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1. 发明授权

US08659975B2 Vibration generation and detection in shear wave dispersion ultrasound vibrometry with large background motions 有权
标题翻译：具有大背景运动的剪切波分散超声波振动的振动产生和检测
公开(公告)号：US08659975B2
公开(公告)日：2014-02-25
申请号：US12992228
申请日：2009-05-15
申请人： James F. Greenleaf , Shigao Chen , Yi Zheng , Aiping Yao
发明人： James F. Greenleaf , Shigao Chen , Yi Zheng , Aiping Yao
IPC分类号： G01S15/00
CPC分类号： A61B8/485 , G01S7/52038
摘要： A method for measuring a mechanical property of a subject includes using an ultrasonic transducer to apply ultrasonic vibration pulses to a vibration origin in the subject in an on-off time sequence in order to impart a harmonic motion at a prescribed frequency to the subject, and when the vibration pulses are off, preferably using the same transducer to apply ultrasonic detection pulses to a motion detection point and to receive echo signals therefrom in order to sense the harmonic motion on the subject at the motion detection point The ultrasonic detection pulses are interspersed with the vibration pulses and can be applied in a non-uniform manner From the received ultrasonic echo signals, a harmonic signal is detected and a characteristic such as amplitude or phase of the detected harmonic signal is calculated using a Kalman filter or interpolation.
摘要翻译：用于测量受试者的机械性质的方法包括使用超声波换能器以开关时间顺序将超声波振动脉冲施加到被检体中的振动起点，以向受检者施加规定频率的谐波运动，以及当振动脉冲关闭时，优选地使用相同的换能器将超声波检测脉冲施加到运动检测点并从其接收回波信号，以便感测在运动检测点处的对象上的谐波运动。超声波检测脉冲分布在可以以不均匀的方式施加振动脉冲从接收到的超声波回波信号中，检测出谐波信号，并且使用卡尔曼滤波器或内插来计算检测到的谐波信号的振幅或相位的特性。

2. 发明申请

US20110319756A1 Method for Ultrasound Vibrometry Using Orthogonal Basis Functions 有权
标题翻译：使用正交基函数的超声波振幅法
公开(公告)号：US20110319756A1
公开(公告)日：2011-12-29
申请号：US13254227
申请日：2010-03-09
申请人： Yi Zheng , Aiping Yao , James F. Greenleaf , Shigao Chen , Matthew W. Urban
发明人： Yi Zheng , Aiping Yao , James F. Greenleaf , Shigao Chen , Matthew W. Urban
IPC分类号： A61B8/00
CPC分类号： G01S7/52036 , A61B8/485 , G01S7/52022 , G01S15/8952
摘要： A method for measuring a mechanical property of a subject includes using an ultrasound transducer to apply ultrasonic vibration pulses to a location in a subject in order to induce shear waves at multiple prescribed orthogonal frequencies in the subject. The ultrasound transducer is directed by an excitation signal that is composed of multiple orthogonal basis functions, each having a given frequency component corresponding to the prescribed orthogonal frequencies. The power level of each orthogonal basis function is independently adjustable. The excitation signal can be sparsely sampled, or portions of the excitation signal can be removed in order to improve tissue vibration and to provide for the interleaving ultrasonic vibration and detection pulses. Ultrasonic detection pulses are applied to at least one motion detection point, from which echo signals are received. From the received echo signals, a motion signal is determined, from which mechanical properties of the subject are calculated.
摘要翻译：用于测量受试者的机械性质的方法包括使用超声波换能器将超声波振动脉冲施加到受试者中的位置，以便在受试者中以多个规定的正交频率诱发剪切波。超声换能器由多个正交基函数组成的激励信号引导，每个正交基函数具有对应于规定正交频率的给定频率分量。每个正交基函数的功率电平是独立可调的。励磁信号可以被稀疏地采样，或者可以去除激励信号的部分，以便改善组织振动并提供交织超声波振动和检测脉冲。超声波检测脉冲被施加到至少一个运动检测点，从该运动检测点接收回波信号。从所接收的回波信号中，确定运动信号，从而计算被摄体的机械性质。

