公开(公告)号：US08521920B2

公开(公告)日：2013-08-27

申请号：US12844071

申请日：2010-07-27

申请人： Takumi Nito ,  Masashi Takada ,  Tetsuya Yamada

发明人： Takumi Nito ,  Masashi Takada ,  Tetsuya Yamada

IPC分类号： G06F13/28

CPC分类号： G06F12/1081 ,  G06F12/145

摘要： The data processor with access protection which has higher reliability during data transfer control according to a transfer condition set by a CPU. The data processor has: a CPU; a memory management section operable to control data transfer by the CPU; and a transfer controller operable to control the data transfer. The transfer controller holds identification information which the memory management section uses for access protection. When producing an address for transfer according to the setting of the CPU, the transfer controller starts data transfer on the condition that the identification information corresponding to the address for transfer matches the identification information of the CPU at the setting of a transfer condition, etc.

摘要翻译： 具有访问保护的数据处理器，根据CPU设置的传送条件，在数据传输控制期间具有更高的可靠性。 数据处理器有：一个CPU; 存储器管理部分，用于控制CPU的数据传输; 以及可操作以控制数据传送的传送控制器。 传输控制器保存存储器管理部分用于访问保护的识别信息。 当根据CPU的设置生成用于传送的地址时，转移控制器在转移条件设置等的情况下，在与传送地址相对应的识别信息与CPU的识别信息相匹配的条件下开始数据传送。

公开(公告)号：US20100251017A1

公开(公告)日：2010-09-30

申请号：US12721208

申请日：2010-03-10

申请人： Tetsuya Yamada ,  Makoto Ishikawa ,  Masashi Takada ,  Hiromichi Yamada

发明人： Tetsuya Yamada ,  Makoto Ishikawa ,  Masashi Takada ,  Hiromichi Yamada

IPC分类号： G06F11/14 ,  G06F12/08

CPC分类号： G06F11/1048 ,  G06F11/0724 ,  G06F11/0772 ,  G06F12/0811

摘要： The data processor having CPUs each capable of accessing memories enables the processing of a memory error according to the processing mode of the data processor. The CPUs have a memory, and each include a first storing unit capable of storing CPU-identifying information which enables identification of CPU having accessed the memory. At the time of occurrence of a soft error owing to access to the memory, the CPU, having the memory, stores the CPU-identifying information for identifying the CPU having accessed the corresponding memory in the first storing unit, and notifies the interrupt controller of occurrence of a soft error of the memory. After having received an interruption of the memory soft error from the interrupt controller, the CPU uses information stored in the first storing unit to identify the CPU having made the access, and performs the error processing.

摘要翻译： 具有能够访问存储器的CPU的数据处理器能够根据数据处理器的处理模式来处理存储器错误。 CPU具有存储器，并且每个都包括能够存储CPU识别信息的第一存储单元，其能够识别已访问存储器的CPU。 在由于访问存储器而发生软错误时，具有存储器的CPU存储用于识别在第一存储单元中访问相应存储器的CPU的CPU识别信息，并将中断控制器通知 发生内存的软错误。 在从中断控制器接收到存储器软错误的中断之后，CPU使用存储在第一存储单元中的信息来识别已经进行访问的CPU，并且执行错误处理。

公开(公告)号：US20130089147A1

公开(公告)日：2013-04-11

申请号：US13703108

申请日：2011-05-20

申请人： Kazutaka Izumi ,  Eiko Sone ,  Yu Ito ,  Masashi Takada

发明人： Kazutaka Izumi ,  Eiko Sone ,  Yu Ito ,  Masashi Takada

IPC分类号： H04N7/32

CPC分类号： H04N7/32 ,  H04N21/4307

摘要： A synchronization signal generator of a decoder adds a predetermined value to a time value, and outputs a synchronization signal when the added time value coincides with a reproducing time value in a frame.

摘要翻译： 解码器的同步信号发生器将预定值与时间值相加，并且当相加时间值与帧中的再现时间值一致时，输出同步信号。

公开(公告)号：US08090093B2

公开(公告)日：2012-01-03

申请号：US11988005

申请日：2006-12-20

申请人： Hiromi Aoyagi ,  Masashi Takada

发明人： Hiromi Aoyagi ,  Masashi Takada

IPC分类号： H04M9/08 ,  H04B1/38 ,  A61F11/06

CPC分类号： H04M9/082 ,  H04B3/23

摘要： An echo canceller which can respond to a sudden change in echo characteristics in real time and does not require an alteration outside the echo canceller, includes a smoothed sending-speech signal calculation means for calculating a smoothed sending-speech signal from the sending-speech signal, the smoothed sending-speech signal being obtained by smoothing the sending-speech signal; a smoothed receiving-speech signal calculation means for calculating a smoothed receiving-speech signal from the receiving-speech signal, the smoothed receiving-speech signal being obtained by smoothing the receiving-speech signal; a delay time information generation means for obtaining delay time information reflecting delay characteristics of an echo path in accordance with a correlation between the smoothed sending-speech signal and the smoothed receiving-speech signal; and an update information generation means for obtaining update information indicating execution or suspension of updating of the tap coefficients of the adaptive filter, in accordance with the sending-speech signal, the receiving-speech signal, and the delay time information.

