Filter processing system for the output signal of optical time domain reflectometer in the chromatic dispersion distribution measurement apparatus
    83.
    发明授权
    Filter processing system for the output signal of optical time domain reflectometer in the chromatic dispersion distribution measurement apparatus 失效
    用于色散分布测量装置中光时域反射计输出信号的滤波处理系统

    公开(公告)号:US06882410B2

    公开(公告)日:2005-04-19

    申请号:US10346005

    申请日:2003-01-16

    IPC分类号: G01M11/00 G01M11/02 G01N21/00

    CPC分类号: G01M11/3127 G01M11/3163

    摘要: A filter processing system making it possible to be able to set a frequency pass-band automatically and to provide the optimum filter to an input signal. A filter processing method of an output signal of an Optical Time Domain Reflectometer (OTDR) in a chromatic dispersion distribution measuring apparatus is disclosed. The filter processing method includes establishing measuring-condition parameters, generating an ideal signal waveform based on previously established chromatic dispersion values and the measuring-condition parameters, and providing correlation results between the ideal signal waveform and a filter input signal. The method also includes comparing the correlation results to a threshold value to generate a minimum chromatic dispersion value and a maximum chromatic dispersion value, and performing filter processing for the output of the OTDR based on the minimum chromatic dispersion value and the maximum chromatic dispersion value.

    摘要翻译: 一种滤波处理系统,使得能够自动设置频带,并为输入信号提供最佳滤波。 公开了一种色散分布测量装置中的光时域反射计(OTDR)的输出信号的滤波处理方法。 滤波处理方法包括建立测量条件参数,基于先前建立的色散值和测量条件参数产生理想信号波形,并提供理想信号波形和滤波器输入信号之间的相关结果。 该方法还包括将相关结果与阈值进行比较以产生最小色散值和最大色散值,并且基于最小色散值和最大色散值对OTDR的输出执行滤波处理。

    Digital blocks television tuner having simple baseband signal processing portion
    84.
    发明授权
    Digital blocks television tuner having simple baseband signal processing portion 失效
    具有简单基带信号处理部分的数字电视调谐器

    公开(公告)号:US06559899B1

    公开(公告)日:2003-05-06

    申请号:US09598966

    申请日:2000-06-21

    IPC分类号: H04N550

    摘要: A digital television tuner is realized in which the construction of a baseband signal processing portion is simple, it is difficult for a local oscillation signal to leak to the input end side, and in which image interference is suppressed. The digital television tuner includes a frequency conversion device for converting the frequency of a digital television signal of a channel to be received from among channels arranged in a predetermined frequency band into the highest frequency of the frequency band or higher; two mixing devices for outputting two baseband signals whose phases are mutually orthogonal to each other by demodulating the frequency-converted digital television signal; a local oscillation device for inputting local oscillation signals whose phases are mutually orthogonal to each other to the two mixing devices; and an addition device for adding together the two baseband signals, wherein the frequency of the local oscillation signals is set to be the same frequency as the frequency at the end of the band in the channel of the frequency-converted digital television signal, and one of the baseband signals is converted into the same phase as that of the other, after which the signals are input to the addition device.

    摘要翻译: 实现数字电视调谐器,其中基带信号处理部分的构造简单,本地振荡信号难以泄漏到输入端侧,并且抑制了图像干扰。 数字电视调谐器包括:频率转换装置,用于将布置在预定频带中的频道中的要接收的频道的数字电视信号的频率转换为频带的最高频率; 两个混合装置,用于通过解调频率转换的数字电视信号来输出相位彼此相互正交的两个基带信号; 本地振荡装置,用于输入其相位彼此相互正交的本地振荡信号到两个混合装置; 以及用于将两个基带信号相加在一起的加法装置,其中本地振荡信号的频率被设置为与频率转换的数字电视信号的信道中的频带末端的频率相同的频率,一个 的基带信号被转换成与另一个基带信号相同的相位,之后信号被输入到加法装置。

