CPC H04N 7/173 (2013.01) [H04N 21/2541 (2013.01); H04N 21/4532 (2013.01); H04N 21/45455 (2013.01); H04N 21/4751 (2013.01); H04N 21/4755 (2013.01); H04N 21/84 (2013.01); G06F 2221/2149 (2013.01)] | 20 Claims |
receiving, at a CA information server, a request for CA information on a content, the request including an identification (ID) of the content, from an Internet Protocol television (IPTV);
searching for CA information on the content corresponding to the ID of the content by using the ID of the content based on the request, at the CA information server; and
transmitting the CA information on the content, which is found as a result of the searching, from the CA information server to the IPTV,
wherein the CA information server is independent from a server providing the content to the IPTV.
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