公开(公告)号：US20120275614A1

公开(公告)日：2012-11-01

申请号：US13450680

申请日：2012-04-19

申请人： Motoaki Kobayashi ,  Shinji Takemoto ,  Kazuyoshi Maeda ,  Mitsuhiro Suzuki ,  Jun Matsumoto

发明人： Motoaki Kobayashi ,  Shinji Takemoto ,  Kazuyoshi Maeda ,  Mitsuhiro Suzuki ,  Jun Matsumoto

IPC分类号： G10K11/16

CPC分类号： H04N5/2251 ,  H04R1/086 ,  H04R3/005 ,  H04R2410/07 ,  H04R2499/15

摘要： A noise cancellation unit includes: a duct connected to an outlet of an electronic apparatus and configured to pass an exhaust flow discharged from the outlet therethrough; a first microphone provided to the duct; a speaker provided to the duct downstream of the first microphone; a second microphone provided to the duct downstream of the speaker; a first windscreen wall configured to prevent the exhaust flow from colliding with the first microphone; a second windscreen wall configured to prevent the exhaust flow from colliding with the second microphone; and a signal processing circuit configured to generate, based on outputs of the first microphone and the second microphone, a sound signal for removing a noise included in the exhaust flow and supply the sound signal to the speaker.

摘要翻译： 噪声消除单元包括：连接到电子设备的出口并被配置为使从出口排出的废气流通过的管道; 提供给导管的第一麦克风; 设置在第一麦克风下游的导管的扬声器; 设置在扬声器下游的导管的第二麦克风; 被配置为防止排气流与第一麦克风碰撞的第一挡风玻璃壁; 配置成防止排气流与第二麦克风碰撞的第二挡风玻璃壁; 以及信号处理电路，被配置为基于所述第一麦克风和所述第二麦克风的输出产生用于去除所述排气流中包括的噪声的声音信号，并将所述声音信号提供给所述扬声器。

公开(公告)号：US08971939B2

公开(公告)日：2015-03-03

申请号：US13160699

申请日：2011-06-15

申请人： Hiroaki Takahashi ,  Mitsuhiro Suzuki

发明人： Hiroaki Takahashi ,  Mitsuhiro Suzuki

IPC分类号： H04B7/00 ,  H04B1/38 ,  H04M1/00 ,  H04B7/26 ,  H04J3/00 ,  H04L27/26 ,  H04L27/34

CPC分类号： H04W72/0446 ,  H04B7/2656 ,  H04J3/00 ,  H04L5/0062 ,  H04L5/0073 ,  H04L27/2602 ,  H04L27/3405

摘要： A transmitting apparatus, a receiving apparatus, and a communication system are provided that allow a reduction in a frame loss due to interference caused by use of the same channel. A transmitting apparatus disposed in a base station includes a GPS receiver for receiving a GPS signal, a timing generator for controlling respective function blocks in accordance with the GPS signal and an inter-base-station control signal so as to precisely synchronize the timing of frame transmission among base stations, the front-end transmission processing unit including for converting transmission information into transmission time slots, a frame generator for generating a frame including a plurality of time slots and one frame guard, and a back-end transmission processing unit for transmitting the generated frame as a radio signal.

摘要翻译： 提供一种发送装置，接收装置和通信系统，其允许由于使用相同信道造成的干扰而减少帧丢失。 设置在基站中的发送装置包括：GPS接收器，用于接收GPS信号;定时发生器，用于根据GPS信号和基站间控制信号控制各个功能块，以便精确地同步帧的定时 基站之间的发送，将发送信息转换为发送时隙的前端发送处理单元，生成包括多个时隙的帧的帧生成器和一个帧保护装置，以及用于发送的后端发送处理单元 生成的帧作为无线电信号。

