SYSTEM AND METHOD FOR FORMING A VIRTUAL CHANNEL Russian patent published in 2022 - IPC H04N21/458 H04H60/72 H04N21/266 

FIELD: broadcasting.

SUBSTANCE: invention relates to the field of television broadcasting for creating dedicated "virtual" channels (VC). Proposed is a VC service forming system including the transmitting and receiving (client) sides of a satellite broadcasting system, equipped with VC service forming tools, wherein the EPG server is additionally equipped with VC metadata and VC schedule forming tools in the form of a content event sample layout of linear broadcasting channels selected based on parameters preset for each VC and broadcast within the VC service consecutively in time, setting the identifier of the corresponding VC and the mark of use of the event in the composition thereof for each event from the sample. The conditional access subsystem (CAS) is equipped with tools for generating control words with encryption thereof with session keys, as well as ECM and EMM messages containing said words, for each linear channel and VC of the service system or a group thereof. The same content event broadcast by different channels is encrypted with a common control word encrypted with different session keys for each linear channel and VC or a group thereof.

EFFECT: expanded range of possibilities of satellite broadcasting for broadcasting content without increasing the transponder capacity and memory size of the transmitting and client parts, with an increase in the content protection level.

20 cl, 7 dwg, 2 tbl