Patent ID: 8151356
Filing Date: 2012-04-03
Classification: G06F,G06Q,H04L,H04N

Abstract:
1. A method of transmitting first content, which is obtained by processing content using first digital rights management (DRM) system, from a first device that uses the first DRM system to a second device that uses second DRM system, the method comprising: (a) generating, by a DRM conversion server, a ticket using a first license server and a second license server, the first license server issuing a first license for use in the first DRM system and the second license server issuing a second license for use in the second DRM system; (b) the second device obtaining a second content key required to process the content using the ticket and the second DRM system; and (c) the second device receiving the content from the first device and processing the content using the second content key and the second DRM system, wherein the ticket comprises use control information which specifies a restriction of use of the content, and the second content key required to process the content using the second DRM system wherein the second device receives the content from the first device separately from receiving the ticket from the DRM conversion server, and