公开(公告)号：US10129429B2

公开(公告)日：2018-11-13

申请号：US12245605

申请日：2008-10-03

申请人： Rajan Samtani ,  Joel R. Meyer ,  Ravi K. Sharma

发明人： Rajan Samtani ,  Joel R. Meyer ,  Ravi K. Sharma

IPC分类号： H04N1/32 ,  G06F21/10 ,  G06T1/00 ,  H04N19/467 ,  G11B20/00

摘要： This disclosure describes novel methods for generating unique copies of content. One method combines the functions of the master copy and unique copy watermarks. In particular, the method generates a unique copy by varying the manner in which the master copy watermark is embedded in unique copies of a content item. In one embodiment, the master copy watermark is repeated within the content item and its location is varied in a unique pattern that comprises the unique copy watermark. The unique copy is generated by producing a copy in which master copy watermarks are embedded in a unique pattern. For instance in one embodiment, the locations of the master copy watermarks in the content item are represented as a vector of delta values in which each delta value corresponds to the distance between a corresponding instance of the master copy watermark, and a neighboring instance of the master copy watermark. This vector is stored in a transaction record in association with transaction information, such as information identifying the master copy and information associated with the unique copy. Other ways of representing the unique pattern of attributes of the master copy watermark are also possible. In other embodiments, properties of the master copy watermark other than its location are varied through the content. The unique copy watermark is conveyed in the vector of deltas in these properties of the master copy watermark. Some examples of these properties of the master copy watermark signal include phase characteristics (e.g., the phase shift of a watermark carrier signal), frequency magnitude characteristics, etc. These properties are varied in a manner that does not alter the information carried in the master copy watermark. However, it does provide a variation that creates a unique copy, and the unique copy watermark is conveyed in this variation. The variation in location of the instances of the master copy watermark can be in different domains, such as a spatial domain, a time domain, a time-space domain, a transform domain (including frequency transform domains), a compressed domain, etc.

公开(公告)号：US20090116686A1

公开(公告)日：2009-05-07

申请号：US12245605

申请日：2008-10-03

申请人： Rajan Samtani ,  Joel R. Meyer ,  Ravi K. Sharma

发明人： Rajan Samtani ,  Joel R. Meyer ,  Ravi K. Sharma

IPC分类号： G06K9/00

CPC分类号： H04N1/32149 ,  G06F21/10 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0064 ,  G11B20/00086 ,  G11B20/00869 ,  G11B20/00884 ,  H04N1/32299 ,  H04N19/467 ,  H04N2201/3233 ,  H04N2201/327

摘要： This disclosure describes novel methods for generating unique copies of content. One method combines the functions of the master copy and unique copy watermarks. In particular, the method generates a unique copy by varying the manner in which the master copy watermark is embedded in unique copies of a content item. In one embodiment, the master copy watermark is repeated within the content item and its location is varied in a unique pattern that comprises the unique copy watermark. The unique copy is generated by producing a copy in which master copy watermarks are embedded in a unique pattern. For instance in one embodiment, the locations of the master copy watermarks in the content item are represented as a vector of delta values in which each delta value corresponds to the distance between a corresponding instance of the master copy watermark, and a neighboring instance of the master copy watermark. This vector is stored in a transaction record in association with transaction information, such as information identifying the master copy and information associated with the unique copy. Other ways of representing the unique pattern of attributes of the master copy watermark are also possible. In other embodiments, properties of the master copy watermark other than its location are varied through the content. The unique copy watermark is conveyed in the vector of deltas in these properties of the master copy watermark. Some examples of these properties of the master copy watermark signal include phase characteristics (e.g., the phase shift of a watermark carrier signal), frequency magnitude characteristics, etc. These properties are varied in a manner that does not alter the information carried in the master copy watermark. However, it does provide a variation that creates a unique copy, and the unique copy watermark is conveyed in this variation. The variation in location of the instances of the master copy watermark can be in different domains, such as a spatial domain, a time domain, a time-space domain, a transform domain (including frequency transform domains), a compressed domain, etc.

公开(公告)号：US20070078777A1

公开(公告)日：2007-04-05

申请号：US11528680

申请日：2006-09-28

申请人： Thomas Demartini ,  Michael Raley ,  Xin Wang ,  Joseph Fung ,  Mai Nguyen ,  Guillermo Lao ,  Rajan Samtani ,  Eddie Chen ,  Kerry Miller

发明人： Thomas Demartini ,  Michael Raley ,  Xin Wang ,  Joseph Fung ,  Mai Nguyen ,  Guillermo Lao ,  Rajan Samtani ,  Eddie Chen ,  Kerry Miller

IPC分类号： G06Q99/00 ,  H04L9/00 ,  H04K1/00

CPC分类号： G06Q10/06 ,  G06F21/10 ,  G06Q50/184 ,  G06Q90/00 ,  G11B20/00086 ,  G11B20/00427 ,  G11B20/00659 ,  G11B20/00847

摘要： A system, method and computer program product for a digital content player having a DRM agent to perform rights management operations on a digital content package, including loading rights management instructions to be executed by the digital content player, the rights management instructions being associated with the digital content package, executing the rights management instructions on the digital content player, and loading supporting licenses associated with the digital content package for processing by the DRM agent. The DRM agent deciding whether to permit the rights management operations requested by the rights management instructions. Further exemplary embodiments include systems, methods and computer program products for associating usage rights with digital content packages, managing of digital rights tokens, managing of digital content packages having predetermined broadcast dates, preserving of usage rights when content is transferred between DRM environments, and distributing content packages.

摘要翻译： 一种用于具有DRM代理的数字内容播放器的系统，方法和计算机程序产品，用于对数字内容包进行权限管理操作，包括由数字内容播放器执行的载入权限管理指令，权限管理指令与 数字内容包，在数字内容播放器上执行权限管理指令，以及加载与数字内容包相关联的支持许可，以供DRM代理处理。 DRM代理决定是否允许由权限管理指令请求的权限管理操作。 另外的示例性实施例包括用于将使用权限与数字内容包相关联的系统，方法和计算机程序产品，数字权限令牌的管理，具有预定广播日期的数字内容包的管理，当在DRM环境之间传送内容时保留使用权限，以及分发 内容包。