公开(公告)号：US08873517B2

公开(公告)日：2014-10-28

申请号：US13333582

申请日：2011-12-21

申请人： Kazuyuki Sakoda ,  Kenzo Nishikawa ,  Yuichi Morioka ,  Mitsuhiro Suzuki

发明人： Kazuyuki Sakoda ,  Kenzo Nishikawa ,  Yuichi Morioka ,  Mitsuhiro Suzuki

IPC分类号： H04J3/00 ,  H04L12/801 ,  H04W28/06 ,  H04W84/12 ,  H04W48/02 ,  H04W74/08

CPC分类号： H04W48/02 ,  H04L47/10 ,  H04W28/06 ,  H04W74/08 ,  H04W84/12 ,  H04W84/18

摘要： The present invention eliminates a transmission-waiting operation which is unnecessary while accommodating a prioritized traffic. Although a communication station enters a transmission-disallowed state in response to detection of a signal addressed to another station in accordance with medium access control based on CSMA, if the communication station receives a frame transmitted with priority to a local station during the transmission waiting, it cancels the transmission-disallowed state, sends back a frame responding the frame transmitted with priority and effectively operates a transmission prioritized period. The communication station starts a search procedure to perform a processing of evading duplication of the transmission prioritized periods if it judges a possibility of a problem occurring in a time zone in which reception with priority is possible.

摘要翻译： 本发明消除了在容纳优先业务量时不必要的传输等待操作。 虽然响应于根据基于CSMA的媒体访问控制寻址到另一站的信号的检测，通信站进入传输不允许状态，但是如果通信站在传输等待期间接收到优先发送到本地站的帧， 它取消传输不允许状态，发送一个响应优先发送的帧的帧，并有效地操作传输优先级周期。 如果通信站判断在优先级可以接收的时间段内发生问题的可能性，则开始搜索过程来执行回避发送优先级周期的重复的处理。

公开(公告)号：US07983321B2

公开(公告)日：2011-07-19

申请号：US12134747

申请日：2008-06-06

申请人： Mitsuhiro Suzuki

发明人： Mitsuhiro Suzuki

IPC分类号： H04B1/00 ,  H03D1/00

CPC分类号： H04B1/7183 ,  H04B1/692 ,  H04B1/707 ,  H04B1/719

摘要： There is provided a communication apparatus compliant with ultra wide band communication systems for improving resistance to interfering waves in combination with DS-SS (direct sequence spread spectrum). There is provided a training section based on short code spread with the same pattern repeated for each symbol length. Actual communication itself is preceded by coherent channel measurement of a transmission channel by using the training section to specify a length of the short code to be a measurement period and using N cycles of a carrier as a time resolution for measurement. A chip timing is controlled at the time resolution for measurement. At all points given by a time resolution for a measurement period, a measured value is obtained by using the short code to despread A/D-converted values from an input signal based on the chip timing.

摘要翻译： 提供了一种符合超宽带通信系统的通信设备，用于与DS-SS（直接序列扩频）结合来提高对干扰波的抗性。 提供了基于短代码扩展的训练部分，对于每个符号长度重复相同的模式。 通过使用训练部分将短码的长度指定为测量周期并且使用载波的N个周期作为测量的时间分辨率，在实际通信本身之前进行传输信道的相干信道测量。 在测量的时间分辨率下控制芯片定时。 在由测量周期的时间分辨率给出的所有点处，通过使用短码来基于芯片定时从输入信号中解码A / D转换值来获得测量值。

公开(公告)号：US20110091050A1

公开(公告)日：2011-04-21

申请号：US12901083

申请日：2010-10-08

申请人： Saki HANAI ,  Mitsuhiro Suzuki

发明人： Saki HANAI ,  Mitsuhiro Suzuki

IPC分类号： H04B15/00

CPC分类号： H04R3/02

摘要： A sound processing apparatus includes a power spectrum operation unit obtaining a power spectrum of an audio signal, an envelope component removal unit removing an envelope component of the power spectrum and generating a signal characteristic that represents a peakness of the power spectrum, a filter characteristic calculation unit calculating a filter characteristic suppressing the signal characteristic by using the signal characteristic, and a suppress filter filtering the audio signal by using the filter characteristic.

