Patent ID: 7006660
Filing Date: 2006-02-28
Classification: G06T

Abstract:
1. A data processing apparatus for performing compression encoding processing on digital data, comprising: a digital watermark extracting device arranged to extract first additional information, embedded as a digital watermark, from inputted digital data; a digital watermark removing device arranged to remove the digital watermark from the inputted digital data based on the information extracted by said digital watermark extracting device; a frequency transformation device arranged to perform frequency transformation on the data, from which the digital watermark has been removed by said digital watermark removing device; a quantization device arranged to perform quantization processing on the data, on which frequency transformation has been performed by said frequency transformation device; a digital watermark embedding device arranged to embed the first additional information in the data, on which quantization processing has been performed by said quantization device; an entropy encoding device arranged to perform entropy encoding on the data, on which the digital watermark has been embedded by said digital watermark embedding device; and a code stream output device arranged to output a code stream, on which entropy encoding processing has been performed by said entropy encoding device.