Abstract: A conveyor apparatus is provided. The conveyor apparatus includes a rail formed in a closed curve line, a chain conveyor that moves along the rail, a driver that drives the chain conveyor, and a first and a second variable conveyors that relatively vary lengths of at least two portions of the chain conveyor so that a section of the chain conveyor remains in position while other portions of the chain conveyor moving along the rail.

Abstract: A conveyor apparatus is provided. The conveyor apparatus includes a rail formed in a closed curve line, a chain conveyor that moves along the rail, a driver that drives the chain conveyor, and a first and a second variable conveyors that relatively vary lengths of at least two portions of the chain conveyor so that a section of the chain conveyor remains in position while other portions of the chain conveyor moving along the rail.

Abstract: A method of correcting a position of a prober, the method including obtaining a first image of a pad, the pad having a predetermined reference contact position, contacting the prober to the pad after obtaining the first image of the pad, obtaining a second image of the pad after contacting the prober to the pad, determining an actual contact position of an actual contact mark on the pad, the actual contact mark being produced by the contacting of the prober to the pad, comparing the second image to the first image to obtain an offset data, the offset data relating the actual contact position to the reference contact position, and correcting the position of the prober by aligning the actual contact position with the reference contact position based on the offset data.

Abstract: An automatic vision display apparatus has a flight object having a floating gas filled therein to fly, flying along a vertical wall surface and including a screen mounted at an opposite side to the vertical wall surface; a propulsion unit mounted at a predetermined position of the flight object and moving the flight object; a control unit mounted to the flight object and controlling the propulsion unit; a projector projecting an image on the screen of the flight object at a distance from the flight object; an adjusting unit adjusting an image projecting direction of the projector; and a main control unit controlling the projector to project the image and controlling the adjusting unit so that the projector tracks a movement of the flight object to project an image. According to the invention, it is possible to project an image while automatically tracking the screen of the flight object being flying.

Abstract: A method of correcting a position of a prober, the method including obtaining a first image of a pad, the pad having a predetermined reference contact position, contacting the prober to the pad after obtaining the first image of the pad, obtaining a second image of the pad after contacting the prober to the pad, determining an actual contact position of an actual contact mark on the pad, the actual contact mark being produced by the contacting of the prober to the pad, comparing the second image to the first image to obtain an offset data, the offset data relating the actual contact position to the reference contact position, and correcting the position of the prober by aligning the actual contact position with the reference contact position based on the offset data.

Abstract: An automatic vision display apparatus has a flight object having a floating gas filled therein to fly, flying along a vertical wall surface and including a screen mounted at an opposite side to the vertical wall surface; a propulsion unit mounted at a predetermined position of the flight object and moving the flight object; a control unit mounted to the flight object and controlling the propulsion unit; a projector projecting an image on the screen of the flight object at a distance from the flight object; an adjusting unit adjusting an image projecting direction of the projector; and a main control unit controlling the projector to project the image and controlling the adjusting unit so that the projector tracks a movement of the flight object to project an image. According to the invention, it is possible to project an image while automatically tracking the screen of the flight object being flying.