New patents are issued by the USPTO on Tuesdays. Both of today's Spotlight Patents concern aspects of digital rights management. Assigned to Adobe, the first of today's patents addresses techniques for DRM using geographic and temporal traits. Assigned to Irdeto (NL), the second patent addresses techniques for controlling use of encrypted content by a plurality of client terminals each provided with a digital rights management (DRM) client and a content decryption module separate to the DRM client
9,928,374, "Digital rights management using geographic and temporal traits," assigned to Adobe.
Abstract
Digital rights management using geographic and temporal traits is described. In one or more implementations, a digital medium environment is configured to control access to at least on item of content by digital rights management functionality embedded as part of the content. Data is collected describing geographical traits of a location or temporal traits associated with a request received from the user to access the content. A determination is made from the data using a digital rights management module embedded as part of the content as to whether the geographical or temporal traits meet specified traits of a geographical behavior of a digital rights management policy enforced by the digital rights management module for the at least one item of the content. Responsive to a determination that the specified traits are met, access is permitted to the least one item of the content by the embedded digital rights management module.
9,928,350, "Digital rights management," assigned to Irdeto B.V. (NL).
Abstract
There is disclosed a method of controlling use of encrypted content by a plurality of client terminals each provided with a digital rights management (DRM) client and a content decryption module separate to the DRM client. First key information is provided for use by one or more selected ones of the DRM clients, and second key information is provided for use by one or more selected ones of the content decryption modules. Content key information is encrypted to form encrypted content key information such that the selected ones of the content decryption modules are enabled by the second key information to recover the content key information from the encrypted content key information. The encrypted content key information is further encrypted to form super-encrypted content key information such that the selected ones of the DRM clients are enabled by the first key information to recover the encrypted content key information from the super-encrypted content key information. Corresponding head-end and client terminal apparatus are also disclosed.
