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    • 9. 发明申请
    • AMPLIFIER CIRCUIT AND RECEIVER USING THE SAME
    • 使用放大器电路和接收器
    • US20100321114A1
    • 2010-12-23
    • US12918419
    • 2009-02-24
    • Eiji OkadaDaisuke NishimuraHiroaki OzekiNoriaki SaitoSusumu Fukushima
    • Eiji OkadaDaisuke NishimuraHiroaki OzekiNoriaki SaitoSusumu Fukushima
    • H03G3/30
    • H03G3/3068H03G3/3078
    • An amplifier circuit includes a variable gain amplifier that amplifies and outputs a signal from an output port, a controller operable to change an gain of the variable gain amplifier, a mixer that mixes the signal output from the output port of the variable gain amplifier with a local oscillating signal to heterodyne the signal and outputs the heterodyned signal, a filter that outputs a signal component having a predetermined frequency out of the signal output from the mixer, and a detector that detects a power level based on power of the signal output from the filter. The controller is operable to change the gain according to the first power level such that a quality level representing quality of the signal output from the filter becomes a target quality level immediately after the gain is changed. The amplifier circuit can have small power consumption.
    • 放大器电路包括放大并输出来自输出端口的信号的可变增益放大器,可操作以改变可变增益放大器的增益的控制器,将从可变增益放大器的输出端口输出的信号与 本地振荡信号外差信号并输出​​外差信号;滤波器,其输出从混频器输出的信号中具有预定频率的信号分量;以及检测器,其基于从所述混频器输出的信号的功率来检测功率电平 过滤。 控制器可操作以根据第一功率电平改变增益,使得表示从滤波器输出的信号的质量的质量水平在增益改变之后立即成为目标质量水平。 放大器电路可以具有较小的功耗。
    • 10. 发明授权
    • Autonomous vehicle and planar obstacle recognition method
    • 自主车辆和平面障碍物识别方法
    • US07742841B2
    • 2010-06-22
    • US11813964
    • 2006-02-23
    • Tatsu SakaiDaisuke Nishimura
    • Tatsu SakaiDaisuke Nishimura
    • G05D1/02
    • G05D1/0274G05D1/024G05D1/0255G05D1/0257G05D2201/0216G06T7/73
    • In an autonomous vehicle, position of a planar obstacle such as a wall or a fence having apertures is determined. A horizontal plane is scanned with a laser range tinder so as to acquire positional coordinates of a plurality of scanning points. An element vector is formed with each two scanning points so that one acquired former is used as a start point and the other acquired later as an end point of the vector. A plurality of continuous element vectors which satisfy predetermined conditions is selected among the element vectors, and a scanning segment vector is formed by composition of the selected element vectors. When a length of the scanning segment vector is equal to or longer than a predetermined length, it is possible to recognize that a planar obstacle exists along the scanning segment vector.
    • 在自主车辆中,确定具有孔的诸如墙壁或围栏的平面障碍物的位置。 用激光测距仪扫描水平面,以获取多个扫描点的位置坐标。 每个两个扫描点形成一个元素向量,使得一个获取的前者被用作起始点,另一个被作为向量的终点获得。 在元素向量中选择满足预定条件的多个连续元素向量,并且通过组合所选择的元素向量来形成扫描段向量。 当扫描段向量的长度等于或长于预定长度时,可以认识到沿着扫描段向量存在平面障碍物。