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    • 22. 发明授权
    • Re-synchronization of independently-clocked audio streams by fading-in with a fractional sample over multiple periods for sample-rate conversion
    • 独立时钟音频流的重新同步,通过在多个时间段内通过分数采样进行采样率转换
    • US06252919B1
    • 2001-06-26
    • US09215507
    • 1998-12-17
    • Tao Lin
    • Tao Lin
    • H04L2300
    • H04L7/0029G10L21/04H04J3/0632H04J3/07H04L7/005H04L25/05
    • A net sample is added or removed from an audio sample stream by fading in or out fractional samples over many sample periods. A sample-rate converter has a FIFO that is written with an input sample by an input clock synchronized to the input audio stream. The samples are read from the FIFO by a derived clock. The derived clock is generated from an output clock using a nominal ratio of Q/P. Read and write counters for the FIFO are compared. When the write counter is ahead of the read counter by exactly a target amount the derived clock is a ratio of Q/P of the output clock. When the write counter is ahead of the read counter by more than the target, the read rate is increased by removing one net sample over many sample periods. When the write counter is ahead of the read counter by less than the target amount, the read rate is decreased by adding one net sample over many sample periods. Samples from a delayed stream from the FIFO are faded in (out) by gradually increasing (decreasing) a weighting of successive fractional samples from the delayed stream and decreasing (increasing) the weighting of successive input-stream samples. Fade-in occurs over many sample periods, such as 256, to reduce audible distortion.
    • 通过在多个采样周期内淡入或淡出分数样本,从音频采样流中添加或删除净采样。 采样率转换器具有通过与输入音频流同步的输入时钟与输入采样一起写入的FIFO。 通过派生时钟从FIFO读取样本。 导出时钟是使用标称比例的Q / P从输出时钟生成的。 比较FIFO的读写计数器。 当写计数器在读计数器之前超过目标量时,导出时钟是输出时钟的Q / P比。 当写计数器超出读取计数器超过目标时,通过在多个采样周期中移除一个净采样来增加读取速率。 当写计数器在读取计数器之前小于目标量时,通过在多个采样周期中添加一个净采样来减小读取速率。 来自FIFO的延迟流的采样通过逐渐增加(减少)来自延迟流的连续分数样本的加权并减小(增加)连续输入流样本的加权,从而衰减(输出)。 淡入淡出发生在许多采样周期,例如256,以减少可听见的失真。
    • 23. 发明授权
    • Re-synchronization of independently-clocked audio streams by dynamically
switching among 3 ratios for sampling-rate-conversion
    • 通过在3个比率之间动态切换采样率转换,重新同步独立时钟的音频流
    • US6057789A
    • 2000-05-02
    • US182348
    • 1998-10-29
    • Tao Lin
    • Tao Lin
    • G06F5/10H03M7/00G06F7/10
    • G06F5/10G06F2205/061
    • A sample-rate converter has a FIFO for buffering input samples. The FIFO is written with an input sample by an input clock synchronized to the input audio stream. The samples are read from the FIFO by a derived clock. The derived clock is generated from an output clock using a nominal ratio of Q/P. Read and write counters for the FIFO are compared. When the write counter is ahead of the read counter by exactly a target amount the derived clock is a ratio of Q/P of the output clock. When the write counter is ahead of the read counter by more than the target, the read rate is increased by accelerating the derived clock to a ratio of (Q+1)/P. When the write counter is ahead of the read counter by less than the target amount, the read rate is decreased by slowing the derived clock to a ratio of (Q-1)/P. An accumulator generates the derived clock by adding Q, Q+1, or Q-1 for each output-clock pulse. Each derived-clock pulse reduces the accumulator by P. The accumulator value is used to select one group of L coefficients in a set of P groups to apply to a convolution FIR filter that generates the output sample from L input samples stored from the FIFO in a shift register.
