公开(公告)号：US08708923B2

公开(公告)日：2014-04-29

申请号：US12700214

申请日：2010-02-04

申请人： Lorenzo Turicchia ,  Soumyajit Mandal ,  Rahul Sarpeshkar

发明人： Lorenzo Turicchia ,  Soumyajit Mandal ,  Rahul Sarpeshkar

IPC分类号： A61B5/04

CPC分类号： A61B7/045

摘要： A wearable system for monitoring a plurality of physiological signals is provided. The wearable system includes at least one sensor producing the physiological signals associated with a patient. A processor unit receives the physiological signals from the at least one sensor. The processor unit analyzes the physiological signals to determine the occurrence of a triggered event and produces at least one output signal identifying the triggered event. A transmission unit receives the at least one output signal and prepares for transmission of the at least one output signal.

摘要翻译： 提供了一种用于监测多个生理信号的可穿戴系统。 可穿戴系统包括产生与患者相关联的生理信号的至少一个传感器。 处理器单元接收来自至少一个传感器的生理信号。 处理器单元分析生理信号以确定触发事件的发生，并产生识别触发事件的至少一个输出信号。 传输单元接收所述至少一个输出信号并准备传输所述至少一个输出信号。

公开(公告)号：US08688438B2

公开(公告)日：2014-04-01

申请号：US12702676

申请日：2010-02-09

申请人： Keng Hoong Wee ,  Lorenzo Turicchia ,  Rahul Sarpeshkar

发明人： Keng Hoong Wee ,  Lorenzo Turicchia ,  Rahul Sarpeshkar

IPC分类号： G10L19/00 ,  G10L11/06

CPC分类号： G10L25/48 ,  G10L13/047 ,  G10L15/28

摘要： A speech processing system includes a plurality of signal analyzers that extract salient signal attributes of an input voice signal. A difference module computes the differences in the salient signal attributes. One or more control modules control a plurality of speech generators using an output signal from the difference module in a speech-locked loop (SLL), the speech generators use the output signal to generate a voice signal.

摘要翻译： 语音处理系统包括提取输入语音信号的显着信号属性的多个信号分析器。 差分模块计算突出信号属性的差异。 一个或多个控制模块使用来自语音锁定环（SLL）中的差分模块的输出信号来控制多个语音生成器，语音生成器使用输出信号来产生语音信号。

公开(公告)号：US08242429B2

公开(公告)日：2012-08-14

申请号：US11903571

申请日：2007-09-24

申请人： Rahul Sarpeshkar ,  Maziar Tavakoli Dastjerdi

发明人： Rahul Sarpeshkar ,  Maziar Tavakoli Dastjerdi

IPC分类号： H03F3/08 ,  H01J40/14

CPC分类号： A61B5/14551 ,  A61B2560/0209 ,  H03F1/083 ,  H03F1/18 ,  H03F1/342 ,  H03F3/082 ,  H03F3/087 ,  H03F3/45475 ,  H03F2200/435 ,  H03F2203/45138 ,  H03F2203/45528 ,  H03G3/3084

摘要： An energy-efficient photoreceptor apparatus and a transimpedance amplifier apparatus having high energy-efficiency and low power consumption of which are achieved through multiple distributed gain amplification stages, adaptive loop gain control circuitry and unilateralization, thereby enabling fast and precise performance over a wide range of input-current levels. The high-energy efficiency, robust feedback stability and performance of the present invention can be utilized to achieve sub-milliwatt pulse oximeters and may be employed in other current-to-voltage amplification and conversion applications. The use of analog processing on the outputs of the photoreceptor apparatus also helps lower the overall power of pulse oximeters.

