考
公开(公告)号：US06639479B2
公开(公告)日：2003-10-28
申请号：US10052856
申请日：2002-01-18
申请人： Mike Kappes , Terje Gloerstad
发明人： Mike Kappes , Terje Gloerstad
IPC分类号： H03B520
CPC分类号： H03L7/00 , H03B2201/0208 , H03B2201/025 , H03K3/0231
摘要： An integrated oscillator that may be used as a time clock includes circuitry that oscillates about an RC time constant, which RC time constant is adjustable to provide a desired frequency of oscillation. More specifically, the oscillator includes a capacitor array that has a plurality of capacitors coupled in parallel wherein each capacitor may be selectively included into the RC time constant or selectively excluded there from. Rather than setting the capacitance values to a desired capacitance value, a system for adjusting the time constant includes circuitry for measuring an output frequency and for comparing that to a certified frequency source wherein the time constant is adjusted by adding or removing capacitors from the capacitor array until the frequency of the internal clock matches an expected frequency.
摘要翻译：可用作时钟的集成振荡器包括围绕RC时间常数振荡的电路，RC时间常数可调，以提供期望的振荡频率。更具体地说，振荡器包括电容器阵列，其具有并联耦合的多个电容器，其中每个电容器可被选择性地包括在RC时间常数中或者选择性地被包括在其中。不是将电容值设置为期望的电容值，而是用于调整时间常数的系统包括用于测量输出频率并将其与经认证的频率源进行比较的电路，其中通过从电容器阵列中添加或去除电容器来调整时间常数直到内部时钟的频率与预期频率相匹配。

5. 发明授权

US06563361B1 Method and apparatus for a limiting amplifier with precise output limits 失效
标题翻译：具有精确输出限制的限幅放大器的方法和装置
公开(公告)号：US06563361B1
公开(公告)日：2003-05-13
申请号：US10104654
申请日：2002-03-22
申请人： Mike Kappes
发明人： Mike Kappes
IPC分类号： H03L500
CPC分类号： H03G7/06
摘要： A circuit and a method for limiting a voltage to a specified value (e.g., a rail voltage) without clipping thereby includes a pair of MOSFETs that turn on when a specified bias voltage is reached to either add to or sink current from the input node of the resistive load responsive to fluctuations in current going through the output resistive load to maintain a constant current through it. A plurality of biasing circuits is provided that control the turn on voltage levels for the MOSFETs to achieve the desired operation. The biasing circuits include circuit components that are matched to circuit components within the circuitry that adds and drains current to the output resistive load including a resistive load that matches the output resistive load.
摘要翻译：用于将电压限制到指定值（例如，轨电压）而不限幅的电路和方法包括一对MOSFET，当达到指定的偏置电压时，导通的MOSFET将从输入节点的输入节点增加或吸收电流电阻负载响应通过输出电阻负载的电流波动，以保持恒定的电流通过它。提供了多个偏置电路，其控制MOSFET的导通电压电平以实现期望的操作。偏置电路包括与电路内的电路部件匹配的电路部件，该电路部件将电流加到并输出到包括与输出电阻性负载匹配的电阻性负载的输出电阻性负载。

6. 发明授权

US06714062B2 Method and apparatus for a limiting amplifier with precise output limits 有权
标题翻译：具有精确输出限制的限幅放大器的方法和装置
公开(公告)号：US06714062B2
公开(公告)日：2004-03-30
申请号：US10435779
申请日：2003-05-12
申请人： Mike Kappes
发明人： Mike Kappes
IPC分类号： H03L500
CPC分类号： H03G7/06
摘要： A circuit and a method for limiting a voltage to a specified value (e.g., a rail voltage) without clipping thereby includes a pair of MOSFETs that turn on when a specified bias voltage is reached to either add to or sink current from the input node of the resistive load responsive to fluctuations in current going through the output resistive load to maintain a constant current through it. A plurality of biasing circuits is provided that control the turn on voltage levels for the MOSFETs to achieve the desired operation. The biasing circuits include circuit components that are matched to circuit components within the circuitry that adds and drains current to the output resistive load including a resistive load that matches the output resistive load.
摘要翻译：用于将电压限制到指定值（例如，轨电压）而不限幅的电路和方法包括一对MOSFET，当达到指定的偏置电压时，导通的MOSFET将从电阻负载响应通过输出电阻负载的电流波动，以保持恒定的电流通过它。提供了多个偏置电路，其控制MOSFET的导通电压电平以实现期望的操作。偏置电路包括与电路内的电路部件匹配的电路部件，该电路部件将电流加到并输出到包括与输出电阻性负载匹配的电阻性负载的输出电阻性负载。

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