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公开(公告)号：US06891951B2
公开(公告)日：2005-05-10
申请号：US09733057
申请日：2000-12-11
IPC分类号： H01S3/034 , H01S3/036 , H01S3/038 , H01S3/07 , H01S3/08 , H01S3/086 , H04L9/06 , H04L9/08 , H04L9/32 , H04L9/14
CPC分类号： H04L9/0618 , H04L2209/30 , H04L2209/603
摘要： Bits of a first bit sequence are rearranged in a first matrix according to a predetermined arrangement rule. The first bit sequence represents information being a base of a key. Blocks are formed in the first matrix. Each of the blocks has bits, the number of which is smaller than the number of bits composing the first matrix. Logical operation is executed among bits in each of the blocks, and a bit being a result of the logical operation is generated. The logical-operation-result bits are combined into a second bit sequence. The number of bits composing the second bit sequence is smaller than the number of bits composing the first bit sequence. There is a second matrix composed of predetermined third bit sequences. The second matrix is accessed and one is read out from among the third bit sequences in response to the second bit sequence. The read-out third bit sequence is outputted as information representative of the key. The number of bits composing each of the third bit sequences is smaller than the number of bits composing the second bit sequence.
摘要翻译： 根据预定的布置规则，第一比特序列的比特重新排列在第一矩阵中。 第一位序列表示作为键的基础的信息。 块形成在第一矩阵中。 每个块具有位数，其数量小于构成第一矩阵的位数。 在每个块中的位之间执行逻辑运算，并且生成作为逻辑运算结果的位。 逻辑运算结果位被组合成第二位序列。 构成第二比特序列的比特数小于构成第一比特序列的比特数。 存在由预定的第三比特序列组成的第二矩阵。 第二矩阵被访问，并且响应于第二比特序列从第三比特序列中读出一个。 作为代表键的信息输出读出的第3位序列。 构成每个第三比特序列的比特数小于构成第二比特序列的比特数。
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公开(公告)号：US08131135B2
公开(公告)日：2012-03-06
申请号：US11898251
申请日：2007-09-11
IPC分类号： H04N5/917
CPC分类号： G11B20/10527 , G11B27/034 , G11B27/036 , G11B2020/10685 , G11B2020/1074 , G11B2220/20
摘要： Executes a re-encoding after decoding data of a connection section A of a first MPEG picture data. This re-encoding is executed based on a control such that a transition of a VBV buffer occupation value starts from a VBV buffer occupation value at a position a and ends with a VBV buffer occupation value at a position d. Up to the position a of the first MPEG picture data, the first MPEG picture data is reproduced. Next, re-encoded MPEG picture data of the connection section A is reproduced. Thereafter, the data is connected to the position d of a second MPEG picture data, and the second MPEG picture data of the position d and after is reproduced.
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公开(公告)号：US07254234B2
公开(公告)日：2007-08-07
申请号：US10227460
申请日：2002-08-26
IPC分类号： H04L9/00
CPC分类号： H04L9/0861
摘要： An encryption key is generated in response to a plurality of information pieces being bases for the encryption key. Original information is encrypted into encryption-resultant information in response to the generated encryption key. The encryption-resultant information is divided into units. Each of the units is loaded with encryption control information for identifying the plurality of information pieces being the bases for the encryption key.
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公开(公告)号：US20070291943A1
公开(公告)日：2007-12-20
申请号：US11808359
申请日：2007-06-08
IPC分类号： H04L9/00
CPC分类号： H04L9/0861
摘要： An encryption key is generated in response to a plurality of information pieces being bases for the encryption key. Original information is encrypted into encryption-resultant information in response to the generated encryption key. The encryption-resultant information is divided into units. Each of the units is loaded with encryption control information for identifying the plurality of information pieces being the bases for the encryption key.
