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    • 1. 发明申请
    • Apparatus method for monitoring the I-Q phase bias in an I-Q quadrature modulation transmitter
    • 用于监测I-Q正交调制发射机中的I-Q相位偏置的装置方法
    • US20070230617A1
    • 2007-10-04
    • US11723938
    • 2007-03-22
    • Zhenning TaoJens Rasmussen
    • Zhenning TaoJens Rasmussen
    • H04L27/12
    • H04L27/364G02F1/0123G02F1/2255H04B10/5561
    • An apparatus and a method for a I-Q quadrature modulation transmitter monitor a phase bias between an I branch and a Q branch of the I-Q quadrature modulation transmitter. The I-Q quadrature modulation transmitter includes the I-branch, the Q-branch equipped with a phase bias, and a tap. The apparatus is installed between the tap and the phase bias, and monitors the phase between the I branch and the Q branch which phase is introduced by the phase bias. The apparatus includes the following components: a module squarer, receiving signal from the tap and outputting a module square of the received signal; a multiplier, to multiplying data of the I-branch, data of the Q-branch and the module square to output a multiplied signal; and an averager, averaging the multiplied signal output by the multiplier. The phase between the I branch and the Q branch may be corrected according to monitoring results.
    • 用于I-Q正交调制发射机的装置和方法监视I-Q正交调制发射机的I分支和Q分支之间的相位偏置。 I-Q正交调制发射机包括I分支,配备有相位偏置的Q分支和抽头。 该装置安装在抽头和相位偏置之间,并监视I相和Q分支之间的相位,该相位由相位偏置引入。 该装置包括以下组件:模块平方器,从抽头接收信号并输出​​接收信号的平方; 乘法器,用于将I分支的数据,Q分支的数据和模块平方相乘以输出相乘的信号; 和平均器,对乘法器输出的相乘信号进行平均。 I分支和Q分支之间的相位可以根据监测结果进行校正。
    • 3. 发明授权
    • Polarization-multiplexing optical transmitter polarization-multiplexing optical receiver, polarization-multiplexing optical transceiving system, and controlling method thereof
    • 偏振复用光发射机偏振复用光接收机,偏振复用光收发系统及其控制方法
    • US08244138B2
    • 2012-08-14
    • US12071984
    • 2008-02-28
    • Takeshi HoshidaJens Rasmussen
    • Takeshi HoshidaJens Rasmussen
    • H04B10/00
    • H04J14/06H04B10/532
    • By using low-frequency signals, an optical transmitting unit modulates one of a wavelength, a transmission timing, and an intensity of light as a carrier wave. A polarization multiplexer synthesizes the output light signals, modulated by the optical transmitting unit, in polarization states orthogonal to each other and generates polarization-multiplexing signals. A polarization splitter splits by extracting two orthogonal polarization components from the polarization-multiplexing signals. The polarization states of the polarization-multiplexing signals are controlled by a polarization controller in an optical receiving unit. A band-pass filter extracts components transmitting through passbands from output signals of the optical receiving unit and outputs an intensity of the components. Based on the intensity output from the filter, a controlling circuit generates feedback control signals for maximizing a ratio of the components of the low-frequency signals and by using the feedback control signals, the polarization controller controls the polarization states of the optical multiplexing signals.
    • 通过使用低频信号,光发送单元调制作为载波的波长,发送定时和光强度中的一个。 偏振复用器以由彼此正交的极化状态合成由光发射单元调制的输出光信号,并产生偏振复用信号。 偏振分离器通过从偏振复用信号中提取两个正交偏振分量来分离。 偏振复用信号的偏振状态由光接收单元中的偏振控制器控制。 带通滤波器提取从光接收单元的输出信号通过通带传输的分量,并输出分量的强度。 基于来自滤波器的强度输出,控制电路产生用于使低频信号的分量的比率最大化的反馈控制信号,并且通过使用反馈控制信号,偏振控制器控制光复用信号的偏振状态。
    • 4. 发明授权
    • Polarization controlling apparatus and polarization operation apparatus
    • 极化控制装置和极化操作装置
    • US07535616B2
    • 2009-05-19
    • US11529347
    • 2006-09-29
    • Kazuo HironishiNobuhiro FukushimaJens Rasmussen
    • Kazuo HironishiNobuhiro FukushimaJens Rasmussen
    • G02F1/09
    • G02F1/0136G02F1/09G02F2001/0139G02F2201/17
    • A polarization controlling apparatus includes a permanent magnet itself or a permanent magnet to which a part capable of being magnetized is applied, an electromagnet capable of changing the magnitude of a magnetic field to be generated thereby, and a Faraday rotation effect element. The Faraday rotation effect element is disposed at a position at which an interaction magnetic field acts on the Faraday rotation effect element. The interaction magnetic field is produced by an interaction between a magnetic field generated by the permanent magnet and a magnetic field generated by the electromagnet. The Faraday rotation effect element thereby produces a Faraday rotation effect on inputted light. The magnitude of the interaction magnetic field in the Faraday rotation effect element is varied by a magnetic field component generated by the electromagnet to vary the amount of the Faraday rotation effect to be had on the inputted light.
    • 偏振控制装置包括永久磁体本身或永磁体,能够被磁化的部分被施加到其上,能够改变由此产生的磁场的大小的电磁体和法拉第旋转效应元件。 法拉第旋转效应元件设置在相互作用的磁场作用在法拉第旋转效应元件上的位置。 相互作用磁场是由永磁体产生的磁场与由电磁体产生的磁场之间的相互作用产生的。 法拉第旋转效应元件因此对输入的光产生法拉第旋转效应。 法拉第旋转效应元件中的相互作用磁场的大小由电磁体产生的磁场分量变化,以改变对输入光的法拉第旋转效应的量。
    • 9. 发明申请
    • Method and apparatus for customizing travel directions
    • 定制行车路线的方法和装置
    • US20060064241A1
    • 2006-03-23
    • US11009163
    • 2004-12-08
    • Jens RasmussenLars Rasmussen
    • Jens RasmussenLars Rasmussen
    • G01C21/36
    • G01C21/3641
    • Various methods, systems, and apparatuses for customizing travel actions in travel directions are disclosed. One method and apparatus includes providing a first set of travel directions to a user, the travel directions including at least one travel action, receiving at least one selected travel action and a replacement travel action from the user associated with the first set of travel directions, and outputting a second set of travel directions associated with the at least one selected travel action and the replacement travel action. Another method and apparatus includes obtaining travel directions based on a start point and an end point, comparing travel actions from the travel directions with a customization file, the customization file including at least one selected travel action and a replacement travel action, determining that at least one travel action in the travel directions is the same as the at least one selected travel action, and integrating the replacement travel action into the travel directions.
    • 公开了用于在行进方向上定制行驶动作的各种方法,系统和装置。 一种方法和装置包括向用户提供第一组行进方向,行驶方向包括至少一个行驶动作,从与第一组行驶方向相关联的用户接收至少一个所选择的行驶动作和替换行驶动作, 以及输出与所述至少一个选择的行驶动作和所述替换行驶动作相关联的第二组旅行方向。 另一种方法和装置包括基于起始点和终点获取旅行方向,将来自旅行方向的旅行行为与定制文件进行比较,所述定制文件包括至少一个所选择的旅行行为和替换旅行行动,至少确定 行驶方向上的一个行驶动作与至少一个所选择的行驶动作相同,并且将更换行驶动作整合到行驶方向。