公开(公告)号：US08054863B2

公开(公告)日：2011-11-08

申请号：US12132776

申请日：2008-06-04

Applicant: Yugang Ma ,  Xiaobing Sun ,  Kanzo Okada ,  Jian Zhang ,  Junjun Wang

Inventor： Yugang Ma ,  Xiaobing Sun ,  Kanzo Okada ,  Jian Zhang ,  Junjun Wang

IPC: H04B1/00

CPC classification number: G01S7/285 ,  G01S13/0209 ,  G01S13/103 ,  H04B1/7163

Abstract: A system for estimating range to an object comprising a system for estimating range to an object comprising a transmitter to transmit at least one UWB signal, a receiver to receive at least one UWB signal, a sampler to sample the received UWB signal depending on a plurality of clock and/or sample pulses having a first frequency, and a circuit and/or processor configured to generate a fractional signal having a second frequency that is lower that the first frequency and a phase that is dependant on the delay between when the UWB signal is actually received and when the received UWB signal is first sampled, and determine the range based on at least a first number of clock or sample pulses between transmitting and receiving the UWB signal and the phase of the fractional signal. Also a method of estimating range to an object.

Abstract translation: 一种用于估计对象的范围的系统，包括用于估计到包括发送器的对象的范围的系统的系统，用于发送至少一个UWB信号，接收器接收至少一个UWB信号，采样器根据多个样本对所接收的UWB信号进行采样 具有第一频率的时钟和/或采样脉冲，以及电路和/或处理器，其被配置为生成具有第二频率的分数信号，该第二频率低于第一频率和取决于UWB信号之间的延迟的相位 实际上被接收并且当接收到的UWB信号被首先采样时，并且基于在发送和接收UWB信号之间的至少第一数量的时钟或采样脉冲和分数信号的相位来确定该范围。 也是估计对象的范围的方法。

公开(公告)号：US20080170721A1

公开(公告)日：2008-07-17

申请号：US12001380

申请日：2007-12-11

Applicant: Xiaobing Sun ,  Kanzo Okada ,  Peng Gao ,  Ching Biing Yeo

Inventor： Xiaobing Sun ,  Kanzo Okada ,  Peng Gao ,  Ching Biing Yeo

IPC: H03G5/00

CPC classification number: H03G5/165 ,  G10L21/038 ,  H04R3/04 ,  H04R2499/11

Abstract: A method for transforming an audio signal and a system employing that method is disclosed. The method proceeds by extracting from the signal components that fall within a stop band, for example, using one or more low-pass filters. Then, a set of one or more harmonics of the extracted components is generated by down-sampling to create an intermediate signal, which is then repeated. Each harmonic is then weighted by controlling its gain by application to it of a respective weighting factor, the factors being determined by the psychoacoustic properties of a system that will reproduce the signal. Then, the weighted harmonics are added to the audio signal (which may have been subject to a delay to ensure synchronisation) to create an output signal.

Abstract translation: 公开了一种用于变换音频信号的方法和采用该方法的系统。 该方法通过从例如使用一个或多个低通滤波器的停止频带内的信号分量中提取来进行。 然后，通过下采样产生提取的分量的一个或多个谐波的集合，以产生中间信号，然后重复该中间信号。 然后通过将各自的加权因子应用于其各自的加权因子来加权每个谐波，该因子由将再现信号的系统的心理声学特性决定。 然后，将加权的谐波添加到音频信号（其可能经历延迟以确保同步）以产生输出信号。

公开(公告)号：US20070237213A1

公开(公告)日：2007-10-11

申请号：US11695415

申请日：2007-04-02

Applicant: Yugang MA ,  Jin Xu ,  Xiaobing Sun ,  Kanzo Okada

Inventor： Yugang MA ,  Jin Xu ,  Xiaobing Sun ,  Kanzo Okada

IPC: H04B1/38 ,  H04L1/02 ,  H04B7/10

CPC classification number: H04B1/719 ,  H04B1/7183

Abstract: A method for estimating one or more parameters of a ultra wideband signal and a receiver system for receiving ultra wideband signals is provided. The method for estimating one or more parameters of a signal in an ultra wide band system including estimating the parameter(s) for a first signal element in a received signal then removing this signal element from the signal to obtain a modified signal. The parameter(s) for a number of further signal elements are then estimated and these elements are removed from the modified signal to form a refined signal. The parameter(s) for the first signal element are re-estimated to re-define the first signal element based on the refined signal minus the signal element having the greatest amplitude. The parameter(s) for the signal element having the greatest amplitude are re-estimated to re-define this signal element. The steps are repeated to generate a refined estimate of the parameter(s) for the first signal element. There is also disclosed a receiver for performing the above steps.

