Abstract: The present invention relates to a self-steering device for a railway vehicle, which includes axles installed on a truck supporting a vehicle body of the railway vehicle, wheels, each of which is connected to the axle and has a wheel tread moving on a top surface of a rail and supporting a vertical load of the railway vehicle, and a wheel flange protruding from the wheel tread to prevent the railway vehicle from derailing and being in contact with a lateral surface of the rail during straight movement of the railway vehicle to form an interference section, and guide rollers, each of which is in rolling contact with a top surface edge or a lateral surface of the rail in front or to the rear of the wheel when the railway vehicle enters curved rails and supports a greater transverse load than the interference section. The guide rollers can be directly installed on the railway vehicle or at least one of the vehicle body, the truck, and the axle.

Abstract: The present invention relates to a self-steering device for a railway vehicle, which includes axles installed on a truck supporting a vehicle body of the railway vehicle, wheels, each of which is connected to the axle and has a wheel tread moving on a top surface of a rail and supporting a vertical load of the railway vehicle, and a wheel flange protruding from the wheel tread to prevent the railway vehicle from derailing and being in contact with a lateral surface of the rail during straight movement of the railway vehicle to form an interference section, and guide rollers, each of which is in rolling contact with a top surface edge or a lateral surface of the rail in front or to the rear of the wheel when the railway vehicle enters curved rails and supports a greater transverse load than the interference section. The guide rollers can be directly installed on the railway vehicle or at least one of the vehicle body, the truck, and the axle.

Abstract: The system for displaying huge images in accordance with the present invention comprises: a storage device (1) for storing image data winch is divided in either one of the row direction and the column direction and contains at least two subdivided blocks; a first temporary storage device (9) for sequentially reading out data stored in the storage device (1), temporarily storing data as read and, when the data reaches a predetermined unit of data size, outputting all the data as input. And the present invention serves to improve the processing speed of huge images by bypassing the main storage device (3) during the processing operation of image data.

Abstract: A high-definition image display apparatus displays a high-definition mega-sized image on a computer display. The display apparatus includes a server 1 and a client 5 that operate in a coordinated manner. The display system comprises means for storing an cage in the server 1 in the form of a set of image data for several levels of resolution each of which is obtained through division of the image into a matrix as well as through compression and encryption; and input means for enabling visual performance of operations for specifying an image to be displayed on the screen of the client 5, zooming in/out, and scrolling the image.