Selective Guide Number Patents (Class 396/68)
  • Optical line terminal capable of active bandwidth allocation for passive optical network system
    Patent number: 7889990
    Abstract: In a GPON system conforming to ITU-T Recommendations G.984.3, an optical line terminal is provided which has an active bandwidth allocation function that preferentially puts small bandwidth signals in a particular segment of a frame, e.g., at a head of the frame, to prevent fragmentations that may occur particularly when allocating small bandwidths of about 100 kbits/s.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: February 15, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Tohru Kazawa, Kenichi Sakamoto, Ryosuke Nishino
  • Photographing apparatus photographing method and computer program
    Patent number: 7522824
    Abstract: An image taking device (1), which takes an image of an object by focusing reflected light from the object on an image sensor (212), is provided with a distance measuring sensor (27) for measuring a distance between the object and the image taking device (1), and means for controlling exposure time of the image sensor (212) upon taking an image in accordance with a measurement result.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: April 21, 2009
    Assignee: Fujitsu Limited
    Inventors: Satoshi Fukui, Takayuki Sugiura, Atsushi Miki, Shuji Kimura, Kiyoshi Chinzei, Mieko Nakano, Naoyuki Fujimoto, Mitsuhiro Gotoh, Toshio Endoh, Takahiro Aoki, Mitsuaki Fukuda, Masaki Watanabe, Shigeru Sasaki