公开(公告)号：US20090214054A1

公开(公告)日：2009-08-27

申请号：US11817868

申请日：2006-03-07

Applicant: Kensaku Fujii ,  Satoshi Miyata

Inventor： Kensaku Fujii ,  Satoshi Miyata

IPC: H04B15/00

CPC classification number: H04R3/04 ,  G10L21/0208 ,  G10L2021/02165 ,  H04R3/005

Abstract: A noise eliminating apparatus includes a first microphone, a second microphone and a signal processing unit, the signal processing unit includes a linear prediction filter and a noise resynthesis filter, the linear prediction filter receives an output signal of the first microphone, predicts the output signal of the first microphone by linear prediction and generates a prediction signal, and the noise resynthesis filter is an adaptive filter which receives, as a main input signal, a first difference signal obtained by subtracting one of the output signal of the first microphone and the prediction signal from the other, receives, as an error signal, a second difference signal obtained by subtracting one of an output signal of the second microphone and an output signal of the noise resynthesis filter itself from the other, and updates a filter coefficient so that the error signal is minimized.

Abstract translation: 噪声消除装置包括第一麦克风，第二麦克风和信号处理单元，信号处理单元包括线性预测滤波器和噪声再合成滤波器，线性预测滤波器接收第一麦克风的输出信号，预测输出信号 通过线性预测生成第一麦克风，并生成预测信号，噪声再合成滤波器是自适应滤波器，其接收通过减去第一麦克风的输出信号和预测中的一个获得的第一差分信号作为主输入信号， 从另一方面接收通过从另一方减去第二麦克风的输出信号和噪声再合成滤波器本身的输出信号中的一个而获得的第二差分信号作为误差信号，并更新滤波器系数，使得 误差信号最小化。

公开(公告)号：US06256581B1

公开(公告)日：2001-07-03

申请号：US09362391

申请日：1999-07-28

Applicant: Kensaku Fujii ,  Kazuhiro Sugiyama

Inventor： Kensaku Fujii ,  Kazuhiro Sugiyama

IPC: G01C2126

CPC classification number: G01C21/3629 ,  G01C21/3644

Abstract: A navigation method for guiding a user from a present position to a destination position includes inputting the present position and the destination position, inputting data from a geographic database and a road network database and selecting a route from the present position to the destination position, determining particularity of route guide map according to the area and the density of data representing the selected route, selecting necessary data for guiding a user according to the particularity and generating the route guide map, inputting data corresponding to the area from a spatial object network database and generating route guide sentence with respect to the route guide map, and manipulating information in the route guide map and route guide sentence and outputting the manipulated information.

Abstract translation: 用于将用户从当前位置引导到目的地位置的导航方法包括输入当前位置和目的地位置，从地理数据库和道路网络数据库输入数据并选择从当前位置到目的地位置的路线，确定 根据表示所选择的路线的数据的面积和密度的路线指南图的特殊性，根据特定性选择用于引导用户的必要数据并生成路线指南图，从空间对象网络数据库输入与该区域对应的数据，以及 生成相对于路线指南图的路线指导句，并且操作路线指南图和路线指南语句中的信息，并输出被操纵的信息。

公开(公告)号：US08584721B2

公开(公告)日：2013-11-19

申请号：US10532424

申请日：2003-11-20

Applicant: Kensaku Fujii ,  Takehiko Murata

Inventor： Kensaku Fujii ,  Takehiko Murata

IPC: B60C11/117 ,  B60C11/24

CPC classification number: B60C11/24

Abstract: A tire having a rotation timing indication hole of the invention has a rotation timing indication hole comprising a multi-step hole provided in a tire tread, and respective steps of the hole have different contours from each other. Since the contour of the hole changes when the tire is worn, the rotation timing of the tire can be recognized.