3. 发明申请

US20110063950A1 VIBRATION GENERATION AND DETECTION IN SHEAR WAVE DISPERSION ULTRASOUND VIBROMETRY WITH LARGE BACKGROUND MOTIONS 有权
标题翻译：振动发生和检测在剪切波浪分散超声波振动与大背景运动
公开(公告)号：US20110063950A1
公开(公告)日：2011-03-17
申请号：US12992228
申请日：2009-05-15
申请人： James F. Greenleaf , Shigao Chen , Yi Zheng , Aiping Yao
发明人： James F. Greenleaf , Shigao Chen , Yi Zheng , Aiping Yao
IPC分类号： G01S15/88
CPC分类号： A61B8/485 , G01S7/52038
摘要： A method for measuring a mechanical property of a subject includes using an ultrasonic transducer to apply ultrasonic vibration pulses to a vibration origin in the subject in an on-off time sequence in order to impart a harmonic motion at a prescribed frequency to the subject, and when the vibration pulses are off, preferably using the same transducer to apply ultrasonic detection pulses to a motion detection point and to receive echo signals therefrom in order to sense the harmonic motion on the subject at the motion detection point The ultrasonic detection pulses are interspersed with the vibration pulses and can be applied in a non-uniform manner From the received ultrasonic echo signals, a harmonic signal is detected and a characteristic such as amplitude or phase of the detected harmonic signal is calculated using a Kalman filter or interpolation.
摘要翻译：用于测量受试者的机械性质的方法包括使用超声波换能器以开关时间顺序将超声波振动脉冲施加到被检体中的振动起点，以向受检者施加规定频率的谐波运动，以及当振动脉冲关闭时，优选地使用相同的换能器将超声波检测脉冲施加到运动检测点并从其接收回波信号，以便感测在运动检测点处的对象上的谐波运动。超声波检测脉冲分布在可以以不均匀的方式施加振动脉冲从接收到的超声波回波信号中，检测出谐波信号，并且使用卡尔曼滤波器或内插来计算检测到的谐波信号的振幅或相位的特性。

4. 发明授权

US06813006B1 Stand-alone speedometer directly measuring the translational speed based on the difference between dispersive dragging effects of different media 失效
标题翻译：基于不同介质的分散拖动效果的差异，独立速度计直接测量平移速度
公开(公告)号：US06813006B1
公开(公告)日：2004-11-02
申请号：US10431492
申请日：2003-05-07
申请人： Ruyong Wang , Yi Zheng , Aiping Yao
发明人： Ruyong Wang , Yi Zheng , Aiping Yao
IPC分类号： G01P336
CPC分类号： G01P3/36 , G01P3/50 , G01S17/50
摘要： A stand-alone speedometer includes an electromagnetic wave source, a beam splitter, a detector and two media with different dispersive dragging effects. An electromagnetic wave is divided into two beams by the beam splitter. The two beams pass the two media differently and they combine again to go on to a detector, giving rise to interference which records the travel-time difference between two beams. Because the two media have different dispersive dragging effects on the propagation of the electromagnetic wave, measuring the change of the travel-time difference when the apparatus is stationary to that when the apparatus is moving will give the translational speed of the apparatus.
摘要翻译：独立的速度计包括电磁波源，分束器，检测器和具有不同分散拖动效果的两种介质。电磁波由分束器分成两束。两个光束不同地通过两个介质，并且它们再次组合以进入检测器，从而产生记录两个光束之间的行进时间差的干扰。由于两种介质对电磁波的传播具有不同的色散拖曳效果，因此当设备静止时测量行程时差的变化与设备运动时的差异变化将给出设备的平移速度。

