Spread spectrum receiver
    1.
    发明授权
    Spread spectrum receiver 失效
    扩频接收机

    公开(公告)号:US4884284A

    公开(公告)日:1989-11-28

    申请号:US247607

    申请日:1988-09-22

    IPC分类号: H04J13/00 H04B1/7073

    CPC分类号: H04B1/709 H04B1/707

    摘要: A receiver in a spread spectrum communication system includes: a noise detector for detecting noises of a spread spectrum input signal; an initial synchronization circuit including a correlator for detecting a correlation of the spread spectrum input signal, a detector circuit for detecting an output of the correlator, and a comparator for receiving an output of the detector circuit and outputting a correlation detection signal; a synchronization holding circuit for receiving the correlation detection signal to perform synchronization holding and outputting a synchronization holding signal during the synchronization holding; and a control circuit for detecting if the synchronization holding signal is outputted within a predetermined period, and if not, controlling a reference voltage to be supplied to the comparator in accordance with the noise detection output of the noise detecting means.

    摘要翻译: 扩频通信系统中的接收机包括:噪声检测器,用于检测扩频输入信号的噪声; 初始同步电路包括用于检测扩展频谱输入信号的相关性的相关器,用于检测相关器的输出的检测器电路和用于接收检测器电路的输出并输出相关检测信号的比较器; 同步保持电路,用于在同步保持期间接收相关检测信号以执行同步保持并输出同步保持信号; 以及控制电路,用于检测在预定周期内是否输出同步保持信号,如果不是,则根据噪声检测装置的噪声检测输出来控制要提供给比较器的参考电压。

    Spread PN code signal receiver
    2.
    发明授权
    Spread PN code signal receiver 失效
    扩展PN码信号接收器

    公开(公告)号:US5179574A

    公开(公告)日:1993-01-12

    申请号:US787642

    申请日:1991-11-04

    IPC分类号: H04B1/707

    CPC分类号: H04B1/70712

    摘要: A spread PN code signal receiver having a delay locked loop (DLL) circuit in an IF or RF stage characterized in that correlation outputs to be used for the DLL circuit control are (1) a correlation output between (a) a PN code advanced in phase with respect to the received signal and (b) the received signal and (2) a correlation output between (a) a PN code delayed in phase with respect to the received signal and (b) the received signal. The correlation outputs are used to detect the lock/unlock signal in the DLL circuit. In particular, AND logic for these two correlation outputs is employed to generate the lock/unlock signal only when the DLL circuit is perfectly synchronized in phase with the received signal. With this feature, a lock state can not de detected unitl a stable lock state is obtained.

    摘要翻译: 一种在IF或RF级中具有延迟锁定环(DLL)电路的扩展PN码信号接收机,其特征在于用于DLL电路控制的相关输出是(1)在(a) (b)接收信号和(2)(a)相对于接收信号延迟同相的PN码和(b)接收信号之间的相关输出。 相关输出用于检测DLL电路中的锁定/解锁信号。 特别地,只有当DLL电路与接收信号完全同步时,才采用这两个相关输出的AND逻辑来产生锁定/解锁信号。 利用该特征,锁定状态不能被检测到单元1获得稳定的锁定状态。

    Liquid container, cap used with the liquid container, and cap-equipped liquid container
    3.
    发明授权
    Liquid container, cap used with the liquid container, and cap-equipped liquid container 失效
    液体容器,与液体容器一起使用的盖子,以及带帽的液体容器

    公开(公告)号:US06916085B2

    公开(公告)日:2005-07-12

    申请号:US10609420

    申请日:2003-07-01

    IPC分类号: B41J2/175 B41J2/14

    摘要: A liquid container includes a lever having one end supported to an outer wall of a housing containing a liquid therein and the other end as a free end, the lever being elastically deformable. The liquid container further includes a projection provided in an area of the housing which is opposite to and away from the supported one end of the lever, the projection covering at least a part of a space between the free end of the lever and the housing in the above area. By virtue of the projection, the lever can be protected against accidental external forces. In a cap-equipped liquid container, a straight line connecting a projected end of the projection of the liquid container and a distal end of a tab of a cap is set to cross a movable range of the lever provided on the liquid container in which the lever is allowed to angularly move with elastic deformation thereof. In a cap, an elastic sealing member for sealing off the surroundings of the supply port of the liquid container is provided on a bottom wall portion connecting first and second latch members to each other, and a part of the bottom wall portion is able to elastically deform upon application of an operating force.

