Patent ID: 9509668
Filing Date: 2016-11-29
CPC Classification: G06F,H04L,H04N

Claim Text:
1. A source device in a content distribution system including the source device for transferring content and a sink device for reproducing the content which are connected via a communication network, the source device comprising: a list transmission unit configured to transmit, to the sink device, metadata representing a list of content items held by the source device; and a content transfer unit configured to transfer a content item requested by the sink device to the sink device, wherein the list transmission unit is configured to transmit the metadata which includes a format identifier and a uniform resource locator (URL) for a content item protected by a predetermined copyright protection technology, among the content items included in the list, the format identifier indicating that the content item is distributable under the copyright protection technology, the URL indicating a place where the content item is stored, the content transfer unit is configured to create an encryption key by performing authentication processing on the sink device in accordance with information necessary for performing the authentication processing, which is received from the sink device, encrypt the content item requested by the sink device using the encryption key, and transfer the encrypted content item to the sink device.