摘要翻译： 可以实时响应回波特性的突然变化并且不需要在回波消除器之外的改变的回波消除器包括平滑的发送语音信号计算装置，用于从发送语音信号计算平滑的发送语音信号 通过平滑发送语音信号获得平滑的发送语音信号; 平滑化的接收语音信号计算装置，用于从接收语音信号计算平滑的接收语音信号，平滑的接收语音信号是通过平滑接收语音信号获得的; 延迟时间信息产生装置，用于根据平滑的发送语音信号和平滑的接收语音信号之间的相关性获得反映回波路径的延迟特性的延迟时间信息; 以及更新信息产生装置，用于根据发送语音信号，接收语音信号和延迟时间信息获得指示执行或停止更新自适应滤波器的抽头系数的更新信息。

公开(公告)号：US07792255B2

公开(公告)日：2010-09-07

申请号：US11165436

申请日：2005-06-24

申请人： Masashi Takada ,  Hiromi Aoyagi ,  Kazuyoshi Akie

发明人： Masashi Takada ,  Hiromi Aoyagi ,  Kazuyoshi Akie

IPC分类号： H04M11/00

CPC分类号： H04M7/0069 ,  H04M1/2535 ,  H04M1/60 ,  H04M3/40 ,  H04M7/006

摘要： Voice communications apparatus intervenes between a telephone set and a broad-band transmission path that has a communication band broader than a voice band limited by the transmitter and receiver characteristics of the telephone set. The voice communications apparatus includes a transmitter frequency characteristic corrector circuit for correcting the frequency characteristic of a signal input from the telephone set, and a receiver frequency characteristic corrector circuit for correcting the frequency characteristic of a signal to be input to the telephone set.

公开(公告)号：US20100184488A1

公开(公告)日：2010-07-22

申请号：US12654639

申请日：2009-12-28

申请人： Masashi Takada

发明人： Masashi Takada

IPC分类号： H04M1/00

CPC分类号： H04M9/082 ,  H04R3/00

摘要： In a sound signal adjuster for use in telephone circuitry including a microphone capturing sound to produce a first sound signal and a loudspeaker, a second sound signal representative of a sound in a vicinity of the loudspeaker is obtained, and transitions are detected in the first and second sound signals to determine whether or not the sound in the vicinity of the loudspeaker is blocked. When the blocking is detected, a difference is calculated between a first frequency characteristic detected in response to the sound captured by the loudspeaker being determined as blocked and a second frequency characteristic detected in response to the sound captured by the loudspeaker not being determined as blocked. The difference calculated is used for suppressing a noise component included in the first sound signal.

摘要翻译： 在用于包括麦克风捕获声音以产生第一声音信号和扬声器的电话电路中的声音信号调节器中，获得代表扬声器附近的声音的第二声音信号，并且在第一和第 第二声音信号以确定扬声器附近的声音是否被阻挡。 当检测到阻塞时，在响应于被确定为阻塞的扬声器捕获的声音检测到的第一频率特性和响应于由扬声器捕获的声音未被确定为阻塞而检测到的第二频率特性之间计算差。 计算出的差值用于抑制包含在第一声音信号中的噪声分量。

公开(公告)号：US20100086122A1

公开(公告)日：2010-04-08

申请号：US12461285

申请日：2009-08-06

申请人： Masashi Takada

发明人： Masashi Takada

IPC分类号： H04M9/08 ,  H04B3/20

CPC分类号： H04M9/082

摘要： An echo canceler uses an adaptive filter to remove an echo of a far-end input signal from a near-end input signal. Filter coefficients are calculated and updated while the far-end signal is active. While the far-end signal is silent, substitute filter coefficients are similarly calculated to be swapped in as initial values for the filter coefficients when the far-end signal changes from silent to active. The substitute filter coefficients are generated from a simulated far-end signal and a simulated near-end signal obtained by combining corresponding samples in different intervals of the far-end and near-end input signals. To facilitate convergence of the substitute filter coefficients, use of the simulated far-end and near-end signals is disabled when the corresponding samples cancel out.

