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    • 41. 发明授权
    • Echo cancelling device, communication device, and echo cancelling method having the error signal generating circuit
    • 回波消除装置,通信装置和具有误差信号发生电路的回波消除方法
    • US08325910B2
    • 2012-12-04
    • US12461329
    • 2009-08-07
    • Hiroyuki Kobayashi
    • Hiroyuki Kobayashi
    • H04M9/08
    • H04M9/082
    • Provided is an echo canceller capable of realizing an excellent echo cancellation performance even in a double talk state. An echo canceller (10) comprises: an adaptive filter (20); a subtractor (30); and an error signal generating circuit (40). The adaptive filter (20) synthesizes a spurious echo signal (y′(k)) from a receiving signal (x(k)) before being delivered from a speaker (3). The subtractor (30) subtracts the spurious echo signal (y′(k)) from an input signal (yin(k)) received by a microphone (2) so as to generate an echo cancellation signal (p(k)) The error signal generating circuit (40) generates an error signal (s(k−1)) by removing a spurious voice signal (r(k−1)) corresponding to a voice signal (v(k)) of a talker from the echo cancellation signal (p(k)). The adaptive filter (20) updates a characteristic of the adaptive filter (20) so that an amplitude of the error signal (s(k−1)) becomes smaller.
    • 提供了即使在双方通话状态下也能够实现优异的回波消除性能的回波消除器。 回声消除器(10)包括:自适应滤波器(20); 减法器(30); 和误差信号发生电路(40)。 在从扬声器(3)传送之前,自适应滤波器(20)从接收信号(x(k))合成寄生回波信号(y'(k))。 减法器(30)从由麦克风(2)接收的输入信号(yin(k))中减去寄生回波信号(y'(k)),以产生回波消除信号(p(k))。误差 信号发生电路(40)通过从回声消除中去除与讲话者的语音信号(v(k))相对应的杂散语音信号(r(k-1))来生成误差信号(s(k-1) 信号(p(k))。 自适应滤波器(20)更新自适应滤波器(20)的特性,使得误差信号(s(k-1))的振幅变小。
    • 46. 发明授权
    • Local oscillator and phase adjusting method for the same
    • 本地振荡器和相位调整方法相同
    • US08237511B2
    • 2012-08-07
    • US12885767
    • 2010-09-20
    • Hiroyuki Kobayashi
    • Hiroyuki Kobayashi
    • H03L7/085H03L7/089H03L7/099
    • H03L7/085H03L2207/50
    • According to one embodiment, a local oscillator includes: an adder that adds an oscillator integer phase and an oscillator fraction phase and outputs the addition value as first phase information; a delayer that outputs an addition output of a frequency command word at one clock before and second phase information as estimated oscillator phase data; a correcting unit that outputs an addition of compensation information to the first phase information as the second phase information when |the first phase information−the estimated oscillator phase data|>|the first phase information+the compensation information−the estimated oscillator phase data| is satisfied and otherwise outputs the first phase information as the second phase information.
    • 根据一个实施例,本地振荡器包括:加法器,其将振荡器整数相位和振荡器分数相位相加,并将加法值作为第一相位信息输出; 延迟器,其在一个时钟前输出频率指令字的相加输出和作为估计振荡器相位数据的第二相位信息; 校正单元,当第一相位信息估计振荡器相位数据| |第一相位信息+补偿信息 - 估计的振荡器相位数据|时,向第一相位信息输出补偿信息的相加作为第二相位信息; 并且否则输出第一相位信息作为第二相位信息。
    • 47. 发明申请
    • LOCAL OSCILLATOR
    • 本地振荡器
    • US20120062289A1
    • 2012-03-15
    • US13230041
    • 2011-09-12
    • Yoshinori SuzukiHiroyuki KobayashiJun Deguchi
    • Yoshinori SuzukiHiroyuki KobayashiJun Deguchi
    • H03L7/08
    • H03L7/18H03L2207/50
    • A local oscillator of an embodiment includes a digitally-controlled oscillator, a phase data generator, a subtractor, a loop filter, a multiplier, and a coefficient calculator. The digitally-controlled oscillator variably controls an oscillation frequency of an oscillation signal by using a first oscillator control value. The oscillation frequency is equal to a product of the first oscillator control value multiplied by an amount of change in the oscillation frequency per unit first oscillator control value. Set frequency data is calculated by dividing a set frequency by a reference frequency of a reference signal. The multiplier outputs the first oscillator control value obtained by multiplying a normalized control value from the loop filter by a first coefficient. The coefficient calculator divides, by the set frequency data, the first oscillator control value which makes the oscillation frequency roughly equal to the set frequency, and sets the quotient as a new first coefficient in the multiplier.
