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

US07825735B1 Dual-range linearized transimpedance amplifier system 有权
标题翻译：双范围线性化跨阻放大器系统
公开(公告)号：US07825735B1
公开(公告)日：2010-11-02
申请号：US12582318
申请日：2009-10-20
申请人： Kurt O. Wessendorf
发明人： Kurt O. Wessendorf
IPC分类号： H03F3/08
CPC分类号： H03F3/08
摘要： A transimpedance amplifier system is disclosed which simultaneously generates a low-gain output signal and a high-gain output signal from an input current signal using a single transimpedance amplifier having two different feedback loops with different amplification factors to generate two different output voltage signals. One of the feedback loops includes a resistor, and the other feedback loop includes another resistor in series with one or more diodes. The transimpedance amplifier system includes a signal linearizer to linearize one or both of the low- and high-gain output signals by scaling and adding the two output voltage signals from the transimpedance amplifier. The signal linearizer can be formed either as an analog device using one or two summing amplifiers, or alternately can be formed as a digital device using two analog-to-digital converters and a digital signal processor (e.g. a microprocessor or a computer).
摘要翻译：公开了一种跨阻放大器系统，其同时使用具有不同放大系数的具有两个不同反馈回路的单个跨阻抗放大器从输入电流信号产生低增益输出信号和高增益输出信号，以产生两个不同的输出电压信号。其中一个反馈环路包括一个电阻器，另一个反馈回路包括与一个或多个二极管串联的另一个电阻器。跨阻放大器系统包括信号线性化器，用于通过对来自跨阻抗放大器的两个输出电压信号进行缩放和相加来对低和高增益输出信号中的一个或两个进行线性化。信号线性化器可以形成为使用一个或两个求和放大器的模拟装置，或者可以使用两个模数转换器和数字信号处理器（例如微处理器或计算机）形成为数字装置。

2. 发明授权

US06624708B1 Active shunt capacitance cancelling oscillator circuit 有权
标题翻译：有源并联电容消除振荡电路
公开(公告)号：US06624708B1
公开(公告)日：2003-09-23
申请号：US10183112
申请日：2002-06-25
申请人： Kurt O. Wessendorf
发明人： Kurt O. Wessendorf
IPC分类号： H03B532
CPC分类号： H03B5/36
摘要： An oscillator circuit is disclosed which can be used to produce oscillation using a piezoelectric crystal, with a frequency of oscillation being largely independent of any shunt capacitance associated with the crystal (i.e. due to electrodes on the surfaces of the crystal and due to packaging and wiring for the crystal). The oscillator circuit is based on a tuned gain stage which operates the crystal at a frequency, f, near a series resonance frequency, fS. The oscillator circuit further includes a compensation circuit that supplies all the ac current flow through the shunt resistance associated with the crystal so that this ac current need not be supplied by the tuned gain stage. The compensation circuit uses a current mirror to provide the ac current flow based on the current flow through a reference capacitor that is equivalent to the shunt capacitance associated with the crystal. The oscillator circuit has applications for driving piezoelectric crystals for sensing of viscous, fluid or solid media by detecting a change in the frequency of oscillation of the crystal and a resonator loss which occur from contact of an exposed surface of the crystal by the viscous, fluid or solid media.
摘要翻译：公开了一种可用于使用压电晶体产生振荡的振荡器电路，其振荡频率很大程度上与晶体相关的任何分流电容无关（即由于晶体表面上的电极以及由于封装和布线为晶体）。振荡器电路基于调谐增益级，其以接近串联谐振频率fS的频率f操作晶体。振荡器电路还包括补偿电路，其将所有交流电流提供通过与晶体相关联的分流电阻，使得该交流电流不需要由调谐增益级提供。补偿电路使用电流镜来提供基于通过参考电容器的电流流动的交流电流，其等效于与晶体相关联的分流电容。振荡器电路具有通过检测晶体的振荡频率的变化以及由粘性流体与晶体的暴露表面的接触而发生的谐振器损耗来驱动用于感测粘性，流体或固体介质的压电晶体的应用或固体介质。

