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1. 发明授权

US09020887B2 Managing the status of documents in a distributed storage system 有权
标题翻译：管理分布式存储系统中文档的状态
公开(公告)号：US09020887B2
公开(公告)日：2015-04-28
申请号：US11054325
申请日：2005-02-08
申请人： John-Thomas Calderon Ngo , James Todd Webb
发明人： John-Thomas Calderon Ngo , James Todd Webb
IPC分类号： G06F17/30 , G06F17/22 , G06Q10/10
CPC分类号： G06F17/30011 , G06F17/2288 , G06F17/30165 , G06F17/30174 , G06Q10/10
摘要： Managing the status of documents in a distributed storage system is disclosed. Upon determining that a first version exists and a second version having a predecessor version identifier exists, the predecessor version identifier is used to determine that the second version is related to the first version. Based upon the existence of the related second version, the status of the first version is updated.
摘要翻译：公布了分布式存储系统中文档的状态管理。在确定存在第一版本并且存在具有前导版本标识符的第二版本时，使用前导版本标识符来确定第二版本与第一版本相关。基于相关的第二版本的存在，更新第一版本的状态。

2. 发明授权

US5694474A Adaptive filter for signal processing and method therefor 失效
标题翻译：用于信号处理的自适应滤波器及其方法
公开(公告)号：US5694474A
公开(公告)日：1997-12-02
申请号：US529370
申请日：1995-09-18
申请人： John-Thomas Calderon Ngo , Neal Ashok Bhadkamkar
发明人： John-Thomas Calderon Ngo , Neal Ashok Bhadkamkar
IPC分类号： G10L21/02 , G06K9/00 , H03H21/00 , H04B1/10 , H04B3/20 , H04R3/00 , H04R25/00 , H04S7/00 , H04B15/00
CPC分类号： G06K9/0057 , H03H21/0012 , H04R3/005 , H03H2021/0034 , H04R2201/403 , H04R25/407
摘要： This invention is a component of an adaptive filter signal processor whose purpose is to separate a mixture of signals received by each of a plurality of transducers. This invention accomplishes a key step in that separation: it estimates, from the transducer signals, the relative propagation delays among the transducers for each source. First, it randomly generates a fixed number of sets of delay parameters, called a population. Thereafter, the following events occur at each clock cycle. Each set is processed by an instantaneous-performance calculator, to generate an instantaneous-performance value. The instantaneous performance value of each set is added to a cumulative performance value. The set with the greatest cumulative performance value is transferred to the adaptive filter signal processor. New parameter sets are generated at random. Whenever a parameter set is found whose instantaneous performance value exceeds that of the set in the population with the least instantaneous performance value, it is incorporated into the population. The set with the least cumulative performance value is deleted from the population, and the new parameter set is assigned an initial cumulative performance value that falls short of the greatest cumulative performance value in the population by a fixed amount.
摘要翻译：本发明是一种自适应滤波器信号处理器的组件，其目的是分离由多个换能器中的每一个接收的信号的混合。本发明实现了分离的关键步骤：它从换能器信号估计每个源的换能器之间的相对传播延迟。首先，它随机生成固定数量的延迟参数集，称为总体。此后，在每个时钟周期发生以下事件。每组由瞬时性能计算器处理，以产生瞬时性能值。每个集合的瞬时性能值被添加到累积性能值。具有最大累积性能值的集合被传送到自适应滤波器信号处理器。随机生成新的参数集。每当发现一个参数集，其瞬时性能值超过具有最小瞬时性能值的群体中的集合的参数集合，则它被并入群体中。从群体中删除具有最小累积性能值的集合，并为新参数集分配一个初始累积性能值，该值不超过总体中最大的累积性能值固定的量。

3. 发明授权

US6002776A Directional acoustic signal processor and method therefor 失效
标题翻译：定向声信号处理器及其方法
公开(公告)号：US6002776A
公开(公告)日：1999-12-14
申请号：US531143
申请日：1995-09-18
申请人： Neal Ashok Bhadkamkar , John-Thomas Calderon Ngo
发明人： Neal Ashok Bhadkamkar , John-Thomas Calderon Ngo
IPC分类号： H04S1/00 , G10K11/178 , G10K11/34 , H04B3/20 , H04B15/00 , H04M9/00 , H04M9/08 , H04R3/00 , H04R25/00 , H04R29/00
CPC分类号： H04R3/005 , G10K11/178 , G10K11/341 , H04M9/00 , H04M9/082 , G10K2210/108 , G10K2210/3028 , G10K2210/505 , H04R25/407 , H04R29/006
摘要： Two or more microphones are mounted in an environment that contains an equal or lesser number of distinct sound sources. Acoustic energy from each source, with its attendant echoes and reverberation, impinges on each microphone. Using direction-of-arrival information, a first module attempts to extract the original source signals as if the acoustic environment were anechoic. Any residual crosstalk between the channels, which may be caused by echoes and reverberation, is removed by a second module. The first and second modules may be implemented using existing technology.
摘要翻译：两个或多个麦克风安装在包含相同或更少数量的不同声源的环境中。来自每个声源的声能及其伴随的回声和混响影响每个麦克风。使用到达方向信息，第一模块尝试提取原始信号源，就好像声环境是消声的。可能由回波和混响引起的通道之间的任何残留串扰被第二模块移除。可以使用现有技术来实现第一和第二模块。

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