METHOD AND SYSTEM FOR LIMITING CONTENT DIFFUSION TO LOCAL RECEIVERS

摘要

Content is distributed from a source (22) to a sink (26) only if the sink is within a predetermined distance from a source (22). Furthermore, a control signal is sent over a limited range channel to the sink and the content is then sent only if the control signal is received properly by the sink. The content (210) is also sent to the sink, but the sink cannot decode the content unless it has a proper copy of the decoding key. The control signal can be sent over a wireless channel, an IR channel, or an AC line. The content (210) is sent over the Internet, either using a standard wired channel over a wireless channel.