摘要翻译： 通过多个分布式增益放大级，自适应环路增益控制电路和单向化实现了具有高能效和低功耗的节能感光装置和跨阻放大器装置，从而能够在宽范围内实现快速和精确的性能 输入电流电平。 可以利用本发明的高能量效率，鲁棒的反馈稳定性和性能来实现亚微米脉冲血氧计，并且可以用于其它电流 - 电压放大和转换应用中。 对感光器装置的输出使用模拟处理也有助于降低脉搏血氧仪的整体功率。

公开(公告)号：US20120114081A1

公开(公告)日：2012-05-10

申请号：US13352818

申请日：2012-01-18

申请人： Soumyajit Mandal ,  Serhii M. Zhak ,  Rahul Sarpeshkar

发明人： Soumyajit Mandal ,  Serhii M. Zhak ,  Rahul Sarpeshkar

IPC分类号： H04L27/06

CPC分类号： H04B1/1036 ,  G01R23/163

摘要： A system and technique for providing to flexible, programmable frequency estimators and spectrum analyzers that can operate over extremely large bandwidths and yet provide high spectral resolution are described. The acquisition time and hardware complexity of one technique scale as O(N), where N denotes the number of frequency bins acquired. Embodiments are disclosed in which architectures are implemented using exponentially-tapered transmission lines and filter cascades.

摘要翻译： 描述了一种用于提供灵活的可编程频率估计器和频谱分析仪的系统和技术，其可以在极大的带宽上工作并且还提供高的光谱分辨率。 一种技术尺度的采集时间和硬件复杂度为O（N），其中N表示获取的频率块的数量。 公开了实施例，其中使用指数级锥形传输线和滤波器级联来实现架构。

公开(公告)号：US08045947B2

公开(公告)日：2011-10-25

申请号：US11609060

申请日：2006-12-11

申请人： Soumyajit Mandal ,  Rahul Sarpeshkar

发明人： Soumyajit Mandal ,  Rahul Sarpeshkar

IPC分类号： H04B1/10

CPC分类号： H01Q1/22 ,  H01Q1/2225 ,  H01Q1/248 ,  H01Q7/00 ,  H01Q9/28 ,  H01Q23/00

摘要： In one aspect, the invention is a far-field power extraction circuit which includes an integrated antenna and impedance matching portion and a rectifier portion. The antenna and impedance matching portion includes an antenna configured to be responsive to a propagating electromagnetic signal and which provides a resonant response at a resonant frequency. In response to the electromagnetic signal, the antenna provides an electromagnetic output signal at an antenna port. The antenna and impedance matching portion is configured to match an antenna impedance with a remainder of the far-field power extraction circuit including the rectifier portion of the power extraction circuit coupled to the antenna and impedance matching portion. The rectifier is configured to rectify the electromagnetic output signal provided by the antenna to produce a direct current (DC) voltage at an output of the rectifier.

摘要翻译： 一方面，本发明是一种远场功率提取电路，其包括集成天线和阻抗匹配部分以及整流器部分。 天线和阻抗匹配部分包括被配置为响应于传播的电磁信号并且以谐振频率提供谐振响应的天线。 响应于电磁信号，天线在天线端口提供电磁输出信号。 天线和阻抗匹配部分被配置为将天线阻抗与包括耦合到天线和阻抗匹配部分的功率提取电路的整流器部分的远场功率提取电路的其余部分相匹配。 整流器被配置为整流由天线提供的电磁输出信号，以在整流器的输出端产生直流（DC）电压。

公开(公告)号：US20090163784A1

公开(公告)日：2009-06-25

申请号：US11903571

申请日：2007-09-24

申请人： Rahul Sarpeshkar ,  Maziar Tavakoli Dastjerdi

发明人： Rahul Sarpeshkar ,  Maziar Tavakoli Dastjerdi

IPC分类号： A61B5/1455 ,  H03F1/34

CPC分类号： A61B5/14551 ,  A61B2560/0209 ,  H03F1/083 ,  H03F1/18 ,  H03F1/342 ,  H03F3/082 ,  H03F3/087 ,  H03F3/45475 ,  H03F2200/435 ,  H03F2203/45138 ,  H03F2203/45528 ,  H03G3/3084

摘要： An energy-efficient photoreceptor apparatus and a transimpedance amplifier apparatus having high energy-efficiency and low power consumption of which are achieved through multiple distributed gain amplification stages, adaptive loop gain control circuitry and unilateralization, thereby enabling fast and precise performance over a wide range of input-current levels. The high-energy efficiency, robust feedback stability and performance of the present invention can be utilized to achieve sub-milliwatt pulse oximeters and may be employed in other current-to-voltage amplification and conversion applications. The use of analog processing on the outputs of the photoreceptor apparatus also helps lower the overall power of pulse oximeters.