3. 发明授权

US07308317B1 Micromachined electrode array 有权
标题翻译：微加工电极阵列
公开(公告)号：US07308317B1
公开(公告)日：2007-12-11
申请号：US11060473
申请日：2005-02-17
申请人： Murat Okandan , Kurt O. Wessendorf
发明人： Murat Okandan , Kurt O. Wessendorf
IPC分类号： A61N1/05
CPC分类号： A61N1/0543
摘要： An electrode array is disclosed which has applications for neural stimulation and sensing. The electrode array, in certain embodiments, can include a plurality of electrodes each of which is flexibly attached to a common substrate using a plurality of springs to allow the electrodes to move independently. In other embodiments of the electrode array, the electrodes can be fixed to the substrate. The electrode array can be formed from a combination of bulk and surface micromachining, and can include electrode tips having an electroplated metal (e.g. platinum, iridium, gold or titanium) or a metal oxide (e.g. iridium oxide) for biocompatibility. The electrode array can be used to form a part of a neural prosthesis, and is particularly well adapted for use in an implantable retinal prosthesis.
摘要翻译：公开了一种具有神经刺激和感测应用的电极阵列。在某些实施例中，电极阵列可以包括多个电极，每个电极使用多个弹簧灵活地附接到公共衬底，以允许电极独立地移动。在电极阵列的其它实施例中，电极可以固定到基板上。电极阵列可以由本体和表面微加工的组合形成，并且可以包括用于生物相容性的具有电镀金属（例如铂，铱，金或钛）或金属氧化物（例如氧化铱）的电极尖端。电极阵列可用于形成神经假体的一部分，并且特别适用于可植入的视网膜假体。

4. 发明授权

US06169459A Active-bridge oscillator 有权
标题翻译：有源桥式振荡器
公开(公告)号：US06169459A
公开(公告)日：2001-01-02
申请号：US09314865
申请日：1999-05-19
申请人： Kurt O. Wessendorf
发明人： Kurt O. Wessendorf
IPC分类号： H03B538
CPC分类号： H03B5/38
摘要： An active bridge oscillator is formed from a differential amplifier where positive feedback is a function of the impedance of one of the gain elements and a relatively low value common emitter resistance. This use of the nonlinear transistor parameter h stabilizes the output and eliminates the need for ALC circuits common to other bridge oscillators.
摘要翻译：主动桥式振荡器由差分放大器形成，其中正反馈是增益元件之一的阻抗和相对低值的共发射极电阻的函数。非线性晶体管参数h的使用稳定了输出，并且消除了对其他桥式振荡器通用的ALC电路的需要。

5. 发明授权

US07183868B1 Triple inverter pierce oscillator circuit suitable for CMOS 有权
标题翻译：三重逆变器穿孔振荡电路适用于CMOS
公开(公告)号：US07183868B1
公开(公告)日：2007-02-27
申请号：US10937163
申请日：2004-09-09
申请人： Kurt O. Wessendorf
发明人： Kurt O. Wessendorf
IPC分类号： H03B5/32
CPC分类号： H03K3/3545
摘要： An oscillator circuit is disclosed which can be formed using discrete field-effect transistors (FETs), or as a complementary metal-oxide-semiconductor (CMOS) integrated circuit. The oscillator circuit utilizes a Pierce oscillator design with three inverter stages connected in series. A feedback resistor provided in a feedback loop about a second inverter stage provides an almost ideal inverting transconductance thereby allowing high-Q operation at the resonator-controlled frequency while suppressing a parasitic oscillation frequency that is inherent in a Pierce configuration using a “standard” triple inverter for the sustaining amplifier. The oscillator circuit, which operates in a range of 10–50 MHz, has applications for use as a clock in a microprocessor and can also be used for sensor applications.
摘要翻译：公开了可以使用离散场效应晶体管（FET）或作为互补金属氧化物半导体（CMOS）集成电路形成的振荡器电路。振荡器电路采用Pierce振荡器设计，三个逆变级串联连接。设置在反馈回路周围的反馈电阻器提供了一个几乎理想的反相跨导，从而允许谐振器受控频率的高Q运算，同时抑制皮尔斯配置中固有的寄生振荡频率，使用“标准”三倍逆变器用于维持放大器。在10-50 MHz范围内工作的振荡器电路可用作微处理器中的时钟，也可用于传感器应用。

