Signal security in a satellite signal distribution environment
First Claim
1. A method implemented by a channel stacking switch (CSS), comprising:
- receiving, by the CSS, a message from a set top box (STB) over a communications link;
processing the message to determine whether or not the message is legitimate and obtain data destined for the CSS from the legitimate message;
taking an action in response to processing the message, the action comprising in response to the determination that the message is legitimate, mapping, by the CSS, a satellite transponder channel requested through the data destined for the CSS to a central frequency of the STB.
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Accused Products
Abstract
Certain embodiments provide a set top box, comprising: a processing entity configured to obtain data for a channel stacking switch, to obtain a security data element and to formulate a message for the channel stacking switch by combining the security data element with the data; a communications interface configured to send the message to channel stacking switch. Other embodiments provide a channel stacking switch, comprising: a communication interface configured to receive a message from a set top box; a processing entity configured to determine whether or not the message is legitimate and to take an action that depends on whether or not the message is legitimate. Still further embodiments provide a satellite signal receiving system comprising a channel stacking switch and at least one set top box in secure communication with the channel stacking switch.
30 Citations
29 Claims
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1. A method implemented by a channel stacking switch (CSS), comprising:
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receiving, by the CSS, a message from a set top box (STB) over a communications link; processing the message to determine whether or not the message is legitimate and obtain data destined for the CSS from the legitimate message; taking an action in response to processing the message, the action comprising in response to the determination that the message is legitimate, mapping, by the CSS, a satellite transponder channel requested through the data destined for the CSS to a central frequency of the STB. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A channel stacking switch, comprising:
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a communication interface configured to receive a message from a set top box (STB); a processing entity; and at least one non-transitory computer memory comprising instructions executable by the processing entity to; determine whether or not the message is legitimate, and take an action in response to processing the message, the action comprising in response to the determination that the message is legitimate, mapping a satellite transponder channel requested through the data destined for the channel stacking switch to a central frequency of the STB.
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28. A non-transitory computer-readable storage medium storing instructions for execution by a channel stacking switch (CSS), wherein execution of the instructions by the CSS causes the CSS to:
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be attentive to receipt of a message from a set top box (STB) over a communications link, process the message to determine whether or not the message is legitimate and obtain data destined for the CSS from the legitimate message; take an action in response to processing the message, the action comprising in response to the determination that the message is legitimate, mapping, by the CSS, a satellite transponder channel requested through the data destined for the CSS to a central frequency of the STB.
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29. A satellite signal receiving system comprising a channel stacking switch (CSS) and at least one set top box in secure communication with the channel stacking switch,
wherein the CSS comprises: -
a communication interface configured to receive a message from a set top box (STB); a processing entity configured to; determine whether or not the message is legitimate, and take an action in response to processing the message, the action comprising in response to the determination that the message is legitimate, mapping a satellite transponder channel requested through the data destined for the channel stacking switch to a central frequency of the STB.
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Specification