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98 条记录 (耗时 0.041 秒)

    Portable monitoring system for recognizing wheeze in lung sounds
    92.
    发明申请
    Portable monitoring system for recognizing wheeze in lung sounds 审中-公开
    便携式监测系统，用于识别肺声中的喘鸣

    公开(公告)号：US20060077063A1

    公开(公告)日：2006-04-13

    申请号：US11245061

    申请日：2005-10-07

    申请人： Yi Cheng ,  Chin Ku

    发明人： Yi Cheng ,  Chin Ku

    IPC分类号： G08B23/00

    CPC分类号： A61B7/003 ,  A61B5/0002 ,  A61B7/04

    摘要： A portable monitoring system for recognizing wheeze in lung sounds can detect the occurrence of wheeze from the neck of an asthmatic. The portable monitoring system comprises an acoustic sensor, a signal processor and a wireless signal transmission module, a remote analyzer and an alarm generator. The acoustic sensor is placed next to the windpipe of the asthmatic to collect the acoustic signals when he breathes. The signal processor and remote analyzer analyze the acoustic signals to recognize whether the wheeze, in the form of specified signals, exists. If the wheeze is found, the wireless signal transmission module or the remote analyzer directly instructs the alarm generator to generate an alarm so as to notify someone to give medical treatment to the asthmatic.

    摘要翻译： 用于识别肺音中的喘息的便携式监测系统可以检测来自哮喘颈部的喘息的发生。 便携式监控系统包括声传感器，信号处理器和无线信号传输模块，远程分析仪和报警发生器。 声传感器放置在哮喘气管旁边，以便在呼吸时收集声信号。 信号处理器和远程分析仪分析声信号以识别是否存在指定信号形式的喘鸣。 如果发现喘鸣，无线信号传输模块或远程分析仪直接指示报警发生器产生报警，通知某人对哮喘进行治疗。

    Physical layer transceiver architecture for a home network station connected to a telephone line medium
    93.
    发明授权
    Physical layer transceiver architecture for a home network station connected to a telephone line medium 失效
    连接到电话线介质的家庭网络站的物理层收发器架构

    公开(公告)号：US06771750B1

    公开(公告)日：2004-08-03

    申请号：US09181559

    申请日：1998-10-29

    申请人： Colin Nayler ,  Phil Keller ,  Oikwan Tsang ,  Hung Vo ,  Dennis Lau ,  Yi Cheng ,  Boon-Aik Ang ,  Zhen-Hua Liu

    发明人： Colin Nayler ,  Phil Keller ,  Oikwan Tsang ,  Hung Vo ,  Dennis Lau ,  Yi Cheng ,  Boon-Aik Ang ,  Zhen-Hua Liu

    IPC分类号： H04L2503

    CPC分类号： H04L12/2838 ,  H04L1/20 ,  H04L12/2803 ,  H04L2012/2845

    摘要： A physical layer transceiver of a home network station connected to a telephone medium has an architecture enabling adaptation of detection circuitry based on received network signals to enable reliable recovery of data signals. The physical layer transceiver includes an input amplifier that amplifies network signals according to one of 128 gain settings set by a receiver gain control signal. A signal conditioning circuit includes an envelope detector configured for outputting an envelope of the amplified received signal, and an energy detector configured for outputting an energy signal of the amplified received signals. The envelope signal and the energy signal are supplied to slicer threshold circuits, configured for outputting noise, peak, data event and energy event signals based on noise threshold, peak threshold, data transition threshold, and energy threshold signals, respectively. A digital controller controls the input amplifier gain and the threshold values, and adjusts the gain and threshold values based on the noise event signal and the peak event signal within an access ID (AID) interval. Hence, the receiver can be optimized on a per-packet basis for receiving network signals by adjusting the receiver portion during the AID preamble phase of the data packet. Gain control may also be used by the digital controller on the transmitter portion to selectively adjust the output gain for optimizing transmission to a destination home network station.

    摘要翻译： 连接到电话介质的家庭网络站的物理层收发器具有能够基于接收到的网络信号来适应检测电路的架构，以实现数据信号的可靠恢复。 物理层收发器包括输入放大器，其根据由接收机增益控制信号设置的128个增益设置之一放大网络信号。 信号调理电路包括被配置为输出放大的接收信号的包络的包络检测器，以及被配置为输出放大的接收信号的能量信号的能量检测器。 包络信号和能量信号被提供给限幅器阈值电路，其被配置为分别基于噪声阈值，峰值阈值，数据转换阈值和能量阈值信号输出噪声，峰值，数据事件和能量事件信号。 数字控制器控制输入放大器增益和阈值，并且基于接入ID（AID）间隔内的噪声事件信号和峰值事件信号来调整增益和阈值。 因此，可以在每个分组的基础上优化接收机，以通过在数据分组的AID前导阶段期间调整接收机部分来接收网络信号。 增益控制也可以由发射器部分上的数字控制器使用，以选择性地调整输出增益以优化到目的地家庭网络站的传输。

