| 摘要 |
An information processing apparatus (and a method therefor) forms inputted digital information data into blocks which each correspond to a plurality of samples, orthogonally transforms the block data to form orthogonal transformed block data, and performs scrambling by transforming predetermined component data included in the orthogonal transformed block data. In addition, an information processing apparatus (and a method therefor) decodes scrambled, encoded data by decoding the encoded data, forming the decoded data into blocks which each correspond to predetermined data, transforming a predetermined coefficient included in the block data, and performing inversely-orthogonal-transformation of the transformed block data.
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