Patent ID: 6546139
Filing Date: 2003-04-08
Classification: H04N

Abstract:
A coding apparatus for coding first data in accordance with second data, said first data being image data of a plurality of pixels, said apparatus comprising:storage means for storing at least partial data of said first data, said at least partial data comprising a series of pixel data arranged in a predetermined direction on said first image data; and coding means for embedding data in relation to said second data into said first data by rotating said at least partial data stored in said storage means in accordance with said second data; wherein said coding means performs a rotation operation of said series of pixel data stored in said storage means toward said predetermined direction in accordance with said second data, said first image data being rotated in proportion to the number of pixels corresponding to a value of said second data toward said predetermined direction, so that said data in relation to said second data is embedded in said first image data.