摘要翻译： 回波消除器使用自适应滤波器从远端输入信号中去除远端输入信号的回波。 在远端信号有效时，滤波系数被计算和更新。 当远端信号无声时，当远端信号从静音变为有效时，替代滤波器系数被类似地计算为交换为滤波器系数的初始值。 替代滤波器系数是从模拟的远端信号和通过组合远端和近端输入信号的不同间隔中的对应样本获得的模拟近端信号产生的。 为了促进替代滤波器系数的收敛，当相应的样本消除时，禁用使用模拟的远端和近端信号。

公开(公告)号：US20090257579A1

公开(公告)日：2009-10-15

申请号：US12085222

申请日：2006-11-24

申请人： Masashi Takada

发明人： Masashi Takada

IPC分类号： H04M9/08

CPC分类号： H04B3/23 ,  H04M1/2535

摘要： An echo canceller is capable of reducing echo feeling in a conversation even if a tone signal is input. The echo canceller of this invention judges whether a far-end input signal is a calling control tone signal or not, and if that is the case, resets a coefficient of an adaptive filter. An echo canceller of another aspect judges whether a far-end input signal is a predetermined kind of a tone signal or not, and stops the update of the coefficient of the adaptive filter if the result is affirmative and an amount of echo cancellation is not larger than a threshold value. Further, when the tone signal ends, the echo canceller compares amounts of echo cancellation before and after the end of the tone signal, in accordance with a result of the comparison, restart the update of the coefficient of the adaptive filter after resetting the coefficient of the adaptive filter, or restarts the update of the coefficient of the adaptive filter without resetting the coefficient of the adaptive filter. Moreover, notch filters may be provided to eliminate a tone signal frequency component at input stages of the adaptive filter and the adder for echo cancellation.

摘要翻译： 回声消除器即使输入了音调信号也能够减少对话中的回声感。 本发明的回波消除器判断远端输入信号是否是呼叫控制音调信号，如果是这样，则复位自适应滤波器的系数。 另一方面的回波消除器判断远端输入信号是否是预定种类的音调信号，如果结果是肯定的并且回波消除量不大，则停止更新自适应滤波器的系数 超过阈值。 此外，当音调信号结束时，回声消除器根据比较结果来比较音调信号结束之前和之后的回波消除量，重新启动自适应滤波器的系数的更新， 自适应滤波器，或者重新启动自适应滤波器的系数的更新，而不重置自适应滤波器的系数。 此外，可以提供陷波滤波器以消除在自适应滤波器的输入级和用于回波消除的加法器中的音调信号频率分量。

公开(公告)号：US07539613B2

公开(公告)日：2009-05-26

申请号：US10545435

申请日：2004-02-10

申请人： Masashi Takada

发明人： Masashi Takada

IPC分类号： G10L19/00 ,  G10L21/00 ,  H03G3/00

CPC分类号： G10L21/038

摘要： A band recovering device recovers frequency components lying in a frequency band lost due to band-limitation of a sound signal. The device includes a peak-limiting amplifier for amplifying an input narrow-band signal while preventing the resulting amplified signal from exceeding a maximum amplitude. A peak-limitation detector detects the level of the amplified signal output. An amplification controller increases the amplification factor and/or the amount of amplification of the peak-limiting amplifier in accordance with the level of the amplified signal. A band recovering circuit generates, based on the amplified signal output from the peak-limiting amplifier and input narrow-band signal, a band-recovered signal including the frequency components lying in the missing band.

摘要翻译： 频带恢复装置恢复由于声音信号的频带限制而丢失的频带中的频率分量。 该装置包括用于放大输入窄带信号同时防止所得到的放大信号超过最大幅度的峰值限制放大器。 峰值限制检测器检测放大信号输出的电平。 放大控制器根据放大信号的电平增加限幅放大器的放大系数和/或放大量。 频带恢复电路基于从峰值限幅放大器和输入窄带信号输出的放大信号产生包括位于丢失频带中的频率分量的带恢复信号。

公开(公告)号：US20150117456A1

公开(公告)日：2015-04-30

申请号：US14383829

申请日：2012-03-09

申请人： Masashi Takada ,  Yasuyuki Kudo ,  Takeshi Kato

发明人： Masashi Takada ,  Yasuyuki Kudo ,  Takeshi Kato

IPC分类号： H04L12/12 ,  H04L12/741

CPC分类号： H04L12/12 ,  H04L45/74 ,  H04W52/0219 ,  Y02D70/00

摘要： An information processing system according to the present invention includes a plurality of information processing apparatuses connected by a multihop network, and each of the information processing apparatuses includes a first communication unit configured to transmit and receive a first packet including information about a destination address and a second communication unit configured to communicate at a frequency higher than that of the first communication unit and transmit and receive a second packet including a payload, and in each of the information processing apparatuses, when the first communication unit receives the first packet, the second communication unit is woken up, so that efficient data transfer can be achieved while the power consumption is saved.

摘要翻译： 根据本发明的信息处理系统包括通过多跳网络连接的多个信息处理设备，并且每个信息处理设备包括：第一通信单元，被配置为发送和接收第一分组，其包括关于目的地地址和 第二通信单元，被配置为以比第一通信单元更高的频率通信，并发送和接收包括有效载荷的第二分组，并且在每个信息处理设备中，当第一通信单元接收到第一分组时，第二通信 单元被唤醒，从而在节省功耗的同时实现高效的数据传输。