Content distribution system and content distribution method

Details Content distribution system and content distribution method Content distribution system and content distribution method

2006-07-19

2010-11-23

Smithers, Matthew B (Department: 2437)

Cryptography

Video cryptography

Copy protection or prevention

C726S007000

Reexamination Certificate

active

07840006

ABSTRACT:
Disclosed herein is a content distribution system including: a content distribution server; a sender terminal; and a receiver terminal; wherein the content distribution server including a communication block; a recording block; a content management block; a content encryption block; and a key management block; wherein the sender terminal including a communication block; a terminal detection block; a recording block; and an extraction block; wherein the receiver terminal including a terminal detection block; a recording block; a decryption block; and a content reproduction block; wherein, if the sender terminal is located inside a communicable range in which data can be transmitted and received with the receiver terminal, the sender terminal distributes the content and the receiver terminal, if located inside the communicable range, reproduces the decrypted content.

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