Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
Information communication system, transmitting apparatus, transmitting method, and computer program
Transmission of contents from a transmitting apparatus to a plurality of receiving apparatuses is performed, while putting restrictions on a communication area and the number of receiving apparatuses in conformity with a definition of DTCP.In a case of a need to distribute literary works such as movies and the music within a single home network, while preventing the transmission of the literary works to other home networks, a degree of freedom in communication is raised in a case where a communication delay time is short so that a high possibility exists that the communication delay time falls within a specific range. Conversely, in a case where the communication delay time is long so that a low possibility exists that the communication delay time falls within the specific range, the degree of freedom in communication is lowered. Thus, it is allowable to implement a system that ensures a high barrier to unauthorized content distributions, and also, does not have any remarkable restrictions on a rightful home use.
Sony Corporation
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Takehiko Hisato
Nakano Shima