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1. 发明授权

US08694251B2 Attitude estimation for pedestrian navigation using low cost mems accelerometer in mobile applications, and processing methods, apparatus and systems 有权
标题翻译：在移动应用中使用低成本mems加速度计的行人导航姿态估计，以及处理方法，装置和系统
公开(公告)号：US08694251B2
公开(公告)日：2014-04-08
申请号：US13301913
申请日：2011-11-22
申请人： Jayawardan Janardhanan , Goutam Dutta , Varun Tripuraneni
发明人： Jayawardan Janardhanan , Goutam Dutta , Varun Tripuraneni
IPC分类号： G01C21/10
CPC分类号： G01C21/16 , G01C21/165 , G01C21/20 , G01C22/006
摘要： A user-heading determining system (10) for pedestrian use includes a multiple-axis accelerometer (110) having acceleration sensors; a device-heading sensor circuit (115) physically situated in a fixed relationship to the accelerometer (110); an electronic circuit (100) operable to generate signals representing components of acceleration sensed by the accelerometer (110) sensors, and to electronically process at least some part of the signals to produce an estimation of attitude of a user motion with respect to the accelerometer, and further to combine the attitude estimation (750, α) with a device heading estimation (770, ψ) responsive to the device-heading sensor circuit, to produce a user heading estimation (780); and an electronic display (190) responsive to the electronic circuit (100) to display information at least in part based on the user heading estimation. Other systems, circuits and processes are also disclosed.
摘要翻译：用于行人使用的用户航向确定系统（10）包括具有加速度传感器的多轴加速度计（110）物理地位于与所述加速度计（110）固定关系的设备航向传感器电路（115）; 电子电路（100），其可操作以产生表示由所述加速度计（110）传感器感测到的加速度的分量的信号，并且电子处理所述信号的至少一部分以产生相对于所述加速度计的用户运动姿态的估计，并且进一步将所述姿态估计（750，α）与响应于所述设备航向传感器电路的设备航向估计（770，ψ）组合以产生用户航向估计（780）; 以及响应于所述电子电路（100）至少部分地基于所述用户标题估计来显示信息的电子显示器（190）。还公开了其它系统，电路和过程。

2. 发明申请

US20120101369A1 METHODS AND SYSTEMS FOR DETERMINING VASCULAR BODILY LUMEN INFORMATION AND GUIDING MEDICAL DEVICES 审中-公开
标题翻译：用于确定血管内皮细胞信息和指导医疗器械的方法和系统
公开(公告)号：US20120101369A1
公开(公告)日：2012-04-26
申请号：US13305674
申请日：2011-11-28
申请人： Nitin PATIL , Raghavan SUBRAMANIYAN , Goutam DUTTA
发明人： Nitin PATIL , Raghavan SUBRAMANIYAN , Goutam DUTTA
IPC分类号： A61B5/05
CPC分类号： G01R19/2513 , A61B5/02007 , A61B5/0538 , A61B5/064 , A61B5/6853 , A61B6/12 , A61B6/504 , A61B6/541 , A61B8/0891 , A61B8/565 , A61B8/582
摘要： Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants. The methods and systems described herein are advantageous as they do not include injecting a second fluid for the measurements.
摘要翻译：描述了用于确定关于血管体内腔的信息的方法和系统。一种示例性方法包括产生电信号，将电信号传送到血管体腔附近的多个激励元件，响应于输送的电信号测量来自多个感测元件的响应电信号，以及确定流明尺寸。具体实施例包括产生多频电信号。另一实施例包括以多个频率测量多个响应信号。其他实施例包括使用激励元件的空间分集。其他实施例使用用于校准和解嵌这些测量以确定管腔尺寸的方法。还公开了包括引导线，导管和植入物的包括该方法的诊断装置。本文描述的方法和系统是有利的，因为它们不包括为测量注入第二流体。

