| 摘要 |
<p>A product (1) with stored non-sequential data is provided by means of a method which comprises the step of coding the data (6, 52) to a coding pattern (2) by means of at least one sequence (32) with symbols (3, 24) which have the characteristic that an arbitrary subsequence of a predetermined magnitude of the sequence (32) unambiguously defines the position of the subsequence (34, 35) in the sequence. Then the coding pattern is reproduced on a product (1). A user unit is adapted to record and decode the coding pattern (2).</p> |
