Patent ID: 7557829

Claim:
A device for reading book data, the device comprising: a housing including first and second housing sections connected by a hinge; a flexible display positioned in the housing to extend from the first housing section to the second housing section over the hinge so as to be of approximately equal width to the housing, the flexible display configured to flexibly fold about the hinge; a slot for receiving a card having visible content printed thereon, the card further having the book data encoded on the surface of the card as an array of dots, the array of dots being printed on the surface in ink substantially invisible to an average unaided human eye and being printed on the surface independently of the visible content printed on the surface; a detector for optically detecting the array of dots across the surface of the card received in the slot and for outputting a first signal representative thereof; a decoder interconnected to said detector for receiving and decoding said first signal to produce a display signal corresponding to the first signal; wherein the display signal causes text or images corresponding to the book data to be displayed on said flexible display.