Oblon, McClelland, Maier & Neustadt, L.L.P
Communication system, communication device, communication method, and computer program
To securely transmit content through remote access via an external network, such as a WAN, while exceeding restrictions of an RTT and a TTL.A way of handling a flag for controlling remote access of content is explicitly defined, and an authentication method is explicitly defined when a content using device performs remote access. Thus, also in remote access, similarly to access of the related art in a household, a copyright protection environment of content based on the DTCP-IP is constructed.
SONY CORPORATION
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Atsuko Takehiko Teruhiko Toshiharu
Ogasawara Nakano Kori Fukui