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1.发明申请公开(公告)号：US20090245509A1
公开(公告)日：2009-10-01
申请号：US12481658
申请日：2009-06-10
CPC分类号： H04N21/4405 , H04L9/0662 , H04L9/14 , H04L9/3263 , H04N7/1675 , H04N21/2347 , H04N21/835
摘要： Video data exploitation by alteration of data is prevented. An extractor 111 extracts valid video data in data 110 and predetermined data in the data. An inserter 114 inserts an arithmetic operation result of the predetermined data by an arithmetic operation unit 113 into the valid video data encrypted by an encryptor 112. An output of the inserter 114 is supplied to an extractor 144 through a transmission path 120. The encrypted valid video data and arithmetic operation resultant data of the arithmetic operation unit 113 are extracted. An arithmetic operation unit 143 executes the same arithmetic operation as that of the arithmetic operation unit 113 to data corresponding to the data used in the arithmetic operation unit 113 from the valid video data decrypted by a decryptor 141 and extracted by an extractor 144. A comparator 145 compares an output of the arithmetic operation unit 143 with an arithmetic operation result extracted from data 140. When both of them do not coincide, it is determined that there is a possibility that the transmission data has been altered. An output of an another-output generator 146 is outputted as output data 148.
摘要翻译： 通过改变数据来防止视频数据的利用。 提取器111提取数据110中的有效视频数据和数据中的预定数据。 插入器114将由算术运算单元113将预定数据的算术运算结果插入由加密器112加密的有效视频数据。插入器114的输出通过传输路径120提供给提取器144。 提取算术运算部113的视频数据和算术运算结果数据。 算术运算单元143对与算术运算单元113中使用的数据相对应的数据，由解密器141解密的有效视频数据执行与算术运算单元113相同的算术运算，并由提取器144抽出。比较器 145将算术运算单元143的输出与从数据140提取的算术运算结果进行比较。当它们都不一致时，确定存在发送数据已被改变的可能性。 输出另一输出发生器146的输出作为输出数据148。
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2.发明授权公开(公告)号：US08024580B2
公开(公告)日：2011-09-20
申请号：US12481658
申请日：2009-06-10
IPC分类号： H04N7/167
CPC分类号： H04N21/4405 , H04L9/0662 , H04L9/14 , H04L9/3263 , H04N7/1675 , H04N21/2347 , H04N21/835
摘要： Video data exploitation by alteration of data is prevented. An extractor 111 extracts valid video data in data 110 and predetermined data in the data. An inserter 114 inserts an arithmetic operation result of the predetermined data by an arithmetic operation unit 113 into the valid video data encrypted by an encryptor 112. An output of the inserter 114 is supplied to an extractor 144 through a transmission path 120. The encrypted valid video data and arithmetic operation resultant data of the arithmetic operation unit 113 are extracted. An arithmetic operation unit 143 executes the same arithmetic operation as that of the arithmetic operation unit 113 to data corresponding to the data used in the arithmetic operation unit 113 from the valid video data decrypted by a decryptor 141 and extracted by an extractor 144. A comparator 145 compares an output of the arithmetic operation unit 143 with an arithmetic operation result extracted from data 140. When both of them do not coincide, it is determined that there is a possibility that the transmission data has been altered. An output of an another-output generator 146 is outputted as output data 148.
摘要翻译： 通过改变数据来防止视频数据的利用。 提取器111提取数据110中的有效视频数据和数据中的预定数据。 插入器114将由算术运算单元113将预定数据的算术运算结果插入由加密器112加密的有效视频数据。插入器114的输出通过传输路径120提供给提取器144。 提取算术运算部113的视频数据和算术运算结果数据。 算术运算单元143对与算术运算单元113中使用的数据相对应的数据，由解密器141解密的有效视频数据执行与算术运算单元113相同的算术运算，并由提取器144抽出。比较器 145将算术运算单元143的输出与从数据140提取的算术运算结果进行比较。当它们都不一致时，确定存在发送数据已被改变的可能性。 输出另一输出发生器146的输出作为输出数据148。
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3.发明授权公开(公告)号：US07885407B2
公开(公告)日：2011-02-08
申请号：US10572162
申请日：2004-09-16
IPC分类号： H04N7/167
CPC分类号： H04N21/4405 , H04L9/0662 , H04L9/14 , H04L9/3263 , H04N7/1675 , H04N21/2347 , H04N21/835
摘要： Video data exploitation by alteration of data is prevented. An extractor 111 extracts valid video data in data 110 and predetermined data in the data. An inserter 114 inserts an arithmetic operation result of the predetermined data by an arithmetic operation unit 113 into the valid video data encrypted by an encryptor 112. An output of the inserter 114 is supplied to an extractor 144 through a transmission path 120. The encrypted valid video data and arithmetic operation resultant data of the arithmetic operation unit 113 are extracted. An arithmetic operation unit 143 executes the same arithmetic operation as that of the arithmetic operation unit 113 to data corresponding to the data used in the arithmetic operation unit 113 from the valid video data decrypted by a decryptor 141 and extracted by an extractor 144. A comparator 145 compares an output of the arithmetic operation unit 143 with an arithmetic operation result extracted from data 140. When both of them do not coincide, it is determined that there is a possibility that the transmission data has been altered. An output of an another-output generator 146 is outputted as output data 148.
