Patent ID: 6942335

Claim:
A hand held device that renders a digital image to a wall, ceiling, floor, or any smooth relatively flat surface, said device comprising: a. A communications port that accepts a digital image from an external source, said image to be rendered on said surface; b. A plurality of extruding and retracting tapes, whereby each said tape: i. Is associated with a single fixed reference point on said surface and a single fixed reference point on said device; ii. Extrudes and retracts relative to the movement of said device and kept taunt via a constant force mechanism; and iii. The extrusion and retraction of which is translated via an optomechanical sensor into the instantaneous distance between said fixed reference points. c. An array of print head elements that impart coloration on said surface; d. A computational unit that executes system software, whereby said software: i. Accepts said digital image via said communications port; ii. Maps said digital image to said surface; iii. Uses said distances reported by plurality of said optomechanical sensors to determine the absolute position of said print head elements with respect to the surface; and iv. Directs said print head elements to render the corresponding pixels of said image mapped to said surface.