The actual patent abstract reads :<p><i>A three-dimensional display system provides a projection screen having a predetermined angularly-responsive reflective surface function. Three-dimensional images are respectively modulated in coordination with the predetermined angularly-responsive reflective surface function to define a programmable mirror with a programmable deflection angle.</i><p>It can be found here:<p><a href="http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/PTO/search-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=7,843,449.PN.&OS=PN/7,843,449&RS=PN/7,843,449" rel="nofollow">http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sec...</a>