摘要翻译： 响应于作为加密密钥的基础的多个信息片而生成加密密钥。 响应于生成的加密密钥，原始信息被加密成加密结果信息。 加密结果信息被分成单位。 每个单元都加载有用于识别作为加密密钥的基础的多个信息段的加密控制信息。
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公开(公告)号：US07155011B2
公开(公告)日：2006-12-26
申请号：US10092544
申请日：2002-03-08
CPC分类号： G11B20/0021 , G11B20/00086 , G11B20/00507 , H04L9/0625 , H04L2209/24
摘要： The present invention relates to an encryption method for encrypting information including a series of multiple unit blocks, one at a time, a decryption method for decrypting multiple encrypted unit blocks, one at a time, and a recording and reproducing apparatus that uses those methods. The seed of an encryption key for encrypting each unit block and the seed of an encryption key for decrypting each encrypted unit block, which are used by those methods and the recording and reproducing apparatus, are based on a unit block that is one or more unit blocks before the current unit block in a reproduction order or on information generated by encrypting one or more unit blocks before the current unit block. Alternatively, the seed of an encryption key for encrypting each unit block and the seed of an encryption key for decrypting each encrypted unit block are information based on an encryption key for encrypting a unit block before the current unit block in a reproduction order.
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公开(公告)号：US06889323B2
公开(公告)日：2005-05-03
申请号：US09726434
申请日：2000-12-01
IPC分类号： H04N5/91 , G06F21/10 , G06F21/24 , G10K15/02 , G11B20/10 , H04H20/00 , H04H60/16 , H04H60/23 , H04L9/08 , H04L9/32 , H04N7/167 , H04N21/2347 , H04N21/266 , H04N21/4405 , G06F1/24
CPC分类号： H04H60/23 , H04H60/16 , H04L9/0838 , H04L9/0866 , H04L2209/60
摘要： A signal representative of a key is generated from authenticator-value information and key base information. The authenticator-value information represents a specified authenticator value. The key base information contains identification information which is set to reproduce the specified authenticator value according to a predetermined degeneration function. Contents information is encrypted into encryption-resultant contents information in response to the key signal. The key base information and the encryption-resultant contents information are transmitted or recorded.
摘要翻译： 代表密钥的信号是从验证器值信息和密钥基础信息生成的。 验证器值信息表示指定的认证器值。 密钥基础信息包含根据预定的退化函数被设置为再现指定的认证符值的识别信息。 响应于密钥信号，内容信息被加密成加密结果内容信息。 密钥基础信息和加密结果内容信息被发送或记录。
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7.发明申请MPEG picture data recording apparatus, MPEG picture data recording method, MPEG picture data recording medium, MPEG picture data generating apparatus, MPEG picture data reproducing apparatus, and MPEG picture data reproducing method 有权MPEG图像数据记录装置，MPEG图像数据记录方法，MPEG图像数据记录介质，MPEG图像数据生成装置，MPEG图像数据再现装置和MPEG图像数据再现方法公开(公告)号：US20080044156A1
公开(公告)日：2008-02-21
申请号：US11898251
申请日：2007-09-11
IPC分类号： G11B27/00
CPC分类号： G11B20/10527 , G11B27/034 , G11B27/036 , G11B2020/10685 , G11B2020/1074 , G11B2220/20
摘要： Executes a re-encoding after decoding data of a connection section A of a first MPEG picture data. This re-encoding is executed based on a control such that a transition of a VBV buffer occupation value starts from a VBV buffer occupation value at a position a and ends with a VBV buffer occupation value at a position d. Up to the position a of the first MPEG picture data, the first MPEG picture data is reproduced. Next, re-encoded MPEG picture data of the connection section A is reproduced. Thereafter, the data is connected to the position d of a second MPEG picture data, and the second MPEG picture data of the position d and after is reproduced.
摘要翻译： 在解码第一MPEG图像数据的连接部分A的数据之后执行重新编码。 基于控制使得VBV缓冲器占用值的转变从位置a处的VBV缓冲器占有值开始并以位置d处的VBV缓冲器占有值结束的控制来执行该重新编码。 直到第一MPEG图像数据的位置a，再现第一MPEG图像数据。 接下来，再现连接部分A的重新编码的MPEG图像数据。 此后，将数据连接到第二MPEG图像数据的位置d，并再现位置d和之后的第二MPEG图像数据。
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8.发明授权MPEG picture data recording apparatus, MPEG picture data recording method, MPEG picture data recording medium, MPEG picture data generating apparatus, MPEG picture data reproducing apparatus, and MPEG picture data reproducing method 有权MPEG图像数据记录装置，MPEG图像数据记录方法，MPEG图像数据记录介质，MPEG图像数据生成装置，MPEG图像数据再现装置和MPEG图像数据再现方法公开(公告)号：US07292782B2
公开(公告)日：2007-11-06
申请号：US09961298
申请日：2001-09-25
IPC分类号： H04N7/26
CPC分类号： G11B20/10527 , G11B27/034 , G11B27/036 , G11B2020/10685 , G11B2020/1074 , G11B2220/20
摘要： Executes a re-encoding after decoding data of a connection section A of a first MPEG picture data. This re-encoding is executed based on a control such that a transition of a VBV buffer occupation value starts from a VBV buffer occupation value at a position a and ends with a VBV buffer occupation value at a position d. Up to the position a of the first MPEG picture data, the first MPEG picture data is reproduced. Next, re-encoded MPEG picture data of the connection section A is reproduced. Thereafter, the data is connected to the position d of a second MPEG picture data, and the second MPEG picture data of the position d and after is reproduced.
