专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

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

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。

3. 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。

4. 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。

5. 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。

6. 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.

7. 发明申请

US20080278357A1 Data Conversion Diagnostic Bit In A Data Converter 有权
标题翻译：数据转换器中的数据转换诊断位
公开(公告)号：US20080278357A1
公开(公告)日：2008-11-13
申请号：US12015884
申请日：2008-01-17
申请人： Stuart H. Urie , Harald Hieber
发明人： Stuart H. Urie , Harald Hieber
IPC分类号： H03M7/20
CPC分类号： H03M1/1076 , H03M1/12
摘要： A data converter (10) for digitizing an analog input signal and providing digital output data at one or more conversion cycles includes a logic circuit (28) for generating a data conversion diagnostic bit (38) having first and second logical states. The data conversion diagnostic bit toggles from one logical state to the other logical state when a conversion cycle is completed and when the digital output data from the previous conversion cycle has been read. The data conversion diagnostic bit remains at the same logical state when no conversion cycle has been completed or when no reading of the digital output data has been carried out.
摘要翻译：一种用于数字化模拟输入信号并以一个或多个转换周期提供数字输出数据的数据转换器（10）包括用于产生具有第一和第二逻辑状态的数据转换诊断位（38）的逻辑电路（28）。当转换周期完成时以及当前一个转换周期的数字输出数据已被读取时，数据转换诊断位从一个逻辑状态切换到另一个逻辑状态。数据转换诊断位在没有转换周期完成或没有读取数字输出数据的情况下保持相同的逻辑状态。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式