Abstract translation: 具有本发明的旋转定时指示孔的轮胎具有旋转定时指示孔，该旋转定时指示孔包括设置在轮胎胎面中的多台阶孔，并且孔的各个台阶彼此具有不同的轮廓。 由于当轮胎磨损时孔的轮廓变化，因此可以识别轮胎的旋转正时。

公开(公告)号：US20050269003A1

公开(公告)日：2005-12-08

申请号：US10532424

申请日：2003-11-20

Applicant: Kensaku Fujii ,  Takehiko Murata

Inventor： Kensaku Fujii ,  Takehiko Murata

IPC: B60C11/24 ,  B60C11/117 ,  G01M17/02

CPC classification number: B60C11/24

Abstract: A tire having a rotation timing indication hole of the invention has a rotation timing indication hole comprising a multi-step hole provided in a tire tread, and respective steps of the hole have different contours from each other. Since the contour of the hole changes when the tire is worn, the rotation timing of the tire can be recognized.

Abstract translation: 具有本发明的旋转定时指示孔的轮胎具有旋转定时指示孔，该旋转定时指示孔包括设置在轮胎胎面中的多台阶孔，并且孔的各个台阶彼此具有不同的轮廓。 由于当轮胎磨损时孔的轮廓变化，因此可以识别轮胎的旋转正时。

公开(公告)号：US5940499A

公开(公告)日：1999-08-17

申请号：US778194

申请日：1997-01-02

Applicant: Kensaku Fujii ,  Juro Ohga ,  Hiroyuki Masuda

Inventor： Kensaku Fujii ,  Juro Ohga ,  Hiroyuki Masuda

IPC: H04B3/20 ,  H04M1/60 ,  H04M9/08 ,  H04M9/10 ,  H04R3/02 ,  H04M1/00

CPC classification number: H04M1/6016 ,  H04M9/08 ,  H04M9/10

Abstract: A voice switch in a hands-free communications system performs selective attenuation with respect to respective voice signals being transmitted and received in respective transmitting and receiving paths, the transmitted voice signal having been converted from an audible voice by a microphone connected to the transmitting path and the received voice signal having been converted by a loudspeaker to an audible voice output. A detector selectively detects a currently transmitted voice signal at a normal level, a currently received voice signal at a normal level, and drops in the respective levels thereof to nil levels and provides corresponding outputs to a controller. When one of the transmitted and received voice signals is of a normal level and the detector newly detects the other thereof at a normal level, the controller selectively attenuates that other, newly-detected normal level voice signal. Further, when a current voice signal of a normal level drops to a nil level and, within a selected time interval, resumes its normal level and also the other voice signal is newly detected at a normal level, the controller preferentially attenuates the newly detected voice signal such that the resumed normal level voice signal is preferentially processed.

Abstract translation: 免提通信系统中的语音切换对相应的发送和接收路径中发送和接收的各个语音信号执行选择性衰减，所发送的语音信号已被连接到发送路径的麦克风的可听话音转换， 所接收的语音信号已被扬声器转换成声音输出。 检测器选择性地检测正常电平处的当前传输的语音信号，正常电平的当前接收到的语音信号，并将其相应电平下降到零电平，并向控制器提供相应的输出。 当发送和接收的语音信号中的一个是正常电平，并且检测器以正常水平新检测到另一个时，控制器选择性地衰减另一个新检测的正常电平语音信号。 此外，当正常电平的当前语音信号下降到零电平，并且在所选择的时间间隔内恢复其正常电平，并且在正常电平下重新检测另一语音信号时，控制器优先衰减新检测到的声音 信号，使得恢复正常电平话音信号被优先处理。

公开(公告)号：US5638311A

公开(公告)日：1997-06-10

申请号：US538446

申请日：1995-10-03

Applicant: Kensaku Fujii ,  Juro Ohga

Inventor： Kensaku Fujii ,  Juro Ohga

IPC: G10K11/178 ,  H03H21/00 ,  H04B1/10 ,  H04B3/23 ,  H04M1/60 ,  H04M9/08 ,  G06F17/10

CPC classification number: G10K11/1784 ,  H03H21/0012 ,  H04M9/082 ,  G10K2210/108 ,  G10K2210/3012 ,  G10K2210/30232 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3053 ,  G10K2210/503 ,  G10K2210/504 ,  G10K2210/505 ,  H03H2021/007 ,  H03H2021/0074 ,  H03H2021/0089

Abstract: An estimation apparatus predicts filter coefficients for an adaptive filter, the response of which emulates the signal transmission characteristics of a known signal. The response thereto is sent to a signal transmission system of unknown characteristics, enabling execution of calculations without invalidating coefficient updating, even when there is a limit on the word length for processings. To achieve this, a sum of products calculation unit calculates the sum of products of the residual difference in response and the signal which is sent to the signal transmission system. A sum of squares calculating unit calculates the sum of the squares of the signal sent to the signal transmission system over a prescribed period of time. An updating amount calculation unit calculates the filter coefficient updating amounts from the ratio of the results from the sum of the products calculating unit to the results of the sum of the squares calculating unit. Filter coefficients are updated using the coefficient updating amounts calculated by the updating amount calculation unit.

