会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 33. 发明授权
    • Method for frame and frequency synchronization of an OFDM signal and method for transmitting an OFDM signal
    • 用于OFDM信号的帧和频率同步的方法以及用于发送OFDM信号的方法
    • US07339882B2
    • 2008-03-04
    • US10473631
    • 2002-03-15
    • Wolfgang SchaeferChristian Hansen
    • Wolfgang SchaeferChristian Hansen
    • H04J11/00
    • H04L1/0056H04L1/0071H04L27/2656H04L27/2657H04L27/2675
    • A method for frame and frequency synchronization of an OFDM signal and a signal for transmitting an OFDM signal is described, the purpose of which is to impress a pilot phase profile that is then used at the receiving end for frame and frequency synchronization on pilots which are already contained in the OFDM signal for channel estimation. This has the advantage that no additional transmission capacity has to be used for the synchronization. The method according to the present invention is initiated by a rough time synchronization unit connected upline, which searches for the beginning of the guard interval in the OFDM signal. The comparison between a stored pilot phase profile and the received subcarrier symbol is performed using a cross-correlation, whose result is then evaluated to determine the frame and frequency synchronization.
    • 描述了一种用于OFDM信号的帧和频率同步的方法和用于发送OFDM信号的信号的方法,其目的是在导频上施加导频相位分布,该导频相位分布在接收端被用于帧和频率同步, 已经包含在OFDM信号中用于信道估计。 这具有不需要用于同步的附加传输容量的优点。 根据本发明的方法由连续上行的粗略的时间同步单元启动,其在OFDM信号中搜索保护间隔的开始。 使用互相关来执行存储的导频相位轮廓和接收的副载波符号之间的比较,然后对其结果进行评估以确定帧和频率同步。
    • 38. 发明授权
    • Measuring device for contactless detection of a rotational angle
    • 用于非接触式检测旋转角度的测量装置
    • US06396260B1
    • 2002-05-28
    • US09555487
    • 2000-07-24
    • Asta ReichlWolfgang SchaeferReiner SchweinfurthMichael StoeveThomas KlotzbuecherStephan Wuensch
    • Asta ReichlWolfgang SchaeferReiner SchweinfurthMichael StoeveThomas KlotzbuecherStephan Wuensch
    • G01B730
    • G01D5/145
    • A measuring device for contactless detection of a rotational angle (&agr;) comprises a carrier plate (12), made of soft-magnetic material, which acts as a rotor. Two segments (15, 16) separated by a slit (17) are disposed in a plane parallel to the carrier plate (12). Disposed on one of the segments (16) is a short-circuit piece (20), and all these parts are of soft-magnetic material. The short-circuit piece (20) and the segments (15, 16) serve to guide the magnetic flux that is generated by a permanent magnet (13) disposed on the carrier plate (12). Since the short-circuit piece (20) protrudes past the carrier plate (12), or in a further feature the carrier plate (12) protrudes past the short-circuit piece (20), insensitivity to axial or radial play is possible. Furthermore, the measuring device is relatively simple and space-saving in design.
    • 用于非接触式检测旋转角度(α)的测量装置包括用作转子的由软磁材料制成的承载板(12)。 由狭缝(17)分开的两个段(15,16)设置在平行于载板(12)的平面中。 设置在其中一个段(16)上的是短路片(20),所有这些部分都是软磁材料。 短路片(20)和片段(15,16)用于引导由设置在载体板(12)上的永磁体(13)产生的磁通量。 由于短路片(20)突出穿过承载板(12),或者在承载板(12)的另一特征中突出穿过短路片(20),对轴向或径向游隙的不敏感性是可能的。 此外,测量装置设计相对简单,节省空间。
    • 40. 发明授权
    • Method and apparatus for measurement of the fluorescence relaxation
period of a fluorescent substance
    • 用于测量荧光物质的荧光松弛期的方法和装置
    • US5043585A
    • 1991-08-27
    • US460521
    • 1990-01-03
    • Gustav FehrenbachWolfgang Schaefer
    • Gustav FehrenbachWolfgang Schaefer
    • G01K11/32G01N21/64
    • G01N21/6408G01K11/3213
    • The subject of the present invention consists of a method and an apparatus for measurement of the fluorescence relaxation period of the radiation of a fluorescent substance whose fluorescence relaxation period is a function of at least one physical parameter. The fluorescence radiation is fed back to the output radiation in a regulating circuit, whose regulating parameter is a parameter for the physical parameter. This is accomplished by advancing the fluorescence radiation to a photoelectric receiver whose output signals are supplied to a voltage controlled oscillator following phase-sensitive rectification and integration. The fluorescence radiation is alternately phase-sensitively rectified only during the relaxation phase. The total durations of the different rectification periods in the two directions are identical. The alternatingly rectified signals are integrated.
    • 本发明的主题包括用于测量荧光松弛期是至少一个物理参数的函数的荧光物质的辐射的荧光松弛期的方法和装置。 荧光辐射在调节电路中反馈到输出辐射,其调节参数是物理参数的参数。 这是通过将荧光辐射推进到光电接收器来实现的,该光电接收器的输出信号在相敏整流和积分之后提供给压控振荡器。 荧光辐射仅在弛豫阶段相互敏感地纠正。 两个方向不同整流期间的总持续时间相同。 交替整流的信号被集成。