    • 实施例的本地振荡器包括数字控制振荡器,相位数据发生器,减法器,环路滤波器,乘法器和系数计算器。 数字控制振荡器通过使用第一振荡器控制值来可变地控制振荡信号的振荡频率。 振荡频率等于第一振荡器控制值乘以每单位第一振荡器控制值的振荡频率的变化量的乘积。 通过将设定频率除以参考信号的参考频率来计算设定频率数据。 乘法器输出通过将来自环路滤波器的归一化控制值乘以第一系数而获得的第一振荡器控制值。 系数计算器通过设定频率数据将使振荡频率大致等于设定频率的第一振荡器控制值分频,并将乘数设置为乘法器中的新的第一系数。
    • 48. 发明申请
    • SPEAKER DEVICE
    • 扬声器设备
    • US20120045073A1
    • 2012-02-23
    • US13272794
    • 2011-10-13
    • Hiroyuki KobayashiToshihiro HikichiMinoru HorigomeYasuhisa Abe
    • Hiroyuki KobayashiToshihiro HikichiMinoru HorigomeYasuhisa Abe
    • H04R9/06H04R9/02
    • H04R9/10H04R2499/13
    • A flat speaker device capable of emitting loud reproduced sound with a relatively simple configuration is provided. The speaker device includes a diaphragm, a frame supporting the diaphragm vibratably in the vibration direction, a magnetic circuit disposed in the frame, and a driving member for driving the diaphragm. The driving member includes a voice coil movably disposed in a magnetic gap of the magnetic circuit, a driving part formed movably in a direction different from the vibration direction of the diaphragm, and an angle conversion and transmission part, one end of which is angle-variably joined to the driving part and another end of which is angle-variably joined to the diaphragm. The angle conversion and transmission part has rigidity and is obliquely disposed with respect to each of the vibration direction of the diaphragm and the moving direction of the driving part.
    • 提供能够以相对简单的结构发出大声再现声音的平板扬声器装置。 扬声器装置包括隔膜,支撑隔膜在振动方向上振动的框架,设置在框架中的磁路和用于驱动隔膜的驱动构件。 驱动构件包括可移动地设置在磁路的磁隙中的音圈,沿与振动板的振动方向不同的方向可移动地形成的驱动部,以及角度变换传递部, 可变地接合到驱动部分,并且其另一端可角度地连接到隔膜。 角度变换传递部具有刚性,并相对于振动板的振动方向和驱动部的移动方向倾斜配置。
    • 49. 发明授权
    • Semiconductor memory and memory system
    • 半导体存储器和存储器系统
    • US08107313B2
    • 2012-01-31
    • US12238900
    • 2008-09-26
    • Hiroyuki Kobayashi
    • Hiroyuki Kobayashi
    • G06F12/00
    • G11C11/408G11C7/1027G11C8/12G11C11/406G11C11/40618
    • A plurality of cell arrays are assigned different addresses. An access information unit holds access enable information indicating the number of the cell arrays to be simultaneously activated. An array control unit activates at least one of the cell arrays corresponding to the access enable information, in response to an access request, and forcibly activates at least one of the cell arrays not corresponding to the access enable information, in response to a forced access request. Consequently, it is possible to activate the inactivated cell array not corresponding to the access enable information before the supply of the access request. Therefore, even when the number of the cell arrays to be simultaneously activated is small, it is possible to execute access operations without interruption. As a result, it is possible to access the cell arrays with minimum power consumption without lowering access efficiency.
    • 多个单元阵列被分配不同的地址。 访问信息单元保持指示要同时激活的单元阵列的数量的访问使能信息。 响应于访问请求,阵列控制单元激活对应于访问使能信息的单元阵列中的至少一个,并且响应于强制访问而强制地激活不对应于访问允许信息的单元阵列中的至少一个 请求。 因此,可以在提供访问请求之前激活与访问允许信息不相对应的非激活单元阵列。 因此,即使要同时激活的单元阵列的数量少,也可以不中断地执行访问操作。 结果,可以以最小的功耗访问电池阵列而不降低存取效率。