Projection system and components

Abstract

A system including a plurality of pixels disposed on a substrate forming a screen. A signal, such as an image, can be projected on the screen. The pixels of the screen include a sensor configured to sense a portion of the signal, an emitter, and circuitry. In response to information sensed in the signal, the circuitry can be configured to drive the emitter.

What is claimed is: 
     
         1 . A projector, comprising:
 a source configured to generate a carrier;   a spatial modulator disposed to modulate the carrier; and   a controller configured to cause the spatial modulator to spatially modulate the carrier to encode an image and additional information.   
     
     
         2 . The projector of  claim 1 , wherein the controller is configured to encode data associated with the projector in the modulated carrier. 
     
     
         3 . The projector of  claim 1 , wherein the spatial modulator is configured to encode colors of the image in separate channels of the modulated carrier. 
     
     
         4 . The projector of  claim 3 , wherein the source is configured to emit light that is substantially monochromatic. 
     
     
         5 . The projector of  claim 1 , wherein the spatial modulator is configured to encode a data channel in at least one channel of the modulated carrier. 
     
     
         6 . The projector of  claim 1 , wherein:
 the source is configured to emit light having a substantially invisible spectrum.   
     
     
         7 . A tangible computer readable medium storing code that, when executed on a computer, causes a projector to:
 spatially modulate a carrier; and   encode an image and additional information on the carrier.   
     
     
         8 . The tangible computer readable medium of  claim 7 , further storing code that, when executed by the computer, causes the projector to encode data associated with the projector in the modulated carrier. 
     
     
         9 . The tangible computer readable medium of  claim 7 , further storing code that, when executed by the computer, causes the projector to encode colors of the image in separate channels of the modulated carrier. 
     
     
         10 . The tangible computer readable medium of  claim 9 , further storing code that, when executed by the computer, causes the projector to emit light that is substantially monochromatic. 
     
     
         11 . The tangible computer readable medium of  claim 7 , further storing code that, when executed by the computer, causes the projector to encode a data channel in at least one channel of the modulated carrier.