Patent ID: 7121466

Claim:
A method for controlling a scrolling display, said method comprising: providing a moving scroll having a plurality of sequences of bar codes, each sequence of bar codes identifying a corresponding display on said moving scroll, each sequence of bar codes comprising a “start reading” code and an associated data code, said associated data code identifying uniquely said corresponding display; providing a display request comprising a request for a specific display on said moving scroll of said scrolling display; moving said moving scroll to detect a “start reading” code; reading the data code associated to said detected “start reading” code; providing said specific display if said associated data code is representative of said scrolling display request; and wherein each of said plurality of sequences of bar codes comprises a reference positioning code, said reference positioning code being located at a predetermined location in said sequences of bar codes; further wherein said data code comprises bars having at least one of a first width and a second width, said first width being larger than said second width; further wherein said reference positioning code and said “start reading code” are bars of the first width.