Abstract translation: 提供了一种用于估计超宽带信号的一个或多个参数的方法和用于接收超宽带信号的接收机系统。 一种用于估计超宽带系统中的信号的一个或多个参数的方法，包括估计接收信号中的第一信号元素的参数，然后从信号中去除该信号元素以获得修改的信号。 然后估计多个其它信号元素的参数，并且从修改的信号中去除这些元素以形成精确的信号。 第一信号元件的参数被重新估计，以基于精化信号减去具有最大振幅的信号元件来重新定义第一信号元件。 重新估计具有最大幅度的信号元素的参数以重新定义该信号元素。 重复这些步骤以产生第一信号元素的参数的精确估计。 还公开了一种用于执行上述步骤的接收器。

公开(公告)号：US07732987B2

公开(公告)日：2010-06-08

申请号：US12154326

申请日：2008-05-22

Applicant: Peng Gao ,  Ching Biing Yeo ,  Xiaobing Sun ,  Kanzo Okada

Inventor： Peng Gao ,  Ching Biing Yeo ,  Xiaobing Sun ,  Kanzo Okada

IPC: H01L41/09

CPC classification number: B06B1/0622 ,  Y10T29/42

Abstract: A transducer array comprises a conductive back plate 32, a conductive front plate 33 having openings 62, and a plurality of piezoelectric vibrator elements 31 located in an array between the plates. The vibrator elements 31 are two-layer elements which each include a metal portion 311 and a PZT element 312. These elements 311, 312 are in electrical contact with the respective plates. The vibrator elements 31 are attached to support elements 51 upstanding as part of the back plate 32. The transducer array can be formed as a batch process in which the vibrator elements 31 are formed simultaneously, and then simultaneously attached to the support elements 51.

Abstract translation: 传感器阵列包括导电背板32，具有开口62的导电前板33和位于板之间的阵列中的多个压电振动器元件31。 振动器元件31是两层元件，每个元件包括金属部分311和PZT元件312.这些元件311,312与相应的板电接触。 振动器元件31附接到作为背板32的一部分直立的支撑元件51.换能器阵列可以形成为其中同时形成振动元件31，然后同时附接到支撑元件51的间歇过程。

公开(公告)号：US07706426B2

公开(公告)日：2010-04-27

申请号：US11695415

申请日：2007-04-02

Applicant: Yugang Ma ,  Jun Xu ,  Xiaobing Sun ,  Kanzo Okada

Inventor： Yugang Ma ,  Jun Xu ,  Xiaobing Sun ,  Kanzo Okada

IPC: H04B1/69 ,  H04L27/06

CPC classification number: H04B1/719 ,  H04B1/7183

Abstract: A method for estimating one or more parameters of a ultra wideband signal and a receiver system for receiving ultra wideband signals is provided. The method for estimating one or more parameters of a signal in an ultra wide band system including estimating the parameter(s) for a first signal element in a received signal then removing this signal element from the signal to obtain a modified signal. The parameter(s) for a number of further signal elements are then estimated and these elements are removed from the modified signal to form a refined signal. The parameter(s) for the first signal element are re-estimated to re-define the first signal element based on the refined signal minus the signal element having the greatest amplitude. The parameter(s) for the signal element having the greatest amplitude are re-estimated to re-define this signal element. The steps are repeated to generate a refined estimate of the parameter(s) for the first signal element. There is also disclosed a receiver for performing the above steps.

Abstract translation: 提供了一种用于估计超宽带信号的一个或多个参数的方法和用于接收超宽带信号的接收机系统。 一种用于估计超宽带系统中的信号的一个或多个参数的方法，包括估计接收信号中的第一信号元素的参数，然后从信号中去除该信号元素以获得修改的信号。 然后估计多个其它信号元素的参数，并且从修改的信号中去除这些元素以形成精确的信号。 第一信号元件的参数被重新估计，以便基于精化信号减去具有最大振幅的信号元件重新定义第一信号元件。 重新估计具有最大幅度的信号元素的参数以重新定义该信号元素。 重复这些步骤以产生第一信号元素的参数的精确估计。 还公开了一种用于执行上述步骤的接收器。