5. 发明授权

US08602994B2 Method for ultrasound vibrometry using orthogonal basis functions 有权
标题翻译：使用正交基函数的超声波振幅测量方法
公开(公告)号：US08602994B2
公开(公告)日：2013-12-10
申请号：US13254227
申请日：2010-03-09
申请人： Yi Zheng , Aiping Yao , James F. Greenleaf , Shigao Chen , Matthew W. Urban
发明人： Yi Zheng , Aiping Yao , James F. Greenleaf , Shigao Chen , Matthew W. Urban
IPC分类号： A61B8/00 , G01H1/00
CPC分类号： G01S7/52036 , A61B8/485 , G01S7/52022 , G01S15/8952
摘要： A method for measuring a mechanical property of a subject includes using an ultrasound transducer to apply ultrasonic vibration pulses to a location in a subject in order to induce shear waves at multiple prescribed orthogonal frequencies in the subject. The ultrasound transducer is directed by an excitation signal that is composed of multiple orthogonal basis functions, each having a given frequency component corresponding to the prescribed orthogonal frequencies. The power level of each orthogonal basis function is independently adjustable. The excitation signal can be sparsely sampled, or portions of the excitation signal can be removed in order to improve tissue vibration and to provide for the interleaving ultrasonic vibration and detection pulses. Ultrasonic detection pulses are applied to at least one motion detection point, from which echo signals are received. From the received echo signals, a motion signal is determined, from which mechanical properties of the subject are calculated.
摘要翻译：用于测量受试者的机械性质的方法包括使用超声波换能器将超声波振动脉冲施加到受试者中的位置，以便在受试者中以多个规定的正交频率诱发剪切波。超声换能器由多个正交基函数组成的激励信号引导，每个正交基函数具有对应于规定正交频率的给定频率分量。每个正交基函数的功率电平是独立可调的。励磁信号可以被稀疏地采样，或者可以去除激励信号的部分，以便改善组织振动并提供交织超声波振动和检测脉冲。超声波检测脉冲被施加到至少一个运动检测点，从该运动检测点接收回波信号。从所接收的回波信号中，确定运动信号，从而计算被摄体的机械性质。

6. 发明授权

US07586587B1 Stand-alone speedometer using two spaced laser beams 失效
标题翻译：独立的速度计使用两个间隔的激光束
公开(公告)号：US07586587B1
公开(公告)日：2009-09-08
申请号：US11035659
申请日：2005-01-14
申请人： Ruyong Wang , Yi Zheng , Aiping Yao
发明人： Ruyong Wang , Yi Zheng , Aiping Yao
IPC分类号： G01P3/36 , G01C19/72
CPC分类号： G01P3/50
摘要： A stand-alone speedometer directly measuring the translational speed of a moving body comprises a source emitting two spaced light beams which interfere each other, mirrors or beam splitters changing directions of propagation of light beams, and a detector measuring the phase difference of light beams. Compared with the phase difference when the speedometer is stationary, the detector measures a first-order change of phase differences, which indicates the motion speed.
摘要翻译：直接测量移动体的平移速度的独立速度计包括发射彼此干扰的两个间隔开的光束的源，改变光束传播方向的反射镜或分束器，以及测量光束相位差的检测器。与速度计静止时的相位差相比，检测器测量相位差的一阶变化，表示运动速度。

7. 发明授权

US07406066B2 Asynchronous modulation and demodulation for spread spectrum and code-division multiple access communication 失效
标题翻译：用于扩频和码分多址通信的异步调制和解调
公开(公告)号：US07406066B2
公开(公告)日：2008-07-29
申请号：US10684150
申请日：2003-10-09
申请人： Yi Zheng , Aiping Yao
发明人： Yi Zheng , Aiping Yao
IPC分类号： H04B7/216
CPC分类号： H04J13/00 , H04B1/70718 , H04J13/0022 , H04J13/16
摘要： The present invention of the modulation and demondulation removes the carry synchronization requirement for spread spectrum systems and code-division multiple access communication systems. The invention uses the PN codes that are specially selected and asynchronous demodulation procedure. If number of transmitters is limited, the Multiple Access Interference (MAI) due to carry differences of transmitters can be completely cancelled. Using this invention, signal from a desired transmitter can be demodulated and detected from received signals included from other transmitters in multiple access applications, even when the frequencies of transmitters are different from each other and are not synchronized with a receiver. The invention greatly reduces complexities of a wireless system where Code Division Multiple Access (CDMA) or spread spectrum is used. It expands applications of wireless communication. One of the applications is for a CDMA communication for multiple users without a centralized base station.
摘要翻译：调制和解调的本发明消除了扩频系统和码分多址通信系统的进位同步要求。本发明使用特殊选择的PN码和异步解调程序。如果发射机数量有限，则由于发射机的差异导致的多址干扰（MAI）可以被完全取消。使用本发明，即使当发射机的频率彼此不同并且与接收机不同步时，来自所需发射机的信号可以从在多个接入应用中的其他发射机所包含的接收信号中进行解调和检测。本发明大大降低了使用码分多址（CDMA）或扩频的无线系统的复杂性。它扩展了无线通信的应用。其中一个应用是用于没有集中式基站的多个用户的CDMA通信。

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