    CMOS integrated signal detection circuit with high efficiency and performance
    94.
    发明授权
    CMOS integrated signal detection circuit with high efficiency and performance 有权
    CMOS集成信号检测电路具有高效率和高性能

    公开(公告)号：US06246268B1

    公开(公告)日：2001-06-12

    申请号：US09589417

    申请日：2000-06-07

    申请人： Yi Cheng

    发明人： Yi Cheng

    IPC分类号： H03K522

    CPC分类号： H04L25/0292 ,  H03F3/45968 ,  H03K5/125 ,  H04L25/0272

    摘要： In the present invention a semiconductor integrated circuit is described to perform signal detection in a data communication system. The circuit is configured such that the capacitors used in high pass filter and a low pass filter are CMOS capacitors. The capacitors are formed from transistors where the gate is one terminal of the capacitor and the source and drain connected together form the second terminal of the capacitor. The source and drain that are connected together are connected to a voltage bias in the circuit which prevents the capacitors from being in a “floating” circuit configuration. The signal detection is done in one stage where a high pass filter is in the source of the input transistors and a low pass filter is in the drain of the input transistors. A comparator connects to the drain circuitry of the input transistors which supplies and offset voltage to the comparator. The input signal must be of a specific frequency to be conducted through the filters and of specific amplitude to overcome the offset. The simplicity requires far few devices than previous signal detectors and facilitates the ability to handle high frequency signals.

    摘要翻译： 在本发明中，描述了在数据通信系统中执行信号检测的半导体集成电路。 该电路被配置为使得在高通滤波器和低通滤波器中使用的电容器是CMOS电容器。 电容器由晶体管形成，其中栅极是电容器的一个端子，源极和漏极连接在一起形成电容器的第二端子。 连接在一起的源极和漏极连接到电路中的电压偏置，防止电容器处于“浮动”电路配置。 信号检测在一个阶段完成，其中高通滤波器位于输入晶体管的源极中，低通滤波器位于输入晶体管的漏极中。 比较器连接到输入晶体管的漏极电路，其向比较器提供和补偿电压。 输入信号必须具有通过滤波器传导的特定频率，并且具有特定的幅度以克服偏移。 简单性要求比以前的信号检测器少得多的设备，并且有助于处理高频信号的能力。

    Method of compensating for boil-off alcohol in a flexible fueled vehicle with a PCV solenoid
    95.
    发明授权
    Method of compensating for boil-off alcohol in a flexible fueled vehicle with a PCV solenoid 失效
    用PCV螺线管补偿柔性燃料车辆中的蒸发酒精的方法

    公开(公告)号：US6023965A

    公开(公告)日：2000-02-15

    申请号：US959817

    申请日：1997-10-29

    申请人： Jerry Kennie ,  Yi Cheng ,  Robert J. Nankee, II

    发明人： Jerry Kennie ,  Yi Cheng ,  Robert J. Nankee, II

    IPC分类号： F02D19/08 ,  F02M25/08 ,  G01M15/00

    CPC分类号： F02M25/06 ,  F02D19/084 ,  F02D19/0628 ,  Y02T10/121 ,  Y02T10/36

    摘要： The present invention provides a method of compensating for a boil-off condition in a flexible fuel compensation control system for a flexible fueled vehicle with a PCV solenoid. The methodology determines both the presence and extent of boil-off corruption and handles closed loop controls normally as if no boil-off corruption exists. The methodology also determines the amount of boil-off corruption being introduced through the PCV system and updates the flexible fueled vehicle fueling during a blend change between ethanol and gasoline. Additionally, the methodology determines when boil-off corruption is no longer influencing closed loop fuel control.

    摘要翻译： 本发明提供一种补偿具有PCV螺线管的柔性燃料车辆的柔性燃料补偿控制系统中的蒸发状态的方法。 该方法确定了沸腾腐败的存在和程度，并通常处理闭环控制，就好像不存在煮沸腐败一样。 该方法还确定通过PCV系统引入的锅炉腐蚀量，并在乙醇和汽油之间的混合变化期间更新柔性燃料车辆加油。 此外，该方法确定何时开始腐败不再影响闭环燃料控制。

    Apparatus and method for decoding differential multi-level data with adaptive threshold control
    96.
    发明授权
    Apparatus and method for decoding differential multi-level data with adaptive threshold control 失效
    用自适应阈值控制解码差分多级数据的装置和方法

