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公开(公告)号:US07162646B2
公开(公告)日:2007-01-09
申请号:US10315135
申请日:2002-12-10
申请人: Guo-Zua Wu , I-Yen Lin , Wen-Hsing Hsu
发明人: Guo-Zua Wu , I-Yen Lin , Wen-Hsing Hsu
CPC分类号: G11B20/00086 , G06F21/10 , G06F21/805 , G11B20/0021 , G11B20/00304 , G11B20/00362
摘要: A disk anti-copy system. An encrypted anti-copy mechanism with a device key table (Kd Table) prepared in a device and a fixed encryption processed media key block (MKB) pre-recorded in a disk is established. Only through the appropriate fixed encryption process between the key and the MKB can the device correctly read the disk. This controls the device and prevents disks from being copied. Moreover, the invention provides a method and device for preventing disks from being copied.
摘要翻译: 磁盘防拷贝系统。 建立了在设备中准备的设备密钥表(Kd Table)和预先记录在磁盘中的固定加密处理的媒体密钥块(MKB)的加密防拷贝机制。 只有通过密钥和MKB之间的适当的固定加密过程,设备才能正确读取磁盘。 这将控制设备并防止磁盘被复制。 此外,本发明提供了一种用于防止磁盘被复制的方法和装置。
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公开(公告)号:US20060023790A1
公开(公告)日:2006-02-02
申请号:US11023491
申请日:2004-12-29
申请人: Chia-Yang Tsai , S. Tsai , Hsueh-Maing Hang , Ti-Hao Chiang , Guo-Zua Wu
发明人: Chia-Yang Tsai , S. Tsai , Hsueh-Maing Hang , Ti-Hao Chiang , Guo-Zua Wu
CPC分类号: H04N5/145 , G06T7/215 , H04N19/117 , H04N19/139 , H04N19/513
摘要: A method for processing video image is provided to perform a motion vector filtering process on the image after being processed by a motion estimation process. The motion vector filtering process adjusts the motion vectors derived for each block in a video sequence, so that the motion vector of each block and the actual moving direction of the corresponding object in the image tend to conformity. Then, the blocks with similar motion vectors are merged and blocks with radical motion vectors are corrected, thereby reducing distortion of the output image and the number of bits used to represent the motion information, which in turns increases the efficiency of compression process.
摘要翻译: 提供了一种用于处理视频图像的方法,用于通过运动估计处理进行处理后对图像执行运动矢量滤波处理。 运动矢量滤波处理调整对于视频序列中的每个块导出的运动矢量,使得每个块的运动矢量和图像中相应对象的实际移动方向趋于一致。 然后,将具有相似的运动矢量的块合并,并修正具有激进运动矢量的块,从而减少输出图像的失真和用于表示运动信息的位数,这又提高了压缩处理的效率。
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公开(公告)号:US20050135654A1
公开(公告)日:2005-06-23
申请号:US10880513
申请日:2004-07-01
申请人: Jian-Ru Li , Guo-Zua Wu , Meng-Han Tsai , Kun-Ta Wu
发明人: Jian-Ru Li , Guo-Zua Wu , Meng-Han Tsai , Kun-Ta Wu
CPC分类号: G06T1/005 , G06T2201/0052 , G06T2201/0083
摘要: A watermark coding method and its recording medium utilize image interleaving and wavelet-based transformation to enhance the robustness of the image. The watermark series to be inserted is converted, encrypted, and modulated to increase the difficulty in decoding and restoring. Finally, the watermark is distributed and hidden in various frequency bands of the image in a frequency hopping way, generating a robust watermarked image. When used in a recording medium, side information produced during coding is recorded in the lead-in area of the recording medium to reduce the chances of illegal copying.
摘要翻译: 水印编码方法及其记录介质利用图像交织和基于小波的变换来增强图像的鲁棒性。 要插入的水印系列被转换,加密和调制,以增加解码和恢复的难度。 最后,水印以跳频方式分布和隐藏在图像的各个频带中,生成鲁棒的水印图像。 当在记录介质中使用时,编码期间产生的副信息被记录在记录介质的导入区中,以减少非法复制的机会。
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