Apparatuses, systems, and methods for renewability with digital content protection systems
AssigneeIntel Corporation
InventorPriyadarsini Devanand
Life of this patent
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Abstract
In one embodiment of the invention, a format for renewability content (e.g., a System Renewability Message (SRM)) corresponding to a content protection protocol (e.g., High-Bandwidth Digital Content Protection (HDCP)) may be interoperable with devices that are compliant with different versions of the standard (e.g., HDCP1.x and 2.x devices) and that include different amounts of storage for the renewability content (e.g., first and second generation devices).
Claims16
An apparatus comprising:
- at least one processor to process privilege renewability content, wherein (a) the apparatus is to transfer protected content to a receiver device and (b) the renewability content is to include first and second type renewability content portions that respectively comprise first and second unique privilege-revoked identifiers for receiver devices;
- and
- a memory, coupled to the at least one processor, to store the first portion but not the second portion based on whether the apparatus is a first type system, wherein first type systems have less memory capacity to store privilege renewability content than second type systems;
- wherein the at least one processor is to:
- (a) separate the first portion from the second portion based on whether the apparatus is a first type system, and (b) store the separated first portion in the memory but not the second portion.
An article comprising a non-transitory medium storing instructions that enable a processor-based system to:
- process and update privilege renewability content, wherein (a) the system is to transfer protected content to a receiver device and (b) the renewability content is to include first and second type renewability content portions that respectively comprise first and second unique privilege-revoked identifiers for receiver devices;
- and
- store the first and second portions based on whether the system is a second type system, wherein first type devices have less memory capacity to store privilege renewability content than second type devices;
- wherein the renewability content includes a format that is scalable to operate with source devices of differing types and interoperable to operate with receiver devices compliant with differing content protection protocol versions.
An article comprising a non-transitory medium storing instructions that enable a processor-based system to:
- process and update privilege renewability content, wherein (a) the system is to transfer protected content to a receiver device and (b) the renewability content is to include first and second type renewability content portions that respectively comprise first and second unique privilege-revoked identifiers for receiver devices;
- store the first and second portions based on whether the system is a second type system, wherein first type systems have less memory capacity to store privilege renewability content than second type systems
- obtain a unique first identifier for a first receiver device compliant with a version of a content protection protocol;
- obtain a unique second identifier for a second receiver device compliant with another version of the content protection protocol;
- and
- send the protected content from the system to both receiver devices based on determining the first and second identifiers are not included in the privilege renewability content.
Dependencies are inferred from the claim text.