公开(公告)号：US07683825B2

公开(公告)日：2010-03-23

申请号：US11810132

申请日：2007-06-04

Applicant: Xiaobing Sun ,  Yugang Ma ,  Jin Xu ,  Kanzo Okada

Inventor： Xiaobing Sun ,  Yugang Ma ,  Jin Xu ,  Kanzo Okada

IPC: G01S13/08

CPC classification number: G01S7/28 ,  G01S13/103

Abstract: A method of measuring distance between a target and a receiver in a ranging system may comprise transmitting a first pulse at a first time determined by a sampling clock in a receiver, receiving the first pulse, sampling the first pulse at a predetermined amplitude threshold using the sampling clock and determining the time of arrival of the first pulse in terms of a number of periods of the sampling clock after the first pulse was transmitted. This may be repeated for a second pulse and the average times of arrival of the first and second pulses are determined to obtain an averaged estimated time of arrival. The distance between the target and the receiver may be determined by multiplying the averaged estimated time of arrival by the speed of propagation of the transmitted pulses. There is also disclosed an apparatus for measuring distance.

Abstract translation: 一种测量测距系统中的目标和接收机之间的距离的方法可以包括在接收机中由采样时钟确定的第一时间发射第一脉冲，接收第一脉冲，使用第一脉冲以预定的幅度阈值采样第一脉冲 采样时钟，并且根据发送第一脉冲之后的采样时钟的周期数来确定第一脉冲的到达时间。 这可以针对第二脉冲重复，并且确定第一和第二脉冲的平均到达次数以获得平均的估计到达时间。 目标和接收机之间的距离可以通过将平均的估计到达时间乘以传输脉冲的传播速度来确定。 还公开了一种用于测量距离的装置。

公开(公告)号：US20080218404A1

公开(公告)日：2008-09-11

申请号：US11169119

申请日：2005-06-28

Applicant: Yugang Ma ,  Xiaobing Sun ,  Jin Xu ,  Kanzo Okada

Inventor： Yugang Ma ,  Xiaobing Sun ,  Jin Xu ,  Kanzo Okada

IPC: G01S13/08

CPC classification number: G01S13/0209 ,  G01S13/06

Abstract: A system and method for determining position of, for example, a robot based on reflected signals comprises a transmitter for transmitting signals in a number of directions within a range of directions and a receiver for receiving echoes of the signals from any direction in the range. The transmitter has a first rotatable antenna and the receiver has a second rotatable antenna which is mechanically couplable to the second antenna. The received echoes are processed by a processor to derive echo data signals indicative of the distance of the system to one or more reflective surfaces and the direction of the reflective surface(s) relative to the system. The processor is arranged to determine the position of the system relative to a starting position from the derived echo data signals indicative of the distance of the system to the reflective surface(s) and the direction of the reflective surface(s) relative to the system.

Abstract translation: 用于基于反射信号来确定例如机器人的位置的系统和方法包括用于在方向范围内的多个方向上发送信号的发射机和用于从该范围内的任何方向接收信号的回波的接收机。 发射器具有第一可旋转天线，并且接收器具有可机械耦合到第二天线的第二可旋转天线。 所接收的回波由处理器处理以得到指示系统到一个或多个反射表面的距离和相对于系统的反射表面的方向的回波数据信号。 处理器被布置成从指示系统到反射表面的距离的导出的回波数据信号和反射表面相对于系统的方向来确定系统相对于起始位置的位置 。

公开(公告)号：US20080298432A1

公开(公告)日：2008-12-04

申请号：US12132776

申请日：2008-06-04

Applicant: Yugang Ma ,  Xiaobing Sun ,  Kanzo Okada ,  Jian Zhang ,  Junjun Wang

Inventor： Yugang Ma ,  Xiaobing Sun ,  Kanzo Okada ,  Jian Zhang ,  Junjun Wang

IPC: H04B1/69

CPC classification number: G01S7/285 ,  G01S13/0209 ,  G01S13/103 ,  H04B1/7163

Abstract: A system for estimating range to an object comprising a system for estimating range to an object comprising a transmitter to transmit at least one UWB signal, a receiver to receive at least one UWB signal, a sampler to sample the received UWB signal depending on a plurality of clock and/or sample pulses having a first frequency, and a circuit and/or processor configured to generate a fractional signal having a second frequency that is lower that the first frequency and a phase that is dependant on the delay between when the UWB signal is actually received and when the received UWB signal is first sampled, and determine the range based on at least a first number of clock or sample pulses between transmitting and receiving the UWB signal and the phase of the fractional signal. Also a method of estimating range to an object.

