Method and system for limiting content diffusion to local receivers
First Claim
1. A system for transmitting content within a predetermined geographic region comprising:
- a content source generating control signals and selectively transmitting said control signals and content, at least said control signals being transmitted over a limited range channel; and
a sink receiving said content, said sink being able to utilize said content only if it also receives said control signals over said limited range channel.
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Accused Products
Abstract
Content is distributed from a source to a sink only if the sink is within a predetemined distance from a source. In one embodiment, 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. In another embodiment, the content is encrypted and the encryption key is sent over the limited range channel. The content 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 is sent over the Internet, either using a standard wired channel or over a wireless channel.
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Citations
20 Claims
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1. A system for transmitting content within a predetermined geographic region comprising:
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a content source generating control signals and selectively transmitting said control signals and content, at least said control signals being transmitted over a limited range channel; and
a sink receiving said content, said sink being able to utilize said content only if it also receives said control signals over said limited range channel. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for transmitting content comprising:
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a source transmitting a control signal over a limited range channel and selectively transmitting content when an acceptable response is received to said control signal; and
a source receiving said control signal, generating a response corresponding to said control signal, and subsequently receiving said content. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method of distributing content from a source comprising the steps of:
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transmitting a control signal from the source over a limited range channel;
receiving said control signal by a sink;
returning a response signal responsive to said control signal by said sink; and
in response transmitting said content to said sink. - View Dependent Claims (16, 17, 18)
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19. A method of distributing content comprising the steps of:
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transmitting a decoding key over a limited range channel;
receiving said decoding key by a sink;
transmitting said content in response to said acknowledgement; and
decoding said content using said decoding key. - View Dependent Claims (20)
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Specification