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1. 发明申请

US20080118101A1 SYSTEM AND METHOD FOR EMBEDDING ADDITIONAL INFORMATION IN VIDEO DATA 审中-公开
公开(公告)号：US20080118101A1
公开(公告)日：2008-05-22
申请号：US11930370
申请日：2007-10-31
申请人： Koichi Kamijo , Shuichi Shimizu , Norishige Morimoto
发明人： Koichi Kamijo , Shuichi Shimizu , Norishige Morimoto
IPC分类号： G06K9/00 , H04N7/12
CPC分类号： G06T1/0035 , G06T2201/0052 , G06T2201/0053 , H04N7/24 , H04N19/467 , H04N21/23892 , H04N21/8358
摘要： A method and system for embedding an electronic watermark directly in an MPEG stream is provided. An intra-macroblock of an I-frame or of a P or B-frame is detected in an MPEG stream, and following the detection of an intra-macroblock of the I-frame or of the P or B-frame, data for one macroblock are extracted from the MPEG stream and buffered. An embedding pattern is embedded in the buffered macroblock without changing the length of VLC, and the resultant macroblock is returned to the MPEG stream. More specifically, a DC factor is extracted from the buffered macroblock, and a pseudorandom number is generated to produce an embedding pattern. Then, whether the bit length of the DC factor will not be changed by embedding the obtained embedded pattern is determined. When the bit length of the DC factor not be changed, the embedding pattern is embedded in the buffered macroblock. When the bit length will be changed, whether ½ of the embedding pattern can be embedded is determined. If possible, ½ of the embedded pattern is embedded in the macroblock.

2. 发明申请

US20080117986A1 SYSTEM AND METHOD FOR EMBEDDING ADDITIONAL INFORMATION IN VIDEO DATA 审中-公开
公开(公告)号：US20080117986A1
公开(公告)日：2008-05-22
申请号：US11930280
申请日：2007-10-31
申请人： Koichi Kamijo , Shuichi Shimizu , Norishige Morimoto
发明人： Koichi Kamijo , Shuichi Shimizu , Norishige Morimoto
IPC分类号： H04N7/12
CPC分类号： G06T1/0035 , G06T2201/0052 , G06T2201/0053 , H04N7/24 , H04N19/467 , H04N21/23892 , H04N21/8358
摘要： A method and system for embedding an electronic watermark directly in an MPEG stream is provided. An intra-macroblock of an I-frame or of a P or B-frame is detected in an MPEG stream, and following the detection of an intra-macroblock of the I-frame or of the P or B-frame, data for one macroblock are extracted from the MPEG stream and buffered. An embedding pattern is embedded in the buffered macroblock without changing the length of VLC, and the resultant macroblock is returned to the MPEG stream. More specifically, a DC factor is extracted from the buffered macroblock, and a pseudorandom number is generated to produce an embedding pattern. Then, whether the bit length of the DC factor will not be changed by embedding the obtained embedded pattern is determined. When the bit length of the DC factor not be changed, the embedding pattern is embedded in the buffered macroblock. When the bit length will be changed, whether ½ of the embedding pattern can be embedded is determined. If possible, ½ of the embedded pattern is embedded in the macroblock.

3. 发明授权

US08406311B2 System and method for embedding additional information in video data 失效
标题翻译：在视频数据中嵌入附加信息的系统和方法
公开(公告)号：US08406311B2
公开(公告)日：2013-03-26
申请号：US11930318
申请日：2007-10-31
申请人： Koichi Kamijo , Shuichi Shimizu , Norishige Morimoto
发明人： Koichi Kamijo , Shuichi Shimizu , Norishige Morimoto
IPC分类号： H04N7/12
CPC分类号： G06T1/0035 , G06T2201/0052 , G06T2201/0053 , H04N7/24 , H04N19/467 , H04N21/23892 , H04N21/8358
摘要： A method and system for embedding an electronic watermark directly in an MPEG stream is provided. An intra-macroblock of an I-frame or of a P or B-frame is detected in an MPEG stream, and following the detection of an intra-macroblock of the I-frame or of the P or B-frame, data for one macroblock are extracted from the MPEG stream and buffered. An embedding pattern is embedded in the buffered macroblock without changing the length of VLC, and the resultant macroblock is returned to the MPEG stream. More specifically, a DC factor is extracted from the buffered macroblock, and a pseudorandom number is generated to produce an embedding pattern. Then, whether the bit length of the DC factor will not be changed by embedding the obtained embedded pattern is determined. When the bit length of the DC factor not be changed, the embedding pattern is embedded in the buffered macroblock. When the bit length will be changed, whether ½ of the embedding pattern can be embedded is determined. If possible, ½ of the embedded pattern is embedded in the macroblock.
摘要翻译：提供了一种用于将电子水印直接嵌入到MPEG流中的方法和系统。在MPEG流中检测I帧或P帧或B帧的宏块内部，并且在I帧或P帧或B帧的宏块内检测之后，对于一个从MPEG流提取宏块并进行缓冲。在不改变VLC的长度的情况下，将嵌入图案嵌入到缓冲宏块中，并将所得到的宏块返回到MPEG流。更具体地，从缓冲的宏块中提取DC因子，生成伪随机数以产生嵌入模式。然后，通过嵌入获得的嵌入图案来确定DC因子的位长度是否不会改变。当直流因子的位长度不改变时，嵌入模式被嵌入到缓冲宏块中。当位长度被改变时，确定嵌入模式的1/2是否被嵌入。如果可能，嵌入式图案的1/2将嵌入宏块中。

