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Image data encoding system and image inputting apparatus

  • US 6,298,142 B1
  • Filed: 02/12/1998
  • Issued: 10/02/2001
  • Est. Priority Date: 02/14/1997
  • Status: Expired due to Term
First Claim
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1. An image data encoding system for embedding electronic watermark data to an original image, which comprises:

  • discrete cosine transforming means for discrete-cosine transforming said original image;

    electronic watermark data embedding means for embedding said electronic watermark data in the data which has been transformed by said discrete cosine transforming means;

    data selecting means for selecting the direct output signal of said discrete cosine transforming means or the direct output signal of said electronic watermark data embedding means, and a flip-flop connected to said data selecting means, wherein said data selecting means selects the output signal of said discrete cosine transforming means or the output signal of said electronic watermark data embedding means corresponding to information stored in said flip-flop.

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