AN OPTICAL ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (O-OFDM) SYSTEM WITH PULSE-WIDTH MODULATION (PWM) DIMMING
    1.
    发明公开
    AN OPTICAL ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (O-OFDM) SYSTEM WITH PULSE-WIDTH MODULATION (PWM) DIMMING 审中-公开
    OPTISCHES ORTHOGONALES FREQUENZMULTIPLEX(O-OFDM)-SYSTEM MIT PULSWEITENMODULATION(PWM)-DIMMUNG

    公开(公告)号:EP3014798A4

    公开(公告)日:2017-03-22

    申请号:EP14847891

    申请日:2014-06-24

    申请人: UNIV BOSTON

    摘要: An optical orthogonal frequency division multiplexing (O-OFDM) system with pulse-width modulation (PWM) dimming includes a driver responsive to one or more predetermined dimming set points configured to generate PWM signals having a predetermined duty cycle and configured to supply current to one or more light emitting diodes (LEDs). An O-OFDM generator responsive to the one or more predetermined dimming set points and digital data is configured to generate digital inverted O-OFDM signals during on-states of the PWM signals and non-inverted O-OFDM signals during off-states of the PWM signals according to the predetermined duty cycle and convert the digital inverted O-OFDM signals and the digital non-inverted O-OFDM signals to analog output O-OFDM signals. A combiner circuit responsive to the current from the driver and the analog output O-OFDM signals is configured such that the analog output O-OFDM signals modulate the current to the one or more LEDs to provide a high capacity visible light communication link

    摘要翻译: 具有脉冲宽度调制(PWM)调光的光学正交频分复用(O-OFDM)系统包括响应于一个或多个预定调光设定点的驱动器,其被配置为产生具有预定占空比的PWM信号,并且被配置为将电流提供给一个 或更多的发光二极管(LED)。 响应于所述一个或多个预定调光设定点和数字数据的O-OFDM发生器被配置为在所述PWM信号和非反相O-OFDM信号的导通状态期间在所述PWM信号和非反相O-OFDM信号的关闭状态期间产生数字反相O-OFDM信号 根据预定占空比的PWM信号,并将数字反相O-OFDM信号和数字非反相O-OFDM信号转换为模拟输出O-OFDM信号。 响应于来自驱动器的电流和模拟输出O-OFDM信号的组合器电路被配置为使得模拟输出O-OFDM信号调制到一个或多个LED的电流以提供高容量可见光通信链路

    SYSTEM FOR ASSESSING THE EFFICACY OF STORED RED BLOOD CELLS USING MICROVASCULAR NETWORKS
    6.
    发明公开
    SYSTEM FOR ASSESSING THE EFFICACY OF STORED RED BLOOD CELLS USING MICROVASCULAR NETWORKS 审中-公开
    系统进行测试RECORDED红细胞使用微血管网络的有效性

    公开(公告)号:EP2419862A4

    公开(公告)日:2013-10-09

    申请号:EP10765101

    申请日:2010-04-14

    申请人: UNIV BOSTON

    IPC分类号: G06K9/00

    摘要: A system for assessing the microvascular fitness of a sample of stored red blood cells. The system has a network device having at least one network unit. The network unit has a single inlet and a single outlet for the sample and a plurality of microchannels. The plurality of microchannels receive the sample from the single inlet and drain the sample into the single outlet. The network unit includes an aspiration pressure means for providing movement of liquid sample through the at least one network unit. The system further includes an analysis unit that receives the network device therein. The analysis unit includes a sensor for capturing measurements related to the sample and a processor capable of comparing the captured measurements to measurements stored in a database of healthy red blood cells to determine the microvascular fitness of the stored red blood cells.