    • 采样率转换器具有用于缓冲输入采样的FIFO。 FIFO通过与输入音频流同步的输入时钟写入输入采样。 通过派生时钟从FIFO读取样本。 导出时钟是使用标称比例的Q / P从输出时钟生成的。 比较FIFO的读写计数器。 当写计数器在读计数器之前超过目标量时,导出时钟是输出时钟的Q / P比。 当写计数器超过读取计数器超过目标时,通过将导出的时钟加速到(Q + 1)/ P的比率来增加读取速率。 当写计数器在读取计数器之前小于目标量时,通过将导出的时钟减慢到(Q-1)/ P的比率来减小读取速率。 累加器通过为每个输出时钟脉冲添加Q,Q + 1或Q-1来产生导出的时钟。 每个派生时钟脉冲将累加器减少P.累加器值用于选择一组P组中的一组L系数,以应用于从FIFO中存储的L个输入样本生成输出样本的卷积FIR滤波器 一个移位寄存器。
    • 27. 发明授权
    • Tracking assets between organizations in a consortium of organizations
    • 跟踪组织机构之间的资产
    • US08768777B2
    • 2014-07-01
    • US11214992
    • 2005-08-31
    • Tao Lin
    • Tao Lin
    • G06G1/14
    • G06Q10/08G06Q10/087G06Q20/203
    • A system includes a network of auto-id nodes and a processor. Each auto-id node includes index data that defines a hierarchical relationship between the auto-id node and another auto-id node within the network, and the auto-id nodes include a storage for storing status and history data about one or more assets that have been read by the auto-id node. The processor is operable to extract data from the network of auto-id nodes by following index data within the auto-id nodes to query only selected auto-id nodes within the network, and the selected nodes are arranged in a hierarchical network defined by indices of the auto-id nodes.
    • 系统包括自动编号节点网络和处理器。 每个自动身份节点包括索引数据,其定义自动ID节点和网络中的另一自动身份节点之间的分层关系,并且自动身份节点包括用于存储关于一个或多个资产的状态和历史数据的存储, 已被auto-id节点读取。 处理器可操作地通过跟踪自身ID节点内的索引数据从自动ID节点的网络中提取数据,以仅查询网络内所选择的自动身份节点,并将所选择的节点排列在由索引定义的分层网络中 的自动ID节点。
    • 28. 发明授权
    • Linear ion trap analyzer
    • 线性离子阱分析仪
    • US08759759B2
    • 2014-06-24
    • US13079740
    • 2011-04-04
    • Li DingTao LinGongyu JiangHui Mu
    • Li DingTao LinGongyu JiangHui Mu
    • H01J49/00
    • H01J49/423
    • The present invention relates generally to the field of ion storage and analysis, in particular to a linear ion trap mass analyzer comprised by multiple columnar electrodes. High frequency voltages are applied on at least one of the columnar electrodes to form ion confining space, which mainly consists of two-dimensional quadrupole electric radial trapping field, and there is at least one through slot for ion ejection in at least one direction perpendicular to the axis of the ion trap, wherein an AC electric field superposition is applied to invoke dipole excitation. Opposite to the through slot, there is an elongated electrode for field adjusting between two columnar electrodes or inside the slit of one of the columnar electrodes mentioned above. The potential on the elongated electrode for field adjusting is set as the sum of a portion of the high frequency voltage which applied on one adjacent columnar electrode and a DC offset, which can be adjusted freely. Through adjusting the portion of the high frequency potential and DC potential on this electrode, one or more objectives, including field optimization inside the ion trap as well as ion motion characteristics of resonant ejection, can be realized.
    • 本发明一般涉及离子存储和分析领域,特别涉及由多个柱状电极组成的线性离子阱质量分析仪。 在至少一个柱状电极上施加高频电压以形成主要由二维四极电子径向捕获场组成的离子限制空间,并且至少有一个通孔用于在至少一个垂直于 离子阱的轴线,其中施加AC电场叠加以调用偶极子激发。 与通孔相对,有一个用于在两个柱状电极之间进行现场调节的细长电极或者在上述一个柱状电极的狭缝内部。 用于场调整的细长电极上的电位被设置为施加在一个相邻柱状电极上的高频电压的一部分和可以自由调节的DC偏移之和。 通过调节该电极上的高频电位和直流电位的一部分,可以实现一个或多个目标,包括离子阱内的场优化以及共振喷射的离子运动特性。