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公开(公告)号：US06728408B1
公开(公告)日：2004-04-27
申请号：US09144467
申请日：1998-09-01
IPC分类号： G06K900
CPC分类号： G06T1/0021 , G06T2201/0051 , G06T2201/0061 , H04N1/32203 , H04N1/32208 , H04N1/32229 , H04N1/32251 , H04N2201/3233 , H04N2201/327
摘要： A data embedding method and apparatus and a data reproducing method and apparatus are provided which can apply a digital watermark to various contents. Instead of embedding watermarking information in respective pixels or by using a relation between pixels, the watermarking information is embedded as a position pattern of changed pixels in the contents. Reliability comparable with conventional techniques can be obtained irrespective of a change in a smaller number of pixels for the contents.
摘要翻译： 提供了可以将数字水印应用于各种内容的数据嵌入方法和装置以及数据再现方法和装置。 不是将水印信息嵌入各像素中，或者通过使用像素之间的关系，水印信息被嵌入作为内容中的改变像素的位置图案。 可以获得与常规技术相当的可靠性，而不管内容物的较少数量的像素的变化。
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22.发明授权Receiving device, recording and reproducing device and receiving/recording-reproducing system for digital broadcast signal 失效用于数字广播信号的接收装置，记录和再现装置以及接收/记录再现系统公开(公告)号：US06674858B1
公开(公告)日：2004-01-06
申请号：US09208443
申请日：1998-12-10
申请人： Hiroyuki Kimura , Takao Arai , Toshifumi Takeuchi
发明人： Hiroyuki Kimura , Takao Arai , Toshifumi Takeuchi
IPC分类号： H04N7167
CPC分类号： H04N21/4334 , H04N5/913 , H04N7/1675 , H04N21/4405 , H04N21/4408 , H04N21/4623 , H04N21/4627 , H04N21/8355 , H04N21/8358 , H04N2005/91328 , H04N2005/91335 , H04N2005/91364
摘要： A receiving device comprises a signal demodulator circuit for demodulating an encrypted video signal and attribute information including information for decoding an encryption, an attribute information identifying circuit for identifying and outputting the attribute information, and a descramble circuit for unscrambling the video signal obtained from the signal demodulator circuit, based on the output produced from the attribute information identifying circuit. A signal re-scrambled in accordance with a device ID signal is recorded in a recording and reproducing device. Further, the recording of the signal is controlled based on the output obtained from the attribute information identifying circuit.
摘要翻译： 接收装置包括用于解调加密视频信号的信号解调器电路和包括用于解码加密的信息的属性信息，用于识别和输出属性信息的属性信息识别电路，以及用于对从信号获得的视频信号进行解扰的解扰电路 解调器电路，基于从属性信息识别电路产生的输出。 根据设备ID信号重新加扰的信号被记录在记录和再现设备中。 此外，基于从属性信息识别电路获得的输出来控制信号的记录。
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23.发明授权Reproducing method and apparatus, for a video signal having copy control information 有权用于具有复制控制信息的视频信号的再现方法和装置公开(公告)号：US06434322B1
公开(公告)日：2002-08-13
申请号：US09148325
申请日：1998-09-04
申请人： Hiroyuki Kimura , Takao Arai , Toshifumi Takeuchi
发明人： Hiroyuki Kimura , Takao Arai , Toshifumi Takeuchi
IPC分类号： H04N591
CPC分类号： G06T1/0028 , G11B20/00086 , G11B20/00768 , G11B20/00884 , H04N5/913 , H04N2005/91328 , H04N2005/91335
摘要： Electronic watermark information obtained by changing a luminance value of a luminance signal in a video signal and a copy generation management signal (CGMS signal) inserted into an area out of a scan region of the video signal are recorded into a recording medium. A reproducing apparatus comprises an electronic watermark information detecting circuit, a CGMS signal detecting circuit, a control circuit to which detected electronic watermark information and CGMS signal are supplied, and a video signal processing circuit controlled by an output of the control circuit. When the electronic watermark information and the CGMS signal have a rational relation, the video signal processing circuit is controlled to output the video signal.
