Direct conversion receiver with DC offset compensation
    61.
    发明授权
    Direct conversion receiver with DC offset compensation 有权
    具有直流偏移补偿的直接转换接收器

    公开(公告)号:US07409199B2

    公开(公告)日:2008-08-05

    申请号:US11238644

    申请日:2005-09-29

    IPC分类号: H04B1/10

    CPC分类号: H04L25/061 H04B1/30

    摘要: A direct conversion receiver includes a mixer for converting an RF signal into a baseband signal, a dynamic DC offset compensator for compensating for a dynamic DC offset caused by the effect of second order nonlinear distortion of the mixer on an interfering wave that enters the input terminals of the mixer, and a static DC offset compensator for compensating for a static DC offset caused by self-mixing of a local signal and a leakage component of the local signal that appears at the input terminals of the mixer. The static DC offset compensation starts at a time t1 after a DC offset compensation operation has started. The static DC offset compensation is finished at the next time t2, and then the dynamic DC offset compensation starts. The dynamic DC offset compensation is finished at the next time t3. With this configuration, only a change in DC offset due to the dynamic DC offset is compensated after compensating for the static DC offset component. The dynamic DC offset compensator does not have an element for storing the magnitude of the static DC offset.

    摘要翻译: 直接转换接收机包括用于将RF信号转换为基带信号的混频器,用于补偿由混频器的二阶非线性失真对进入输入端的干扰波引起的动态DC偏移的动态DC偏移补偿器 以及用于补偿由本地信号的自混合引起的静态DC偏移和出现在混频器输入端的本地信号的泄漏分量的静态DC偏移补偿器。 在DC偏移补偿操作开始之后,静态DC偏移补偿在时间t 1开始。 静态DC偏移补偿在下一个时间t 2完成,然后动态DC偏移补偿开始。 动态DC偏移补偿在下一个时间t 3完成。 通过这种配置,在补偿静态DC偏移分量之后,仅补偿由于动态DC偏移引起的DC偏移的变化。 动态DC偏移补偿器没有用于存储静态DC偏移的幅度的元素。

    DC-offset transient response cancel system
    62.
    发明授权
    DC-offset transient response cancel system 失效
    直流偏移瞬态响应取消系统

    公开(公告)号:US07109778B2

    公开(公告)日:2006-09-19

    申请号:US10973915

    申请日:2004-10-27

    IPC分类号: G01R25/00

    CPC分类号: H04B1/30

    摘要: A high pass filter is disposed to an output part of a gain control amplifier. A gain control signal change detector detects a change of a gain control signal from the gain control amplifier. Upon detection of a change of the gain control signal, a counter and a clock generator generate a cancel pulse which has a certain width, and using the cancel pulse, a first switch cuts an AC signal which is fed to the gain control amplifier. Further, using the same cancel pulse, a second switch reduces the time constant of the high pass filter. Through this operation, a transient response of a DC offset is eliminated.

    摘要翻译: 高通滤波器设置在增益控制放大器的输出部分。 增益控制信号变化检测器检测来自增益控制放大器的增益控制信号的变化。 在检测到增益控制信号的变化时,计数器和时钟发生器产生具有一定宽度的取消脉冲,并且使用取消脉冲,第一开关切断被馈送到增益控制放大器的AC信号。 此外,使用相同的消除脉冲,第二开关减小高通滤波器的时间常数。 通过该操作,消除了DC偏移的瞬态响应。

    DC offset calibration system
    63.
    发明申请
    DC offset calibration system 失效
    直流偏移校准系统

    公开(公告)号:US20060084386A1

    公开(公告)日:2006-04-20

    申请号:US11246258

    申请日:2005-10-11

    IPC分类号: H04B1/00 H04B1/10 H04L25/06

    摘要: A division ratio of a first frequency divider that generates a local signal and a division ratio of a second frequency divider that generates a RF interfering signal are different, and a first frequency synthesizer that generates the local signal and a second frequency synthesizer that generates the RF interfering signal employ an identical reference signal. The second frequency synthesizer that generates the RF interfering signal is not provided with a frequency switching function.

    摘要翻译: 产生本地信号的第一分频器和产生RF干扰信号的第二分频器的分频比的分频比不同,以及产生本地信号的第一频率合成器和产生RF干扰信号的第二频率合成器 干扰信号采用相同的参考信号。 产生RF干扰信号的第二频率合成器不具有频率切换功能。

    Frequency mixer device and method for compensating DC offset
    64.
    发明申请
    Frequency mixer device and method for compensating DC offset 有权
    用于补偿直流偏移的混频器装置和方法

    公开(公告)号:US20060030288A1

    公开(公告)日:2006-02-09

    申请号:US11195286

    申请日:2005-08-02

    IPC分类号: H04B1/00 H04B15/06

    摘要: A frequency mixer device is provided with a mixer circuit having an input cell that amplifies an input signal and a switching cell that mixes the amplified input signal with a switching signal and outputs a multiplied signal, and a DC offset compensator that detects the input level of the input signal and outputs a compensation signal based on that detection signal, the compensation signal being supplied to the mixer circuit so as to compensate a DC offset included in the multiplied signal. The compensation signal that the DC offset compensator outputs is added to the output signal of the input cell so as to compensate the DC offset. Low frequency noise included in the compensation signal is converted to a frequency near that of the switching signal, and does not range over the desired waveband of the mixer output.