    公开(公告)号：US5969646A

    公开(公告)日：1999-10-19

    申请号：US47439

    申请日：1998-03-25

    申请人： Yi Cheng ,  Zhenhua Liu ,  Kris Martin Holt

    发明人： Yi Cheng ,  Zhenhua Liu ,  Kris Martin Holt

    IPC分类号： H03K5/08 ,  H04L25/06 ,  H04L25/08 ,  H04L25/34 ,  H03M5/08

    CPC分类号： H04L25/08 ,  H03K5/082 ,  H04L25/061

    摘要： An improved decoder for recovering Non-Return-to-Zero Interface (NRZI) digital data from a multiple layer transition (MLT-3) encoded signal in a 100BASE-TX Ethernet (IEEE Standard 802.3u) uses multiple comparators to minimize jitter in the decoded signal. A CMOS-based biasing circuit receives the differential MLT-3 encoded input signals and control signals from a signal amplitude detection circuit. The biasing circuit adjusts for any DC offset, and also generates offset signals based on respective mid-peak voltage values of the respective differential input signals. Four comparators are then used to detect a prescribed edge transition (e.g., a positive edge) coinciding with the respective mid-peak voltage value in the respective signals. The detected edge transitions are then used by edge decoding logic to generate the NRZI bilevel signal.

    摘要翻译： 用于从100BASE-TX以太网（IEEE标准802.3u）中的多层转换（MLT-3）编码信号中恢复非归零接口（NRZI）数字数据的改进解码器使用多个比较器来最小化 解码信号。 基于CMOS的偏置电路从信号幅度检测电路接收差分MLT-3编码的输入信号和控制信号。 偏置电路调整任何DC偏移，并且还基于各个差分输入信号的各个中间峰值电压值产生偏移信号。 然后使用四个比较器来检测与各个信号中的各个中间峰值电压值一致的规定边缘转变（例如，正边沿）。 所检测的边缘转换然后由边缘解码逻辑使用以产生NRZI双电平信号。

    System and method for performing real time data acquisition, process modeling and fault detection of wafer fabrication processes
    97.
    发明授权
    System and method for performing real time data acquisition, process modeling and fault detection of wafer fabrication processes 失效
    用于执行晶片制造过程的实时数据采集，过程建模和故障检测的系统和方法

    公开(公告)号：US5859964A

    公开(公告)日：1999-01-12

    申请号：US736919

    申请日：1996-10-25

    申请人： Qingsu Wang ,  Gerald Barnett ,  R. Michael Greig ,  Yi Cheng

    发明人： Qingsu Wang ,  Gerald Barnett ,  R. Michael Greig ,  Yi Cheng

    IPC分类号： H01L21/66 ,  G06F11/00

    CPC分类号： H01L22/20

    摘要： A system and method for detecting faults in wafer fabrication process tools by acquiring real-time process parameter signal data samples used to model the process performed by the process tool. The system includes a computer system including a DAQ device, which acquires the data samples, and a fault detector program which employs a process model program to analyze the data samples for the purpose of detecting faults. The model uses data samples in a reference database acquired from previous known good runs of the process tool. The fault detector notifies a process tool operator of any faults which occur thus potentially avoiding wafer scrap and potentially improving mean time between failures. The fault detector also receives notification of the occurrence of process events from the process tool, such as the start or end of processing a wafer, which the fault detector uses to start and stop the data acquisition, respectively. The fault detector also receives notification of the occurrence of a new process recipe and uses the recipe information to select the appropriate model for modeling the data samples. The fault detector employs a standard data exchange interface, such as DDE, between the fault detector and the model, thus facilitating modular selection of models best suited to the particular fabrication process being modeled. Embodiments are contemplated which use a UPM model, a PCA model, or a neural network model.

    摘要翻译： 一种用于通过获取用于对由过程工具执行的过程进行建模的实时过程参数信号数据样本来检测晶片制造工艺工具中的故障的系统和方法。 该系统包括一个计算机系统，它包括一个采集数据样本的DAQ设备，以及一个故障检测程序，该程序采用一个过程模型程序来分析数据样本以检测故障。 该模型使用从先前已知的良好流程工具获取的参考数据库中的数据样本。 故障检测器通知过程工具操作员发生的任何故障，从而潜在地避免晶片废料，并有可能改善故障之间的平均时间。 故障检测器还接收来自处理工具的处理事件的发生的通知，例如处理晶片的开始或结束，故障检测器分别用于启动和停止数据采集。 故障检测器还接收新工艺配方的发生的通知，并使用配方信息来选择用于建模数据样本的适当模型。 故障检测器在故障检测器和模型之间采用标准数据交换接口（如DDE），从而便于模型选择最适合于被建模的特定制造过程。 考虑使用UPM模型，PCA模型或神经网络模型的实施例。