4. 发明申请

US20080117987A1 SYSTEM AND METHOD FOR EMBEDDING ADDITIONAL INFORMATION IN VIDEO DATA 失效
公开(公告)号：US20080117987A1
公开(公告)日：2008-05-22
申请号：US11930318
申请日：2007-10-31
申请人： Koichi Kamijo , Shuichi Shimizu , Norishige Morimoto
发明人： Koichi Kamijo , Shuichi Shimizu , Norishige Morimoto
IPC分类号： H04N7/12
CPC分类号： G06T1/0035 , G06T2201/0052 , G06T2201/0053 , H04N7/24 , H04N19/467 , H04N21/23892 , H04N21/8358
摘要： A method and system for embedding an electronic watermark directly in an MPEG stream is provided. An intra-macroblock of an I-frame or of a P or B-frame is detected in an MPEG stream, and following the detection of an intra-macroblock of the I-frame or of the P or B-frame, data for one macroblock are extracted from the MPEG stream and buffered. An embedding pattern is embedded in the buffered macroblock without changing the length of VLC, and the resultant macroblock is returned to the MPEG stream. More specifically, a DC factor is extracted from the buffered macroblock, and a pseudorandom number is generated to produce an embedding pattern. Then, whether the bit length of the DC factor will not be changed by embedding the obtained embedded pattern is determined. When the bit length of the DC factor not be changed, the embedding pattern is embedded in the buffered macroblock. When the bit length will be changed, whether ½ of the embedding pattern can be embedded is determined. If possible, ½ of the embedded pattern is embedded in the macroblock.

5. 发明申请

US20080056671A1 SYSTEM AND METHOD FOR EMBEDDING ADDITIONAL INFORMATION IN VIDEO DATA 审中-公开
公开(公告)号：US20080056671A1
公开(公告)日：2008-03-06
申请号：US11928831
申请日：2007-10-30
申请人： Koichi Kamijo , Shuichi Shimizu , Norishige Morimoto
发明人： Koichi Kamijo , Shuichi Shimizu , Norishige Morimoto
IPC分类号： H04N5/91
CPC分类号： G06T1/0035 , G06T2201/0052 , G06T2201/0053 , H04N7/24 , H04N19/467 , H04N21/23892 , H04N21/8358
摘要： A method and system for embedding an electronic watermark directly in an MPEG stream is provided. An intra-macroblock of an I-frame or of a P or B-frame is detected in an MPEG stream, and following the detection of an intra-macroblock of the I-frame or of the P or B-frame, data for one macroblock are extracted from the MPEG stream and buffered. An embedding pattern is embedded in the buffered macroblock without changing the length of VLC, and the resultant macroblock is returned to the MPEG stream. More specifically, a DC factor is extracted from the buffered macroblock, and a pseudorandom number is generated to produce an embedding pattern. Then, whether the bit length of the DC factor will not be changed by embedding the obtained embedded pattern is determined. When the bit length of the DC factor not be changed, the embedding pattern is embedded in the buffered macroblock. When the bit length will be changed, whether ½ of the embedding pattern can be embedded is determined. If possible, ½ of the embedded pattern is embedded in the macroblock.