摘要翻译： 通过改变数据来防止视频数据的利用。 提取器111提取数据110中的有效视频数据和数据中的预定数据。 插入器114将由算术运算单元113将预定数据的算术运算结果插入由加密器112加密的有效视频数据中。插入器114的输出通过传输路径120提供给提取器144。 提取算术运算部113的视频数据和算术运算结果数据。 算术运算单元143对与算术运算单元113中使用的数据相对应的数据，由解密器141解密的有效视频数据执行与算术运算单元113相同的算术运算，并由提取器144提取。比较器 145将算术运算单元143的输出与从数据140提取的算术运算结果进行比较。当它们都不一致时，确定存在发送数据已被改变的可能性。 输出另一输出发生器146的输出作为输出数据148。
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公开(公告)号：US07706532B2
公开(公告)日：2010-04-27
申请号：US10564465
申请日：2004-07-06
IPC分类号： H04N7/167
CPC分类号： H04L9/0637 , H04L9/12 , H04L2209/125 , H04N21/2347 , H04N21/4307 , H04N21/4405
摘要： An encryption apparatus for encrypting input picture data with high secrecy and restoration against an error of encrypted data. An EXOR circuit calculates input picture data and a pseudo random sequence and obtains encrypted data. The obtained encrypted data are held in a first FF circuit. The first FF circuit is reset for each line. Counters count for each line or each frame and are reset for each frame or at the beginning of a program. An encryption device encrypts outputs of a second FF circuit that holds a fixed value, the counters and the first FF circuit with a key and generates a pseudo random sequence. A shift register divides the bit sequence. The EXOR circuit calculates the output of the shift register and the input picture data and obtains encrypted data. Since the encrypted output is fed back, data cannot be stolen using a successive input of the same data. In addition, since an encrypted output that is fed back is reset for each line, the encrypted output can be recovered from an error.
摘要翻译： 一种加密装置，用于针对加密数据的错误高密度地加密输入图像数据并进行恢复。 EXOR电路计算输入图像数据和伪随机序列，并获得加密数据。 获得的加密数据保存在第一FF电路中。 第一个FF电路为每一行复位。 计数器计数每行或每一帧，并为每个帧或程序开始时重置。 加密装置用密钥加密保持固定值的第二FF电路的输出，计数器和第一FF电路，并产生伪随机序列。 移位寄存器分配位序列。 EXOR电路计算移位寄存器和输入图像数据的输出，并获得加密数据。 由于加密输出被反馈，所以不能使用相同数据的连续输入来窃取数据。 此外，由于反馈的加密输出针对每行复位，所以加密的输出可以从错误中恢复。
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5.发明申请公开(公告)号：US20070177718A1
公开(公告)日：2007-08-02
申请号：US10572162
申请日：2004-09-16
IPC分类号： H04L9/28
CPC分类号： H04N21/4405 , H04L9/0662 , H04L9/14 , H04L9/3263 , H04N7/1675 , H04N21/2347 , H04N21/835
摘要： Video data exploitation by alteration of data is prevented. An extractor 111 extracts valid video data in data 110 and predetermined data in the data. An inserter 114 inserts an arithmetic operation result of the predetermined data by an arithmetic operation unit 113 into the valid video data encrypted by an encryptor 112. An output of the inserter 114 is supplied to an extractor 144 through a transmission path 120. The encrypted valid video data and arithmetic operation resultant data of the arithmetic operation unit 113 are extracted. An arithmetic operation unit 143 executes the same arithmetic operation as that of the arithmetic operation unit 113 to data corresponding to the data used in the arithmetic operation unit 113 from the valid video data decrypted by a decryptor 141 and extracted by an extractor 144. A comparator 145 compares an output of the arithmetic operation unit 143 with an arithmetic operation result extracted from data 140. When both of them do not coincide, it is determined that there is a possibility that the transmission data has been altered. An output of an another-output generator 146 is outputted as output data 148.
