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    • 42. 发明授权
    • Communication using spread spectrum methods over optical fibers
    • 在光纤上使用扩频方法进行通信
    • US06922431B1
    • 2005-07-26
    • US09126897
    • 1998-07-31
    • Paul WeberPer-Olov Granestrand
    • Jean-Pierre Weber
    • H04B10/50H04J13/02H04J14/00H04J14/02H04J14/04H04J14/06H04B1/69
    • H04J14/0298H04B10/504H04J14/005
    • In a fiberoptical network, for example in a LAN, spread spectrum modulation is used, for example, CDMA, by providing an electrical digital data signal to a spreading device including a multiplier also receiving the spreading code. Then a modulation is made of the spread signal at radio frequencies, the signal being multiplied by a subcarrier wave generated in a oscillator, whereby the data signal is carried on an RF subcarrier. A control channel signal from a control unit is added to the modulated signal, so that the control signal will be located in the baseband. The added signal is converted to an optical signal transmitted on an output fiber. The control channel signal can be TDMA-modulated using collision detection. Making spectrum spreading in the electrical domain allows the use of standard components developed for example for mobile telephone systems. No wavelength control and no optical filters are necessary, which allows a low cost system to be constructed. Alternatively, the spreadspectrum data signal can be located in the baseband and the control channel on a subcarrier or both the data and the control channel can be put on subcarriers.
    • 在光纤网络中,例如在LAN中,通过向包括也接收扩展码的乘法器的扩展设备提供电数字数据信号,使用扩频调制,例如CDMA。 然后对无线电频率上的扩展信号进行调制,该信号乘以在振荡器中产生的副载波,由此数据信号被携带在RF子载波上。 来自控制单元的控制信道信号被添加到调制信号,使得控制信号将位于基带中。 所附加的信号被转换成在输出光纤上传输的光信号。 控制信道信号可以使用碰撞检测进行TDMA调制。 在电域中进行频谱扩展允许使用例如为移动电话系统开发的标准组件。 不需要波长控制和光学滤波器,这样可以构建低成本的系统。 或者,扩展频谱数据信号可以位于基带中,并且子载波上的控制信道或数据和控制信道两者都可以放在子载波上。
    • 44. 发明授权
    • Process and device for determining three-dimensional structure in the
submicron range
    • 用于确定亚微米范围内的三维结构的方法和装置
    • US5910660A
    • 1999-06-08
    • US913485
    • 1997-09-17
    • Walter HodelValerio RomanoHeinz Paul Weber
    • Walter HodelValerio RomanoHeinz Paul Weber
    • G01B9/04G01B9/023G01B11/24G01B11/245G01N21/27G01N21/45G02B21/18
    • G01B11/2441G01B9/023
    • A device and method for defining a three-dimensional structure of an object having a submicrometer size splits a coherent electromagnetic radiation beam into two partial beams including a first partial beam and a second partial beam. The first partial beam is focused on the object. The first partial beam is reflected from or dispersed from the object to yield a first radiation directed toward a locus. The second partial beam is directed toward the locus. The first radiation and the second radiation form an electromagnetic combination in a region of the locus. Second phase values are established from the initial phase values via multiplication of the initial phase values by one or more predetermined values to provide information for generating a magnified image representative of the object.
    • PCT No.PCT / CH96 / 00078 Sec。 371日期1997年9月17日 102(e)1997年9月17日PCT PCT 1996年3月6日PCT公布。 公开号WO96 / 29570 日期1996年9月26日用于定义具有亚微米尺寸的物体的三维结构的装置和方法将相干电磁辐射束分成包括第一部分光束和第二部分光束的两个部分光束。 第一部分光束聚焦在物体上。 第一部分光束从物体反射或分散,以产生朝向轨迹的第一辐射。 第二部分光束指向轨迹。 第一辐射和第二辐射在该场所的区域中形成电磁组合。 通过将初始相位值乘以一个或多个预定值,从初始相位值建立第二相位值,以提供用于生成代表对象的放大图像的信息。