6. 发明授权

US07295615B1 System for embedding additional information in video data, and embedding method 失效
标题翻译：用于在视频数据中嵌入附加信息的系统和嵌入方法
公开(公告)号：US07295615B1
公开(公告)日：2007-11-13
申请号：US09763988
申请日：1998-11-25
申请人： Koichi Kamijo , Shuichi Shimizu , Norishige Morimoto
发明人： Koichi Kamijo , Shuichi Shimizu , Norishige Morimoto
IPC分类号： H04N7/12
CPC分类号： G06T1/0035 , G06T2201/0052 , G06T2201/0053 , H04N7/24 , H04N19/467 , H04N21/23892 , H04N21/8358
摘要： It is one object of the present invention to provide a method and system for embedding an electronic watermark directly in an MPEG stream. An intra-macroblock of an I-frame or of a P or B-frame is detected in an MPEG stream, and following the detection of an intra-macroblock of the I-frame or of the P or B-frame, data for one macroblock are extracted from the MPEG stream and buffered. An embedding pattern is embedded in the buffered macroblock without changing the length of VLC, and the resultant macroblock is returned to the MPEG stream. More specifically, a DC factor is extracted from the buffered macroblock, and a pseudorandom number is generated to produce an embedding pattern. Then, whether the bit length of the DC factor will not be changed by embedding the obtained embedded pattern is determined. When the bit length of the DC factor not be changed, the embedding pattern is embedded in the buffered macroblock. When the bit length will be changed, whether ½ of the embedding pattern can be embedded is determined. If possible, ½ of the embedded pattern is embedded in the macroblock.
摘要翻译：本发明的一个目的是提供一种将电子水印直接嵌入到MPEG流中的方法和系统。在MPEG流中检测I帧或P帧或B帧的宏块内部，并且在I帧或P帧或B帧的宏块内检测之后，对于一个从MPEG流提取宏块并进行缓冲。在不改变VLC的长度的情况下，将嵌入图案嵌入到缓冲宏块中，并将所得到的宏块返回到MPEG流。更具体地，从缓冲的宏块中提取DC因子，生成伪随机数以产生嵌入模式。然后，通过嵌入获得的嵌入图案来确定DC因子的位长度是否不会改变。当直流因子的位长度不改变时，嵌入模式被嵌入到缓冲宏块中。当位长度被改变时，确定嵌入模式的1/2是否被嵌入。如果可能，嵌入式图案的1/2将嵌入宏块中。

7. 发明申请

US20080112490A1 SYSTEM AND METHOD FOR EMBEDDING ADDITIONAL INFORMATION IN VIDEO DATA 审中-公开
标题翻译：在视频数据中嵌入附加信息的系统和方法
公开(公告)号：US20080112490A1
公开(公告)日：2008-05-15
申请号：US11931241
申请日：2007-10-31
申请人： Koichi Kamijo , Shuichi Shimizu , Norishige Morimoto
发明人： Koichi Kamijo , Shuichi Shimizu , Norishige Morimoto
IPC分类号： H04N7/12
CPC分类号： G06T1/0035 , G06T2201/0052 , G06T2201/0053 , H04N7/24 , H04N19/467 , H04N21/23892 , H04N21/8358
摘要： A method and system for embedding an electronic watermark directly in an MPEG stream is provided. An intra-macroblock of an I-frame or of a P or B-frame is detected in an MPEG stream, and following the detection of an intra-macroblock of the I-frame or of the P or B-frame, data for one macroblock are extracted from the MPEG stream and buffered. An embedding pattern is embedded in the buffered macroblock without changing the length of VLC, and the resultant macroblock is returned to the MPEG stream. More specifically, a DC factor is extracted from the buffered macroblock, and a pseudorandom number is generated to produce an embedding pattern. Then, whether the bit length of the DC factor will not be changed by embedding the obtained embedded pattern is determined. When the bit length of the DC factor not be changed, the embedding pattern is embedded in the buffered macroblock. When the bit length will be changed, whether ½ of the embedding pattern can be embedded is determined. If possible, ½ of the embedded pattern is embedded in the macroblock.
摘要翻译：提供了一种用于将电子水印直接嵌入到MPEG流中的方法和系统。在MPEG流中检测I帧或P帧或B帧的宏块内部，并且在I帧或P帧或B帧的宏块内检测之后，对于一个从MPEG流提取宏块并进行缓冲。在不改变VLC的长度的情况下，将嵌入图案嵌入到缓冲宏块中，并将所得到的宏块返回到MPEG流。更具体地，从缓冲的宏块中提取DC因子，生成伪随机数以产生嵌入模式。然后，通过嵌入获得的嵌入图案来确定DC因子的位长度是否不会改变。当直流因子的位长度不改变时，嵌入模式被嵌入到缓冲宏块中。当位长度被改变时，确定嵌入模式的1/2是否被嵌入。如果可能，嵌入式图案的1/2将嵌入宏块中。

