Encoding data in a pattern of symbols on a surface. A processor separates an ordered sequence of digits representative of the encoded data into a plurality of sequential windows. Each of the sequential windows includes a partial sequence of the ordered sequence of digits. The processor further transforms...http://www.google.de/patents/US7048198?utm_source=gb-gplus-sharePatent US7048198 - Coded pattern for an optical device and a prepared surface
Coded pattern for an optical device and a prepared surface
