Patent ID: 8077155

Claim:
A computer sketch pad and stylus for use with an existing notebook computer, comprising: a. at least one sketch pad, each said sketch pad having a top surface and a bottom surface; b. stylus-cooperating indicia on the top surface of said at least one sketch pad; c. attachement means for attaching said stylus-cooperating indicia to said existing notebook computer such that said stylus-cooperating indicia is visible at least when said existing notebook computer is in use; d. an optical stylus comprising at least one camera oriented for optically detecting said stylus-cooperating indicia, and said optical stylus additionally comprising transmitting means for transmitting data derived from its optical detections to said existing notebook computer; wherein said attachment means comprises an adhesive affixed to said bottom surface of said sketch pad and said sketch pad is provided with a separable membrane protecting said adhesive.