摘要翻译： 在解码第一MPEG图像数据的连接部分A的数据之后执行重新编码。 基于控制使得VBV缓冲器占用值的转变从位置a处的VBV缓冲器占有值开始并以位置d处的VBV缓冲器占有值结束的控制来执行该重新编码。 直到第一MPEG图像数据的位置a，再现第一MPEG图像数据。 接下来，再现连接部分A的重新编码的MPEG图像数据。 此后，将数据连接到第二MPEG图像数据的位置d，并再现位置d和之后的第二MPEG图像数据。
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公开(公告)号：US07024561B2
公开(公告)日：2006-04-04
申请号：US10023838
申请日：2001-12-21
IPC分类号： G06F11/30
CPC分类号： G11B20/00086 , G06F21/10 , G11B20/00166 , G11B20/0021 , G11B20/00492 , G11B20/0084 , H04N5/913 , H04N7/1675 , H04N21/2541 , H04N21/4334 , H04N21/4335 , H04N21/4405 , H04N21/4408 , H04N21/4623 , H04N21/835 , H04N21/8355 , H04N2005/91364
摘要： A recording apparatus generates key information based at least on contents reproduction permission information, encrypts contents based on the key information, and records the encrypted contents and recording date/time information on a recording medium. A reproducing apparatus reads the encrypted contents and the recording date/time information from the recording medium, acquires reproduction date/time information on the encrypted contents and, based on the recording date/time information that was read, the reproduction date/time information, and reproduction permission limit information on the encrypted contents, generates contents reproduction permission information indicating that the encrypted contents maybe reproduced. The reproducing apparatus generates key information based at least on the contents reproduction permission information and decrypts the encrypted contents that were read.
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10.发明授权MPEG picture data recording apparatus, MPEG picture data recording method, MPEG picture data recording medium, MPEG picture data generating apparatus, MPEG picture data reproducing apparatus, and MPEG picture data reproducing method 有权MPEG图像数据记录装置，MPEG图像数据记录方法，MPEG图像数据记录介质，MPEG图像数据生成装置，MPEG图像数据再现装置和MPEG图像数据再现方法公开(公告)号：US08260122B2
公开(公告)日：2012-09-04
申请号：US11898253
申请日：2007-09-11
CPC分类号： G11B20/10527 , G11B27/034 , G11B27/036 , G11B2020/10685 , G11B2020/1074 , G11B2220/20
摘要： Executes a re-encoding after decoding data of a connection section A of a first MPEG picture data. This re-encoding is executed based on a control such that a transition of a VBV buffer occupation value starts from a VBV buffer occupation value at a position a and ends with a VBV buffer occupation value at a position d. Up to the position a of the first MPEG picture data, the first MPEG picture data is reproduced. Next, re-encoded MPEG picture data of the connection section A is reproduced. Thereafter, the data is connected to the position d of a second MPEG picture data, and the second MPEG picture data of the position d and after is reproduced.
摘要翻译： 在解码第一MPEG图像数据的连接部分A的数据之后执行重新编码。 基于控制使得VBV缓冲器占用值的转变从位置a处的VBV缓冲器占有值开始并以位置d处的VBV缓冲器占有值结束的控制来执行该重新编码。 直到第一MPEG图像数据的位置a，再现第一MPEG图像数据。 接下来，再现连接部分A的重新编码的MPEG图像数据。 此后，将数据连接到第二MPEG图像数据的位置d，并再现位置d和之后的第二MPEG图像数据。
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