    Ultrasonic diagnostic imaging system
    85.
    发明授权
    Ultrasonic diagnostic imaging system 失效
    超声诊断成像系统

    公开(公告)号:US06344023B1

    公开(公告)日:2002-02-05

    申请号:US09699458

    申请日:2000-10-31

    IPC分类号: A61B800

    摘要: A nonlinear distortion-based ultrasonic diagnostic imaging system displays a raised-resolution video of tissue inside a body at an increased frame rate. Using a two-pulse technique, a transducer driver supplies narrower-width and wider-width driving pulses to a transducer, which transmits weaker and stronger ultrasonic wave pulses alternately while putting the same intervals between adjacent ultrasonic wave pulses to obtain a weaker echo and a stronger echo. An equalizer equalizes each weaker echo to the stronger echo into an equalized weaker echo. An interpolator calculates an interpolation value between the equalized weaker echo and an equalized previous weaker echo obtained from a previous weaker echo. For each weaker ultrasonic wave pulse, a detector finds a difference between the interpolation value and a stronger echo obtained between the weaker echo and the previous weaker echo. The equalization and interpolation enables high-speed scanning, which has not been achieved with two-pulse technique. Thus, a raised-resolution video signal of the tissue is formed at an increased frame rate on the basis of the difference signal and a scan control signal which is also used in the transducer.

    摘要翻译: 基于非线性失真的超声诊断成像系统以增加的帧速率显示身体内的组织的升高分辨率视频。 使用双脉冲技术,换能器驱动器向传感器提供较窄宽度和宽宽度的驱动脉冲,其在相邻超声波脉冲之间施加相同的间隔以交替地传递较弱和更强的超声波脉冲以获得较弱的回波和 更强的回声。 均衡器将每个较弱的回波与较强的回波均衡,达到平衡较弱的回波。 内插器计算均衡的较弱回波和从先前更弱的回波获得的均衡的先前更弱的回波之间的内插值。 对于每个较弱的超声波脉冲,检测器发现内插值与较弱回波和先前较弱回波之间获得的较强回波之间的差异。 均衡和内插可实现高速扫描,这是双脉冲技术尚未实现的。 因此,基于差分信号和在换能器中也使用的扫描控制信号,以增加的帧速率形成组织的升高分辨率的视频信号。

    Data compression device that switches between intra-frame coding and inter-frame coding
    86.
    发明授权
    Data compression device that switches between intra-frame coding and inter-frame coding 失效
    在帧内编码和帧间编码之间进行切换的数据压缩装置

    公开(公告)号:US06282242B1

    公开(公告)日:2001-08-28

    申请号:US09059676

    申请日:1998-04-13

    IPC分类号: H04N718

    摘要: A data compression device for correctly allotting limited amounts of data and performing high image quality compression of video data by means of a method suitable for an authoring device such as the MPEG (Moving Picture Experts Group) technique so that when the desired amount of data for compression is set based on the data quantity detected by the previous data compression processing, the target bit quantity is set in specified block units, allotted to separate frames and then corrected by means of the individual block structure.

    摘要翻译: 一种用于通过适合于诸如MPEG(运动图像专家组)技术的创作设备的方法来正确地分配有限数量的数据并执行视频数据的高图像质量压缩的数据压缩装置,使得当期望的数据量 基于由先前数据压缩处理检测到的数据量来设置压缩,将目标比特量设置为指定的块单位,分配给分离的帧,然后通过各个块结构进行校正。

    Load cell weighing apparatus using the same
    88.
    发明授权
    Load cell weighing apparatus using the same 失效
    称重传感器称重装置使用该装置

