H04N21/00
Selective content distribution, e.g. interactive television or video on demand [VOD]
H04N21/00
Selective content distribution, e.g. interactive television or video on demand [VOD]
H04N21/20
Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
H04N21/20
Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
H04N21/25
Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
H04N21/25
Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
H04N21/254
Management at additional data server, e.g. shopping server, rights management server
H04N21/254
Management at additional data server, e.g. shopping server, rights management server
H04N21/2543
Billing; , e.g. for subscription services
H04N21/2543
Billing; , e.g. for subscription services