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1. 发明授权

US06930495B1 Digitizing ohmmeter system 有权
标题翻译：数字欧姆表系统
公开(公告)号：US06930495B1
公开(公告)日：2005-08-16
申请号：US10870200
申请日：2004-06-16
申请人： Eric D. Blom , Peter R. Holloway , Jun Wan , Stuart H. Urie
发明人： Eric D. Blom , Peter R. Holloway , Jun Wan , Stuart H. Urie
IPC分类号： G01R27/02 , G01R27/08
CPC分类号： G01R27/02
摘要： A digitizing ohmmeter system for providing a digital resistance measurement includes a current source for providing an excitation current to an impedance-varying input sensor and an ADC circuit including a charge-balancing modulator and a digital post processing circuit. The system utilizes synchronous AC excitation of the input sensor and an AC coupled analog-to-digital converter input. The digitizing ohmmeter system also implements correlated double sampling for noise cancellation to provide low noise and highly accurate analog-to-digital conversions. The ADC circuit includes a reference signal generator generating a resistance reference signal by time-sharing the excitation current with the input sensor. The digitizing ohmmeter system thereby realizes fully ratiometric operation such that neither a precise current source nor a precise voltage source is required for accurate resistance measurements.
摘要翻译：用于提供数字电阻测量的数字化欧姆计系统包括用于向阻抗变化输入传感器提供励磁电流的电流源和包括电荷平衡调制器和数字后处理电路的ADC电路。该系统利用输入传感器的同步交流励磁和交流耦合模数转换器输入。数字化欧姆表系统还实现了相关的双重采样，用于噪声消除，以提供低噪声和高精度的模数转换。 ADC电路包括参考信号发生器，通过与输入传感器共享激励电流来产生电阻参考信号。数字化欧姆表系统实现了完全比例的操作，使得精确的电阻测量不需要精确的电流源和精确的电压源。

2. 发明授权

US07474230B2 RFID temperature logger incorporating a frequency ratio digitizing temperature sensor 有权
标题翻译： RFID温度记录仪采用频率比数字化温度传感器
公开(公告)号：US07474230B2
公开(公告)日：2009-01-06
申请号：US11425381
申请日：2006-06-20
申请人： Eric D. Blom , Jun Wan , Stuart H. Urie
发明人： Eric D. Blom , Jun Wan , Stuart H. Urie
IPC分类号： G08C17/00
CPC分类号： G01K7/01
摘要： A semi-passive radio frequency identification (RFID) tag being coupled to a battery providing a battery voltage for powering a part of the circuitry of the RFID tag includes an RF communication block receiving and transmitting RF signals, a sensor block including a frequency ratio digitizing temperature sensor for alternately measuring the ambient temperature and the battery voltage, and a control logic block in communication with the RF communication block and the sensor block. The control logic controls the operation of the RF communication block and the sensor block and stores temperature and voltage measurement data generated by the sensor block. In one embodiment, the control logic block of the RFID tag operates based on a system clock and the sensor block provides a reference clock to the control logic block for use in calibrating the system clock of the control logic block.
摘要翻译：耦合到提供用于为RFID标签的电路的一部分供电的电池电压的电池的半无源射频识别（RFID）标签包括接收和发送RF信号的RF通信块，包括频率比数字化的传感器块用于交替测量环境温度和电池电压的温度传感器，以及与RF通信块和传感器块通信的控制逻辑块。控制逻辑控制RF通信块和传感器块的操作，并存储由传感器块产生的温度和电压测量数据。在一个实施例中，RFID标签的控制逻辑块基于系统时钟进行操作，并且传感器块向控制逻辑块提供参考时钟以用于校准控制逻辑块的系统时钟。