摘要翻译： 通过多个分布式增益放大级，自适应环路增益控制电路和单向化实现了具有高能效和低功耗的节能感光装置和跨阻放大器装置，从而能够在宽范围内实现快速和精确的性能 输入电流电平。 可以利用本发明的高能量效率，鲁棒的反馈稳定性和性能来实现亚微米脉冲血氧计，并且可以用于其它电流 - 电压放大和转换应用中。 对感光器装置的输出使用模拟处理也有助于降低脉搏血氧仪的整体功率。

公开(公告)号：US07167090B1

公开(公告)日：2007-01-23

申请号：US10944676

申请日：2004-09-17

申请人： Soumyajit Mandal ,  Rahul Sarpeshkar

发明人： Soumyajit Mandal ,  Rahul Sarpeshkar

IPC分类号： G08B1/08

CPC分类号： H01Q1/2225 ,  H01Q1/248 ,  H01Q9/28 ,  H01Q23/00 ,  H02J7/025 ,  H02J17/00 ,  H02J50/00 ,  H02J50/27 ,  H02J50/80 ,  H02M7/219 ,  Y02B70/1441

摘要： A method and apparatus for performing far-field power extraction are presented. The method includes receiving an electromagnetic radiation signal, rectifying the signal to produce a direct current (D.C.) voltage and providing the D.C. voltage to a circuit. A far-field power extraction circuit includes an antenna for receiving an electromagnetic radiation signal, a rectifier for rectifying the electromagnetic radiation signal. The circuit may further include a charge pump for amplifying the rectified voltage, an impedance matching network for coupling the antenna to the rectifier and a feedback tuning circuit for optimizing performance of the extraction circuit.

摘要翻译： 提出了一种用于进行远场功率提取的方法和装置。 该方法包括接收电磁辐射信号，对信号进行整流以产生直流（DC）电压并向电路提供直流电压。 远场功率提取电路包括用于接收电磁辐射信号的天线，用于整流电磁辐射信号的整流器。 电路还可以包括用于放大整流电压的电荷泵，用于将天线耦合到整流器的阻抗匹配网络和用于优化提取电路的性能的反馈调谐电路。

公开(公告)号：US06621319B1

公开(公告)日：2003-09-16

申请号：US09407535

申请日：1999-09-29

申请人： Ruben Herrera ,  Rahul Sarpeshkar

发明人： Ruben Herrera ,  Rahul Sarpeshkar

IPC分类号： H03K3037

CPC分类号： H03K3/356113

摘要： An edge-triggered flip-flop circuit in which a pair of capacitors are alternately charged and discharged to voltages approximating supply rail values and, in combination of with a small number of switches, present high or low impedance paths for input signal transitions of a predetermined polarity to trigger state changes. In an alternative embodiment large switching capacitors are avoided in a circuit that employs a pair of pass-transistor configurations to connect respective capacitors to output terminals of a bistable device. The voltages on the capacitors track the corresponding bistable device output voltages when the input signal is in a given state (illustratively low), and store the value of the corresponding voltage when turned off by the (illustratively high) other state of the input signal. Then, the voltage on the capacitors and the selected input signal transition is used to effectively trigger a transition in the bistable device.

