Distortion compensating device
    1.
    发明授权
    Distortion compensating device 失效
    失真补偿装置

    公开(公告)号:US06487261B2

    公开(公告)日:2002-11-26

    申请号:US09784491

    申请日:2001-02-15

    IPC分类号: H04B110

    摘要: A distortion compensating device provided in a receiver for compensating distortion which is added to a signal in a transmission path. The signal is generated in a multi-level modulator of a transmitter in which a digital signal is mapped to one of a plurality of specified signal points in a signal space diagram. The device includes a signal-point-position averaging circuit for producing an average signal point for each of a plurality of distributions of received signal points in the signal space diagram. A discrimination circuit in the device discriminates the average signal point closest to a received signal point from other average signal points in the signal space diagram.

    摘要翻译: 一种在接收机中提供的用于补偿被添加到传输路径中的信号的失真的失真补偿装置。 信号在发射机的多电平调制器中产生,其中数字信号被映射到信号空间图中的多个指定信号点中的一个。 该装置包括信号点位置平均电路,用于产生信号空间图中的接收信号点的多个分布中的每一个的平均信号点。 设备中的识别电路从信号空间图中的其他平均信号点鉴别最接近接收信号点的平均信号点。

    Distortion compensating device
    2.
    发明授权
    Distortion compensating device 失效
    失真补偿装置

    公开(公告)号:US06201841B1

    公开(公告)日:2001-03-13

    申请号:US08526766

    申请日:1995-09-11

    IPC分类号: H04B110

    摘要: A distortion compensating device provided in a receiver for compensating distortion which is added to a signal in a transmission path. The signal is generated in a multi-level modulator of a transmitter of which a digital signal is mapped to one of a plurality of specified signal points in a signal space diagram. The device includes discrimination circuits for discriminating a received signal according to threshold lines partitioning the signal space diagram into discrimination areas, the threshold lines being defined so that the discrimination areas on an outer side of the signal space diagram having each an area greater than an area of each of the discrimination areas on an inner side of the signal space diagram and a selection circuit for selecting one of a plurality of threshold line patterns based on a level of the received signal which is discriminated according to a selected threshold line pattern.

    摘要翻译: 一种在接收机中提供的用于补偿被添加到传输路径中的信号的失真的失真补偿装置。 该信号是在信号空间图中将数字信号映射到多个指定信号点中的一个的发射机的多电平调制器中产生的。 该装置包括用于根据将信号空间图划分为鉴别区域的阈值线来识别接收信号的鉴别电路,阈值线被定义为使信号空间图的外侧上的每个面积大于面积的区分 信号空间图的内侧上的每个鉴别区域的选择电路,以及用于根据所选择的阈值线路图案识别的接收信号的电平来选择多个阈值线路图案之一的选择电路。

    Distortion compensating device
    3.
    发明授权

    公开(公告)号:US06987814B2

    公开(公告)日:2006-01-17

    申请号:US10177075

    申请日:2002-06-20

    IPC分类号: H04L27/36

    摘要: A distortion compensating device provided in a receiver for compensating distortion which is added to a signal in a transmission path. The signal is generated in a multi-level modulator of a transmitter in which a digital signal is mapped to one of a plurality of specified signal points in a signal space diagram. The device includes a signal-point-position averaging circuit for producing an average signal point for each of a plurality of distributions of received signal points in the signal space diagram. A discrimination circuit in the device discriminates the average signal point closest to a received signal point from other average signal points in the signal space diagram.

    Automatic amplitude equalizer
    4.
    发明授权
    Automatic amplitude equalizer 失效
    自动幅度均衡器

    公开(公告)号:US5978415A

    公开(公告)日:1999-11-02

    申请号:US533119

    申请日:1995-09-25

    CPC分类号: H04L27/01

    摘要: The invention provides an automatic amplitude equalizer for compensating an amplitude characteristic of an input signal, wherein a control signal for equalizing an inclination amplitude distortion of an input signal is detected making use of a pair of digital demodulated signals to compensate for the amplitude characteristic of the input signal with a high degree of accuracy and which can be constructed with a reduced circuit scale and at a reduce cost. The automatic amplitude equalizer includes a first-order inclination amplitude equalization section for compensating for an amplitude characteristic of an input signal in accordance with a first-order inclination amplitude characteristic, and a control section for discriminating a direction of variation of a value of a first one of a pair of digital demodulated signals originating from the input signal, detecting error information from the other, second one of the digital demodulated signals which is orthogonal to the first signal, and outputting a control signal for the first-order inclination amplitude equalization section based on a correlation between the error information and the direction of variation of the value of the first signal.

    摘要翻译: 本发明提供一种自动幅度均衡器,用于补偿输入信号的幅度特性,其中使用一对数字解调信号来检测用于均衡输入信号的倾斜幅度失真的控制信号,以补偿输入信号的振幅特性 输入信号具有高精确度,并且可以以降低的电路规模和降低成本来构造。 自动幅度均衡器包括:一阶倾斜幅度均衡部分,用于根据一阶倾斜幅度特性补偿输入信号的幅度特性;以及控制部分,用于鉴别第一 从输入信号产生的一对数字解调信号中的一个,从与第一信号正交的数字解调信号中的另一个第二数字解调信号检测出错误信息,并输出一阶倾斜幅度均衡部分的控制信号 基于误差信息与第一信号的值的变化方向之间的相关性。

    Fractionally spaced cross-polarization interference canceller
    5.
    发明授权
    Fractionally spaced cross-polarization interference canceller 失效
    分数间隔交叉极化干扰消除器

    公开(公告)号:US5406589A

    公开(公告)日:1995-04-11

    申请号:US909712

    申请日:1992-07-07

    CPC分类号: H04B7/002

    摘要: A fractionally spaced cross-polarization interference canceller, wherein a compensation signal is generated through an adaptive filter operating in a frequency that is an integer multiple of a transmission data frequency. The cross-polarization interference canceller includes a mechanism for generating an error signal used to control coefficients of the adaptive filter in the integer multiple frequency. The mechanism is realized, for example, by using a waveform generator generating an estimate of a baseband signal in the integer multiple frequency using a plurality of estimates of transmission data and coefficients determined by an impulse response of a transmission path.

