Patents Assigned to Nisus Video, Inc.
  • Shutter mechanism for a video tape camera
    Patent number: 4643548
    Abstract: A focal plane shutter for a video camera has a pair of disks rotated in the same direction about a common axis in synchronism with the raster scan blanking interval. The disks each have one or more openings which overlie one another to define a light admitting shutter aperture positioned to illuminate the video pickup device. The opening in at least one of the disks is counterbalanced during rotation by a recessed relief area which does not extend through the disk, or by a weighted plate attached to the disk.
    Type: Grant
    Filed: July 3, 1985
    Date of Patent: February 17, 1987
    Assignee: Nisus Video, Inc.
    Inventor: Steven L. Swinehart