    摘要翻译: 混频器装置具有混频器电路,该混频器电路具有放大输入信号的输入单元和将放大的输入信号与开关信号混合的开关单元,并输出相乘的信号;以及DC偏移补偿器,其检测输入信号的输入电平 该输入信号并基于该检测信号输出补偿信号,补偿信号被提供给混频器电路,以便补偿相乘信号中包括的DC偏移。 直流偏移补偿器输出的补偿信号被加到输入单元的输出信号上,以补偿直流偏移。 包括在补偿信号中的低频噪声被转换为接近开关信号的频率,并且不超过混频器输出的期望波段。

    Method of preparing CRT funnel glass capable of effectively recycling another glass member
    65.
    发明授权
    Method of preparing CRT funnel glass capable of effectively recycling another glass member 失效
    制备能够有效回收另一玻璃构件的CRT漏斗玻璃的方法

    公开(公告)号:US06865909B2

    公开(公告)日:2005-03-15

    申请号:US10886354

    申请日:2004-07-07

    CPC分类号: H01J29/863 C03C3/105

    摘要: A method for producing CRT funnel glass having a glass composition containing MgO, CaO, SrO, BaO and ZnO as essential components. Further, the total content of MgO, CaO, SrO, BaO and ZnO falls within a range of 5 to 13 mass %. As a glass material of the CRT funnel glass, CRT panel glass or CRT neck glass may be used. The method comprises preparing the glass material so as to contain MgO, CaO, SrO, BaO, and ZnO as essential components and so that the total content of MgO+CaO+SrO+BaO+ZnO falls within a range of 5 to 13 mass %; and melting the glass material.

    摘要翻译: 一种制造具有含有MgO,CaO,SrO,BaO和ZnO作为必要成分的玻璃组合物的CRT漏斗玻璃的方法。 此外,MgO,CaO,SrO,BaO和ZnO的总含量在5〜13质量%的范围内。 作为CRT漏斗玻璃的玻璃材料,可以使用CRT面板玻璃或CRT颈部玻璃。 该方法包括制备玻璃材料以便含有MgO,CaO,SrO,BaO和ZnO作为必要成分,使MgO + CaO + SrO + BaO + ZnO的总含量在5〜13质量%的范围内 ; 并熔化玻璃材料。

    Cathode-ray-tube panel for projection tube
    67.
    发明申请
    Cathode-ray-tube panel for projection tube 审中-公开
    投影管用阴极射线管面板

    公开(公告)号:US20050043165A1

    公开(公告)日:2005-02-24

    申请号:US10922306

    申请日:2004-08-19

    申请人: Hiroshi Komori

    发明人: Hiroshi Komori

    CPC分类号: C03C3/095

    摘要: A cathode-ray-tube panel for a projection tube according to the present invention is made of glass containing not less than 4 ppm of Nd2O3 or not less than 15 ppm of Pr6O11 on a mass percentage basis.

    摘要翻译: 根据本发明的投影管用阴极射线管板由以质量%计含有不少于4ppm Nd2O3或不小于15ppm Pr6O11的玻璃制成。

    CRT panel glass containing SrO and BaO
    68.
    发明授权
    CRT panel glass containing SrO and BaO 失效
    含有SrO和BaO的CRT面板玻璃

    公开(公告)号:US06822383B2

    公开(公告)日:2004-11-23

    申请号:US09939897

    申请日:2001-08-27

    IPC分类号: H01J3100

    摘要: In order to suppress production of devitrifying stones such as barium disilicate and strontium silicate and to achieve a high X-ray absorbability, a CRT panel glass does not substantially contain PbO and contains, in mass percent, 9-9.5% SrO and 8.5-9% BaO. In addition, the value of SrO/(SrO+BaO) is set to 0.50-0.53. Therefore, the CRT panel glass has an X-ray absorption coefficient of 28.0 cm−1 or more at 0.6 Å.

    摘要翻译: 为了抑制二硅酸钡和硅酸锶等失透石的产生,并且为了获得高X射线吸收性,CRT面板玻璃基本上不含有PbO,以质量%计含有9-9.5%的SrO和8.5-9 %宝。 另外SrO /(SrO + BaO)的值设定为0.50-0.53。 因此,CRT面板玻璃在0.6A处的X射线吸收系数为28.0cm -1以上。

    Device for correcting teeth irregularities
    69.
    发明授权
    Device for correcting teeth irregularities 失效
    矫正牙齿不规则的装置

    公开(公告)号:US5271733A

    公开(公告)日:1993-12-21

    申请号:US886564

    申请日:1992-05-21

    IPC分类号: A61C7/12 A61C3/00

    CPC分类号: A61C7/12

    摘要: A supplementary device for use in a device for correcting teeth irregularities includes a bracket having a slit with a T-shaped section and a wire to be inserted into the slit and engaged with the bracket. The wire has an elongated projection, and the supplementary device includes a wire engaging slit having substantially the same shape as the slit in the bracket. At least one protrusion is adapted for engaging a resilient band, and the bracket is slidable along the wire.

    摘要翻译: 用于矫正牙齿不规则的装置中的补充装置包括具有T形截面的狭缝和插入狭缝中并与支架接合的线的托架。 线具有细长的突起,并且辅助装置包括具有与支架中的狭缝基本相同形状的线接合狭缝。 至少一个突出部适于接合弹性带,并且支架可沿导线滑动。