3. 发明申请

US20110250931A1 Static Heading Detection in Personal Navigation Device 审中-公开
标题翻译：个人导航设备中的静态标题检测
公开(公告)号：US20110250931A1
公开(公告)日：2011-10-13
申请号：US13078748
申请日：2011-04-01
申请人： Tarkesh Pande , Jaiganesh Balakrishnan , Deric Waters , Goutam Dutta , Jayawardan Janardhanan , Sthanunathan Ramakrishnan , Sandeep Rao , Karthik Ramasubramanian
发明人： Tarkesh Pande , Jaiganesh Balakrishnan , Deric Waters , Goutam Dutta , Jayawardan Janardhanan , Sthanunathan Ramakrishnan , Sandeep Rao , Karthik Ramasubramanian
IPC分类号： G01C21/00 , G01S1/08 , H04W88/02 , G01S1/02
CPC分类号： G01S19/47 , G01C21/165
摘要： A personal navigation device configured to determine heading readings continuously using data from a sensor in the personal navigation device. Heading readings are selected corresponding to a periodic event. A representative heading is determined from the selected heading readings. When a portion of the selected heading readings has a value within a range of the representative heading, a static heading indicator is asserted to indicate the personal navigation device is moving in a static heading. The static heading indicator may be used to smooth an estimated trajectory of the personal navigation device.
摘要翻译：一种个人导航装置，被配置为使用来自个人导航装置中的传感器的数据连续地确定航向读数。根据周期性事件选择标题读数。从所选标题读数确定代表性标题。当所选航标读数的一部分具有在代表性标题的范围内的值时，断言静态航向指示符以指示个人导航设备正在静态航向中移动。静态航向指示符可以用于平滑个人导航设备的估计轨迹。

4. 发明申请

US20070032971A1 Method and system for determining noise components of an analog-to-digital converter 有权
公开(公告)号：US20070032971A1
公开(公告)日：2007-02-08
申请号：US11185131
申请日：2005-07-20
申请人： Goutam Dutta , Vineet Mishra
发明人： Goutam Dutta , Vineet Mishra
IPC分类号： G01R25/00 , G01R27/00
CPC分类号： G01R29/26 , G01R31/31709
摘要： A method and system is provided for determining noise components of an analog-to-digital converter. In one aspect of the invention, a method comprises providing an input signal to a signal input and a clock input of the ADC, outputting a plurality of samples at a sampled phase on the input signal for a plurality of sampled phases, and determining a jitter noise factor value, a reference noise factor value, and a total noise spectrum based on the plurality of samples for each of the plurality of sampled phases. A least means square algorithm is performed on the plurality of jitter noise factor values, reference noise factor values, and total noise spectra to estimate at least one of a jitter noise component and a reference noise component.

5. 发明授权

US10330491B2 Robust step detection using low cost MEMS accelerometer in mobile applications, and processing methods, apparatus and systems 有权
公开(公告)号：US10330491B2
公开(公告)日：2019-06-25
申请号：US13302329
申请日：2011-11-22
申请人： Jayawardan Janardhanan , Sandeep Rao , Goutam Dutta
发明人： Jayawardan Janardhanan , Sandeep Rao , Goutam Dutta
IPC分类号： G06F19/00 , G01P21/00 , G01C22/00 , G01C21/18 , G06F1/16 , G01C21/16 , G01C21/20 , G01P15/00 , G01F15/00
摘要： A system (10) for pedestrian use includes an accelerometer (110) having multiple electronic sensors; an electronic circuit (100) operable to generate a signal stream representing magnitude of overall acceleration sensed by the accelerometer (110), and to electronically correlate a sliding window (520) of the signal stream with itself to produce peaks at least some of which represent walking steps, and further operable to electronically execute a periodicity check (540) to compare different step periods for similarity, and if sufficiently similar then to update (560) a portion of the circuit substantially representing a walking-step count; and an electronic display (190) responsive to the electronic circuit (100) to display information at least in part based on the step count. Other systems, electronic circuits and processes are disclosed.