摘要翻译： 通过改变数据来防止视频数据的利用。 提取器111提取数据110中的有效视频数据和数据中的预定数据。 插入器114将由算术运算单元113将预定数据的算术运算结果插入由加密器112加密的有效视频数据。 插入器114的输出通过传输路径120提供给提取器144。 提取算术运算部113的加密的有效视频数据和算术运算结果数据。 算术运算单元143对与算术运算单元113中使用的数据相对应的数据，与由解密器141解密并由提取器144提取的有效视频数据执行与算术运算单元113相同的算术运算。 比较器145将算术运算单元143的输出与从数据140提取的算术运算结果进行比较。 当它们都不一致时，确定存在发送数据已被改变的可能性。 输出另一输出发生器146的输出作为输出数据148。
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公开(公告)号：US20060210065A1
公开(公告)日：2006-09-21
申请号：US10564465
申请日：2004-07-06
IPC分类号： H04L9/28
CPC分类号： H04L9/0637 , H04L9/12 , H04L2209/125 , H04N21/2347 , H04N21/4307 , H04N21/4405
摘要： Input picture data are encrypted with high secrecy and restoration against an error of encrypted data. An EXOR circuit 100 calculates input picture data and a pseudo random sequence and obtains encrypted data. The obtained encrypted data are held in an FF circuit 101. The FF circuit 101 is reset for each line. Counters 102 and 103 count for each line or each frame and are reset for each frame or at the beginning of a program. An encryption device 105 encrypts outputs of an FF circuit 104 that holds a fixed value, the counters 103 and 102, and the FF circuit 101 with a key (K) and generates a pseudo random sequence. A shift register 106 divides the bit sequence. The EXOR 100 calculates the output of the shift register 106 and the input picture data and obtains encrypted data. Since the encrypted output is fed back, data cannot be stolen using a successive input of the same data. In addition, since an encrypted output that is fed back is reset for each line, the encrypted output can be completely recovered from an error.
摘要翻译： 输入图像数据以加密数据的错误的高度保密和恢复加密。 EXOR电路100计算输入图像数据和伪随机序列，并获得加密数据。 获得的加密数据保存在FF电路101中。 对于每一行，FF电路101被复位。 计数器102和103对于每一行或每个帧进行计数，并且对于每个帧或在程序的开始被重置。 加密装置105利用密钥（K）加密保持固定值的FF电路104的输出，计数器103和102以及FF电路101，并产生伪随机序列。 移位寄存器106分割位序列。 EXOR 100计算移位寄存器106的输出和输入图像数据，并获得加密的数据。 由于加密输出被反馈，所以不能使用相同数据的连续输入来窃取数据。 另外，由于反馈的加密输出针对每行复位，所以加密的输出可以从错误中完全恢复。
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公开(公告)号：US4287529A
公开(公告)日：1981-09-01
申请号：US32508
申请日：1979-04-23
摘要： Improved time base error correcting apparatus of the type wherein time base errors in a video signal, such as a video signal reproduced by a video signal playback device, are corrected. The apparatus includes a main memory into which picture elements contained in each line interval of the video signal are written at a write-in rate that is synchronized with the time base information contained in that video signal, and from which the picture elements are read out at a reference rate. A drop-out detector detects drop-out conditions which may occur in the video information and synchronizing information portions of the video signal. Drop-out indications are stored in a drop-out condition memory so as to represent the positions within a line interval that drop-out has occurred. These drop-out indications are written into and read out of the drop-out condition memory in synchronism with the writing in and reading out of picture elements from the main memory. Each picture element read out from the main memory is supplied to a drop-out compensator which is responsive to a read out drop-out indication to replace a dropped out picture element that is read out from the main memory with the picture element which had been in the same relative position in the immediately preceding line interval. A velocity error correcting device also is provided in order to correct velocity errors which may be present in each line interval. In the event that a velocity error cannot be detected, for example, because drop-out has occurred in the synchronizing portion of a line interval, the velocity error which had been detected for the previous line interval is used again in this and then the next-following interval, i.e., for a total of three consecutive line intervals. An offset voltage is added to the velocity error correcting operation for this third line interval, except that this offset voltage is subtracted during a drop-out compensating operation in that third line interval.
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