摘要翻译： 边沿触发的触发电路，其中一对电容器被交替地充电并放电到接近电源轨值的电压，并且与少量开关组合地存在用于预定的输入信号转换的高或低阻抗路径 极性触发状态变化。 在替代实施例中，在采用一对传输晶体管配置以将各个电容器连接到双稳态器件的输出端子的电路中避免了大的开关电容器。 当输入信号处于给定状态（例如低电平）时，电容器上的电压跟踪相应的双稳态器件输出电压，并且当输入信号的（示例性高）其他状态被关断时，存储相应电压的值。 然后，使用电容器上的电压和所选择的输入信号转换来有效地触发双稳态器件中的转换。

公开(公告)号：US06377194B1

公开(公告)日：2002-04-23

申请号：US09408137

申请日：1999-09-29

申请人： Rahul Sarpeshkar

发明人： Rahul Sarpeshkar

IPC分类号： H03M118

CPC分类号： G06J1/00

摘要： An analog computation system which forms a hybrid between analog and digital computation. The analog signal is divided into a plurality of separated analog signals, each of the different analog signals collectively representing the original analog signal, and each having less resolution then the total desired resolution. A number of different analog computation elements carry out a mathematical function on the separated signal. Different stages may be provided, and a signal restoration device may be provided between the different stages.

摘要翻译： 一种在模拟和数字计算之间形成混合的模拟计算系统。 模拟信号被分成多个分离的模拟信号，每个不同的模拟信号共同表示原始模拟信号，并且每个具有较小的分辨率，然后是总的期望分辨率。 多个不同的模拟计算元件对分离的信号执行数学函数。 可以提供不同的阶段，并且可以在不同的阶段之间提供信号恢复装置。

公开(公告)号：US06212288B1

公开(公告)日：2001-04-03

申请号：US09113651

申请日：1998-07-10

申请人： Rahul Sarpeshkar ,  Jörg Kramer ,  Christof Koch

发明人： Rahul Sarpeshkar ,  Jörg Kramer ,  Christof Koch

IPC分类号： G06K900

CPC分类号： G06T7/20

摘要： An integrated circuit that computes the velocity of a visual stimulus moving between two photoreceptor locations is disclosed. In its most basic version, the circuit comprises two temporal edge detectors with photoreceptors, two pulse-shaping circuits, and one motion circuit on a single silicon chip. Velocity is computed from the signed time delay of the appearance of an image feature at the two photoreceptor locations. Specifically, each temporal edge detector detects a rapid irradiance transient at its photoreceptor location and converts it into a short current spike. This current spike is transformed into two different voltage pulses, a fast pulse and a slowly-decaying pulse, by the pulse-shaping circuit that is coupled to the temporal edge detector. The slowly-decaying voltage pulse produced at one location together with the fast voltage pulse generated at the other location, act as inputs to the motion circuit which generates a signal representative of the speed of motion for one sign or direction of motion. A pair of motion circuits encodes velocity, each motion circuit encoding speed for one of the two opposing directions of motion. The motion circuits are sample-and-hold circuits that use the fast pulse from one location to sample the slowly-decaying pulse from the other location. The individual motion-sensing cells are compact, and are therefore suited for use in dense one-dimensional or two-dimensional imaging arrays. Various embodiments are described.

摘要翻译： 公开了一种计算在两个感光体位置之间移动的视觉刺激的速度的集成电路。 在其最基本的版本中，该电路包括两个具有感光体的时间边缘检测器，两个脉冲整形电路，以及单个硅芯片上的一个运动电路。 从两个感光体位置处的图像特征的出现的带符号时间延迟计算速度。 具体地，每个时间边缘检测器检测其感光器位置处的快速辐照瞬变并将其转换成短电流尖峰。 该电流尖峰通过耦合到时间边缘检测器的脉冲整形电路转换成两个不同的电压脉冲，即快速脉冲和缓慢衰减的脉冲。 在一个位置处产生的缓慢衰减的电压脉冲以及在另一个位置处产生的快速电压脉冲一起作为运动电路的输入，该运动电路产生代表一个运动速度的运动速度的信号。 一对运动电路对速度进行编码，每个运动电路编码两个相反的运动方向之一的速度。 运动电路是采样和保持电路，其使用来自一个位置的快速脉冲从另一个位置采样缓慢衰减的脉冲。 各个运动感测单元是紧凑的，因此适用于致密的一维或二维成像阵列。 描述各种实施例。