Abstract translation: 估计装置预测自适应滤波器的滤波器系数，其自适应滤波器的响应模拟已知信号的信号传输特性。 其响应被发送到具有未知特性的信号传输系统，使得能够执行计算而不使系数更新无效，即使对于处理的字长限制也是如此。 为了实现这一点，产品计算单元的总和计算出响应中的残差差和发送到信号传输系统的信号的乘积之和。 平方和计算单元计算在规定时间内发送到信号传输系统的信号的平方和。 更新量计算单元根据从乘积计算单元的总和到平方计算单元的总和的结果的比率来计算滤波器系数更新量。 使用由更新量计算单元计算的系数更新量来更新滤波器系数。

公开(公告)号：US5479502A

公开(公告)日：1995-12-26

申请号：US243518

申请日：1994-05-16

Applicant: Juro Ohga ,  Hiroyuki Masuda ,  Kensaku Fujii ,  Yoshihiro Sakai

Inventor： Juro Ohga ,  Hiroyuki Masuda ,  Kensaku Fujii ,  Yoshihiro Sakai

IPC: H04M9/08

CPC classification number: H04M9/082

Abstract: A speaking apparatus having a handfree conversation function, provided with an echo canceler which can cancel the echo caused by direct acoustic coupling between a speaker and a microphone positioned in a system having a casing, a ground surface and a speech switching circuit. In the apparatus, the amount of insertion attenuation of the transmitted and received signal is set with an upper limit of the amount of attenuation sufficient for cancelling the echo caused by the indirect acoustic coupling determined by the location where the speaking apparatus is used. In addition, the echo canceler and the speech switching circuit share optimum functions to obtain an excellent speaking quality apparatus with an inexpensive and small sized processing circuit.

Abstract translation: 一种具有免提通话功能的讲话装置，其具有回波消除器，该回波消除器可消除位于具有壳体，地面和语音切换电路的系统中的扬声器和麦克风之间的直接声耦合引起的回波。 在该装置中，发送和接收信号的插入衰减量被设置为足以消除由使用说话装置的位置确定的间接声耦合引起的回波的衰减量的上限。 此外，回波消除器和语音切换电路共享最佳功能，以获得具有廉价且小型处理电路的优秀的说话质量设备。

公开(公告)号：US5237562A

公开(公告)日：1993-08-17

申请号：US667663

申请日：1991-03-11

Applicant: Kensaku Fujii ,  Juro Ohga ,  Hiroyuki Masuda ,  Yoshihiro Sakai

Inventor： Kensaku Fujii ,  Juro Ohga ,  Hiroyuki Masuda ,  Yoshihiro Sakai

IPC: G01N15/00 ,  G01H3/00 ,  H04B3/23 ,  H04M9/08

CPC classification number: H04B3/234 ,  H04M9/082

Abstract: A method for detecting a transition of an echo path used for an estimation of the transfer function of a system by using an adaptive filter, from an echo caused by a signal transmitted through an input terminal of the system at which the response of the transmitted signal is received. The method includes the steps of calculating the amount of the whole or the first delay portion of an impulse response of the system, calculating the amount of the remaining delay portion of the impulse response of the system, calculating the ratio between the amount of the whole or the first delay portion of the impulse response and the amount of the remaining delay portion of the impulse response, and deciding an occurrence of a transition of the characteristics of the system based on the calculated ratio. The transition of the characteristics of the system is discriminated from a hindering signal produced in the system in the decision making process.

