| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and apparatus for embedding data in information material the data being a plurality of data items each having a different relative importance within a capacity of the apparatus for embedding data. SOLUTION: The apparatus for embedding data comprises an encoding processor to encode each of data items, and a combining processor operable to combine encoded data items with the information material. The information material provides a limited data embedding capacity, as a result for example of the limited bandwidth of the information material itself. Each of the data items are encoded and embedded to the effect that a proportion of the limited data embedding capacity is allocated to the encoded data items in accordance with the relative importance of these data items. As such, the quantity of error protection allowed to each of the data items can be arranged in accordance with the importance of the data items, whilst still satisfying the limited data embedding capacity. Accordingly, a greater amount of protection can be allowed to the more important data items. |
