音声信号の復調方法及び装置
    1.
    发明专利
    音声信号の復調方法及び装置 有权
    用于解调语音信号的方法和装置

    公开(公告)号:JP2014220781A

    公开(公告)日:2014-11-20

    申请号:JP2013120396

    申请日:2013-06-07

    Abstract: 【課題】復調された音声信号からのノイズまたはアーテファクトを軽減または排除する。【解決手段】FM復調器304は、信号を復調し、音声信号306を生成する。搬送波信号エネルギー検出器308は、受信されたIF信号302のエネルギーレベルを監視する。比較器312は、表示310と閾値314とを比較する。比較器は、制御信号316を出力する。搬送波エネルギーの表示310は、瞬間的な受信搬送波エネルギーレベルの測定値である。音声信号306および制御信号は、デジタル信号プロセッサ(DSP)318へと提供される。DSPは、サンプルアンドホールド要素320を実行するプロセスを含む。減衰が検出された場合、音声信号を保持またはフィルタリングする。【選択図】図3

    Abstract translation: 要解决的问题:减少或消除来自解调的语音信号的噪声或伪影。解调:FM解调器304解调信号并产生语音信号306.载波信号能量检测器308监视接收的IF的能级 信号302.比较器312将显示器310与阈值314进行比较。比较器输出控制信号316.载波能量的显示器310是瞬时接收载波能级的测量值。 语音信号306和控制信号被提供给数字信号处理器(DSP)318.DSP包括执行采样和保持元件320的处理。当检测到衰减时,话音信号被保持或滤波。

    振幅変調信号を復調するための方法および装置
    3.
    发明专利
    振幅変調信号を復調するための方法および装置 有权
    用于解调放大调制信号的方法和装置

    公开(公告)号:JP2014217041A

    公开(公告)日:2014-11-17

    申请号:JP2013117288

    申请日:2013-06-03

    CPC classification number: H03D1/2245

    Abstract: 【課題】振幅変調(AM)信号を復調する方法。【解決手段】方法は、アナログ領域内においてAM信号を受信することと、上記AM信号のデジタル表現を生成することと、デジタル領域において、上記デジタル表現と、1つ以上のデジタル生成された局部発振器信号とを乗算して、第1の信号Iおよび第2の信号Qを生成することであって、上記第2の信号Qは、上記第1の信号から位相が実質的に90度だけずれていることと、上記第1の信号および上記第2の信号を処理して、上記受信されたAM信号を復調する。【選択図】図2

    Abstract translation: 要解决的问题:提供解调幅度调制(AM)信号的方法。解决方案:该方法包括在模拟域中接收AM信号并产生AM信号的数字表示; 并且还包括在数字域中:将数字表示与一个或多个数字产生的本地振荡器信号相乘以产生与第一信号基本上相差90度的第一信号I和第二信号Q; 以及处理所述第一信号和所述第二信号以解调所接收的AM信号。

    Descriptor base stream processor for image processing, and method related to the same
    5.
    发明专利
    Descriptor base stream processor for image processing, and method related to the same 有权
    用于图像处理的描述性基本流程处理器,以及与其相关的方法

    公开(公告)号:JP2014142939A

    公开(公告)日:2014-08-07

    申请号:JP2014011404

    申请日:2014-01-24

    CPC classification number: H04N9/04 G06T1/20 H04N5/23229

    Abstract: PROBLEM TO BE SOLVED: To provide a descriptor base stream processor for image processing, and a method related to the same.SOLUTION: A method includes defining a kernel pattern related to an image frame, and processing the image frame by using the defined kernel pattern, and further includes creating a kernel switch look-up table based on the defined kernel pattern. A stream controller is capable of operation to instruct the execution of kernel to the image frame according to the defined kernel pattern and the kernel switch look-up table.

