Frequency locked loop with constant loop gain and frequency difference
detector therefor
    4.
    发明授权
    Frequency locked loop with constant loop gain and frequency difference detector therefor 失效
    具有恒定环路增益的频率锁定环和频差检测器

    公开(公告)号:US4720687A

    公开(公告)日:1988-01-19

    申请号:US18095

    申请日:1987-02-20

    CPC分类号: H04L7/033 H03L7/087

    摘要: A digital signal regenerator comprises a quantizer, a sampler, a timing extractor and a frequency and phase locked loop. The included frequency locked loop employs a frequency difference detector and a frequency generator which it shares with the included phase locked loop. The frequency difference detector includes flip-flops for generating square wave frequency difference signals, obviating the need for the multipliers, comprators and low pass filters used in prior devices. In addition, the frequency difference detector includes pulse-width modulator which is controlled by a pulse-width regulator. The regulator provides for a constant loop gain for the frequency locked loop over different reference frequencies output by the frequency generator.

    摘要翻译: 数字信号再生器包括量化器,采样器,定时提取器和频率和锁相环。 所包含的锁频环采用频率差检测器和频率发生器,它与所附带的锁相环共享。 频差检测器包括用于产生方波频差信号的触发器,从而避免了对现有装置中使用的乘法器,压缩器和低通滤波器的需要。 此外,频率差检测器包括由脉冲宽度调节器控制的脉宽调制器。 调节器为由频率发生器输出的不同参考频率上的锁相环提供恒定的环路增益。

    Systems and methods for the detection of short and long samples
    5.
    发明授权
    Systems and methods for the detection of short and long samples 有权
    用于检测短和长样品的系统和方法

    公开(公告)号:US07177767B2

    公开(公告)日:2007-02-13

    申请号:US10273873

    申请日:2002-10-18

    IPC分类号: G06F19/00

    CPC分类号: G16H10/40 G06F19/00

    摘要: Methods and systems are provided for detecting the accidental use of short and long samples in the clinical analysis of a sample, specimen, or assay. The systems can include a clinical analyzer for determining one or more values for one or more measurable characteristics of a sample. These values are used in combination with reference data stored in a data module to generate a probability that the sample tested is a short sample, a long sample, or an acceptable sample. This probability and/or the status of the sample as a short sample, a long sample, or an acceptable sample are output to a user.

    摘要翻译: 提供了方法和系统,用于在样品,标本或测定的临床分析中检测短和长样品的意外使用。 该系统可以包括用于确定样品的一个或多个可测量特征的一个或多个值的临床分析器。 这些值与存储在数据模块中的参考数据组合使用,以产生测试样本是短样本,长样本或可接受样本的概率。 作为短样本,长样本或可接受样本的样本的这种概率和/或状态被输出给用户。

    Methods for photometric analysis
    6.
    发明授权
    Methods for photometric analysis 失效
    光度分析方法

    公开(公告)号:US5478750A

    公开(公告)日:1995-12-26

    申请号:US292558

    申请日:1994-08-18

    IPC分类号: G01N21/07 G01N21/25 G01N21/17

    摘要: The present invention provides a compact, highly automated photometric analyzer for measuring the concentration of substances found in a fluid, typically a blood sample or other body fluid sample taken from a patient. The operator places a small quantity of the sample into a special rotor and then loads the rotor into the analyzer. The analyzer accepts the rotor, centrifuges and dilutes the sample, and distributes the sample into a plurality of cuvettes near the outer edge of the rotor. Some of these cuvettes hold reagents which react with the sample. The analyzer then measures light absorption within the sample at a number of preselected frequencies. According to the present invention, a pair of specially designed apertures direct light from the sample through a plurality of beam splitters, interference filters, and associated photodetectors. The system also includes means for performing automatic calibration and error checking functions. These means include a through hole through the rotor, and an opaque body carried by the rotor. Additionally, measurements may be repeated through a given cuvette and the results averaged to minimize the effect of random variations between measurements.

    摘要翻译: 本发明提供了一种紧凑的,高度自动化的光度分析仪,用于测量从流体(通常是从患者获取的血液样本或其他体液样品)中发现的物质的浓度。 操作者将少量样品放入专用转子中,然后将转子装入分析仪。 分析仪接受转子,离心并稀释样品,并将样品分配到转子外边缘附近的多个比色皿中。 其中一些比色皿含有与样品反应的试剂。 然后分析仪以多个预选频率测量样品内的光吸收。 根据本发明,一对特别设计的孔径通过多个分束器,干涉滤光器和相关联的光电检测器引导来自样品的光。 该系统还包括用于执行自动校准和错误检查功能的装置。 这些装置包括通过转子的通孔和由转子承载的不透明体。 此外,可以通过给定的比色杯重复测量,并且平均结果以最小化测量之间的随机变化的影响。

    Systems for the detection of short and long samples
    8.
    发明授权
    Systems for the detection of short and long samples 有权
    用于检测短和长样品的系统

    公开(公告)号:US07765069B2

    公开(公告)日:2010-07-27

    申请号:US11196941

    申请日:2005-08-04

    IPC分类号: G06F19/00 G01N31/00 G01N33/48

    CPC分类号: G16H10/40 G06F19/00

    摘要: Methods and systems are provided for detecting the accidental use of short and long samples in the clinical analysis of a sample, specimen, or assay. The systems can include a clinical analyzer for determining one or more values for one or more measurable characteristics of a sample. These values are used in combination with reference data stored in a data module to generate a probability that the sample tested is a short sample, a long sample, or an acceptable sample. This probability and/or the status of the sample as a short sample, a long sample, or an acceptable sample are output to a user.

    摘要翻译: 提供了方法和系统,用于在样品,标本或测定的临床分析中检测短和长样品的意外使用。 该系统可以包括用于确定样品的一个或多个可测量特征的一个或多个值的临床分析器。 这些值与存储在数据模块中的参考数据组合使用,以产生测试样本是短样本,长样本或可接受样本的概率。 作为短样本,长样本或可接受样本的样本的这种概率和/或状态被输出给用户。

    Apparatus and method for signal processing
    10.
    发明授权
    Apparatus and method for signal processing 失效
    用于信号处理的装置和方法

    公开(公告)号:US4733404A

    公开(公告)日:1988-03-22

    申请号:US934879

    申请日:1986-11-25

    CPC分类号: H03L7/0807 H04L7/033

    摘要: A transmission control circuit for use in a data terminal equipment receiver section is disclosed. The output of a phase locked loop or narrow band tuned filter input register clocking circuit which includes a quasi-differentiator and full wave rectifier is sent to a divider circuit and the divided clocking signal is then quasi-differentiated, full-wave rectified and used to drive a signal source circuit. The signal source circuit output has a polarity which is determined by the signal output of the full wave rectifier and is integrated and fed back to control inputs of the quasi-differentiators. An offset signal is also provided to the integrator. The result is an automatic adjustment of the pulse width to a fixed fraction of the input bit period.

    摘要翻译: 公开了一种用于数据终端设备接收器部分的传输控制电路。 包括准微分器和全波整流器的锁相环或窄带调谐滤波器输入寄存器时钟电路的输出被发送到除法器电路,然后分频时钟信号被准微分,全波整流并用于 驱动信号源电路。 信号源电路输出具有由全波整流器的信号输出确定的极性,并被积分并反馈给准微分器的控制输入。 还向积分器提供偏移信号。 结果是将脉冲宽度自动调整到输入位周期的固定分数。