Abstract translation: 一种用于通过使用自适应滤波器来检测用于估计系统的传递函数的回波路径的转换的方法，该回波路径是由通过系统的输入端发送的信号引起的， 被收到。 该方法包括以下步骤：计算系统的脉冲响应的整个或第一延迟部分的量，计算系统的脉冲响应的剩余延迟部分的量，计算整个数量之间的比率 或脉冲响应的第一延迟部分和脉冲响应的剩余延迟部分的量，并且基于所计算的比率来确定系统的特性的转变的发生。 系统特性的转变与决策过程中系统产生的阻碍信号有所区别。

公开(公告)号：US06683960B1

公开(公告)日：2004-01-27

申请号：US09641660

申请日：2000-08-18

Applicant: Kensaku Fujii ,  Juro Ohga

Inventor： Kensaku Fujii ,  Juro Ohga

IPC: A61F1106

CPC classification number: H03H21/0012 ,  G10K11/178 ,  G10K2210/112 ,  G10K2210/30232 ,  H03H2021/0089 ,  H03H2021/0092

Abstract: An active noise control apparatus for transmitting, from a loud speaker, a secondary noise synthesized so as to have the same amplitude as and the opposite phase to a primary noise and for canceling the noise by acoustically overlapping the secondary noise. An overall system filter for simulating a characteristic of an overall system leading to an error detecting microphone from a noise detecting microphone is provided for the first and the second overall system filter. A second and a first noise control filter are connected to the first and the second overall system filter in cascade to form a noise control filter. A coefficient of an estimating noise transfer system filter, obtained when the difference between the differential output of both obtained when a white noise is applied to the circuit of cascade connections and the response difference of the first and the second overall system filter from a differential overall system filter becomes a minimum, is made the coefficient of the noise control filter.

Abstract translation: 一种有源噪声控制装置，用于从扬声器发送合成的第二噪声，以便与主要噪声具有相同的振幅和相位相位，并通过声学重叠二次噪声来消除噪声。 为第一和第二整个系统滤波器提供了用于模拟导致来自噪声检测麦克风的误差检测麦克风的整个系统的特性的整体系统滤波器。 第二和第一噪声控制滤波器级联连接到第一和第二整个系统滤波器，以形成噪声控制滤波器。 当将白噪声施加到级联连接的电路时获得的差分输出与第一和第二整个系统滤波器的响应差与差分整体的差异输出时获得的估计噪声传递系统滤波器的系数 系统滤波器成为最小值，是噪声控制滤波器的系数。

公开(公告)号：US5602926A

公开(公告)日：1997-02-11

申请号：US115872

申请日：1993-09-03

Applicant: Tadashi Ohashi ,  Kensaku Fujii ,  Juro Ohga

Inventor： Tadashi Ohashi ,  Kensaku Fujii ,  Juro Ohga

IPC: F01N1/00 ,  F01N1/06 ,  G10K11/16 ,  G10K11/178 ,  H03H17/00 ,  H03H17/02 ,  H03H21/00 ,  H04B3/04

CPC classification number: G10K11/1784 ,  G10K2210/3018 ,  G10K2210/30232 ,  G10K2210/3045 ,  G10K2210/3049 ,  G10K2210/506

Abstract: A method and apparatus of determining the transfer characteristic in an active-noise-control system, which involves generating white noise at an end of a one-dimensional sound field that is defined by a linear ventilating system in which sound travels essentially parallel to the extended direction of the system; equalizing the transfer characteristic of the one-dimensional sound field and generating cancelling sound, according to an inverse of the transfer characteristic, to cancel the white noise and prevent noise being output from the other end of the one-dimensional sound field; continuously preventing the noise output and measuring the characteristic data of the one-dimensional sound field at, at least, one measuring point in the one-dimensional sound field; and calculating the transfer function of the one-dimensional sound field in the noise-output-prevented state, according to the characteristic data of the sound field.

Abstract translation: 一种确定有源噪声控制系统中的传输特性的方法和装置，其涉及在由线性通风系统限定的一维声场的末端产生白噪声，其中声音基本上平行于延伸的 系统方向; 根据传输特性的相反均衡一维声场的传递特性并产生消除声音，以消除白噪声并防止噪声从一维声场的另一端输出; 连续地防止噪声输出并测量一维声场中至少一个测量点的一维声场的特征数据; 以及根据声场的特征数据计算噪声输出防止状态下的一维声场的传递函数。