摘要翻译： 将通过改变视频信号中的亮度信号的亮度值和插入到视频信号的扫描区域中的区域中的复制产生管理信号（CGMS信号）获得的电子水印信息被记录在记录介质中。 一种再现装置包括电子水印信息检测电路，CGMS信号检测电路，检测到的电子水印信息和CGMS信号的控制电路以及由控制电路的输出控制的视频信号处理电路。 当电子水印信息和CGMS信号具有合理的关系时，控制视频信号处理电路输出视频信号。
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公开(公告)号：US6154806A
公开(公告)日：2000-11-28
申请号：US339816
申请日：1999-06-25
IPC分类号： G11B20/10 , G11B7/00 , G11B7/0037 , G11B7/004 , G11B7/0045 , G11B7/005 , G11B7/007 , G11B7/30 , G11B19/12 , G11B20/12 , G11B27/00 , G11B27/034 , G11B27/10 , G11B27/30 , G11B27/32 , B11B7/24
CPC分类号： G11B20/1217 , G11B19/12 , G11B27/034 , G11B27/105 , G11B27/3027 , G11B27/329 , G11B7/0037 , G11B7/0045 , G11B7/005 , G11B7/00745 , G11B20/1252 , G11B2007/0013 , G11B2020/1229 , G11B2020/1232 , G11B2020/1267 , G11B2020/1295 , G11B2220/213 , G11B2220/237 , G11B2220/2545
摘要： A method of recording digital signals on a disk having at least a first recording surface and a second recording surface. The digital signals are in the form of a data frame including a lead-in block and n data blocks. The lead-in block has a same format as the n data blocks. The method includes the steps of assigning n block addresses to respective ones of the n data blocks, assigning, to each of the n data blocks, information identifying an area on the disk in which a respective one of the n data blocks is to be recorded, recording m data block (0
摘要翻译： 一种在具有至少第一记录表面和第二记录表面的盘上记录数字信号的方法。 数字信号是包括导入块和n个数据块的数据帧的形式。 导入块具有与n个数据块相同的格式。 该方法包括以下步骤：将n个块地址分配给n个数据块中的相应的n个数据块，向n个数据块中的每个数据块分配用于识别在其中要记录n个数据块中的相应一个的盘上的区域的信息 在盘的第一记录表面上记录n个数据块的m个数据块（0
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公开(公告)号：US20050058286A1
公开(公告)日：2005-03-17
申请号：US10959081
申请日：2004-10-07
CPC分类号： H04N5/913 , H04N5/85 , H04N9/8042 , H04N2005/91335 , H04N2005/91364
摘要： Information or contents cannot be reproduced even from a regular storage medium which is encrypted in accordance with a predetermined encryption system, due to erroneous detection of watermarks. Detection of the watermarks and restriction over reproduction depending thereon is conducted only in a case where the medium is not encrypted. In case of detecting that the data is not encrypted in accordance with a predetermined encryption system by an encryption detection circuit and when the watermarks are detected by a watermark detection circuit, reproduction of the data is stopped by a reproduction restricting circuit. In a case that it is detected to be encrypted in the predetermined encryption system by the encryption detection circuit, the reproduction restricting circuit will not stop the reproduction thereof.
摘要翻译： 由于水印的错误检测，信息或内容甚至不能由根据预定加密系统加密的常规存储介质再现。 水印的检测和依赖于其的再现的限制仅在介质未加密的情况下进行。 在检测到数据未被加密检测电路根据预定的加密系统加密的情况下，并且当由水印检测电路检测到水印时，由再现限制电路停止数据的再现。 在通过加密检测电路检测到在预定加密系统中被加密的情况下，再现限制电路将不会停止其再现。
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公开(公告)号：US06332174B1
公开(公告)日：2001-12-18
申请号：US09342175
申请日：1999-06-29
IPC分类号： B11B724
CPC分类号： G11B20/1217 , G11B7/0037 , G11B7/0045 , G11B7/005 , G11B7/00745 , G11B19/12 , G11B20/1252 , G11B27/034 , G11B27/105 , G11B27/3027 , G11B27/329 , G11B2007/0013 , G11B2020/1229 , G11B2020/1232 , G11B2020/1267 , G11B2020/1295 , G11B2220/213 , G11B2220/237 , G11B2220/2545
摘要： An apparatus for reproducing digital signals recorded on a disk having first and second recording surfaces. The digital signals are in the form of a data frame including a lead-in block and n data blocks. The lead-in block has a same format as the n data blocks. n block addresses are assigned to the n data blocks. Information identifying an area on the disk in which the n data blocks is recorded is assigned to the n data blocks. m data blocks (0
摘要翻译： 一种用于再现记录在具有第一和第二记录表面的盘上的数字信号的装置。 数字信号是包括导入块和n个数据块的数据帧的形式。 导入块具有与n个数据块相同的格式。 n个块地址被分配给n个数据块。 识别磁盘上记录有n个数据块的区域的信息被分配给n个数据块。 m个数据块（0
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公开(公告)号：US5920579A
公开(公告)日：1999-07-06
申请号：US8906
申请日：1998-01-16
CPC分类号： G11B20/1813 , H04N5/945 , G11B2020/183 , H04N5/9262
摘要： A quick retry operation is possible by outputting an error flag pertaining to a sector after error correction processing of digital data. When an output of an error detection flag unit for a correction block indicates the existence of an uncorrectable error, the sectors are checked to see if the sectors corresponding to retrieved data include any error or not based on output from a sector error flag register B. When the sectors are judged as error, signals are retrieved again from a storage medium, restored in a memory, and an error correction processing is repeated again. The data such as that of P pictures or B pictures of MPEG which can be reproduced even with errors are output even when the error detection flag unit indicates the existence of the uncorrectable error. It enables identification of the sectors with the errors and simplifies the following operations pertaining to the error at a data receiving side by outputting the error flag along with the data.
