DIGITAL RIGHTS MANAGEMENT FOR CONTENT RENDERING ON PLAYBACK DEVICES
摘要
In one embodiment, an elapsed playback time associated with a digital playback device is determined and compared to an allotted playback time for the device. In the event the elapsed and allotted playback times satisfy a predetermined relationship with respect to one another, further content playback on the device may be denied or otherwise regulated until content playback rights intrinsic to the device are renewed or "recharged".
申请公布号
WO2005052901(A2)
申请公布日期
2005.06.09
申请号
WO2004US39371
申请日期
2004.11.22
申请人
REALNETWORKS, INC.;HUG, JOSHUA, D.;HEFTA-GAUB, BRADLEY, D.