发明申请
US20090125310A1 APPARATUS AND METHOD FOR INSERTING/EXTRACTING CAPTURING RESISTANT AUDIO WATERMARK BASED ON DISCRETE WAVELET TRANSFORM, AUDIO RIGHTS PROTECTION SYSTEM USING THE SAME
审中-公开
基于离散小波变换插入/提取拍摄电阻水印的装置和方法,使用该音视频保护系统的音视频保护系统
- 专利标题: APPARATUS AND METHOD FOR INSERTING/EXTRACTING CAPTURING RESISTANT AUDIO WATERMARK BASED ON DISCRETE WAVELET TRANSFORM, AUDIO RIGHTS PROTECTION SYSTEM USING THE SAME
- 专利标题(中): 基于离散小波变换插入/提取拍摄电阻水印的装置和方法,使用该音视频保护系统的音视频保护系统
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申请号: US12298994申请日: 2007-06-11
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公开(公告)号: US20090125310A1公开(公告)日: 2009-05-14
- 发明人: Seungjae Lee , Sang Kwang Lee , Jin Soo Seo , Young Ho Suh , Yong Seok Seo , Seon Hwa Lee , Won Gyum Kim , Wonyoung Yoo , Sung Hwan Lee , Hye Won Jung , Young Suk Yoon
- 申请人: Seungjae Lee , Sang Kwang Lee , Jin Soo Seo , Young Ho Suh , Yong Seok Seo , Seon Hwa Lee , Won Gyum Kim , Wonyoung Yoo , Sung Hwan Lee , Hye Won Jung , Young Suk Yoon
- 优先权: KR10-2006-0055953 20060621
- 国际申请: PCT/KR2007/002803 WO 20070611
- 主分类号: G10L21/00
- IPC分类号: G10L21/00
摘要:
An apparatus and method for embedding and extracting a capturing-resistant audio watermark based on discrete wavelet transform, and a copyright management system using the same are provided. The apparatus for embedding a wavelet based audio watermark includes: a framing unit for dividing an input audio signal into small signals with a regular length; a discrete wavelet transform unit for calculating an mean value of wavelet coefficients by transforming the small signals based on a discrete wavelet transform; and an embedding unit for changing the calculated mean value according to a watermark where a synchronization signal is inserted and inserting the watermark into the audio signal.
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