Apparatus for making a series of stationary images visible to a moving observer
OwnerWilliam J. Spauldinginventor
Life of this patent
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Abstract
An apparatus for displaying a series of stationary images to form an animated display when seen from a moving subway train is presented. A series of image display panels are located along a length of subway track. These panels are momentarily illuminated each time a passing train window passes a predetermined point relative to the panel by means of a sensor device attached to each panel. The sensor device detects the presence of a nearby train window by means of a light signal received from each such window. The light signal may be derived either from a source associated with each window or from a reflector associated with each window reflecting light from a source attached to each stationary panel.
Claims22
An apparatus for displaying images for viewing from within a moving vehicle such as a subway train travelling in a darkened area including:
- a plurality of image display devices for placement at uniform height alongside the route of the vehicle for displaying images, each image display device comprising
- an image display area,
- image illumination means for momentarily illuminating the image display area,
- coded light signal source means for emitting a coded light signal in the direction of an adjacent window of the vehicle, and
- light detector means for detecting a desired reflection of the coded light signal from the vehicle and triggering the image illumination means;
- and
- light reflection means for mounting on the vehicle in relationship to at least one of the windows of the vehicle to reflect said coded light signal from said coded light signal source means of each of the plurality of image display devices to their associated light detector means;
- whereby continuous images are perceived by an observer from within the moving vehicle.
An apparatus for displaying images for viewing from within a moving vehicle such as a subway train travelling in a darkened area including:
- coded light signal source means for mounting on the vehicle in relationship to at least one of the windows of the vehicle to emit a coded light signal generally perpendicularly away from the vehicle;
- and
- a plurality of image display devices for placement at uniform height alongside the route of the vehicle for displaying images, each image display device comprising;
- an image display area,
- image illumination means for momentarily illuminating the image display area, and
- light detector means for detecting said coded light signal from the vehicle and triggering said image illumination means;
- whereby continuous images are perceived by an observer from within the moving vehicle.
Dependencies are inferred from the claim text.