Method of diagnosing deterioration of the insulation of an electric power cable
    2.
    发明授权
    Method of diagnosing deterioration of the insulation of an electric power cable 失效
    诊断电力电缆绝缘劣化的方法

    公开(公告)号:US06340891B1

    公开(公告)日:2002-01-22

    申请号:US09445798

    申请日:1999-12-10

    IPC分类号: G01R3102

    CPC分类号: G01R31/021

    摘要: The diagnosis method of deterioration of electric power cable is that which diagnoses the deterioration accurately without a especial effort to reduce the harmonics in an electric power source equipment for test. Loss current component, which is obtained by rejecting the capacitive component of frequency f1 contained in the total current flowing in the insulation of the electric power cable, when superimposing a first voltage V1 of frequency f1 and a second voltage V2 of frequency f2 (V1≧V2) to an electric power cable, is measured. Further the current components and the frequency components contained in the current is investigated. The deterioration diagnosis is implemented by frequency components excepting the frequency f1, f2 and the their harmonic. As combinations of frequency f1 and f2 of the AC voltage a combination that frequency f2 is two times of the frequency f1 is used, and the current components of frequency components of four times of the first voltage in the frequency components are measured, and the deterioration are diagnosed by the current components and the superimposed phases &thgr;4.

    摘要翻译: 电力电缆劣化的诊断方法是在没有特别努力地降低用于测试的电源设备中的谐波的情况下精确地诊断劣化的电流分量。通过拒绝包含在电源设备中的频率f1的电容分量而获得的电流分量 测量在电力电缆的绝缘中流动的总电流,当将f1的第一电压V1和f2(V1> = V2)的第二电压V2叠加到电力电缆时。 此外,研究了电流中包含的电流分量和频率分量。 恶化诊断由除频率f1,f2及其谐波之外的频率分量实现。 作为交流电压的频率f1和f2的组合,使用频率f2是频率f1的两倍的组合,并且测量频率分量中的第一电压的四倍的频率分量的电流分量,并且恶化 由当前分量和叠加的相位θ4诊断。

    Closed-caption decoder circuit having robust synchronization features
    3.
    发明授权
    Closed-caption decoder circuit having robust synchronization features 失效
    具有鲁棒同步特征的闭路字幕解码器电路

    公开(公告)号:US5506626A

    公开(公告)日:1996-04-09

    申请号:US181985

    申请日:1994-01-14

    IPC分类号: H04N7/035 H04N7/08

    CPC分类号: H04N7/0352

    摘要: A closed-caption decoder which uses separate clock generators to produce the sampling frequencies for the clock run-in signal and the data portion of the closed-caption signal. Each of the clock generators generates its signal from a common 12 MHz reference clock signal. The timing of the sampling clock signal for the closed-caption data is advanced at the start of the sampling interval to reduce the total timing errors in the sampling of the closed-caption data. Additionally, the decoder can adaptively select one of four edges of the clock run-in signal to use as its synchronizing reference. Furthermore, the decoder may be adapted to recognize more than one start byte pattern.

    摘要翻译: 一种封闭字幕解码器,其使用单独的时钟发生器来产生时钟输入信号和闭路字幕信号的数据部分的采样频率。 每个时钟发生器从公共12MHz参考时钟信号产生其信号。 封闭字幕数据的采样时钟信号的定时在采样间隔开始时提前,以减少闭路字幕数据采样中的总定时误差。 此外,解码器可以自适应地选择时钟输入信号的四个边沿中的一个作为其同步参考。 此外,解码器可以适于识别多于一个起始字节模式。

    Data slice circuit
    5.
    发明授权
    Data slice circuit 失效
    数据片电路

    公开(公告)号:US5469091A

    公开(公告)日:1995-11-21

    申请号:US952724

    申请日:1992-11-20

    CPC分类号: H04L25/063 H04N7/0355

    摘要: A data slice circuit is provided for slicing the caption data or the likes included in a television signal at an optimum voltage. A product between a clock-run signal sliced by a comparator at a tentative reference voltage and a clock signal which is 16 times the clock-run signal is stored in a shift register as 16 bit information, and out of them, only the 8 bits around its center are taken in a duty-factor check block, thereby judging the suitability of the slice level. Based on the result obtained, the value of the counter is increased or decreased, and it is taken as a renewed reference voltage through a pulse width conversion circuit and an integration circuit. Also with data sliced by a renewed reference voltage, the check is executed similarly, and a slicing action at an optimum level is achieved.

