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    • 1. 发明公开
    • Portable digital content device and methods for use therewith
    • Tragbare Digitalinhaltsvorrichtung und Verwendungsverfahren damit
    • EP2048613A1
    • 2009-04-15
    • EP08253032.0
    • 2008-09-15
    • SanDisk Corporation
    • Webster, Kurt F.Balma, Phillip J.MacDonald, MairiBarzilai, RonShmuel, AvrahamCarmeli, RanKoren, DavidRaines, Moshe
    • G06Q30/00
    • G06Q30/02G06Q30/0254
    • A portable digital content device and methods for use therewith are disclosed. In one embodiment, a portable digital content device and method are disclosed for tracking usage activity to support digital asset management in a mobile environment. In another embodiment, an offline/disconnected advertisement inventory management and advertisement decision system and method are disclosed. While these systems and methods can be used with any suitable portable digital content device, an exemplary portable digital content device is disclosed, which can be used for purposes in addition to or instead of implementing the usage activity tracking and advertisement decision system functions. Any of the embodiments described herein can be used alone or in combination.
    • 公开了一种便携式数字内容装置及其使用方法。 在一个实施例中,公开了便携式数字内容设备和方法,用于跟踪在移动环境中支持数字资产管理的使用活动。 在另一个实施例中,公开了一种离线/断开的广告库存管理和广告决策系统和方法。 虽然这些系统和方法可以与任何合适的便携式数字内容设备一起使用,但是公开了一种示例性便携式数字内容设备,其可以用于除了实现使用活动跟踪和广告决策系统功能之外或替代实施使用活动跟踪和广告决策系统功能。 本文描述的任何实施方案可以单独使用或组合使用。
    • 2. 发明公开
    • Memory system with versatile content control
    • 存储系统具有通用性内容控制
    • EP2189922A3
    • 2010-06-02
    • EP10002604.6
    • 2005-12-21
    • Sandisk CorporationDiscretix Technologies Ltd.
    • Jogand-Coulumb, FabriceHoltzman, MichaelQawani, BahmanBarzilai, RonHagai, Bar-el
    • G06F21/02
    • G06F21/79G06F21/31G06F21/6218G06F2221/2103
    • The owner of proprietor interest is in a better position to control access to the encrypted content in the medium if the encryption-decryption key is stored in the medium itself and substantially inaccessible to external devices. Only those host devices with the proper credentials are able to access the key. An access policy may be stored which grants different permissions (e.g. to different authorized entities) for accessing data stored in the medium. A system incorporating a combination of the two above features is particularly advantageous. On the one hand, the content owner or proprietor has the ability to control access to the content by using keys that are substantially inaccessible to external devices and at the same time has the ability to grant different permissions for accessing content in the medium. Thus, even where external devices gain access, their access may still be subject to the different permissions set by the content owner or proprietor recorded in the storage medium. When implemented in a flash memory, the above features result in a particularly useful medium for content protection. Many storage devices are not aware of file systems while many computer host devices read and write data in the form of files. The host device provides a key reference or ID, while the memory system generates a key value in response which is associated with the key ID, which is used as the handle through which the memory retains complete and exclusive control over the generation and use of the key value for cryptographic processes, while the host retains control of files.
    • 3. 发明公开
    • Versatile content control with partitioning
    • 通用内容控制与分区
    • EP2284758A3
    • 2011-10-05
    • EP10190137.9
    • 2005-12-21
    • Sandisk Corporation
    • Jagond-Coulomb, FabriceHoltzman, MichaelQawami, BahmanBarzilai, Ron
    • G06F21/00
    • G06F21/6209G06F21/6218G06F21/78
    • In some mobile storage devices, content protection is afforded by dividing the memory into separate areas where access to protected areas requires prior authentication. While such feature does provide some protection, it does not protect against a user who obtained a password by illicit means. Thus, another aspect of the invention is based on the recognition that a mechanism or structure may be provided to divide a memory into partitions and so that at least some data in the partitions can be encrypted with a key, so that in addition to authentication that is required for accessing some of the partitions, access to one or more keys may be required to decrypt the encrypted data in such partitions. In some applications, it may be more convenient to the user to be able to log in the memory system using one application, and then be able to use different applications to access protected content without having to log in again. In such event, all of the content that the user wishes to access in this manner may be associated with a first account, so that all such content can be accessed via different applications (e.g. music player, email, cellular communication etc.) without having to log in multiple times. Then a different set of authentication information may then be used for logging in to access protected content that is in an account different from the first account, even where the different accounts are for the same user or entity.
    • 4. 发明公开
    • Memory system with versatile content control
    • Speichersystem mit Vielseitiger Inhaltssteuerung
    • EP2189922A2
    • 2010-05-26
    • EP10002604.6
    • 2005-12-21
    • Sandisk CorporationDiscretix Technologies Ltd.
