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    • 21. 发明申请
    • Mobile Asset Device Transmission Detection System and Method
    • 移动资产设备传输检测系统及方法
    • US20150072676A1
    • 2015-03-12
    • US14481290
    • 2014-09-09
    • Lawrence JordanMichael HeilmannLisa A. MattaMichael Schmidt
    • Lawrence JordanMichael HeilmannLisa A. MattaMichael Schmidt
    • H04W8/00G01S5/00H04W4/02
    • H04W4/021G01S5/0027G01S5/021G01S19/13G01S2205/002H04W4/046H04W4/44
    • This invention comprises a mobile asset cellular device transmission detector equipped, a wireless processing unit, an event recorder, and a digital video recorder. The wireless processing unit includes event recorder interface software, digital video recorder interface software that obtains data from the digital video recorder, Wi-Nav software that obtains data from the Wi-Nav, GPS software that obtains data from the GPS and geo-fence software. The cellular device transmission detector continually checks for cellular device transmissions within the mobile asset and if those transmissions were associated with an impact, rollover, operator action or geo-fence defined location or boundary. When a cellular device transmission was made, the wireless processing unit triggers an episode and sends event recorder information, GPS location and speed, audio and video recordings, and impact and rollover information to a back office.
    • 本发明包括一个移动资产蜂窝设备传输检测器,一个无线处理单元,一个事件记录器和一个数字录像机。 无线处理单元包括事件记录器接口软件,从数字录像机获取数据的数字录像机接口软件,从Wi-Nav获取数据的Wi-Nav软件,从GPS获取数据的GPS软件和地理围栏软件 。 蜂窝设备传输检测器连续地检查移动资产内的蜂窝设备传输,并且如果这些传输与冲击,翻转,操作者动作或地理围栏定义的位置或边界相关联。 当进行蜂窝设备传输时,无线处理单元触发一个事件并向后台发送事件记录器信息,GPS位置和速度,音频和视频记录以及影响和翻转信息。
    • 25. 发明授权
    • Braille erasure mechanism
    • 盲文擦除机制
    • US08602787B2
    • 2013-12-10
    • US12898651
    • 2010-10-05
    • Michael SchmidtJude Jonas
    • Michael SchmidtJude Jonas
    • G09B21/00
    • B41M3/16G09B21/02
    • An improved Braille erasure mechanism may comprise a reverse-embosser or impressing mechanism to imprint a negative Braille cell. A negative Braille cell is the reverse of a normal Braille cell, with one or more dots lowered or pressed into the printing medium in an opposite direction to the raised dots of a normal Braille cell. Because the dots of a negative Braille cell are lowered past the surface of the printing medium, they may be ordinarily undetectable to the fingers of a Braille user. Accordingly, by imprinting a full negative Braille cell on top of a Braille cell to be erased, all of the previously raised dots of the Braille cell may be lowered beyond the surface of the printing medium. Any further Braille cell embossed over the erased cell will be free from corruption, because any dot not used by the new cell will remain lowered and undetectable.
    • 改进的盲文擦除机构可以包括用于印记负盲文单元的反向压花机或压印机构。 负盲文单元与普通盲文单元相反,其中一个或多个点以与正常盲文单元的凸起点相反的方向降低或压入打印介质。 因为负盲孔单元的点被降低通过打印介质的表面,所以它们通常可能不能被盲文用户的手指检测到。 因此,通过将要消除的盲文单元的顶部上的全负的盲文单元压印,盲文单元的所有先前凸出的点都可以被降低到打印介质的表面之外。 在擦除的单元上浮雕的任何进一步的盲文单元将没有腐蚀,因为新单元未使用的任何点将保持降低和不可检测。
    • 30. 发明授权
    • Method and receiving unit for the detection of data symbols
    • 用于检测数据符号的方法和接收单元
    • US08223888B2
    • 2012-07-17
    • US11953007
    • 2007-12-07
    • Frank PoegelEric SachseMichael Schmidt
    • Frank PoegelEric SachseMichael Schmidt
    • H04L27/00
    • H04B1/707
    • A method and device is provided for the detection of data symbols contained in a received radio signal, whereby each data symbol is allocated transmit-side a symbol value-specific PN sequence of successive PN chips in the chip clock and the PN sequences allocated to the data symbols are offset QPSK modulated. The method of the invention for incoherent detection provides for converting the received radio signal into a complex baseband signal sampled in the chip clock, generating a demodulated signal by differential demodulation of the complex baseband signal sampled in the chip clock, providing the derived sequences, calculating correlation results by correlating the demodulated signal with the derived sequences, and deriving, i.e., detecting, the values of the data symbols by evaluating the correlation results. In this case, each derived sequence is assigned to a PN sequence allocable transmit-side and includes derived chips, whose values in each case correspond to a logic linking of particular PN chips of the PN sequence allocable transmit-side that is assigned the derived sequence. The invention relates furthermore to a corresponding receiving unit.
    • 提供了一种用于检测包含在接收的无线电信号中的数据符号的方法和装置,由此每个数据符号被分配给芯片时钟中的连续PN码元的符号值特定PN序列和分配给 数据符号被QPSK调制偏移。 用于非相干检测的本发明的方法提供了将接收的无线电信号转换成在芯片时钟采样的复基带信号,通过在芯片时钟采样的复基带信号的差分解调产生解调信号,提供导出的序列,计算 通过将解调信号与导出序列进行相关,以及通过评估相关结果推导出数据符号的值来检测相关结果。 在这种情况下,将每个派生序列分配给PN序列可分发发射侧,并且包括导出的码片,其值在每种情况下对应于分配了导出序列的PN序列可分发发射端的特定PN码片的逻辑链接 。 本发明还涉及相应的接收单元。