CONTROLLING ACCESS TO PROTECTED DIGITAL CONTENT
    1.
    发明申请
    CONTROLLING ACCESS TO PROTECTED DIGITAL CONTENT 审中-公开
    控制访问受保护的数字内容

    公开(公告)号:WO02069070A3

    公开(公告)日:2003-08-14

    申请号:PCT/GB0200727

    申请日:2002-02-20

    Applicant: IBM IBM UK

    Abstract: The present invention provides a technique for preventing an illegal use of contents by users when an expiration date is established for the use of the contents. Contents or contents execution programs have information indicative of an expiration date or time. The expiration date information is embedded into, for example, external files, contents or contents execution programs. The expiration date information could be a start of use time, an end of use time, and a last time of use, which are used as authentication data to conduct authentication when making use of the contents (e.g., when executing the contents execution program). The technique for authentication is that two requirements should be satisfied when using the contents, including (1) that the current date acquired from the system timer is between the start of use time and the end of use time (expiration date); and (2) the current time is after the last time of use (last date of access).

    Abstract translation: 本发明提供了一种当为使用内容而建立失效日期时防止用户非法使用内容的技术。 内容或内容执行程序具有指示有效期限或时间的信息。 到期日期信息嵌入到例如外部文件,内容或内容执行程序中。 过期日期信息可以是使用时间的使用时间的开始,使用时间的结束和最后的使用时间,这些使用时间用作认证数据以在使用内容时进行认证(例如,当执行内容执行程序时) 。 验证技术是在使用内容时应满足两个要求,其中包括:(1)从系统定时器获取的当前日期在使用开始时间与使用时间结束(有效期)之间; 和(2)当前时间是在最后一次使用之后(最后访问日期)。

    2.
    发明专利
    未知

    公开(公告)号:AT280408T

    公开(公告)日:2004-11-15

    申请号:AT02700442

    申请日:2002-02-20

    Applicant: IBM

    Abstract: The present invention provides for deterring and/or preventing an illegal use of contents by users when an expiration date is established for the use of the contents. Contents or contents execution programs have information indicative of an expiration date. In an example, expiration date information is embedded into external files, contents or contents execution programs. The expiration date information could be a start, end or last date of use, which is used as authentication data to conduct authentication when making use of the contents. An example embodiment has two requirements satisfied when using the contents in order to execute the execution program, including (1) the current date acquired from the system timer is between the start date of use and the end date of use (expiration date); and (2) the current date is posterior to the last date of use (last date of access).

    3.
    发明专利
    未知

    公开(公告)号:DE60201662D1

    公开(公告)日:2004-11-25

    申请号:DE60201662

    申请日:2002-02-20

    Applicant: IBM

    Abstract: The present invention provides for deterring and/or preventing an illegal use of contents by users when an expiration date is established for the use of the contents. Contents or contents execution programs have information indicative of an expiration date. In an example, expiration date information is embedded into external files, contents or contents execution programs. The expiration date information could be a start, end or last date of use, which is used as authentication data to conduct authentication when making use of the contents. An example embodiment has two requirements satisfied when using the contents in order to execute the execution program, including (1) the current date acquired from the system timer is between the start date of use and the end date of use (expiration date); and (2) the current date is posterior to the last date of use (last date of access).

    4.
    发明专利
    未知

    公开(公告)号:DE60201662T2

    公开(公告)日:2005-10-13

    申请号:DE60201662

    申请日:2002-02-20

    Applicant: IBM

    Abstract: The present invention provides for deterring and/or preventing an illegal use of contents by users when an expiration date is established for the use of the contents. Contents or contents execution programs have information indicative of an expiration date. In an example, expiration date information is embedded into external files, contents or contents execution programs. The expiration date information could be a start, end or last date of use, which is used as authentication data to conduct authentication when making use of the contents. An example embodiment has two requirements satisfied when using the contents in order to execute the execution program, including (1) the current date acquired from the system timer is between the start date of use and the end date of use (expiration date); and (2) the current date is posterior to the last date of use (last date of access).

    Controlling access to protected digital content

    公开(公告)号:AU2002233515A1

    公开(公告)日:2002-09-12

    申请号:AU2002233515

    申请日:2002-02-20

    Applicant: IBM

    Abstract: The present invention provides for deterring and/or preventing an illegal use of contents by users when an expiration date is established for the use of the contents. Contents or contents execution programs have information indicative of an expiration date. In an example, expiration date information is embedded into external files, contents or contents execution programs. The expiration date information could be a start, end or last date of use, which is used as authentication data to conduct authentication when making use of the contents. An example embodiment has two requirements satisfied when using the contents in order to execute the execution program, including (1) the current date acquired from the system timer is between the start date of use and the end date of use (expiration date); and (2) the current date is posterior to the last date of use (last date of access).

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