Patents Assigned to Harmony Co., Ltd.
  • Controller for shutting apparatus
    Patent number: 6646399
    Abstract: A controller for a shutter moved between an opened position and a closed position. A plurality of location ranges is defined between the opened position and the closed position. The controller detects the current moving speed of the shutter in each range, compares the moving speed with a predetermined reference speed, and generates a stop signal based on the comparison result to stop the movement of the drive mechanism.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: November 11, 2003
    Assignee: Harmony Co., Ltd.
    Inventor: Tetsuo Kitamura