Sigma-delta analog-to-digital converter (ADC) with truncation error cancellation in a multi-bit feedback digital-to-analog converter (DAC)
    1.
    发明授权
    Sigma-delta analog-to-digital converter (ADC) with truncation error cancellation in a multi-bit feedback digital-to-analog converter (DAC) 有权
    在多位反馈数模转换器(DAC)中具有截断误差消除的Σ-Δ模数转换器(ADC)

    公开(公告)号:US06967608B1

    公开(公告)日:2005-11-22

    申请号:US10877015

    申请日:2004-06-25

    IPC分类号: H03M3/00 H03M3/04

    CPC分类号: H03M3/388 H03M3/424 H03M3/454

    摘要: A method for reducing the complexity of a multi-bit DAC in a sigma-delta ADC. The DAC resolution can be made to be less than that of the quantizer by canceling truncation error present in multi-bit DACs. Truncation errors are introduced by differences between the digital output word of the quantizer and the digital input word of the feedback DAC(s). The truncation error(s) can be cancelled and eliminated from the system transfer function. A preferred embodiment comprises expanding all feedback loops in the ADC, adding an adjusted truncation error for each feedback loop to an inner feedback loop, and then calculating a correction term for each adjusted truncation error. The correction term can be calculated by zeroing all signals except for the adjusted truncation error being canceled and then calculating a truncation error transfer function.

    摘要翻译: 降低Σ-ΔADC中多位DAC复杂度的方法。 通过消除存在于多位DAC中的截断误差,可以使DAC分辨率小于量化器的分辨率。 截断误差由量化器的数字输出字与反馈DAC的数字输入字之间的差异引入。 可以从系统传输功能中取消并消除截断错误。 优选实施例包括扩展ADC中的所有反馈回路,将针对每个反馈回路的调整的截断误差加到内部反馈回路中,然后为每个调整的截断误差计算校正项。 校正项可以通过对除去调整的截断误差之外的所有信号归零,然后计算截断误差传递函数来计算。

    METHOD FOR REDUCING DAC RESOLUTION IN MULTI-BIT SIGMA DELTA ANALOG-TO DIGITAL CONVERTER (ADC)
    2.
    发明申请
    METHOD FOR REDUCING DAC RESOLUTION IN MULTI-BIT SIGMA DELTA ANALOG-TO DIGITAL CONVERTER (ADC) 有权
    用于减少多位信号处理模数转换器(ADC)中的DAC分辨率的方法

    公开(公告)号:US20050270201A1

    公开(公告)日:2005-12-08

    申请号:US10860620

    申请日:2004-06-03

    IPC分类号: H03M3/00 H03M3/04

    CPC分类号: H03M3/428 H03M3/454 H03M7/304

    摘要: A method for reducing the resolution of a digital-to-analog converter in a multi-bit sigma-delta ADC is described. With the addition of digital sigma-delta modulators in the feedback path of a sigma-delta ADC, the truncation errors between the digital word output of the multi-bit sigma-delta ADC to the DAC input can be shaped to higher order than that of the quantization error. Thus, the DAC resolution can be reduced and the implementation of DEM for multi-bit DAC can be avoided. A preferred embodiment comprises selecting an outermost feedback loop in a sigma-delta ADC that has not been replaced and replacing it with a circuit with an equivalent transfer function. The circuit can be further enhanced with an additional term if the order of the noise shaping of the circuit is less than the order of the noise shaping of the sigma-delta ADC.

    摘要翻译: 描述了一种用于降低多比特Σ-ΔADC中的数模转换器的分辨率的方法。 通过在Σ-ΔADC的反馈路径中增加数字Σ-Δ调制器,可将多位Σ-ΔADC数字字输出与DAC输入之间的截断误差设定为高于 量化误差。 因此,可以减小DAC分辨率,并且可以避免多位DAC的DEM的实现。 优选实施例包括选择未被替换的Σ-ΔADC中的最外侧反馈回路,并用具有等效传递函数的电路代替它。 如果电路的噪声整形顺序小于Σ-ΔADC的噪声整形的次序,则可以用附加项进一步增强电路。

