US2017339373A1PendingUtilityA1

Methods for the covert transmission of data

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Assignee: KOEMMERLING OLIVERPriority: Nov 25, 2009Filed: Jul 26, 2017Published: Nov 23, 2017
Est. expiryNov 25, 2029(~3.4 yrs left)· nominal 20-yr term from priority
Inventors:Oliver Koemmerling
H04N 21/26606H04N 21/4181H04N 21/6332H04N 21/63775H04N 7/1675
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Claims

Abstract

A method for determining an identifier of a conditional access card used in a conditional access system, in which the conditional access card autonomously modulates the timing of data packets sent by the conditional access card, to form a timing sequence that corresponds to the identifier of the card. The sequence is generated by a predefined non-linear function stored on the conditional access card, and the predefined non-linear function depends on both the identifier of the conditional access card and a non-linear random sequence that is known to the conditional access card and a monitoring station that receives transmissions from the conditional access card.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method for communicating data related to an electronic device, the method comprising the steps of:
 said electronic device autonomously modulating the timing of a plurality of data packets sent by said electronic device to form a timing sequence that corresponds to a predetermined data sequence.   
     
     
         2 . The method of  claim 1 , further comprising:
 said timing sequence being generated by a predefined function stored on said electronic device.   
     
     
         3 . The method of  claim 1 , further comprising:
 said modulation of said timing not being in response to a request for a delay.   
     
     
         4 . The method of  claim 1 , wherein:
 said timing sequence corresponds to a unique signature of said electronic device.   
     
     
         5 . A method for communicating data related to an electronic device, the method comprising the steps of:
 modulating the timing of a plurality of data packets sent by said electronic device to form a timing sequence which corresponds to a predetermined data sequence.   
     
     
         6 . The method of  claim 5 , further comprising:
 said timing sequence being generated by a predefined function stored on said electronic device.   
     
     
         7 . The method of  claim 5 , further comprising:
 said modulation of said timing not being in response to a request for a delay.   
     
     
         8 . The method of  claim 5 , wherein:
 said timing sequence correlates to a unique signature of said electronic device.   
     
     
         9 . An electronic device, comprising data;
 said electronic device adapted to modulate the timing of a plurality of data packets sent by said electronic device to form a timing sequence which corresponds to a predetermined data sequence.   
     
     
         10 . The electronic device of  claim 9 , further comprising:
 said timing sequence being generated by a predefined function stored on said electronic device.   
     
     
         11 . The method of  claim 9 , further comprising:
 said modulation of said timing not being in response to a request for a delay.   
     
     
         12 . The method of  claim 9 , further comprising:
 said timing sequence correlates to a unique signature of said electronic device.   
     
     
         13 . A method for communicating data related to an electronic device, the method comprising the steps of:
 performing a predefined function, which depends on said data, to generate a sequence of timing modulations of communications corresponding to said data; and   incorporating said sequence of timing modulations into communications of said data.   
     
     
         14 . The method of  claim 13 , wherein:
 said timing modulations of said communications comprises delaying transmission of individual communications.   
     
     
         15 . The method of  claim 13 , further comprising:
 said sequence of timing modulations not being in response to a request for a delay.   
     
     
         16 . The method of  claim 13 , wherein:
 said sequence of timing modulations corresponds to a unique signature of said electronic device.   
     
     
         17 . An electronic device, comprising data;
 said electronic device adapted to perform a predefined function, which depends on said data, to generate a sequence of timing modulations of communications corresponding to said data; and   said electronic device adapted to incorporate said sequence of timing modulations into communications of said data.   
     
     
         18 . The method of  claim 17 , wherein:
 said sequence of timing modulations corresponds to a unique signature of said electronic device.

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