摘要翻译： 声音处理装置包括获得音频信号的功率谱的功率谱运算单元，去除功率谱的包络分量并生成表示功率谱的峰值的信号特性的包络分量去除单元，滤波特性计算 单元通过使用信号特性来计算抑制信号特性的滤波器特性，以及通过使用滤波器特性对音频信号进行滤波的抑制滤波器。

公开(公告)号：US07864872B2

公开(公告)日：2011-01-04

申请号：US10528473

申请日：2004-08-12

申请人： Mitsuhiro Suzuki

发明人： Mitsuhiro Suzuki

IPC分类号： H04K1/10

CPC分类号： H04L27/2602 ,  H04B1/7163 ,  H04L27/261

摘要： Disclosed is a method that preferably performs transmission processing to a time sequence signal of a known pattern as the pre-amble and an OFDM transmitted signal.In data communications, the general practice defines the pre-amble and detects the peaks of the mutual correlation to thereby detect synchronization. The pre-amble here is defined by the binary value in most cases for simplification of a correlation detecting device. In this case, the spectrum becomes irregular with sharp peaks and dips, which deteriorates the correlation characteristic. The method of the invention forcibly adjusts the spectrum amplitude of the pre-amble pattern on the transmitting side while retaining the phase information thereof, and thereby the method improves the spectrum and correlation characteristics while securing simplification of a correlation detecting device on the receiving side.

摘要翻译： 公开了一种优选对已知模式的时序信号作为前同步码和OFDM发送信号进行发送处理的方法。 在数据通信中，一般做法定义了前同步码并检测相互关联的峰值，从而检测同步。 这里的前导码在大多数情况下由二进制值定义，用于简化相关检测装置。 在这种情况下，光谱变得不规则，具有尖峰和倾斜，这降低了相关特性。 本发明的方法在保持其相位信息的同时强制地调整发送侧的前置码模式的频谱幅度，从而在确保接收侧的相关检测装置的简化的同时，提高了频谱和相关特性。

公开(公告)号：US20100035559A1

公开(公告)日：2010-02-11

申请号：US12441721

申请日：2007-09-21

申请人： Masahiro Nakano ,  Kazuhiro Sato ,  Mitsuhiro Suzuki ,  Taketoshi Shimizu

发明人： Masahiro Nakano ,  Kazuhiro Sato ,  Mitsuhiro Suzuki ,  Taketoshi Shimizu

IPC分类号： H04B7/00

CPC分类号： G08C17/00 ,  G08C2201/50

摘要： Remote control data is securely transmitted to a device under control. A remote control device transmits an acknowledge request for A ch to the device under control (S21). When the device under control has assigned A ch as the reception channel, acknowledge ACK is received. A ch is assigned as the transmission channel (S23), and a command frame is transmitted through A ch (S24). When acknowledge ACK has not been received, an acknowledge request for B ch is transmitted to the device under control (S25). When the device under control has assigned B ch as the reception channel, acknowledge ACK is received. B ch is assigned as the transmission channel (S27), and a command frame is transmitted through B ch (S28). The remote control device can transmits a command through a channel through which the device under control can receive the command, so that secure remote control can be accomplished.

摘要翻译： 遥控数据被安全传输到受控制的设备。 遥控装置向控制装置（S21）发送对A ch的确认请求。 当控制器件分配了A ch作为接收通道时，接收到确认ACK。 将ch指定为发送信道（S23），通过A ch发送命令帧（S24）。 当未接收到确认ACK时，对控制的设备（S25）发送对Bch的确认请求。 当被控制的设备分配了BCH作为接收通道时，接收到确认ACK。 B ch被指定为传输信道（S27），并且通过B ch（S28）发送命令帧。 遥控装置可以通过控制装置可以接收命令的通道发送命令，从而可以实现安全的遥控。

公开(公告)号：US07623561B2

公开(公告)日：2009-11-24

申请号：US10909556

申请日：2004-08-03

申请人： Mitsuhiro Suzuki

发明人： Mitsuhiro Suzuki

IPC分类号： H04B1/00

CPC分类号： H04B1/7163 ,  H04B1/713 ,  H04B1/71637 ,  H04L25/022 ,  H04L27/2647

摘要： Channel characteristics need to be estimated in a wireless communication system which performs frequency hopping. A transmission side aligns phase values of carriers of frequencies used for hopping to known values at a transmission start time and transmits a transmission signal for each hopping obtained by converting frequencies. A reception side aligns phase values of carriers of frequencies used for each hopping at a reception start time and performs frequency conversion for respective reception signals. A phase rotation component contained in the reception signal for each hopping is common to all hoppings. Consequently, the phase rotation component can be included in channel characteristics to be measured for estimation.

