Patent ID: 8018934

Claim:
A method comprising: receiving a plurality of service flows from at least one content source within an Internet Protocol television (IPTV) system at a processing device coupled to at least one subscriber device; processing multicast service flow requests from said at least one subscriber device within said Internet Protocol television (IPTV) system by mapping a service flow from a content source to a multicast service flow based on a multicast service flow request from a particular subscriber device and assigning a unique identifier to said mapped multicast service flow to convert said mapped multicast service flow to a unicast delivery of said mapped multicast service flow to said particular subscriber device; inserting content specific to said particular subscriber device into said mapped multicast service flow at said processing device for unicast delivery to said particular subscriber device; and receiving at a cable modem associated with said particular subscriber device said mapped multicast service flow including said specific content from said processing device and providing said mapped multicast service flow including said specific content to said particular subscriber device in response to said unique identifier corresponding to said particular subscriber device.