    • Jogand-Coulumb, FabriceHoltzman, MichaelQawani, BahmanBarzilai, RonHagai, Bar-el
    • G06F21/02
    • G06F21/79G06F21/31G06F21/6218G06F2221/2103
    • The owner of proprietor interest is in a better position to control access to the encrypted content in the medium if the encryption-decryption key is stored in the medium itself and substantially inaccessible to external devices. Only those host devices with the proper credentials are able to access the key. An access policy may be stored which grants different permissions (e.g. to different authorized entities) for accessing data stored in the medium. A system incorporating a combination of the two above features is particularly advantageous. On the one hand, the content owner or proprietor has the ability to control access to the content by using keys that are substantially inaccessible to external devices and at the same time has the ability to grant different permissions for accessing content in the medium. Thus, even where external devices gain access, their access may still be subject to the different permissions set by the content owner or proprietor recorded in the storage medium. When implemented in a flash memory, the above features result in a particularly useful medium for content protection. Many storage devices are not aware of file systems while many computer host devices read and write data in the form of files. The host device provides a key reference or ID, while the memory system generates a key value in response which is associated with the key ID, which is used as the handle through which the memory retains complete and exclusive control over the generation and use of the key value for cryptographic processes, while the host retains control of files.
    • 如果加密解密密钥存储在介质本身并且对外部设备基本不可访问,所有者感兴趣的所有者处于更好的位置以控制对介质中的加密内容的访问。 只有那些具有正确凭据的主机才能访问密钥。 可以存储访问策略,其允许用于访问存储在介质中的数据的不同许可(例如,到不同的授权实体)。 结合上述两个特征的组合的系统是特别有利的。 一方面,内容所有者或所有者具有通过使用外部设备基本上不可访问的密钥来控制对内容的访问的能力,并且同时具有授予访问媒体中的内容的不同权限的能力。 因此,即使在外部设备获得访问的情况下,他们的访问仍然可以受到由存储介质中记录的内容所有者或所有者设置的不同的许可。 当在闪存中实现时,上述特征导致用于内容保护的特别有用的介质。 许多存储设备不知道文件系统,而许多计算机主机设备以文件的形式读取和写入数据。 主机设备提供密钥参考或ID,而存储器系统生成响应中的键值,该密钥值与密钥ID相关联,该密钥ID用作存储器保留完整的句柄,并且专用于控制生成和使用 加密过程的关键值,而主机保留对文件的控制。
    • 7. 发明公开
    • Versatile content control with partitioning
    • 通过分区进行多功能内容控制
    • EP2284758A2
    • 2011-02-16
    • EP10190137.9
    • 2005-12-21
    • Sandisk Corporation
    • Jagond-Coulomb, FabriceHoltzman, MichaelQawami, BahmanBarzilai, Ron
    • G06F21/00
    • G06F21/6209G06F21/6218G06F21/78
    • In some mobile storage devices, content protection is afforded by dividing the memory into separate areas where access to protected areas requires prior authentication. While such feature does provide some protection, it does not protect against a user who obtained a password by illicit means. Thus, another aspect of the invention is based on the recognition that a mechanism or structure may be provided to divide a memory into partitions and so that at least some data in the partitions can be encrypted with a key, so that in addition to authentication that is required for accessing some of the partitions, access to one or more keys may be required to decrypt the encrypted data in such partitions. In some applications, it may be more convenient to the user to be able to log in the memory system using one application, and then be able to use different applications to access protected content without having to log in again. In such event, all of the content that the user wishes to access in this manner may be associated with a first account, so that all such content can be accessed via different applications (e.g. music player, email, cellular communication etc.) without having to log in multiple times. Then a different set of authentication information may then be used for logging in to access protected content that is in an account different from the first account, even where the different accounts are for the same user or entity.
    • 在一些移动存储设备中,内容保护通过将内存划分为单独的区域来提供,在这些区域中访问保护区需要事先验证。 尽管此功能确实提供了一些保护,但它不能防止以非法手段获取密码的用户。 因此,本发明的另一方面基于这样的认识,即可以提供一种机制或结构来将存储器划分成分区,并且使得分区中的至少一些数据可以用密钥加密,使得除了认证 是访问某些分区所必需的,则可能需要访问一个或多个密钥来解密这些分区中的加密数据。 在某些应用程序中,用户可以更方便地使用一个应用程序登录存储器系统,然后可以使用不同的应用程序访问受保护的内容,而无需再次登录。 在这种情况下,用户希望以这种方式访问​​的所有内容可以与第一账户相关联,使得所有这样的内容可以经由不同的应用(例如音乐播放器,电子邮件,蜂窝通信等)被访问,而无需 多次登录。 然后,不同的认证信息组然后可以被用于登录以访问与第一账户不同的账户中的受保护内容,即使在不同账户是针对同一用户或实体的情况下。