    Abstract translation: 要解决的问题:提供用于图像处理的描述符基本流处理器及其相关方法。解决方案:一种方法,包括定义与图像帧相关的内核模式,并使用定义的内核模式处理图像帧 ,还包括基于定义的内核模式创建内核切换查找表。 流控制器能够根据定义的内核模式和内核切换查找表来操作指令内核对图像帧的执行。

    Under-sampling digital pre-distortion architecture
    6.
    发明专利
    Under-sampling digital pre-distortion architecture 审中-公开
    不采取数字化的预设架构

    公开(公告)号:JP2014179981A

    公开(公告)日:2014-09-25

    申请号:JP2014041322

    申请日:2014-03-04

    Inventor: DON CHEN

    Abstract: PROBLEM TO BE SOLVED: To provide an improved power amplifier that compensates for nonlinearity efficiently with low power consumption.SOLUTION: A amplifier system may include a pre-distorter for receiving an input signal to generate a pre-distortion signal, a first converter for receiving the pre-distortion signal to generate a pre-amplified signal, a power amplifier for receiving the pre-amplified signal to generate an output signal on the basis of the pre-amplified signal and the input signal, and a second converter for sampling the output signal to generate a feedback signal. The power amplifier may produce a distortion signal at a first frequency, the second converter may sample the output signal by the use of a timing signal with a second frequency lower than the first frequency to generate the feedback signal, and the pre-distorter may, on the basis of the feedback signal, pre-distort the pre-distortion signal to reduce the distortion signal at the first frequency.

    Abstract translation: 要解决的问题:提供一种改进的功率放大器,其以低功耗有效地补偿非线性。解决方案:放大器系统可以包括用于接收输入信号以产生预失真信号的预失真器,用于接收的第一转换器 用于产生预放大信号的预失真信号,用于接收预放大信号以根据预放大信号和输入信号产生输出信号的功率放大器,以及用于对输出进行采样的第二转换器 信号以产生反馈信号。 功率放大器可以产生第一频率的失真信号,第二转换器可以通过使用具有低于第一频率的第二频率的定时信号对输出信号进行采样,以产生反馈信号, 在反馈信号的基础上,预失真信号,以减小第一频率的失真信号。

    Radio frequency transmitter noise cancellation
    7.
    发明专利
    Radio frequency transmitter noise cancellation 有权
    无线电频率发射机噪声消除

    公开(公告)号:JP2014179986A

    公开(公告)日:2014-09-25

    申请号:JP2014048493

    申请日:2014-03-12

    CPC classification number: H04B1/0475 H04B1/525

    Abstract: PROBLEM TO BE SOLVED: To provide a low-power and reduced-size RF noise cancellation circuit that is able to cost efficiently minimize transmitter noise leakage in received signals without having its adaptation rate reduced by external blockers.SOLUTION: Transmitter noise cancellation may be applied on a channel by channel basis to active channels of an incoming radio frequency signal received at a receiver. A noise cancellation filter may be provided for each active channel in a predetermined signal band. Applying noise cancellation on a per active channel basis instead of to the entire receive band may substantially reduce the filtering requirement and number of filter coefficients or taps to save power and reduce manufacturing costs. Channelized transmitter noise cancellers, multi transmitter-receiver cross coupling cancellers, and hybrid full signal band and channelized transmitter noise cancellers are also provided.

    Abstract translation: 要解决的问题:提供低功率和小尺寸的RF噪声消除电路,其能够有效地最小化接收信号中的发射机噪声泄漏,而不会由于外部阻塞器降低其适配速率。解决方案:可以应用发射机噪声消除 在逐个信道的基础上接收在接收器处接收的输入射频信号的有效信道。 可以在预定信号频带中为每个有源信道提供噪声消除滤波器。 在每个活动通道基础上而不是整个接收频带上应用噪声消除可以大大降低滤波器要求和滤波器系数或抽头的数量以节省功率并降低制造成本。 还提供信道化发射机噪声消除器,多发射机 - 接收机交叉耦合消除器,以及混合全信号频带和信道化发射机噪声消除器。

    All digital transmitter noise correction
    8.
    发明专利
    All digital transmitter noise correction 有权
    所有数字发射机噪声校正

    公开(公告)号:JP2014176097A

    公开(公告)日:2014-09-22

    申请号:JP2014047252

    申请日:2014-03-11

    Abstract: PROBLEM TO BE SOLVED: To provide a circuit and a method in which an all digital model of nonlinear transmitter signal distortion in signals received at a receiver of a transmitter-receiver may be used to estimate distortion, and the estimated distortion may then be cancelled from the received signals to improve signal quality of the received signal.SOLUTION: A digital nonlinear model may be part of an estimation circuit that estimates nonlinear distortion terms by applying a formula or transformation to a digitized version of transmission signals at a transmitter of the transmitter-receiver. A mixer may be used to shift a frequency of the estimated nonlinear terms away from a transmitter frequency so that the nonlinear terms can later be subtracted from the incoming signal received at the receiver at a receiver frequency. A circuit and a method are provided.