6. 发明授权

US06573762B1 Analog pulse processor 有权
标题翻译：模拟脉冲处理器
公开(公告)号：US06573762B1
公开(公告)日：2003-06-03
申请号：US09435091
申请日：1999-11-05
申请人： Kurt O. Wessendorf , Dale A. Kemper
发明人： Kurt O. Wessendorf , Dale A. Kemper
IPC分类号： H03K1700
CPC分类号： G06G7/161
摘要： A very low power analog pulse processing system implemented as an ASIC useful for processing signals from radiation detectors, among other things. The system incorporates the functions of a charge sensitive amplifier, a shaping amplifier, a peak sample and hold circuit, and, optionally, an analog to digital converter and associated drivers.
摘要翻译：实现为用于处理来自辐射检测器的信号的ASIC的非常低功率的模拟脉冲处理系统等等。该系统集成了电荷敏感放大器，整形放大器，峰值采样和保持电路以及可选的模数转换器和相关驱动器的功能。

7. 发明授权

US08285394B1 Demultiplexer circuit for neural stimulation 有权
标题翻译：用于神经刺激的解复用器电路
公开(公告)号：US08285394B1
公开(公告)日：2012-10-09
申请号：US12502698
申请日：2009-07-14
申请人： Kurt O. Wessendorf , Murat Okandan , Sean Pearson
发明人： Kurt O. Wessendorf , Murat Okandan , Sean Pearson
IPC分类号： A61N1/05
CPC分类号： A61N1/36046 , A61N1/0543
摘要： A demultiplexer circuit is disclosed which can be used with a conventional neural stimulator to extend the number of electrodes which can be activated. The demultiplexer circuit, which is formed on a semiconductor substrate containing a power supply that provides all the dc electrical power for operation of the circuit, includes digital latches that receive and store addressing information from the neural stimulator one bit at a time. This addressing information is used to program one or more 1:2N demultiplexers in the demultiplexer circuit which then route neural stimulation signals from the neural stimulator to an electrode array which is connected to the outputs of the 1:2N demultiplexer. The demultiplexer circuit allows the number of individual electrodes in the electrode array to be increased by a factor of 2N with N generally being in a range of 2-4.
摘要翻译：公开了一种解复用器电路，其可以与传统的神经刺激器一起使用以扩展可以被激活的电极的数量。形成在包含提供用于电路操作的所有直流电的电源的半导体衬底上的解复用器电路包括一次接收并存储来自神经刺激器的寻址信息的数字锁存器。该寻址信息用于对解复用器电路中的一个或多个1：2N解复用器进行编程，然后将神经刺激信号从神经刺激器传送到连接到1：2N解复用器的输出的电极阵列。解复用器电路允许电极阵列中的各个电极的数量增加2N倍，N通常在2-4的范围内。

8. 发明授权

US08000804B1 Electrode array for neural stimulation 有权
标题翻译：电极阵列用于神经刺激
公开(公告)号：US08000804B1
公开(公告)日：2011-08-16
申请号：US11588905
申请日：2006-10-27
申请人： Kurt O. Wessendorf , Murat Okandan , David J. Stein , Pin Yang , Joseph Cesarano, III , Jennifer Dellinger
发明人： Kurt O. Wessendorf , Murat Okandan , David J. Stein , Pin Yang , Joseph Cesarano, III , Jennifer Dellinger
IPC分类号： A61N1/00
CPC分类号： A61N1/0543 , A61N1/36046
摘要： An electrode array for neural stimulation is disclosed which has particular applications for use in a retinal prosthesis. The electrode array can be formed as a hermetically-sealed two-part ceramic package which includes an electronic circuit such as a demultiplexer circuit encapsulated therein. A relatively large number (up to 1000 or more) of individually-addressable electrodes are provided on a curved surface of a ceramic base portion the electrode array, while a much smaller number of electrical connections are provided on a ceramic lid of the electrode array. The base and lid can be attached using a metal-to-metal seal formed by laser brazing. Electrical connections to the electrode array can be provided by a flexible ribbon cable which can also be used to secure the electrode array in place.
摘要翻译：公开了一种用于神经刺激的电极阵列，其具有用于视网膜假体的特定应用。电极阵列可以形成为密封的两部分陶瓷封装，其包括诸如其中封装的解复用器电路的电子电路。在电极阵列的陶瓷基部的弯曲表面上设置相对大的（多达1000个或更多个）可单独寻址的电极，而在电极阵列的陶瓷盖上提供少得多的电连接。可以使用由激光钎焊形成的金属对金属密封来安装基座和盖子。可以通过柔性带状电缆来提供与电极阵列的电连接，柔性带状电缆也可用于将电极阵列固定在适当的位置。