    摘要翻译: PCT No.PCT / JP92 / 00360 Sec。 371日期:1992年11月20日 102(e)1992年11月20日日期PCT提交1992年3月25日PCT公布。 第WO92 / 17029号公报 日期:1992年10月1日。提供一种数据切片电路,用于以最佳电压对包含在电视信号中的字幕数据进行切片。 由暂定参考电压的比较器切断的时钟运行信号与时钟运算信号的16倍的时钟信号之间的乘积作为16位信息存储在移位寄存器中,其中仅有8位 围绕其中心进入占空比检查块,从而判断切片级别的适用性。 基于获得的结果,计数器的值增加或减小,并且通过脉冲宽度转换电路和积分电路作为更新的参考电压。 同样,通过更新的参考电压切片的数据,类似地执行检查,并且实现了在最佳水平的切片动作。

    Cable connecting structure
    6.
    发明授权
    Cable connecting structure 有权
    电缆连接结构

    公开(公告)号:US07211732B2

    公开(公告)日:2007-05-01

    申请号:US11066441

    申请日:2005-02-28

    IPC分类号: H02G15/02 H01R4/00

    CPC分类号: H01R4/70 H01R13/5205

    摘要: A cable connecting structure, which includes a cable accommodating box comprising: a box main body in which a connected portion of two cables is accommodated; a first flange portion which is attached to one end of said box main body, and includes a first cable port through which one of said two cables is received; and a second flange portion which is attached to other end of said box main body, and includes a second cable port through which other of said two cables is received, and a tube portion for retrieving a grounding cable, a main portion of which protrudes inward said box main body.

    摘要翻译: 一种电缆连接结构,包括电缆容纳盒,包括:盒主体,其中容纳有两根电缆的连接部分; 第一凸缘部,其附接到所述盒主体的一端,并且包括第一电缆端口,所述两条电缆中的一个被接收; 以及第二凸缘部分,其附接到所述盒主体的另一端,并且包括第二电缆端口,所述两个电缆中的另一个被容纳在所述第二电缆端口中;以及管部分,用于检索接地电缆,所述接地电缆的主要部分向内突出 说盒主体。

    Cable connecting structure
    7.
    发明申请
    Cable connecting structure 有权
    电缆连接结构

    公开(公告)号:US20050221650A1

    公开(公告)日:2005-10-06

    申请号:US11066441

    申请日:2005-02-28

    CPC分类号: H01R4/70 H01R13/5205

    摘要: A cable connecting structure, which includes a cable accommodating box comprising: a box main body in which a connected portion of two cables is accommodated; a first flange portion which is attached to one end of said box main body, and includes a first cable port through which one of said two cables is received; and a second flange portion which is attached to other end of said box main body, and includes a second cable port through which other of said two cables is received, and a tube portion for retrieving a grounding cable, a main portion of which protrudes inward said box main body.

    摘要翻译: 一种电缆连接结构,包括电缆容纳盒,包括:盒主体,其中容纳有两根电缆的连接部分; 第一凸缘部,其附接到所述盒主体的一端,并且包括第一电缆端口,所述两条电缆中的一个被接收; 以及第二凸缘部分,其附接到所述盒主体的另一端,并且包括第二电缆端口,所述两个电缆中的另一个被容纳在所述第二电缆端口中;以及管部分,用于检索接地电缆,所述接地电缆的主要部分向内突出 说盒主体。

    Data slicing circuit and method
    8.
    发明授权
    Data slicing circuit and method 失效
    数据切片电路及方法

    公开(公告)号:US5483289A

    公开(公告)日:1996-01-09

    申请号:US171744

    申请日:1993-12-22

    CPC分类号: H04N7/0355

    摘要: A circuit and method of data slicing a television signal comprises: an extractor 2 for extracting a specific component from the television signal of analog form; a slicer 3 for slicing the specific component of the television signal produced by the extractor 2 and converting it to its digital form; a decoder 4 for decoding an output of the slicer 3 for display; an initial value storage 10 for storing an initial value of the slice level; slice level controllers 7 and 8 for varying the initial slice level at a predetermined rate; a signal detector 11 for examining whether or not the digitized specific component from the slicer 3 is a desired multiplex signal; a temporary slice level memory 13 for storing the upper and lower levels of the desired multiplex signal detected by the signal detector 11; a calculator 9 for calculating an optimum value of the slice level from the upper and lower levels of the multiplex signal stored in the temporary slice level memory 13; a slice level storage 6 for storing the optimum slice level calculated by the calculator 9; and a controller 14 for selectively feeding the slicer 3 with the optimum slice level retrieved from either the slice level storage 6 or the slice level controllers 7 and 8 according to a resultant judgment of the signal detector 11.

    摘要翻译: 电视信号数据分片电路和方法包括:提取器2,用于从模拟形式的电视信号中提取特定分量; 切片机3,用于对提取器2产生的电视信号的特定分量进行切片,并将其转换为数字形式; 解码器4,用于解码限幅器3的输出以进行显示; 用于存储限幅电平的初始值的初始值存储器10; 用于以预定速率改变初始限幅电平的限幅电平控制器7和8; 用于检查来自限幅器3的数字化特定分量是否是期望的多路复用信号的信号检测器11; 临时限幅电平存储器13,用于存储由信号检测器11检测到的期望多路复用信号的上和下电平; 计算器9,用于根据存储在临时限幅电平存储器13中的多路复用信号的上限和下限来计算限幅电平的最佳值; 用于存储由计算器9计算的最佳限幅电平的限幅电平存储器6; 以及控制器14,用于根据信号检测器11的结果判断,从限幅电平存储器6或限幅电平控制器7和8中选择性地馈送具有最佳限幅电平的限幅器3。