Abstract: A visual information system includes an array of light emitting elements located at the side of a train track. The elements are individually energizable by a controller in response to a predetermined program stored in a memory and representative of a predetermined visual image. The controller causes selected elements to be turned ON and OFF, some repetitively, in a predetermined sequence as dictated by the program with a time span of 0.015 seconds. A sensor activates the controller upon the approach of a train so that a passenger gazing at the array as the train passes will perceive the image apparently extending over an area substantially greater than the area of said array.
Type:
Grant
Filed:
September 14, 1998
Date of Patent:
January 2, 2001
Assignee:
Adflash Limited
Inventors:
Guy Edward John Margetson, Thomas Andrew Hedges, Roy Wyatt