摘要翻译： 需要在执行跳频的无线通信系统中估计信道特性。 发送侧在发送开始时间将用于跳频的频率的载波的相位值对准已知值，并且发送用于通过转换频率获得的每个跳频的发送信号。 接收侧将接收开始时刻的每次跳频使用的频率的载波的相位值对齐，并对各个接收信号进行频率变换。 对于每个跳跃，包含在接收信号中的相位旋转分量对于所有hopp都是共同的。 因此，可以将相位旋转分量包括在待测量的通道特性中用于估计。

公开(公告)号：US07593471B2

公开(公告)日：2009-09-22

申请号：US10575082

申请日：2004-10-08

申请人： Mitsuhiro Suzuki ,  Sachio Iida

发明人： Mitsuhiro Suzuki ,  Sachio Iida

IPC分类号： H04L27/28

CPC分类号： H04B1/7136 ,  H04B1/71635 ,  H04B2001/71365 ,  H04L27/18

摘要： A reference frequency of 4224 MHz is divided into ½ to obtain a sampling frequency of 2112 MHz, and further the frequency division into ½ is sequentially performed and the values of three bits outputted by the ½, ¼ and ⅛ frequency division are decoded in response to frequency selection. From one set of nonlinear 2-bit DA converters which output amplitudes {−1.7, −0.7, 0.7, 1.7} using these decoded values as input, complex amplitudes corresponding to eight phases in a complex plane are outputted, so that complex sine waves are generated. Using these complex sine waves, the frequency switching is performed. Center frequencies of respective bands can be obtained without a phase error or an amplitude error.

摘要翻译： 4224MHz的参考频率被分成1/2以获得2112MHz的采样频率，并且进一步分频成1/2，并且由1/2，1/4和1/8分频输出的三位的值被解码为 响应频率选择。 从使用这些解码值作为输入输出幅度{-1.7，-0.7,0.7,1.7}的一组非线性2位DA转换器，输出对应于复平面中的八个相位的复振幅，使得复数正弦波为 生成。 使用这些复杂的正弦波，进行频率切换。 可以在没有相位误差或振幅误差的情况下获得各个频带的中心频率。

公开(公告)号：US07532674B2

公开(公告)日：2009-05-12

申请号：US11066276

申请日：2005-02-28

申请人： Mitsuhiro Suzuki

发明人： Mitsuhiro Suzuki

IPC分类号： H04K1/10

CPC分类号： H04L27/2602 ,  H04B1/7163 ,  H04L27/261

摘要： Disclosed is a method that preferably performs transmission processing to a time sequence signal of a known pattern as the pre-amble and an OFDM transmitted signal.In data communications, the general practice defines the pre-amble and detects the peaks of the mutual correlation to thereby detect synchronization. The pre-amble here is defined by the binary value in most cases for simplification of a correlation detecting device. In this case, the spectrum becomes irregular with sharp peaks and dips, which deteriorates the correlation characteristic. The method of the invention forcibly adjusts the spectrum amplitude of the pre-amble pattern on the transmitting side while retaining the phase information thereof, and thereby the method improves the spectrum and correlation characteristics while securing simplification of a correlation detecting device on the receiving side.

摘要翻译： 公开了一种优选对已知模式的时序信号作为前同步码和OFDM发送信号进行发送处理的方法。 在数据通信中，一般做法定义了前同步码并检测相互关联的峰值，从而检测同步。 这里的前导码在大多数情况下由二进制值定义，用于简化相关检测装置。 在这种情况下，光谱变得不规则，具有尖峰和倾斜，这降低了相关特性。 本发明的方法在保持其相位信息的同时强制地调整发送侧的前置码模式的频谱幅度，从而在确保接收侧的相关检测装置的简化的同时，提高了频谱和相关特性。