Abstract translation: 一种用于估计对象的范围的系统，包括用于估计到包括发送器的对象的范围的系统的系统，用于发送至少一个UWB信号，接收器接收至少一个UWB信号，采样器根据多个样本对所接收的UWB信号进行采样 具有第一频率的时钟和/或采样脉冲，以及电路和/或处理器，其被配置为生成具有第二频率的分数信号，该第二频率低于第一频率和取决于UWB信号之间的延迟的相位 实际上被接收并且当接收到的UWB信号被首先采样时，并且基于在发送和接收UWB信号之间的至少第一数量的时钟或采样脉冲和分数信号的相位来确定该范围。 也是估计对象的范围的方法。

公开(公告)号：US20080024355A1

公开(公告)日：2008-01-31

申请号：US11810132

申请日：2007-06-04

Applicant: Xiaobing Sun ,  Yugang Ma ,  Jin Xu ,  Kanzo Okada

Inventor： Xiaobing Sun ,  Yugang Ma ,  Jin Xu ,  Kanzo Okada

IPC: G01S13/08

CPC classification number: G01S7/28 ,  G01S13/103

Abstract: A method of measuring distance between a target and a receiver in a ranging system may comprise transmitting a first pulse at a first time determined by a sampling clock in a receiver, receiving the first pulse, sampling the first pulse at a predetermined amplitude threshold using the sampling clock and determining the time of arrival of the first pulse in terms of a number of periods of the sampling clock after the first pulse was transmitted. This may be repeated for a second pulse and the average times of arrival of the first and second pulses are determined to obtain an averaged estimated time of arrival. The distance between the target and the receiver may be determined by multiplying the averaged estimated time of arrival by the speed of propagation of the transmitted pulses. There is also disclosed an apparatus for measuring distance.

Abstract translation: 一种测量测距系统中的目标和接收机之间的距离的方法可以包括在接收机中由采样时钟确定的第一时间发射第一脉冲，接收第一脉冲，使用第一脉冲以预定的幅度阈值采样第一脉冲 采样时钟，并且根据发送第一脉冲之后的采样时钟的周期数来确定第一脉冲的到达时间。 这可以针对第二脉冲重复，并且确定第一和第二脉冲的平均到达次数以获得平均的估计到达时间。 目标和接收机之间的距离可以通过将平均的估计到达时间乘以传输脉冲的传播速度来确定。 还公开了一种用于测量距离的装置。

公开(公告)号：US20070169555A1

公开(公告)日：2007-07-26

申请号：US11560651

申请日：2006-11-16

Applicant: Peng Gao ,  Xiaobing Sun ,  Kanzo Okada

Inventor： Peng Gao ,  Xiaobing Sun ,  Kanzo Okada

IPC: H04R1/02

CPC classification number: H04R1/403 ,  H04R3/12 ,  H04R2217/03 ,  H04R2499/15

Abstract: An audio-visual reproduction apparatus is provided. The audio-visual reproduction apparatus includes a visual display screen and an ultrasonic transducer array having two or more transducer elements arranged around the periphery of the screen for generating an ultrasonic beam modulated with an audio-frequency signal. Non-linear effects in the air demodulate the audio-signal to generate an audio beam propagating perpendicular to the screen. Such an integration of audio and vision may make the user feel as if the sound is being generated from the display screen when he or she is watching it, and also may project the sound towards a target user and seldom, or never, disturb unrelated persons. The ultrasonic transducer array may be made up of independent transducer elements, or may comprise two or more sub-arrays of transducer elements.

Abstract translation: 提供了一种视听再生装置。 该视听再现装置包括可视显示屏和超声换能器阵列，该阵列具有布置在屏幕周围的两个或更多个换能器元件，用于产生用音频信号调制的超声波束。 空中的非线性效应解调了音频信号以产生垂直于屏幕传播的音频波束。 这样的音频和视觉的集成可能使得用户感觉到当他或她正在观看声音时从显示屏产生声音，并且还可以将声音投射到目标用户，并且很少或从未干扰不相关的人 。 超声换能器阵列可以由独立的换能器元件组成，或者可以包括两个或更多个换能器元件的子阵列。