    摘要翻译: 一种分数间隔的交叉极化干扰消除器,其中通过以传输数据频率的整数倍的频率工作的自适应滤波器产生补偿信号。 交叉极化干扰消除器包括用于产生用于控制整数倍频率的自适应滤波器的系数的误差信号的机构。 该机制例如通过使用波形发生器来实现,该波形发生器使用传输数据的多个估计和由传输路径的脉冲响应确定的系数来生成整数倍频率的基带信号的估计。

    Cross polarization interference canceler and cross polarization
interference eliminating apparatus using the same
    6.
    发明授权
    Cross polarization interference canceler and cross polarization interference eliminating apparatus using the same 失效
    交叉极化干扰消除器和使用其的交叉极化干扰消除装置

    公开(公告)号:US5710799A

    公开(公告)日:1998-01-20

    申请号:US190067

    申请日:1994-02-01

    申请人: Kenzo Kobayashi

    发明人: Kenzo Kobayashi

    CPC分类号: H04B7/005 H04B7/002 H04B7/10

    摘要: A cross polarization interference canceler includes a digital conversion unit for subjecting a demodulated signal of one channel to an analog-to-digital conversion out of two channels which are independently formed, using carriers having the same frequency but having planes of polarization which are mutually orthogonal. An interference canceling unit is provided for canceling interference caused by the other channel of the two channels, with respect to the demodulated signal which is digitally converted by the digital conversion unit. The canceler further includes an integrator for carrying out an integration process with respect to the demodulated signal which is digitally converted by the digital conversion unit so as to provide a negative feedback to the digital conversion unit.

    摘要翻译: PCT No.PCT / JP93 / 00735 Sec。 371日期1994年2月1日 102(e)1994年2月1日PCT PCT 1993年6月1日PCT公布。 出版物WO93 / 25019 日期:1993年12月9日交叉极化干扰消除器包括数字转换单元,用于使用具有相同频率但具有相同频率的载波的载波,对一个信道的解调信号进行独立形成的两个信道的模数转换 相互正交的极化。 相对于由数字转换单元进行数字转换的解调信号,提供了一种用于消除由两个通道的其它通道引起的干扰的干扰消除单元。 消除器还包括积分器,用于对由数字转换单元进行数字转换的解调信号执行积分处理,以便向数字转换单元提供负反馈。

    Optical sensor with fiberless optical member
    7.
    发明授权
    Optical sensor with fiberless optical member 失效
    光纤传感器,无光纤光学元件

    公开(公告)号:US5233177A

    公开(公告)日:1993-08-03

    申请号:US801951

    申请日:1991-12-03

    IPC分类号: G06K7/10 G06K9/20 H04N1/028

    摘要: An optical sensor has an optical block including a substrate, a light-emitting element formed on the substrate, and a light-receiving element formed on the substrate by using an adjusting member for arranging side-by-side with the light-emitting element, a light-transmitting member located between the optical block and an object, and connecting terminal optically connected to the light-emitting element and the light-receiving element. It is preferable that the light-transmitting member is separated into a plurality of light transmitting members in correspondence with areas separated on the object. There is also provided an optical sensor having a light-transmitting member, a plurality of incident optical fibers, optically coupled with the light-transmitting member, for transmitting light emitted from a light-emitting element to the light-transmitting member, a plurality of outgoing optical fibers, optically coupled with the light-transmitting member, for transmitting light passed through the light-transmitting member after being reflected on an object to the light-receiving element, and a housing for integrally housing the light-transmitting member, the incident optical fiber, and the outgoing optical fibers.

    Reinforced connection for a chemical connector and method of
constructing therefor
    10.
    发明授权
    Reinforced connection for a chemical connector and method of constructing therefor 失效
    化学连接器的加强连接器及其构造方法

    公开(公告)号:US4846709A

    公开(公告)日:1989-07-11

    申请号:US111200

    申请日:1987-10-22

    IPC分类号: H01R4/01 H05K3/36

    CPC分类号: H05K3/365 H01R4/01 H01R12/62

    摘要: A reinforcing fastener for fastening a chemical connector and an electronic circuit includes a substantially cylindrical section shaped element having edges defining an axial slit, wherein the element is formed of an alloy having both superelastic and shape memory properties. The slit is of such a size at a temperature below the Martensite transformation temperature of the alloy that the alloy is superelastically deformed when the slit is maintained at the same size while the alloy is above the Martensite transformation temperature. This results in the chemical connector being fastened to the electronic circuit with a substantially constant force over time.

    摘要翻译: 用于紧固化学连接器和电子电路的加强紧固件包括具有限定轴向狭缝的边缘的大致圆柱形的截面元件,其中该元件由具有超弹性和形状记忆特性的合金形成。 在低于合金的马氏体相变温度的温度下,狭缝的尺寸是这样的,当合金高于马氏体相变温度时,当狭缝保持相同的尺寸时,合金被超塑性变形。 这导致化学连接器以随时间的基本恒定的力紧固到电子电路。