3. 发明授权

US06962436B1 Digitizing temperature measurement system and method of operation 有权
标题翻译：数字化温度测量系统及操作方法
公开(公告)号：US06962436B1
公开(公告)日：2005-11-08
申请号：US11083861
申请日：2005-03-17
申请人： Peter R. Holloway , Eric D. Blom , Jun Wan , Stuart H. Urie
发明人： Peter R. Holloway , Eric D. Blom , Jun Wan , Stuart H. Urie
IPC分类号： G01K1/02 , G01K7/01 , H03M3/02 , H03M3/00
CPC分类号： H03M3/324 , G01K1/028 , G01K7/01 , H03M3/43 , H03M3/456
摘要： A digitizing temperature measurement system for providing a digital temperature measurement includes an excitation source for providing switched excitation currents to two or three temperature sensing elements and an ADC circuit including a charge-balancing modulator and a digital post processing circuit. The system utilizes synchronous AC excitation of the temperature sensing elements and an AC coupled analog-to-digital converter input. The temperature measurement system also implements correlated double sampling for noise cancellation to provide low noise and highly accurate analog-to-digital conversions. The modulator receives a charge domain reference signal generated by a reference charge packet generator incorporating a charge based bandgap subsystem. Therefore, the temperature measurement system can be operated at very low supply voltages, such as 1.0 Vdc. A low noise and highly accurate temperature measurement system is thus realized where temperature measurements of very high resolutions (up to 16 bit) can be attained.
摘要翻译：用于提供数字温度测量的数字化温度测量系统包括用于向两个或三个温度感测元件提供开关激励电流的激励源和包括电荷平衡调制器和数字后处理电路的ADC电路。该系统利用温度感测元件的同步AC励磁和AC耦合模数转换器输入。温度测量系统还实现了噪声消除的相关双采样，以提供低噪声和高精度的模数转换。调制器接收由包含基于电荷的带隙子系统的参考电荷包发生器产生的电荷域参考信号。因此，温度测量系统可以在非常低的电源电压下工作，例如1.0 Vdc。因此，实现了可以获得非常高分辨率（高达16位）的温度测量的低噪声和高精度的温度测量系统。

4. 发明授权

US06903558B1 Digitizing ohmmeter system 有权
公开(公告)号：US06903558B1
公开(公告)日：2005-06-07
申请号：US10423355
申请日：2003-04-25
申请人： Eric D. Blom , Peter R. Holloway , Jun Wan , Stuart H. Urie
发明人： Eric D. Blom , Peter R. Holloway , Jun Wan , Stuart H. Urie
IPC分类号： G01R27/02 , G01R1/38
CPC分类号： G01R27/02
摘要： A digitizing ohmmeter system for providing a digital resistance measurement includes a current source for providing an excitation current to an impedance-varying input sensor and an ADC circuit including a charge-balancing modulator and a digital post processing circuit. The system utilizes synchronous AC excitation of the input sensor and an AC coupled analog-to-digital converter input. The digitizing ohmmeter system also implements correlated double sampling for noise cancellation to provide low noise and highly accurate analog-to-digital conversions. The ADC circuit includes a reference signal generator generating a resistance reference signal by time-sharing the excitation current with the input sensor. The digitizing ohmmeter system thereby realizes fully ratiometric operation such that neither a precise current source nor a precise voltage source is required for accurate resistance measurements.

5. 发明授权

US07331708B2 Frequency ratio digitizing temperature sensor with linearity correction 有权
标题翻译：频率比数字化温度传感器具有线性校正
公开(公告)号：US07331708B2
公开(公告)日：2008-02-19
申请号：US11361912
申请日：2006-02-23
申请人： Eric D. Blom , Jun Wan , Stuart H. Urie
发明人： Eric D. Blom , Jun Wan , Stuart H. Urie
IPC分类号： G01K7/14 , H03K3/01
CPC分类号： G01K7/01
摘要： A frequency ratio digitizing temperature sensor for generating a linearity-corrected temperature output signal includes an input generation circuit receiving a PTAT current and a CTAT current and a frequency ratio ADC including data and reference oscillators. The input generation circuit generates a first current from the weighted sum of the PTAT current and the CTAT current and also generates a first corrected current being the sum of the first current and a first portion of the PTAT current. The input generation circuit provides a first output current indicative of the PTAT current and a first output voltage generated by applying the first corrected current to a first resistor for use with the data oscillator and provides a second output current being the first corrected current and a second output voltage generated by applying the first current to a second resistor for use with the reference oscillator of the ADC.
摘要翻译：用于产生线性校正温度输出信号的频率比数字化温度传感器包括接收PTAT电流和CTAT电流的输入产生电路和包括数据和参考振荡器的频率比ADC。输入产生电路根据PTAT电流和CTAT电流的加权和产生第一电流，并且还产生第一校正电流，该第一校正电流是PTAT电流的第一电流和第一部分之和。输入产生电路提供指示PTAT电流的第一输出电流和通过将第一校正电流施加到与数据振荡器一起使用的第一电阻器产生的第一输出电压，并提供作为第一校正电流的第二输出电流和第二输出电流通过将第一电流施加到与ADC的参考振荡器一起使用的第二电阻器产生的输出电压。