6. 发明授权

US08494794B2 Methods and systems for determining vascular bodily lumen information and guiding medical devices 有权
公开(公告)号：US08494794B2
公开(公告)日：2013-07-23
申请号：US13305630
申请日：2011-11-28
申请人： Goutam Dutta , Nitin Patil , Raghavan Subramaniyan
发明人： Goutam Dutta , Nitin Patil , Raghavan Subramaniyan
IPC分类号： G01R25/00
CPC分类号： G01R19/2513 , A61B5/02007 , A61B5/0538 , A61B5/064 , A61B5/6853 , A61B6/12 , A61B6/504 , A61B6/541 , A61B8/0891 , A61B8/565 , A61B8/582
摘要： Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants. The methods and systems described herein are advantageous as they do not include injecting a second fluid for the measurements.

7. 发明授权

US08374689B2 Methods and systems for determining vascular bodily lumen information and guiding medical devices 有权
标题翻译：用于确定血管体内信息并指导医疗器械的方法和系统
公开(公告)号：US08374689B2
公开(公告)日：2013-02-12
申请号：US13305610
申请日：2011-11-28
申请人： Venugopal Gopinathan , Raghavan Subramaniyan , Goutam Dutta , Nitin Patil , Abhijit Patki
发明人： Venugopal Gopinathan , Raghavan Subramaniyan , Goutam Dutta , Nitin Patil , Abhijit Patki
IPC分类号： A61B5/00
CPC分类号： A61B5/1075 , A61B5/02007 , A61B5/0538 , A61B5/064 , A61B5/066 , A61B5/068 , A61B5/1076 , A61B5/1079 , A61B5/4851 , A61B5/489 , A61B5/6851 , A61B5/6852 , A61B5/6853 , A61B5/7271 , A61B6/504 , A61B6/5211 , A61B6/541 , A61B8/565 , A61B8/582 , A61B2034/2065 , A61B2090/061 , A61B2090/3966 , A61B2090/3983 , A61B2505/05 , A61B2562/043 , A61B2562/08 , A61M2025/0166 , G06T7/246 , G06T2207/10116 , G06T2207/30021 , G06T2207/30101 , G06T2207/30204 , G06T2207/30241
摘要： Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants. The methods and systems described herein are advantageous as they do not include injecting a second fluid for the measurements.
摘要翻译：描述了用于确定关于血管体内腔的信息的方法和系统。一种示例性方法包括产生电信号，将电信号传送到血管体腔附近的多个激励元件，响应于输送的电信号测量来自多个感测元件的响应电信号，以及确定流明尺寸。具体实施例包括产生多频电信号。另一实施例包括以多个频率测量多个响应信号。其他实施例包括使用激励元件的空间分集。其他实施例使用用于校准和解嵌这些测量以确定管腔尺寸的方法。还公开了包括引导线，导管和植入物的包括该方法的诊断装置。本文描述的方法和系统是有利的，因为它们不包括为测量注入第二流体。

8. 发明申请

US20120136573A1 ATTITUDE ESTIMATION FOR PEDESTRIAN NAVIGATION USING LOW COST MEMS ACCELEROMETER IN MOBILE APPLICATIONS, AND PROCESSING METHODS, APPARATUS AND SYSTEMS 有权
标题翻译：在移动应用中使用低成本MEMS加速度计的PEDESTRIAN导航的姿态估计和处理方法，装置和系统
公开(公告)号：US20120136573A1
公开(公告)日：2012-05-31
申请号：US13301913
申请日：2011-11-22
申请人： Jayawardan Janardhanan , Goutam Dutta , Varun Tripuraneni
发明人： Jayawardan Janardhanan , Goutam Dutta , Varun Tripuraneni
IPC分类号： G01C21/16
CPC分类号： G01C21/16 , G01C21/165 , G01C21/20 , G01C22/006
摘要： A user-heading determining system (10) for pedestrian use includes a multiple-axis accelerometer (110) having acceleration sensors; a device-heading sensor circuit (115) physically situated in a fixed relationship to the accelerometer (110); an electronic circuit (100) operable to generate signals representing components of acceleration sensed by the accelerometer (110) sensors, and to electronically process at least some part of the signals to produce an estimation of attitude of a user motion with respect to the accelerometer, and further to combine the attitude estimation (750, α) with a device heading estimation (770, ψ) responsive to the device-heading sensor circuit, to produce a user heading estimation (780); and an electronic display (190) responsive to the electronic circuit (100) to display information at least in part based on the user heading estimation. Other systems, circuits and processes are also disclosed.
摘要翻译：用于行人使用的用户航向确定系统（10）包括具有加速度传感器的多轴加速度计（110）物理地位于与所述加速度计（110）固定关系的设备航向传感器电路（115）; 电子电路（100），其可操作以产生表示由所述加速度计（110）传感器感测到的加速度的分量的信号，并且电子处理所述信号的至少一部分以产生相对于所述加速度计的用户运动姿态的估计，并且进一步将所述姿态估计（750，α）与响应于所述设备航向传感器电路的设备航向估计（770，ψ）组合以产生用户航向估计（780）; 以及响应于所述电子电路（100）至少部分地基于所述用户标题估计来显示信息的电子显示器（190）。还公开了其它系统，电路和过程。

