公开(公告)号：US20090120200A1

公开(公告)日：2009-05-14

申请号：US12273844

申请日：2008-11-19

Applicant: Shantanu Chakrabartty

Inventor： Shantanu Chakrabartty

IPC: G01N3/32

CPC classification number: A61F2/468 ,  A61F2002/30087 ,  A61F2002/3067 ,  A61F2002/488 ,  A61F2250/0002 ,  G01L5/0052 ,  G01M5/00 ,  G01N29/043 ,  G01N29/2481 ,  G01N2203/0073 ,  G01N2203/0623 ,  G01N2291/02827 ,  H02N2/18

Abstract: A self-powered sensor is provided for strain-rate monitoring and other low power requirement applications. The self-powered sensor is comprised of: a piezoelectric transducer; a non-volatile memory comprised of at least one floating gate transistor; a current reference circuit adapted to receive a voltage signal from the piezoelectric transducer and operable to output a reference current into the non-volatile memory; an impact-monitoring circuit having a triggering circuit and a switch; the triggering circuit adapted to receive the voltage signal from the piezoelectric transducer and operable to control the switch based on the rate of change of the voltage signal.

Abstract translation: 提供自供电传感器用于应变率监测和其他低功率需求应用。 自供电传感器包括：压电换能器; 由至少一个浮栅晶体管构成的非易失性存储器; 电流参考电路，其适于从所述压电换能器接收电压信号并且可操作以将参考电流输出到所述非易失性存储器中; 具有触发电路和开关的冲击监视电路; 所述触发电路适于从压电换能器接收电压信号并且可操作以基于电压信号的变化率来控制开关。

公开(公告)号：US20080055133A1

公开(公告)日：2008-03-06

申请号：US11895630

申请日：2007-08-24

Applicant: Shantanu Chakrabartty

Inventor： Shantanu Chakrabartty

IPC: H03M3/04

CPC classification number: H03M3/466

Abstract: A method is provided for multi-channel analog-to-digital conversion. The method includes: receiving an input vector which represents a plurality of analog signals; transforming the input vector using a linear transformation matrix; converting the transformed input vector to a digital stream using an array of sigma-delta converter; and adapting the linear transform matrix to maximize de-correlation between the signals represented in the input vector.

Abstract translation: 提供了一种用于多通道模数转换的方法。 该方法包括：接收表示多个模拟信号的输入向量; 使用线性变换矩阵变换输入向量; 使用Σ-Δ转换器的阵列将变换的输入向量转换为数字流; 并适应线性变换矩阵以最大化在输入向量中表示的信号之间的去相关。

公开(公告)号：US20070250759A1

公开(公告)日：2007-10-25

申请号：US11784519

申请日：2007-04-06

Applicant: Shantanu Chakrabartty

Inventor： Shantanu Chakrabartty

IPC: H03M13/00

CPC classification number: H03M13/1134 ,  H03M13/1117 ,  H03M13/112 ,  H03M13/1191 ,  H03M13/23 ,  H03M13/2957 ,  H03M13/6583 ,  H03M13/6597

Abstract: A margin decoding communications system includes a circuit receiving a message encoded by an iterative code and processing the message into scores. A normalization process module receives the scores and iteratively approximates log-map normalization factors of the scores to generate approximation normalization factors. An element receives the message and the approximation normalization factors and decodes the received message based on the approximation normalization factors.

Abstract translation: 边缘解码通信系统包括接收由迭代代码编码的消息并将消息处理成分数的电路。 归一化处理模块接收得分并迭代地近似得分的对数图归一化因子，以产生近似归一化因子。 元素接收消息和近似归一化因子，并根据近似归一化因子对接收到的消息进行解码。

公开(公告)号：US11464487B2

公开(公告)日：2022-10-11

申请号：US16023761

申请日：2018-06-29

Applicant: Shantanu Chakrabartty ,  Yarub Alazzawi ,  Srikanth Signamaneni ,  Keng-Ku Liu ,  Mingquan Yuan

Inventor： Shantanu Chakrabartty ,  Yarub Alazzawi ,  Srikanth Signamaneni ,  Keng-Ku Liu ,  Mingquan Yuan

IPC: A61B8/00 ,  H01L41/113 ,  G01N29/24 ,  G01N29/036 ,  G01N29/02 ,  G01N29/44 ,  G01N29/30

Abstract: A sensor system includes a sensor module that is embedded in a target environment and a signal system. The sensor module includes an active sensor of a first type that detects a target element in the target environment and a reference sensor of the first type that prevents detection of target elements by the reference sensor. The active sensor and the reference sensor receive an ultrasonic signal and respectively generate a first response signal and a second response signal. The first response signal is at least partially as a function of the detected target element. The signal system includes an ultrasonic transducer that generates the ultrasonic signal and receives the first and second response signals, and a controller communicatively coupled to the ultrasonic transducer. The controller identifies the detected target element based at least partially on the first and second response signals.