    Abstract translation: 要解决的问题:提供一种电路和方法,其中可以使用在发射机 - 接收机的接收机处接收的信号中的非线性发射机信号失真的全数字模型来估计失真,并且然后可以从 接收信号以改善接收信号的信号质量。解决方案:数字非线性模型可以是估计电路的一部分,该估计电路通过在发射机的发射机处对传输信号的数字化版本应用公式或变换来估计非线性失真项, 接收器。 可以使用混频器将估计的非线性项的频率偏离发射机频率,使得可以在接收机频率处从接收机接收的输入信号中减去非线性项。 提供电路和方法。

    Baseband digital pre-distortion architecture
    9.
    发明专利
    Baseband digital pre-distortion architecture 审中-公开
    基带数字预失真架构

    公开(公告)号:JP2014179987A

    公开(公告)日:2014-09-25

    申请号:JP2014049840

    申请日:2014-03-13

    Inventor: DON CHEN

    CPC classification number: H04L27/367 H03F1/3247

    Abstract: PROBLEM TO BE SOLVED: To provide an improved power amplifier that compensates for baseband nonlinearity.SOLUTION: An amplifier may include a pre-distorter for receiving an input signal to generate a pre-distortion signal, a first converter for receiving the pre-distortion signal to generate a pre-amplified signal, a power amplifier for receiving the pre-amplified signal to generate an output signal on the basis of the pre-amplified signal and the input signal, and a second converter for sampling the output signal to generate a feedback signal. The pre-distorter may separately and independently generate a pre-distortion signal component for an in-phase input signal and a pre-distortion signal component for a quadrature input signal.

    Abstract translation: 要解决的问题:提供一种改进的功率放大器,其补偿基带非线性。解决方案:放大器可以包括用于接收输入信号以产生预失真信号的预失真器,用于接收预失真信号的第一转换器 以产生预放大的信号;功率放大器,用于接收预放大的信号,以根据预放大的信号和输入信号产生输出信号;以及第二转换器,用于对输出信号进行采样以产生反馈 信号。 预失真器可以单独和独立地产生用于正相输入信号的同相输入信号和预失真信号分量的预失真信号分量。

    Spectrum dispersion mems self-testing system and method
    10.
    发明专利
    Spectrum dispersion mems self-testing system and method 有权
    光谱分散MEMS自检系统及方法

    公开(公告)号:JP2014174175A

    公开(公告)日:2014-09-22

    申请号:JP2014044971

    申请日:2014-03-07

    CPC classification number: B81B7/02 B81B7/008 B81C99/005 G01N35/00712

    Abstract: PROBLEM TO BE SOLVED: To provide a MEMS sensor that has a spectrum dispersion modulation self-testing capability.SOLUTION: A MEMS sensor comprises: a detection circuit 106 that is configured so as to detect a stimulant generated by a microelectromechanical system 102 in a sensor band width of a device output signal; and a self-test circuit 112 that generates a test output signal 130 indicative of a status of the microelectromechanical system 102 by injecting a self-test signal 114 in a signal route of the microelectromechanical system 102 including a MEMS structure having something to do with a generation of the stimulant in the sensor band width of the device output signal. The self-test signal 114 is a spectrum dispersion signal that has a test signal band width overlapped with at least one part of the sensor band width.

    Abstract translation: 要解决的问题:提供具有频谱色散调制自检能力的MEMS传感器。解决方案:MEMS传感器包括:检测电路106,其被配置为检测由传感器中的微机电系统102产生的兴奋剂 设备输出信号的带宽; 以及自检电路112,其通过在微机电系统102的信号路径中注入自检信号114来产生指示微机电系统102的状态的测试输出信号130,该自检信号包括具有与 产生兴奋剂在传感器带宽中的器件输出信号。 自检信号114是具有与传感器带宽的至少一部分重叠的测试信号带宽的频谱色散信号。

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