Patent ID: 8499090
Filing Date: 2013-07-30
Classification: H04L

Abstract:
1. A home network system comprising: a controlling device having storage to store a plurality of multimedia items; a plurality of rendering devices coupled to the controlling device, each of the plurality of rendering devices are connected to a monitor and comprising storage, the storage of at least one of the rendering devices comprising a partitioned cache of a pre-determined length to (i) enable a portion of a protected multimedia item received from the controlling device using content protection technology to be pre-cached in a protected manner on the at least one rendering device prior to selection by a user for viewing, and (ii) pre-cache a first key obtained via a first key exchange in response to the portion of the protected multimedia item being pre-cached into the partitioned cache prior to selection by the user for viewing, the first key to decrypt the portion of the protected multimedia item pre-cached in the partitioned cache; wherein in response to the user selection of the protected multimedia item for viewing, the partitioned cache to expand and a remaining portion of the protected multimedia item to be progressively streamed from the controlling device to the cache at a rate faster than real-time while the monitor simultaneously displays the multimedia item from the cache; and wherein the partitioned cache further to store and protect a second key, the second key to decrypt the remaining portion of the protected multimedia item being progressively streamed from the controlling device.