公开(公告)号：US11128168B2

公开(公告)日：2021-09-21

申请号：US16789007

申请日：2020-02-12

Applicant: Shantanu Chakrabartty ,  Yarub Alazzawi ,  Kenji Aono ,  Erica L. Scheller

Inventor： Shantanu Chakrabartty ,  Yarub Alazzawi ,  Kenji Aono ,  Erica L. Scheller

IPC: H02J50/05 ,  H04B5/00

Abstract: A self-capacitance based remote power delivery device includes a modulating power source electrically coupled to a grounded substrate, an energy harvesting device coupled to the grounded substrate, and the substrate. The modulating power source is configured to be capacitively coupled to a self-capacitive body. The energy harvesting device configured to be capacitively coupled to the self-capacitive body, and the substrate is configured to be capacitively coupled to a portion of the self-capacitive body in direct contact with the substrate.

公开(公告)号：US20210285944A1

公开(公告)日：2021-09-16

申请号：US17198823

申请日：2021-03-11

Applicant: Srikanth Singamaneni ,  Rohit Gupta ,  Jingyi Luan ,  Shantanu Chakrabartty ,  Erica Scheller ,  Jeremiah Morrissey ,  Yixuan Wang ,  Zheyu Wang

Inventor： Srikanth Singamaneni ,  Rohit Gupta ,  Jingyi Luan ,  Shantanu Chakrabartty ,  Erica Scheller ,  Jeremiah Morrissey ,  Yixuan Wang ,  Zheyu Wang

IPC: G01N33/543

Abstract: The present disclosure is directed to refreshable biosensors and methods for synthesizing and refreshing same. In some embodiments, the refreshable biosensor comprises a plasmonic nanoparticle and a biorecognition element, wherein the biorecognition element is encapsulated with at least one of an organosilica polymer layer or a metal organic framework (MOF).

公开(公告)号：US20200259365A1

公开(公告)日：2020-08-13

申请号：US16789007

申请日：2020-02-12

Applicant: Shantanu Chakrabartty ,  Yarub Alazzawi ,  Kenji Aono ,  Erica L. Scheller

Inventor： Shantanu Chakrabartty ,  Yarub Alazzawi ,  Kenji Aono ,  Erica L. Scheller

IPC: H02J50/05 ,  H04B5/00

Abstract: A self-capacitance based remote power delivery device includes a modulating power source electrically coupled to a grounded substrate, an energy harvesting device coupled to the grounded substrate, and the substrate. The modulating power source is configured to be capacitively coupled to a self-capacitive body. The energy harvesting device configured to be capacitively coupled to the self-capacitive body, and the substrate is configured to be capacitively coupled to a portion of the self-capacitive body in direct contact with the substrate.

公开(公告)号：US08056420B2

公开(公告)日：2011-11-15

申请号：US11895635

申请日：2007-08-24

Applicant: Shantanu Chakrabartty ,  Nizar Lajnef ,  Niell G. Elvin ,  Amit S. Gore

Inventor： Shantanu Chakrabartty ,  Nizar Lajnef ,  Niell G. Elvin ,  Amit S. Gore

IPC: G01B7/16

CPC classification number: A61F2/468 ,  A61F2002/30087 ,  A61F2002/3067 ,  A61F2002/488 ,  A61F2250/0002 ,  G01M5/0033 ,  G01M5/0083 ,  G01M5/0091 ,  G01N2203/0073 ,  G01N2203/0623 ,  H01L41/113

Abstract: A self-powered sensor is provided for fatigue monitoring and other low power requirement applications. The self-powered sensor is comprised of: a piezoelectric transducer; a non-volatile memory comprised of at least one floating gate transistor; and a current reference circuit adapted to receive a voltage signal from the piezoelectric transducer and operable to output an injection current into the non-volatile memory. The current reference circuit may employ a floating gate transistor operating in a weak-inversion mode.

Abstract translation: 提供自供电传感器用于疲劳监测和其他低功率需求应用。 自供电传感器包括：压电换能器; 由至少一个浮栅晶体管构成的非易失性存储器; 以及电流参考电路，其适于从压电换能器接收电压信号并且可操作以将注入电流输出到非易失性存储器中。 电流参考电路可以采用以弱反转模式工作的浮栅晶体管。

公开(公告)号：US20080047355A1

公开(公告)日：2008-02-28

申请号：US11895635

申请日：2007-08-24

Applicant: Shantanu Chakrabartty ,  Nizar Lajnef ,  Niell Elvin ,  Amit Gore

Inventor： Shantanu Chakrabartty ,  Nizar Lajnef ,  Niell Elvin ,  Amit Gore

IPC: G01N3/32

CPC classification number: A61F2/468 ,  A61F2002/30087 ,  A61F2002/3067 ,  A61F2002/488 ,  A61F2250/0002 ,  G01M5/0033 ,  G01M5/0083 ,  G01M5/0091 ,  G01N2203/0073 ,  G01N2203/0623 ,  H01L41/113

Abstract: A self-powered sensor is provided for fatigue monitoring and other low power requirement applications. The self-powered sensor is comprised of: a piezoelectric transducer; a non-volatile memory comprised of at least one floating gate transistor; and a current reference circuit adapted to receive a voltage signal from the piezoelectric transducer and operable to output an injection current into the non-volatile memory. The current reference circuit may employ a floating gate transistor operating in a weak-inversion mode.

Abstract translation: 提供自供电传感器用于疲劳监测和其他低功率需求应用。 自供电传感器包括：压电换能器; 由至少一个浮栅晶体管构成的非易失性存储器; 以及电流参考电路，其适于从压电换能器接收电压信号并且可操作以将注入电流输出到非易失性存储器中。 电流参考电路可以采用以弱反转模式工作的浮栅晶体管。