8. 发明授权

US07093299B1 System for authenticating digital data 失效
标题翻译：用于认证数字数据的系统
公开(公告)号：US07093299B1
公开(公告)日：2006-08-15
申请号：US09459287
申请日：1999-12-17
申请人： Koichi Kamijo , Norishige Morimoto , Akio Koide , Tohru Sakakura
发明人： Koichi Kamijo , Norishige Morimoto , Akio Koide , Tohru Sakakura
IPC分类号： G06F7/04 , G06F11/00 , H04L9/00
CPC分类号： H04N1/32144 , H04N1/00204 , H04N1/2112 , H04N1/2158 , H04N1/32101 , H04N2101/00 , H04N2201/0051 , H04N2201/3233 , H04N2201/3236
摘要： A system for authenticating digital data capable of preventing change or disguise of data by improvement or interchange in case of no confidentiality in the data itself so as to maintain the data. When writing digital data from an input device to a memory and transferring the digital data from the memory to a receiving device, device authentication is performed between the input device and the memory and between the memory and the receiving device respectively. At the same time, when writing digital data to the memory, in the case of implementing on the digital data an electronic signature by a one-way hash function and also reading from the memory and transferring the digital data, the implemented electronic signature is decrypted so as to transfer the digital data after ensuring that it has not been changed since it was recorded. Thus, it is possible to prevent change or disguise of data by improvement or interchange in case of no confidentiality in the data itself so as to maintain the data.
摘要翻译：用于认证数字数据的系统，其能够在数据本身没有机密性的情况下通过改进或交换来防止数据的改变或伪装，以保持数据。当从输入设备将数字数据写入存储器并将数字数据从存储器传送到接收设备时，在输入设备和存储器之间以及存储器和接收设备之间分别执行设备认证。同时，当将数字数据写入存储器时，在通过单向散列函数对数字数据实现电子签名并且还从存储器读取并传送数字数据的情况下，将所实现的电子签名解密以便在确保自从记录以来没有被更改之后传送数字数据。因此，在数据本身没有机密性的情况下，可以通过改进或交换来防止数据的改变或伪装，以保持数据。

9. 发明授权

US06526385B1 System for embedding additional information in audio data 失效
标题翻译：用于在音频数据中嵌入附加信息的系统
公开(公告)号：US06526385B1
公开(公告)日：2003-02-25
申请号：US09396316
申请日：1999-09-15
申请人： Seiji Kobayashi , Dean D. Chen , Yoshiaki Ohshima , Shuichi Shimizu , Norishige Morimoto
发明人： Seiji Kobayashi , Dean D. Chen , Yoshiaki Ohshima , Shuichi Shimizu , Norishige Morimoto
IPC分类号： G10L2104
CPC分类号： G10L19/018 , G11B20/00891 , H04H20/31
摘要： A method and a system is provided for embedding and detecting additional information, such as copyright information, in audio data, so that a modification in the sonic quality due to the embedding is imperceptible to human beings, and does not drastically deteriorate the sonic quality.
摘要翻译：提供了一种用于在音频数据中嵌入和检测诸如版权信息的附加信息的方法和系统，使得由于嵌入而引起的声音质量的修改对于人是不可察觉的，并且不会使声音质量显着劣化。

10. 发明授权

US06512835B1 Data hiding and extraction methods 有权
标题翻译：数据隐藏和提取方法
公开(公告)号：US06512835B1
公开(公告)日：2003-01-28
申请号：US09480024
申请日：2000-01-10
申请人： Masayuki Numao , Shuichi Shimizu , Norishige Morimoto , Mei Kobayashi
发明人： Masayuki Numao , Shuichi Shimizu , Norishige Morimoto , Mei Kobayashi
IPC分类号： G06K900
CPC分类号： H04N1/32203 , G06T1/0021 , G06T2201/0051 , G06T2201/0061 , G09C5/00 , H04N1/32208 , H04N1/32251 , H04N1/32309 , H04N21/23892 , H04N21/8358 , H04N2201/3233 , H04N2201/327
摘要： The present invention provides a data hiding method of hiding media data in message data and a data extraction method of extracting the hidden data wherein message data is dispersively hidden in media data such as an image or sound to prevent a third person from modifying the message data easily. More specifically, the present invention relates to a data hiding method in which media data is expressed as a media array while message data is expressed as a message array so that the array elements of the message array can be dispersively hidden in the message array based on a state values specifying a particular array element of the media array, comprising the steps of: (a) determining the j-th (j≧0) state value Sj; (b) determining (j+1)-th state value Sj+1 based on the j-th state value, the array element of the media array indicated by the j-th state value, and the array element of the message array; and (c) hiding data with respect to the array element of the media array indicated by the (j+1)-th state value Sj+1.
摘要翻译：本发明提供一种在消息数据中隐藏媒体数据的数据隐藏方法和提取隐藏数据的数据提取方法，其中消息数据被分散地隐藏在诸如图像或声音的媒体数据中，以防止第三人修改消息数据更具体地，本发明涉及一种数据隐藏方法，其中媒体数据被表示为媒体阵列，而消息数据被表示为消息数组，使得消息数组的数组元素可以被分散地隐藏在消息数组中基于指定媒体阵列的特定数组元素的状态值，包括以下步骤：（a）确定第j（j> = 0）状态值Sj;（b）确定第（j + 1）状态基于第j个状态值的值Sj + 1，由第j个状态值指示的媒体数组的数组元素和消息数组的数组元素; 和（c）隐藏相对于由第（j + 1）状态值Sj + 1指示的媒体阵列的数组元素的数据。

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