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公开(公告)号：US06657831B2
公开(公告)日：2003-12-02
申请号：US10187298
申请日：2002-07-02
IPC分类号： G11B509
CPC分类号： G11B20/1813 , G11B20/10527 , G11B20/1208 , G11B20/1809 , G11B27/3027 , G11B2020/10537 , G11B2220/90
摘要： In an apparatus for recording and reproducing a burst-like digital information signal, a methd capable of predicting the time of occurrence of a header indicating the head of the first data of a digital information signal during its reproduction from a recording medium. The digital signal includes a plurality of data blocks each including a header indicative of the head of the block, and each header includes the address of the block. During recording of the digital signal on the recording medium, a plurality of headers which are substantially the same as the headers of the data blocks and including addresses having given relations with the addresses of the data blocks are inserted in a clock regenerating signal recorded before the digital signal for regenerating the clocks for the signal. The headers are inserted at a period equal to the length of each data block so as to be synchronized with the headers of the data blocks.
摘要翻译： 在用于记录和再现突发式数字信息信号的装置中，能够从记录介质预测在其再现期间指示数字信息信号的第一数据的头的头的出现时间的方法。 数字信号包括多个数据块，每个数据块包括指示块的头部的头部，并且每个头部包括块的地址。 在记录介质上记录数字信号的过程中，将与数据块的报头基本相同的多个报头与包含数据块的地址的地址对应的地址进行插入， 数字信号用于再生信号的时钟。 以等于每个数据块的长度的周期插入报头，以便与数据块的报头同步。
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公开(公告)号：US06233649B1
公开(公告)日：2001-05-15
申请号：US09342045
申请日：1999-06-28
IPC分类号： G11B502
CPC分类号： G11B20/1217 , G11B7/0037 , G11B7/0045 , G11B7/005 , G11B7/00745 , G11B19/12 , G11B20/1252 , G11B27/034 , G11B27/105 , G11B27/3027 , G11B27/329 , G11B2007/0013 , G11B2020/1229 , G11B2020/1232 , G11B2020/1267 , G11B2020/1295 , G11B2220/213 , G11B2220/237 , G11B2220/2545
摘要： A method of reproducing digital signals recorded on a disk having first and second recording surfaces. The digital signals are in the form of a data frame including a lead-in block and n data blocks. The lead-in block has a same format as the n data blocks. n block addresses are assigned to the n data blocks. Information identifying an area on the disk in which the n data blocks is recorded is assigned to the n data blocks. m data blocks (0
摘要翻译： 一种再现记录在具有第一和第二记录表面的盘上的数字信号的方法。 数字信号是包括导入块和n个数据块的数据帧的形式。 导入块具有与n个数据块相同的格式。 n个块地址被分配给n个数据块。 识别磁盘上记录有n个数据块的区域的信息被分配给n个数据块。 m个数据块（0
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公开(公告)号：US07019927B2
公开(公告)日：2006-03-28
申请号：US10673608
申请日：2003-09-30
IPC分类号： G11B5/09
CPC分类号： G11B20/1813 , G11B20/10527 , G11B20/1208 , G11B20/1809 , G11B27/3027 , G11B2020/10537 , G11B2220/90
摘要： In an apparatus for recording and reproducing a burst-like digital information signal, a method capable of predicting the time of occurrence of a header indicating the head of the first data of a digital information signal during its reproduction from a recording medium. The digital signal includes a plurality of data blocks each including a header indicative of the head of the block, and each header includes the address of the block. During recording of the digital signal on the recording medium, a plurality of headers which are substantially the same as the headers of the data blocks and including addresses having given relations with the addresses of the data blocks are inserted in a clock regenerating signal recorded before the digital signal for regenerating the clocks for the signal. The headers are inserted at a period equal to the length of each data block so as to be synchronized with the headers of the data blocks.
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