Patent ID: 8677147
Filing Date: 2014-03-18
Classification: G06F,H04L,H04N

Abstract:
1. Method for providing access to a plurality of broadcast services, the method comprising: providing said access via at least one first channel to a plurality of user units, said at least one first channel being a broadcast channel, at least one user unit from said plurality of user units being configured to tune to one of the plurality of broadcast services at any given time, said plurality of services forming a subset of all services broadcast by a management center, said all services being simultaneously accessible to a plurality of user units, said subset of services defining a package, said at least one user unit registered in a register of the management center such that said user unit is authorized to access said package, each service comprising audio/video data, the audio/video data of a service being encrypted by at least one control word; determining, from the register, the package to which said at least one user unit is entitled access and a unique key pertaining to said at least one user unit; forming a message comprising at least one control word for each service of the package to which the at least one user unit is entitled access, said control word being secured by the unique key pertaining to said at least one user unit; and transmitting to said at least one user unit said message on a second channel, said second channel being accessible by the user unit irrespective of which service from the plurality of services the user unit is tuned to, wherein said message provides indication for identifying the control words corresponding to at least one service, and the indication includes at least one of a service identification data (ID-P) and a bitmap.