Patent ID: 7920208

Claim:
A method for generating a video signal having supplementary information therein for coupling to a display device, said method comprising: (a) receiving supplementary information; (b) converting the supplementary information into binary-coded data; (c) constructing an optically readable image of at least two dynamically opposed data cells corresponding to two logical states that represent the binary-coded data, such that a logical 0 of binary-coded data is represented by cell one having a first optical representation and cell two having a second optical representation, and a logical 1 of binary-coded data is oppositely represented by cell one having the second optical representation and cell two having the first optical representation, wherein the dynamically opposed data cells allow for dynamic reference with respect to each other; and (d) generating a supplementary video signal comprising an image stream representative of said binary-coded data by switching the optically readable image between logical states to binarily represent the supplementary information, wherein the supplementary video signal is suitable for coupling to a display device for visibly displaying the image stream comprising the optically readable image switching between logical states overlaid on the display device.