Digital signal recording/reproducing apparatus, receiving apparatus
    1.
    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

    CPC classification number: G11B20/00746 G11B20/00086 G11B20/0084

    Abstract: 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.

    Abstract translation: 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。

    Method of judging digital watermark information
    6.
    发明授权
    Method of judging digital watermark information 有权
    判断数字水印信息的方法

    公开(公告)号:US06665417B1

    公开(公告)日:2003-12-16

    申请号:US09452467

    申请日:1999-12-02

    Abstract: A digital watermark information judging method is provided for detecting digital watermark information which is embedded in at least one element of digital data by altering at least one data value of the element. The method first estimates the data value of the element by using data values of at least two neighboring elements of data located near the element, then compares the estimated data value with an actual data value of the element to detect the amount of the alteration, and judges the presence and value of the digital watermark information based on the amount of the alteration.

    Abstract translation: 提供一种数字水印信息判断方法,用于通过改变元素的至少一个数据值来检测嵌入在数字数据的至少一个元素中的数字水印信息。 该方法首先通过使用位于元素附近的数据的至少两个相邻元素的数据值来估计元素的数据值,然后将估计的数据值与该元素的实际数据值进行比较,以检测该变化的量,以及 基于改变量判断数字水印信息的存在和价值。

    Method of authenticating digital-watermark pictures
    7.
    发明授权
    Method of authenticating digital-watermark pictures 有权
    认证数字水印图片的方法

    公开(公告)号:US06418232B1

    公开(公告)日:2002-07-09

    申请号:US09383199

    申请日:1999-08-26

    CPC classification number: G06T1/0064

    Abstract: An extraction process includes the steps of carrying out a geometric transformation on a picture being inspected to transform the size of the picture being inspected into a reduced scale of an original picture; creating a plurality of degraded original pictures with different types each obtained as a result of degradation of the original picture; creating a plurality of differential pictures by subtraction of the degraded original pictures with different types from the picture being inspected with a transformed size to cancel degradation components in the picture being inspected with a transformed size; and extracting the information corresponding to the authentication information.

    Abstract translation: 提取处理包括对被检查的图像进行几何变换以将被检查的图像的大小变换为原始图像的缩小比例的步骤; 创建由于原始图像的劣化而获得的多个具有不同类型的退化原始图片; 通过用经变换的大小从被检查的图像中减去具有不同类型的劣化的原始图像来消除多个差分图像,以消除正在被检测的经过变换的大小的图像中的劣化分量; 并提取与认证信息相对应的信息。

    Method and device for managing computer network
    8.
    发明授权
    Method and device for managing computer network 有权
    管理计算机网络的方法和设备

    公开(公告)号:US06311277B1

    公开(公告)日:2001-10-30

    申请号:US09155153

    申请日:1998-09-22

    CPC classification number: H04L63/123 H04L63/1416 H04L63/145 H04L67/06

    Abstract: A method and a device for managing a computer network, especially a technique for ensuring the security of a network. A computer network system in which computers are connected to each other through transmission lines, each computer stores the data which constitutes a moving type software exclusively used for security and transmitted together with a message when the computer transmits the message to another computer of the system, and executes the moving type software by using the stored data upon receiving a message from another computer.

    Abstract translation: 一种用于管理计算机网络的方法和装置,特别是用于确保网络安全性的技术。 一种计算机网络系统,其中计算机通过传输线相互连接,每台计算机存储组成专门用于安全的移动型软件的数据,并在计算机将该消息发送到系统的另一计算机时与消息一起发送, 并且在从另一计算机接收到消息时通过使用所存储的数据来执行移动型软件。

    Method of watermarking for binary images
    10.
    发明授权
    Method of watermarking for binary images 失效
    二进制图像水印方法

    公开(公告)号:US07499565B2

    公开(公告)日:2009-03-03

    申请号:US10841842

    申请日:2004-05-10

    Abstract: A technology of digital watermarking for binary images (including documents) is provided, which is capable of adjusting the amount of information to be embedded while avoiding the deterioration of image quality as far as possible. The watermark information is inserted by giving the standard for judgment of modification and the order of preference for modification according to the characteristic properties of the human visual sense for binary images and performing modification on pixels sequentially in the descending order of preference.

    Abstract translation: 提供了一种用于二进制图像(包括文档)的数字水印技术,其能够尽可能地避免图像质量的恶化来调整要嵌入的信息量。 通过给出用于二进制图像的人类视觉特性的修改标准和修改偏好顺序来插入水印信息,并以优先级顺序依次对像素进行修改。

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