Patent ID: 8094325

Claim:
An interactive system comprising: a printed substrate having coded data disposed thereon; and an electronic pen for interacting with the substrate, said pen comprising: an infrared light source for illuminating an area of the substrate; an image sensor for sensing at least some of the coded data illuminated in said area when the pen is used to interact with the substrate; a cartridge having a nib for contacting said substrate; a retraction mechanism for slidably moving said cartridge between a retracted position wherein said nib is retracted within a body of said pen and an extended position wherein said nib protrudes from said body; a force sensor cooperating with said retraction mechanism, said force sensor being configured to sense a force applied to said substrate by said nib when said nib is in said extended position; and a processor configured to generate, using at least some of the sensed coded data, indicating data indicative of the interaction with the substrate.