    公开(公告)号:US5929390A

    公开(公告)日:1999-07-27

    申请号:US527090

    申请日:1995-09-12

    IPC分类号: G01G3/14 G01L1/22 G01G3/08

    摘要: A load cell includes a strain inducing element having a fixed rigid body fixedly secured to a base support, and a plurality of transverse beams spaced one above the other and connecting the fixed and movable rigid bodies together. Each of the transverse beams has first and second strain generating areas defined therein in spaced relation to each other at respective locations adjacent the fixed and movable rigid bodies. A bridge circuit for outputting a load signal of a magnitude proportional to strains generated at the strain generating areas includes strain gauges for detecting the strains generated at the strain generating areas, adjusting elements for adjusting a balance of the bridge circuit, and lines connecting them together. A circuit portion of the bridge circuit which includes at least the strain gauge and some of the lines is formed in a predetermined pattern on one surface of the strain inducing element so as to straddle between the first and second strain generating areas. Not only is the circuit portion symmetrical with respect to a point intermediate between the first and second strain generating areas, but also the strain inducing element has left and right portions, including the fixed and movable rigid bodies, which are symmetrical to each other.

    摘要翻译: 测力传感器包括应变诱导元件,其具有固定地固定到基座支撑件上的固定刚体,以及多个横向梁,其横向间隔开并将固定和移动的刚体连接在一起。 每个横梁具有限定在其中的第一和第二应变产生区域,其中相邻于固定和可移动刚体的相应位置彼此间隔开。 用于输出与在应变产生区域产生的应变成比例的大小的负载信号的桥接电路包括用于检测在应变产生区域处产生的应变的应变计,用于调整桥接电路的平衡的调整元件以及将它们连接在一起的线 。 至少包括应变计和一些线路的电路电路的电路部分以预定的图案形成在应变诱发元件的一个表面上,以跨越第一和第二应变产生区域。 电路部分不仅相对于第一和第二应变产生区域之间的点对称,而且应变引发元件还具有彼此对称的左右部分,包括固定和移动的刚体。

    Perpendicular magnetic recording medium and method of producing same
    90.
    发明授权
    Perpendicular magnetic recording medium and method of producing same 失效
    垂直磁记录介质及其制造方法

    公开(公告)号:US5660929A

    公开(公告)日:1997-08-26

    申请号:US154393

    申请日:1993-11-18

    IPC分类号: G11B5/64 G11B5/66 B32B33/00

    摘要: A perpendicular magnetic recording medium is fabricated based on R.sub.21-60 (Fe.sub.1-y Co.sub.y).sub.z M.sub.0-10 wherein z is balance and at least 70 at % of R is Nd and/or Pr, the balance of R being one or more of other rare earth elements, and wherein y is less than 0.5 by atomic ratio. M is at least one of various additional metal elements. The Curie temperature Tc is between 70.degree. to 250.degree. C.; the saturation magnetization Ms is about 450 emu/cc or more; the uniaxial perpendicular magnetic anisotropy constant Ku of 2.5.times.10.sup.6 erg/cc or more is attained. Kerr rotation angle is 0.3 degree or more, which provides a magneto-optic recording medium. Since light rare earth elements having the collinear alignment of magnetic moment with Fe are used as a key element, it is possible to fabricate uniform perpendicular magnetic anisotropy thin films in a mass production scale at a low cost.

    摘要翻译: 基于R21-60(Fe1-yCoy)zM0-10制造垂直磁记录介质,其中z为余量,R为至少70原子%为Nd和/或Pr,其余R为其中一种或多种稀有金属 土元素,其中y按原子比小于0.5。 M是各种附加金属元素中的至少一种。 居里温度Tc为70〜250℃。 饱和磁化强度Ms约为450emu / cc以上; 获得2.5×10 6 erg / cc以上的单轴垂直磁各向异性常数Ku。 克尔旋转角度为0.3度以上,其提供磁光记录介质。 由于将具有磁矩与Fe的共线对准的轻稀土元素用作关键元件,所以可以以低成本大规模生产均匀的垂直磁各向异性薄膜。