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    Method of and apparatus for restricting copy of digital information, and apparatus for recording digital information
    2.
    发明授权
    Method of and apparatus for restricting copy of digital information, and apparatus for recording digital information 失效
    用于限制数字信息复制的方法和装置，以及用于记录数字信息的装置

    公开(公告)号：US06990584B1

    公开(公告)日：2006-01-24

    申请号：US09453719

    申请日：1999-12-03

    申请人： Hiroshi Yoshiura ,  Hiroyuki Kimura ,  Akira Ogino ,  Yoshiaki Moriyama ,  Kazumi Sugaya

    发明人： Hiroshi Yoshiura ,  Hiroyuki Kimura ,  Akira Ogino ,  Yoshiaki Moriyama ,  Kazumi Sugaya

    IPC分类号： H04L9/00 ,  G06F11/30 ,  H04N7/167

    CPC分类号： G06T1/0071 ,  G06T2201/0064 ,  H04N5/913 ,  H04N2005/91328 ,  H04N2005/91335 ,  H04N2005/9135

    摘要： An apparatus for restricting a copy of digital information is provided with a detecting device for detecting a first watermark, which is buried in the digital information and comprises a first signal generated on the basis of a first rule. A burying device buries a second watermark, which comprises a second signal generated on the basis of a second rule and having a structure different from that of the first signal, into the digital information if the first watermark is detected by the detecting device. A recording apparatus is provided with: an inputting device for inputting the digital information; the above mentioned copy restricting apparatus; and a recording device for recording the digital information in which the second watermark is buried by the burying device.

    摘要翻译： 一种用于限制数字信息的拷贝的装置设置有用于检测第一水印的检测装置，该第一水印被埋在数字信息中，并且包括基于第一规则生成的第一信号。 如果检测装置检测到第一水印，则掩埋装置将第二水印埋入数字信息中，所述第二水印包括基于第二规则生成的具有不同于第一信号的结构的第二信号。 记录装置具有：用于输入数字信息的输入装置; 上述复制限制装置; 以及用于记录第二水印被掩埋装置掩埋的数字信息的记录装置。

    Control method and apparatus for embedding information in data
    3.
    发明授权
    Control method and apparatus for embedding information in data 有权
    用于在数据中嵌入信息的控制方法和装置

    公开(公告)号：US06711276B1

    公开(公告)日：2004-03-23

    申请号：US09453578

    申请日：1999-12-03

    申请人： Hiroshi Yoshiura ,  Isao Echizen ,  Takao Arai ,  Hiroyuki Kimura ,  Toshifumi Takeuchi ,  Yoshiaki Moriyama ,  Kazumi Sugaya ,  Akira Ogino

    发明人： Hiroshi Yoshiura ,  Isao Echizen ,  Takao Arai ,  Hiroyuki Kimura ,  Toshifumi Takeuchi ,  Yoshiaki Moriyama ,  Kazumi Sugaya ,  Akira Ogino

    IPC分类号： G06K900

    CPC分类号： G06T1/0085 ,  G06T1/0028 ,  G06T2201/0065 ,  H04N19/467 ,  H04N19/51 ,  H04N19/61 ,  H04N21/23892 ,  H04N21/8358

    摘要： A watermark information embedding method, and apparatus, capable of suppressing the quality degradation of contents and increasing the survivability of embedded information. When embedding watermark information in moving picture data formed of a plurality of still picture frames arranged in time series, a motion vector representing a property specific to moving picture is detected for each of image blocks generated by dividing a target frame. According to a motion quantity, a pixel change factor specifying rule is selected for each block. Out of pixels permitted to be changed in luminance depending upon the state of an image in each block representing a property specific to still picture, as many pixels as a number specified by the selected rule are selected. Luminance change processing for forming watermark information is conducted on the selected pixels.

    摘要翻译： 一种水印信息嵌入方法和装置，其能够抑制内容的质量劣化并增加嵌入信息的生存性。 当将水印信息嵌入由以时间序列排列的多个静止图像帧形成的运动图像数据中时，针对通过划分目标帧而产生的每个图像块检测表示运动图像特有的属性的运动矢量。 根据运动量，为每个块选择像素变化因子指定规则。 根据表示静止图像特有的属性的每个块中的图像的状态，亮度允许变化的像素的数量被选择为与所选择的规则指定的数量一样多的像素。 对所选择的像素进行用于形成水印信息的亮度变化处理。

    Digital signal recording/reproducing apparatus, receiving apparatus
    4.
    发明授权
    Digital signal recording/reproducing apparatus, receiving apparatus 有权
    数字信号记录/再现装置，接收装置

    公开(公告)号：US08346061B2

    公开(公告)日：2013-01-01

    申请号：US11400675

    申请日：2006-04-07

    申请人： Toru Matsumura ,  Hiroshi Yoshiura ,  Hiroo Okamoto ,  Hiroyuki Kimura

    发明人： Toru Matsumura ,  Hiroshi Yoshiura ,  Hiroo Okamoto ,  Hiroyuki Kimura

    IPC分类号： H04N9/80

    CPC分类号： G11B20/00746 ,  G11B20/00086 ,  G11B20/0084

    摘要： The digital signal recording/reproducing apparatus inputs a digital signal having a control flag as to a temporary copy permission, and records the digital signal temporarily into a recording medium in accordance with conditions in the control flag, then reproducing the digital signal temporarily from the recording medium in accordance with the conditions in the control flag. The recording/reproducing of the temporary copy is permitted, depending on the following conditions: The recording medium's type, the reproducing point-in-time, the reproducing time-period, and the reproducing frequency. With this method employed, even in a program permitting no recording, the temporary recording/reproducing is permitted under a condition of being limited to the time-shift recording on the receiving side.

    摘要翻译： 数字信号记录/再现装置输入具有临时复制许可的控制标志的数字信号，并根据控制标志的条件将数字信号临时记录到记录介质中，然后从记录中临时再现数字信号 介质按照控制标志的条件。 根据以下条件允许临时拷贝的记录/再现：记录介质的类型，再现时间点，再现时间段和再现频率。 采用这种方法，即使在不允许记录的程序中，在被限制在接收侧的时移记录的条件下允许临时记录/再现。