6. 发明授权

US06869216B1 Digitizing temperature measurement system 有权
标题翻译：数字化温度测量系统
公开(公告)号：US06869216B1
公开(公告)日：2005-03-22
申请号：US10402658
申请日：2003-03-27
申请人： Peter R. Holloway , Eric D. Blom , Jun Wan , Stuart H. Urie
发明人： Peter R. Holloway , Eric D. Blom , Jun Wan , Stuart H. Urie
IPC分类号： G01K1/02 , G01K7/01 , H03M3/02 , H03M3/00
CPC分类号： H03M3/324 , G01K1/028 , G01K7/01 , H03M3/43 , H03M3/456
摘要： A digitizing temperature measurement system for providing a digital temperature measurement includes an excitation source for providing switched excitation currents to two or three temperature sensing elements and an ADC circuit including a charge-balancing modulator and a digital post processing circuit. The system utilizes synchronous AC excitation of the temperature sensing elements and an AC coupled analog-to-digital converter input. The temperature measurement system also implements correlated double sampling for noise cancellation to provide low noise and highly accurate analog-to-digital conversions. The modulator receives a charge domain reference signal generated by a reference charge packet generator incorporating a charge based bandgap subsystem. Therefore, the temperature measurement system can be operated at very low supply voltages, such as 1.0 Vdc. A low noise and highly accurate temperature measurement system is thus realized where temperature measurements of very high resolutions (up to 16 bit) can be attained.
摘要翻译：用于提供数字温度测量的数字化温度测量系统包括用于向两个或三个温度感测元件提供开关激励电流的激励源和包括电荷平衡调制器和数字后处理电路的ADC电路。该系统利用温度感测元件的同步AC励磁和AC耦合模数转换器输入。温度测量系统还实现了噪声消除的相关双采样，以提供低噪声和高精度的模数转换。调制器接收由包含基于电荷的带隙子系统的参考电荷包发生器产生的电荷域参考信号。因此，温度测量系统可以在非常低的电源电压下工作，例如1.0 Vdc。因此，实现了可以获得非常高分辨率（高达16位）的温度测量的低噪声和高精度的温度测量系统。

7. 发明授权

US06831504B1 Constant temperature coefficient self-regulating CMOS current source 有权
标题翻译：恒温系数自调节CMOS电流源
公开(公告)号：US06831504B1
公开(公告)日：2004-12-14
申请号：US10402447
申请日：2003-03-27
申请人： Peter R. Holloway , Eric D. Blom , Jun Wan
发明人： Peter R. Holloway , Eric D. Blom , Jun Wan
IPC分类号： G05F324
CPC分类号： G05F3/245
摘要： A current source includes a first circuit branch of a pair of diode-connected transistors with a resistor connected at the drain terminal and a second circuit branch of an inverter pair of transistors. Both of the circuit branches are supplied by a first current source powered by a supply voltage. The transistors are biased in the subthreshold region and have non-nominal size ratios. A first voltage and a second voltage are established across the resistor and the voltage difference causes a current proportional to absolute temperature to flow in the resistor. The second circuit branch functions as an error amplifier providing an “error signal” to facilitate voltage regulation. The regulation is realized in a third circuit branch which receives the “error signal” and draws excess current from the first current source so that the first voltage and the second voltage remain at the ideal regulated operation point.
摘要翻译：电流源包括一对二极管连接的晶体管的第一电路支路，其中在漏极端子处连接有电阻器，以及反相器晶体管的第二电路支路。两个电路分支由供电电源供电的第一电流源供电。晶体管在亚阈值区域偏置并具有非公称尺寸比。在电阻器两端建立第一电压和第二电压，并且电压差导致与绝对温度成比例的电流流过电阻器。第二电路分支用作提供“误差信号”的误差放大器以便于电压调节。该调节在接收“误差信号”的第三电路分支中实现，并从第一电流源抽取过多的电流，使得第一电压和第二电压保持在理想的调节操作点。

