Patents Examined by Kenneth V Vanderpuye
  • Distortion compensating apparatus, optical receiving apparatus, and optical transmitting and receiving system
    Patent number: 8447190
    Abstract: A distortion compensating apparatus which compensates for distortion in a waveform of a received light signal through a digital signal processing includes a plurality of fixed amount compensators which compensate for the distortion in the waveform at respective given compensating amounts. The combination of operating states of the plurality of fixed amount compensators is changed by on/off switching of each of the plurality of fixed amount compensators, and the plurality of fixed amount compensators are cascaded.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: May 21, 2013
    Assignee: Fujitsu Limited
    Inventors: Takahito Tanimura, Takeshi Hoshida, Hisao Nakashima, Kazunari Shiota, Kiichi Sugitani