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Camera platform stabilizing systems

  • US 7,854,555 B2
  • Filed: 08/09/2007
  • Issued: 12/21/2010
  • Est. Priority Date: 03/01/2004
  • Status: Active Grant
First Claim
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1. A camera crane comprising:

  • a telescopically extendible arm having a front end and a back end;

    a camera platform supported at the front end of the arm;

    a mechanical leveling system linked to the camera platform, to keep the camera platform in a substantially horizontal position,a counter weight moveable along the arm from a first position adjacent to the back end of the arm to a second position between the back end and the front end of the arm;

    at least one actuator on the arm, for telescopically extending and retracting the arm; and

    a camera platform stabilizing system including a first sensor for sensing the elevation angle of the arm, a second sensor on the camera platform for sensing the angular position of the camera platform, first and second electric motors driving the camera platform, and a controller electrically connected to the first and second sensors, and to the first and second motors, and with the controller providing a positive preload to the first motor and a negative preload to the second motor, and with the controller controlling the motors to maintain the camera platform in a stabilized position.

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