9. 发明授权

US07127301B1 Flexible retinal electrode array 有权
标题翻译：灵活的视网膜电极阵列
公开(公告)号：US07127301B1
公开(公告)日：2006-10-24
申请号：US10426152
申请日：2003-04-28
申请人： Murat Okandan , Kurt O. Wessendorf , Todd R. Christenson
发明人： Murat Okandan , Kurt O. Wessendorf , Todd R. Christenson
IPC分类号： A61N1/05
CPC分类号： A61N1/0543
摘要： An electrode array which has applications for neural stimulation and sensing. The electrode array can include a large number of electrodes each of which is flexibly attached to a common substrate using a plurality of springs to allow the electrodes to move independently. The electrode array can be formed from a combination of bulk and surface micromachining, with electrode tips that can include an electroplated metal (e.g. platinum, iridium, gold or titanium) or a metal oxide (e.g. iridium oxide) for biocompatibility. The electrode array can be used to form a part of a neural prosthesis, and is particularly well adapted for use in an implantable retinal prosthesis where the electrodes can be tailored to provide a uniform gentle contact pressure with optional sensing of this contact pressure at one or more of the electrodes.
摘要翻译：一种具有神经刺激和感测应用的电极阵列。电极阵列可以包括多个电极，每个电极使用多个弹簧灵活地附接到公共基板，以允许电极独立地移动。电极阵列可以由本体和表面微加工的组合形成，电极尖可以包括用于生物相容性的电镀金属（例如铂，铱，金或钛）或金属氧化物（例如氧化铱）。电极阵列可用于形成神经假体的一部分，并且特别适用于可植入的视网膜假体，其中电极可以被调整以提供均匀的温和接触压力，并且可选地感测到该接触压力在一个或更多的电极。

10. 发明授权

US5339051A Micro-machined resonator oscillator 失效
标题翻译：微加工谐振器
公开(公告)号：US5339051A
公开(公告)日：1994-08-16
申请号：US39638
申请日：1993-03-30
申请人： Dale R. Koehler , Jeffry J. Sniegowski , Hugh M. Bivens , Kurt O. Wessendorf
发明人： Dale R. Koehler , Jeffry J. Sniegowski , Hugh M. Bivens , Kurt O. Wessendorf
IPC分类号： H01L41/22 , H03H9/05 , H03B5/36 , H01L41/08
CPC分类号： H03H9/1035
摘要： A micro-miniature resonator-oscillator is disclosed. Due to the miniaturization of the resonator-oscillator, oscillation frequencies of one MHz and higher are utilized. A thickness-mode quartz resonator housed in a micro-machined silicon package and operated as a "telemetered sensor beacon" that is, a digital, self-powered, remote, parameter measuring-transmitter in the FM-band. The resonator design uses trapped energy principles and temperature dependence methodology through crystal orientation control, with operation in the 20-100 MHz range. High volume batch-processing manufacturing is utilized, with package and resonator assembly at the wafer level. Unique design features include squeeze-film damping for robust vibration and shock performance, capacitive coupling through micro-machined diaphragms allowing resonator excitation at the package exterior, circuit integration and extremely small (0.1 in. square) dimensioning. A family of micro-miniature sensor beacons is also disclosed with widespread applications as bio-medical sensors, vehicle status monitors and high-volume animal identification and health sensors. The sensor family allows measurement of temperatures, chemicals, acceleration and pressure. A microphone and clock realization is also available.
摘要翻译：公开了一种微型微型谐振器。由于谐振器振荡器的小型化，使用1MHz以上的振荡频率。容纳在微加工硅封装中并作为“遥测传感器信标”运行的厚度模式石英谐振器，即FM带中的数字，自供电，远程参数测量 - 发射器。谐振器设计使用捕获的能量原理和温度依赖性方法，通过晶体取向控制，工作在20-100 MHz范围。利用大批量批量处理制造，在晶片级采用封装和谐振器组件。独特的设计特点包括用于强大的振动和冲击性能的挤压膜阻尼，通过微加工膜片进行电容耦合，允许在外壳外部进行谐振器激励，电路集成和极小（0.1平方英寸）尺寸。微型传感器信标系列也被广泛应用于生物医学传感器，车辆状态监视器和大容量动物识别和健康传感器。传感器系列可以测量温度，化学品，加速度和压力。麦克风和时钟实现也是可用的。

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