    Method for reducing DAC resolution in multi-bit sigma delta analog-to digital converter (ADC)
    3.
    发明授权
    Method for reducing DAC resolution in multi-bit sigma delta analog-to digital converter (ADC) 有权
    降低多位Σ-Δ模数转换器(ADC)DAC分辨率的方法

    公开(公告)号:US06980144B1

    公开(公告)日:2005-12-27

    申请号:US10860620

    申请日:2004-06-03

    IPC分类号: H03M3/00 H03M3/04

    CPC分类号: H03M3/428 H03M3/454 H03M7/304

    摘要: A method for reducing the resolution of a digital-to-analog converter in a multi-bit sigma-delta ADC is described. With the addition of digital sigma-delta modulators in the feedback path of a sigma-delta ADC, the truncation errors between the digital word output of the multi-bit sigma-delta ADC to the DAC input can be shaped to higher order than that of the quantization error. Thus, the DAC resolution can be reduced and the implementation of DEM for multi-bit DAC can be avoided. A preferred embodiment comprises selecting an outermost feedback loop in a sigma-delta ADC that has not been replaced and replacing it with a circuit with an equivalent transfer function. The circuit can be further enhanced with an additional term if the order of the noise shaping of the circuit is less than the order of the noise shaping of the sigma-delta ADC.

    摘要翻译: 描述了一种用于降低多比特Σ-ΔADC中的数模转换器的分辨率的方法。 通过在Σ-ΔADC的反馈路径中增加数字Σ-Δ调制器,可将多位Σ-ΔADC数字字输出与DAC输入之间的截断误差设定为高于 量化误差。 因此,可以减小DAC分辨率,并且可以避免多位DAC的DEM的实现。 优选实施例包括选择未被替换的Σ-ΔADC中的最外侧反馈回路,并用具有等效传递函数的电路代替它。 如果电路的噪声整形顺序小于Σ-ΔADC的噪声整形的次序,则可以用附加项进一步增强电路。

    METHOD AND APPARATUS FOR PROVIDING QUANTIZATION OF SYNCHRONIZATION SIGNALS
    4.
    发明申请
    METHOD AND APPARATUS FOR PROVIDING QUANTIZATION OF SYNCHRONIZATION SIGNALS 审中-公开
    用于提供同步信号定量的方法和装置

    公开(公告)号:US20100278198A1

    公开(公告)日:2010-11-04

    申请号:US12433532

    申请日:2009-04-30

    IPC分类号: H04J3/06

    CPC分类号: H04W56/002

    摘要: An apparatus for providing quantization of synchronization signals may include a processor and a memory storing executable instructions. In response to execution of the instructions by the processor, the apparatus may perform at least receiving an indication of a first variable defining a communication parameter with respect to communications associated with a serving node, receiving an indication of a second variable defining the communication parameter with respect to communications associated with a neighbor node, determining variable information based on a difference between the first variable and the second variable, and providing the variable information to the serving node in a quantized message enabling the serving node to modify a value associated with the first variable to reduce the difference between the first variable and the second variable. A corresponding method and computer program product are also provided.

    摘要翻译: 用于提供同步信号的量化的装置可以包括处理器和存储可执行指令的存储器。 响应于处理器执行指令,装置可执行至少接收关于与服务节点相关的通信定义通信参数的第一变量的指示,接收定义通信参数的第二变量的指示, 关于与相邻节点相关联的通信,基于第一变量和第二变量之间的差来确定变量信息,以及在量化消息中向服务节点提供变量信息,使得服务节点能够修改与第一变量和第二变量相关联的值 变量来减少第一个变量和第二个变量之间的差异。 还提供了相应的方法和计算机程序产品。

    Virtual Timing Indication
    5.
    发明申请
    Virtual Timing Indication 有权
    虚拟计时指示

    公开(公告)号:US20120069836A1

    公开(公告)日:2012-03-22

    申请号:US13266953

    申请日:2010-04-29

    IPC分类号: H04W56/00

    CPC分类号: H04J3/0638 H04W56/0015

    摘要: The invention is related to wireless communication systems, methods, devices, computer program, and computer-readable memory medium, and, more specifically, relate to synchronization techniques. The invention relates to a method, including deriving two different timings from a timing source, wherein a first derived timing is a physical timing used for timing at least transmissions from a wireless network access node, and wherein a second derived timing is a virtual timing representing a currently preferred physical timing; receiving an indication of a virtual timing from at least one other network access node; comparing the at least one received virtual timing indication with the derived virtual timing of the network access node, and update the derived virtual timing; and determining achieving synchronization of the derived virtual timing with the at least one received virtual timing, and to adjust the physical timing accordingly.