9. 发明申请

US20120071782A1 METHODS AND SYSTEMS FOR DETERMINING VASCULAR BODILY LUMEN INFORMATION AND GUIDING MEDICAL DEVICES 有权
公开(公告)号：US20120071782A1
公开(公告)日：2012-03-22
申请号：US13305630
申请日：2011-11-28
申请人： Nitin PATIL , Raghavan SUBRAMANIYAN , Goutam DUTTA
发明人： Nitin PATIL , Raghavan SUBRAMANIYAN , Goutam DUTTA
IPC分类号： A61B5/053 , G01R27/00 , G06F19/00 , G01R19/00
CPC分类号： G01R19/2513 , A61B5/02007 , A61B5/0538 , A61B5/064 , A61B5/6853 , A61B6/12 , A61B6/504 , A61B6/541 , A61B8/0891 , A61B8/565 , A61B8/582
摘要： Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants. The methods and systems described herein are advantageous as they do not include injecting a second fluid for the measurements.

10. 发明申请

US20110306867A1 Methods and Systems for Determining Vascular Bodily Lumen Information and Guiding Medical Devices 有权
标题翻译：用于确定血管内体液信息和指导医疗器械的方法和系统
公开(公告)号：US20110306867A1
公开(公告)日：2011-12-15
申请号：US13159298
申请日：2011-06-13
申请人： Venugopal Gopinathan , Raghavan Subramaniyan , Goutam Dutta , Nitin Patil , Abhijit Patki
发明人： Venugopal Gopinathan , Raghavan Subramaniyan , Goutam Dutta , Nitin Patil , Abhijit Patki
IPC分类号： A61B5/05
CPC分类号： A61B5/1075 , A61B5/02007 , A61B5/0538 , A61B5/064 , A61B5/066 , A61B5/068 , A61B5/1076 , A61B5/1079 , A61B5/4851 , A61B5/489 , A61B5/6851 , A61B5/6852 , A61B5/6853 , A61B5/7271 , A61B6/504 , A61B6/5211 , A61B6/541 , A61B8/565 , A61B8/582 , A61B2034/2065 , A61B2090/061 , A61B2090/3966 , A61B2090/3983 , A61B2505/05 , A61B2562/043 , A61B2562/08 , A61M2025/0166 , G06T7/246 , G06T2207/10116 , G06T2207/30021 , G06T2207/30101 , G06T2207/30204 , G06T2207/30241
摘要： Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants. The methods and systems described herein are advantageous as they do not include injecting a second fluid for the measurements.
摘要翻译：描述了用于确定关于血管体内腔的信息的方法和系统。一种示例性方法包括产生电信号，将电信号传送到血管体腔附近的多个激励元件，响应于输送的电信号测量来自多个感测元件的响应电信号，以及确定流明尺寸。具体实施例包括产生多频电信号。另一实施例包括以多个频率测量多个响应信号。其他实施例包括使用激励元件的空间分集。其他实施例使用用于校准和解嵌这些测量以确定管腔尺寸的方法。还公开了包括引导线，导管和植入物的包括该方法的诊断装置。本文描述的方法和系统是有利的，因为它们不包括为测量注入第二流体。

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