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    • 2. 发明申请
    • METHOD, APPARATUS AND SYSTEM FOR DETERMINING VOLTAGE STANDING WAVE RATIO IN DOWNLINK PERIOD OF RADIO COMMUNICATION
    • 用于确定无线电通信下行电压阶段的电压波动比的方法,装置和系统
    • WO2012145866A1
    • 2012-11-01
    • PCT/CN2011/000759
    • 2011-04-29
    • TELEFONAKTIEBOLAGET L M ERICSSON (publ)GAO, XiangLI, Yazhuo
    • GAO, XiangLI, Yazhuo
    • H04B7/00G01R27/06
    • H04W24/08G01R27/06H04B17/103
    • The present invention discloses a method for determining a Voltage Standing Wave Ratio (VSWR) in downlink period of a radio communication, comprising: coupling a forward signal into a Transmitter Observation Receiver (TOR) via a Radio Frequency (RF) switch; feeding a reversed signal in a reversed path from a third port of a circulator into the TOR via the RF switch; making down conversion, filtering and converting the forward signal and the reversed signal from an analog signal into digital baseband signal respectively; measuring and storing power levels of the forward signal and the reversed signal in form of digital baseband; and calculating VSWR or Return Loss (RL) value from the stored power levels of the forward signal and the reversed signal. A corresponding apparatus and radio communication system are also provided. This provides an improved VSWR detection method with low complexity and low cost, etc.
    • 本发明公开了一种在无线电通信的下行链路周期中确定电压驻波比(VSWR)的方法,包括:通过射频(RF)开关将前向信号耦合到发射机观测接收机(TOR); 在从循环器的第三端口经由RF开关到TOR的反向路径中馈送反向信号; 分别将正向信号和反相信号从模拟信号转换,滤波和转换成数字基带信号; 以数字基带的形式测量和存储正向信号和反相信号的功率电平; 以及从正向信号和反转信号的存储功率电平计算VSWR或回波损耗(RL)值。 还提供了相应的装置和无线电通信系统。 这提供了一种具有低复杂度和低成本等的改进的VSWR检测方法。
    • 4. 发明申请
    • PRINTHEAD WIPING SYSTEM
    • PRINTHEAD WIPING系统
    • WO2011109853A1
    • 2011-09-15
    • PCT/AU2010/000265
    • 2010-03-08
    • SILVERBROOK RESEARCH PTY LTDKARPPINEN, VesaLI, YazhuoLOUIS, Gerard
    • KARPPINEN, VesaLI, YazhuoLOUIS, Gerard
    • B41J2/165
    • B41J2/16585B41J2/16535B41J2/16552
    • A maintenance system for maintaining a stationary printhead is disclosed. The maintenance system includes a porous wiper element movable longitudinally past the printhead. The wiper element contacts the printhead during movement in at least one direction of longitudinal movement. A pump is included for pumping liquid into the wiper element. A rotating means is included for spinning the wiper element to thereby spin liquid and contaminants from the wiper element. By spinning the wiper element the wetness thereof is reset to a known condition. Advantageously the wetness of the wiper element is then set to a desired level by controlling the amount of liquid pumped by the pump into the wiper element. In order to clean the wiper element, the wiper element is saturated with liquid before spinning the wiper element again, followed by another spinning operation. Other levels of wetness include a level for rehydrating the printhead, and another level for wiping the printhead.
    • 公开了维护固定打印头的维护系统。 维护系统包括可沿着打印头纵向移动的多孔擦拭器元件。 擦拭器元件在纵向运动的至少一个方向的运动期间接触打印头。 包括用于将液体泵入刮水器元件的泵。 包括旋转装置以旋转擦拭器元件,从而从擦拭器元件旋转液体和污染物。 通过旋转刮水器元件,其湿度被重新设定为已知状态。 有利的是,通过控制泵抽入刮水器元件的液体量,将刮水器元件的湿度设定到所需的水平。 为了清洁刮水器元件,在再次旋转刮水器元件之前,擦拭器元件被液体饱和,接着进行另一个旋转操作。 其他湿度水平包括用于再水化打印头的水平,以及擦拭打印头的另一个水平。