Patent ID: 7193631

Claim:
A method of preparing an image for display, said image comprising at least two layers, including a light restricting silhouette layer comprising an arrangement of light restricting areas which subdivides the display into a plurality of discrete light restricting areas and/or a plurality of discrete transparent or translucent areas, and at least one design layer having at least one color which subdivides the display into a plurality of discrete colored areas and/or a plurality of discrete transparent or translucent areas, wherein the said colored areas do not substantially encroach onto the plurality of discrete transparent or translucent areas of light restricting silhouette layer, said at least one design layer being visible from one side of said display and substantially less visible from the other side, said display as a whole being substantially transparent or translucent, the method comprising the steps of: 1. using a computer for: providing at least a definition of said design to a computer; and generating a computerized version of said design with the computer; and further comprising the step of: 2. computing data defining said design layer from said computerized version of the design by subdividing said computerized version of the design into said plurality of discrete colored areas and/or a plurality of discrete transparent or translucent areas.