    摘要翻译: 本发明涉及无线通信系统,方法,设备,计算机程序和计算机可读存储介质,更具体地涉及同步技术。 本发明涉及一种方法,包括从定时源导出两个不同的定时,其中第一导出定时是用于定时至少来自无线网络接入节点的传输的物理定时,并且其中第二导出定时是代表 当前优选的物理时序; 从至少一个其他网络接入节点接收虚拟定时的指示; 将所述至少一个接收到的虚拟定时指示与所述网络接入节点的导出的虚拟定时进行比较,并更新所导出的虚拟定时; 以及确定所导出的虚拟定时与所述至少一个接收到的虚拟定时的同步,并且相应地调整所述物理时序。

    Secondary amino anilinic piperidines as mch1 antagonists and uses thereof
    7.
    发明申请
    Secondary amino anilinic piperidines as mch1 antagonists and uses thereof 失效
    仲氨基苯胺哌啶类作为mch1拮抗剂及其应用

    公开(公告)号:US20050245743A1

    公开(公告)日:2005-11-03

    申请号:US10518675

    申请日:2003-07-03

    CPC分类号: C07D211/26 C07D401/12

    摘要: This invention is directed to compounds which are selective antagonists for melanin concentrating hormone-1 (MCH1) receptors. The invention provides a pharmaceutical composition comprising a therapeutically effective amount of the compound of the invention and a pharmaceutically acceptable carrier. This invention provides a pharmaceutical composition made by combining a therapeutically effective amount of the compound of this invention and a pharmaceutically acceptable carrier. This invention further provides a process for making a pharmaceutical composition comprising combining a therapeutically effective amount of the compounds of the invention and a pharmaceutically acceptable carrier. This invention also provides a method of reducing the body mass of a subject which comprises administering to the subject an amount of a compound of the invention effective to reduce the body mass of the subject. This invention further provides a method of treating a subject suffering from depression and/or anxiety which comprises administering to the subject an amount of a compound of the invention effective to treat the subject=s depression and/or anxiety. This invention further provides a method of treating a subject suffering from a urinary disorder.

    摘要翻译: 本发明涉及作为黑色素浓缩激素-1(MCH1)受体的选择性拮抗剂的化合物。 本发明提供了包含治疗有效量的本发明化合物和药学上可接受的载体的药物组合物。 本发明提供通过将治疗有效量的本发明化合物与药学上可接受的载体组合而成的药物组合物。 本发明还提供了制备药物组合物的方法,其包括将治疗有效量的本发明化合物与药学上可接受的载体组合。 本发明还提供减少受试者体重的方法,其包括向受试者施用一定量的有效减少受试者体重的本发明化合物。 本发明进一步提供了治疗患有抑郁症和/或焦虑症的受试者的方法,其包括向受试者施用有效治疗受试者抑郁症和/或焦虑的量的本发明化合物。 本发明还提供了治疗患有尿失禁的受试者的方法。

    Transmission Timing Interval Adjusting Method and Network Device
    8.
    发明申请
    Transmission Timing Interval Adjusting Method and Network Device 审中-公开
    传输时间间隔调整方法和网络设备

    公开(公告)号:US20120063390A1

    公开(公告)日:2012-03-15

    申请号:US13300034

    申请日:2011-11-18

    申请人: Jiang Yu Fangfu Guo

    发明人: Jiang Yu Fangfu Guo

    IPC分类号: H04W4/00

    CPC分类号: H04W72/0486 H04W28/18

    摘要: A transmission timing interval (TTI) adjusting method is provided according to the embodiments of the present invention. Use condition of a system resource is obtained and it is judged whether a user meets a TTI adjusting requirement according to a current TTI of the user and the obtained use condition of the system resource. TTI adjustment is performed on all or a part of the users meeting the TTI adjusting requirement.