    摘要翻译: 液体容器包括杠杆,该杆具有一端支撑在壳体的外壁上,该外壳包含液体,另一端作为自由端,该杆可弹性变形。 所述液体容器还包括设置在所述壳体的与所述杆的所述支撑的一端相对且远离所述支撑的一端的区域中的突出部,所述突起覆盖所述杠杆的自由端和所述壳体之间的空间的至少一部分 以上区域。 通过突出,杠杆可以防止意外的外力。 在配备有盖的液体容器中,连接液体容器的突出部的突出端和盖的突出部的直线被设置为与设置在液体容器上的液压容器的杠杆的可移动范围相交叉, 允许杠杆以其弹性变形成角度地移动。 在一个盖子中,一个用于密封液体容器的供应口周围的弹性密封件设置在彼此连接第一和第二闩锁构件的底壁部分上,并且底壁部分的一部分能够弹性地 在施加操作力时变形。

    Spread spectrum communication system
    7.
    发明授权
    Spread spectrum communication system 失效
    扩频通信系统

    公开(公告)号:US5090023A

    公开(公告)日:1992-02-18

    申请号:US428005

    申请日:1989-10-27

    IPC分类号: H04B1/707

    CPC分类号: H04B1/70712

    摘要: The correlation between a PN code pattern of the synchronization preamble data of an incoming spread spectrum signal and a reference PN code pattern generated on the reception side is detected by using an SAW convolver. The gate length of the SAW convolver is shorter than the preamble data length. However, an apparatus which can obtain the true correlation output by calculating the logical multiplication of the correlation output from the SAW convolver and the validation pulse is constituted.

    摘要翻译: 通过使用SAW卷积器检测输入扩频信号的同步前同步码数据的PN码模式与在接收端产生的参考PN码模式之间的相关性。 SAW卷积器的栅极长度短于前导码数据长度。 然而,可以通过计算来自SAW卷积器的相关输出和验证脉冲的逻辑乘法来获得真相关输出的装置。

    Synchronization pulse generator in spread spectrum communication system
    8.
    发明授权
    Synchronization pulse generator in spread spectrum communication system 失效
    扩频通信系统中的同步脉冲发生器

    公开(公告)号:US4860307A

    公开(公告)日:1989-08-22

    申请号:US106420

    申请日:1987-10-09

    IPC分类号: H04J13/00 H04B1/7073

    CPC分类号: H04B1/70712

    摘要: A synchronization pulse generator in a spectrum spread communication system includes first and second envelope detectors for subjecting a correlation output of a spectrum spread signal to envelope detection; a threshold value generator for generating a threshold value having a level corresponding to an output from the second envelope detector; and a comparator for comparing an output level of the first envelope detector with a threshold value generated by the threshold value generator, and outputting an initial synchronization pulse.

    摘要翻译: 频谱扩展通信系统中的同步脉冲发生器包括用于对频谱扩展信号的相关输出进行包络检测的第一和第二包络检测器; 阈值发生器,用于产生具有与来自第二包络检测器的输出相对应的电平的阈值; 以及比较器,用于将第一包络检测器的输出电平与由阈值发生器产生的阈值进行比较,并输出初始同步脉冲。

    Liquid container, cap used with the liquid container, and cap-equipped liquid container
    9.
    发明授权
    Liquid container, cap used with the liquid container, and cap-equipped liquid container 有权
    液体容器,与液体容器一起使用的盖子,以及带帽的液体容器

    公开(公告)号:US06623104B1

    公开(公告)日:2003-09-23

    申请号:US09678024

    申请日:2000-10-04

    IPC分类号: B41J214

    摘要: A liquid container includes a lever having one end supported to an outer wall of a housing containing a liquid therein and the other end as a free end, the lever being elastically deformable. The liquid container further includes a projection provided in an area of the housing which is opposite to and away from the supported one end of the lever, the projection covering at least a part of a space between the free end of the lever and the housing in the above area. By virtue of the projection, the lever can be protected against accidental external forces. In a cap-equipped liquid container, a straight line connecting a projected end of the projection of the liquid container and a distal end of a tab of a cap is set to cross a movable range of the lever provided on the liquid container in which the lever is allowed to angularly move with elastic deformation thereof. In a cap, an elastic sealing member for sealing off the surroundings of the supply port of the liquid container is provided on a bottom wall portion connecting first and second latch members to each other, and a part of the bottom wall portion is able to elastically deform upon application of an operating force.

    摘要翻译: 液体容器包括杠杆,该杆具有一端支撑在壳体的外壁上,该外壳包含液体,另一端作为自由端,该杆可弹性变形。 所述液体容器还包括设置在所述壳体的与所述杆的所述支撑的一端相对且远离所述支撑的一端的区域中的突出部,所述突起覆盖所述杠杆的自由端和所述壳体之间的空间的至少一部分 以上区域。 通过突出,杠杆可以防止意外的外力。 在配备有盖的液体容器中,连接液体容器的突出部的突出端和盖的突出部的直线被设置为与设置在液体容器上的液压容器的杠杆的可移动范围相交叉, 允许杠杆以其弹性变形成角度地移动。 在一个盖子中,一个用于密封液体容器的供应口周围的弹性密封件设置在彼此连接第一和第二闩锁构件的底壁部分上,并且底壁部分的一部分能够弹性地 在施加操作力时变形。