8. 发明授权

US06750796B1 Low noise correlated double sampling modulation system 有权
标题翻译：低噪声相关双采样调制系统
公开(公告)号：US06750796B1
公开(公告)日：2004-06-15
申请号：US10401835
申请日：2003-03-27
申请人： Peter R. Holloway , Eric D. Blom , Jun Wan
发明人： Peter R. Holloway , Eric D. Blom , Jun Wan
IPC分类号： H03M300
CPC分类号： H03M3/494 , H03M3/342 , H03M3/39 , H03M3/43 , H03M3/456
摘要： A charge balancing modulation system for digitizing the output of a variable impedance sensor utilizes synchronous excitation of the input sensor and AC coupling of the analog input signal. The modulation system also implements correlated double sampling to provide low noise and highly accurate analog-to-digital conversions. In one embodiment, the modulation system includes an excitation source for providing a switched current to the input sensor and generating an input voltage step in response, and an integrator including an input capacitor, an amplifier and an accumulation capacitor. The input capacitor AC couples the analog input signal to the integrator. The integrator is controlled by switches operating in complementary state for enabling correlated double sampling operation or enabling data dependent charge accumulation operation. The modulation system generates an output data stream exhibiting a ones density proportional to the magnitude of the average input voltage step.
摘要翻译：用于数字化可变阻抗传感器的输出的电荷平衡调制系统利用输入传感器的同步激励和模拟输入信号的AC耦合。调制系统还实现相关的双采样，以提供低噪声和高精度的模数转换。在一个实施例中，调制系统包括用于向输入传感器提供开关电流并产生响应的输入电压阶跃的激励源，以及包括输入电容器，放大器和积累电容器的积分器。输入电容器AC将模拟输入信号耦合到积分器。积分器由在互补状态下工作的开关控制，以实现相关双采样操作或启用数据相关电荷积累操作。调制系统产生表现出与平均输入电压阶跃幅度成比例的一个密度的输出数据流。

9. 发明申请

US20170252526A1 APPARATUS AND METHOD FOR FORMING AN OPENING IN PATIENT'S TISSUE 审中-公开
公开(公告)号：US20170252526A1
公开(公告)日：2017-09-07
申请号：US15452323
申请日：2017-03-07
申请人： Dart A. Fox , Eric D. Blom , Brian Kamradt
发明人： Dart A. Fox , Eric D. Blom , Brian Kamradt
IPC分类号： A61M16/04 , A61B17/34
CPC分类号： A61M16/0472 , A61B17/3403 , A61B17/3496 , A61B2017/00026 , A61B2017/00115 , A61B2017/00128 , A61B2017/00734 , A61B2017/3409 , A61B2090/0807 , A61M2205/3327 , A61M2205/3344 , A61M2205/3569 , A61M2205/50 , A61M2205/581 , A61M2205/583 , A61M2205/8206
摘要： A surgical instrument system for use in a surgical procedure is disclosed. The surgical instrument system may include an instrument configured to puncture the tissue of a patient and detect when the instrument has entered a lumen of the patient's body. Liquid may be present in the lumen or the lumen may be devoid of liquid or tissue. The instrument is configured to determine when the needle tip is engaged with a portion of patient's tissue and determine when the needle tip has exited that portion of the patient's tissue by detecting changes in properties of the tissue, specifically, electrical resistance.

10. 发明授权

US08325540B1 Variable reference voltage circuit for non-volatile memory 有权
标题翻译：用于非易失性存储器的可变参考电压电路
公开(公告)号：US08325540B1
公开(公告)日：2012-12-04
申请号：US13118353
申请日：2011-05-27
申请人： Harold Kutz , Mark Rouse , Eric D. Blom
发明人： Harold Kutz , Mark Rouse , Eric D. Blom
IPC分类号： G11C7/00
CPC分类号： G11C5/147 , G11C16/30
摘要： A variable reference voltage circuit for performing memory operation on non-volatile memory includes a multi-level voltage source and a selector circuit. The multi-level voltage source generates multiple voltages. The selector circuit includes a selector input and a selector output. The selector input is coupled to the multi-level voltage source to selectively couple any of the multiple voltages to the selector output. The selector output of the selector circuit is coupled to a non-volatile memory array to provide the NV memory array with a selectable program voltage for programming the NV memory array and a selectable erase voltage for erasing the NV memory array.
摘要翻译：用于在非易失性存储器上执行存储器操作的可变参考电压电路包括多电平电压源和选择器电路。多电平电压源产生多个电压。选择器电路包括选择器输入和选择器输出。选择器输入耦合到多电平电压源以选择性地将多个电压中的任一个耦合到选择器输出。选择器电路的选择器输出耦合到非易失性存储器阵列，以向NV存储器阵列提供用于编程NV存储器阵列的可选择的编程电压和用于擦除NV存储器阵列的可选擦除电压。

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