    摘要翻译: 根据本发明的实施例提供传输定时间隔(TTI)调整方法。 获得系统资源的使用条件,并根据用户的当前TTI和所获得的系统资源的使用条件来判断用户是否满足TTI调整要求。 对满足TTI调整要求的所有或部分用户执行TTI调整。

    Pneumatic Device for Cleaning Ventilation Ducts
    9.
    发明申请
    Pneumatic Device for Cleaning Ventilation Ducts 失效
    用于清洁通风管道的气动装置

    公开(公告)号:US20080155780A1

    公开(公告)日:2008-07-03

    申请号:US11817317

    申请日:2005-02-28

    申请人: Jiang Yu

    发明人: Jiang Yu

    IPC分类号: A47L5/00

    摘要: The present invention relates to a pneumatic device for cleaning ventilation ducts which includes a guiding air hammer, a turning conduit, an air-supply pipe and a slewing mechanism for the conduit. The guiding air hammer is of a hollow spherical or hemispherical shape, connected to the turning conduit and provided with cleaning fumarole and guiding fumarole on its rear arc wall. When cleaning the ventilation duct, according to the principle of air motion, the guiding air hammer cleans our of dust lain on the inner walls and in all the corners of the ventilation ducts with the air-supply pipe stretching means retracting and stretching the air-supply pipe, without an operator entering the ventilation duct. The air-supply pope stretching means may be controlled by manual operation or program composition. The design of the invention may be use for cleaning all ventilation ducts with polygonal section. According to the present invention, the pneumatic device for cleaning ventilation ducts has compact structure, has and advantage of automated operation, may clean any corner of the ventilation duct, decreases the number of operators and reduced the labor strength of the operator greatly.

    摘要翻译: 本发明涉及一种用于清洁通风管道的气动装置,其包括引导空气锤,转向导管,供气管和用于管道的回转机构。 引导空气锤具有中空的球形或半球形,连接到转向导管,并在其后弧形壁上设置有清洁喷嘴和引导喷射器。 清洁通风管时,根据空气运动的原理,导风气锤通过供气管拉伸装置对内壁和通风管道的所有角落清洁我们的灰尘, 供应管道,没有操作员进入通风管道。 供气教皇伸展手段可以通过手动操作或程序组合进行控制。 本发明的设计可用于清洁具有多边形截面的所有通风管道。 根据本发明,用于清洁通风管道的气动装置结构紧凑,具有自动化操作的优点,可以清洁通风管道的任何角落,减少操作员人数,大大降低操作人员的劳动强度。

    Interfering stream identification in wireless communication systems
    10.
    发明授权
    Interfering stream identification in wireless communication systems 有权
    干扰无线通信系统中的流识别

    公开(公告)号:US08165235B2

    公开(公告)日:2012-04-24

    申请号:US12286884

    申请日:2008-10-02

    申请人: Yong Teng Jiang Yu

    发明人: Yong Teng Jiang Yu

    IPC分类号: H04K1/10 H04L27/28

    CPC分类号: H04L27/2647 H04L5/0007

    摘要: An exemplary embodiment in accordance with this invention is a method for determining the number of interfering streams. The method includes calculating statistical information based on one or more received OFDM signals. The number of interfering streams is estimated from the statistical information in this method. The OFDM signal(s) are received via a plurality of antennas. Storing the OFDM signal(s) in a square matrix may be included in the method. A covariance matrix of the square matrix can be determined; and a noise subspace and a signal plus interference subspace can be determined based on a SVD of the covariance matrix. The statistical information may be based on the signal plus interference subspace. Apparatus, computer programs and computer-readable media are also disclosed.

    摘要翻译: 根据本发明的示例性实施例是用于确定干扰流的数量的方法。 该方法包括基于一个或多个接收的OFDM信号来计算统计信息。 通过该方法的统计信息估计干扰流的数量。 经由多个天线接收OFDM信号。 将OFDM信号存储在方阵中可以包括在该方法中。 可以确定方阵的协方差矩阵; 并且可以基于协方差矩阵的SVD来确定噪声子空间和信号加干扰子空间。 统计信息可以基于信号加干扰子空间。 还公开了装置,计算机程序和计算机可读介质。