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US 2002/0118833 A1Published application
Compact and low-cost system for receiving scrambled signals from a plurality of operators
OwnerHerve Benoitinventor
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OwnerHerve Benoitinventor
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The invention relates to a system intended to receive encoded and scrambled data signals DS, which system comprises: a decoder DEC, an output device DISP provided with means to generate output stimuli on the basis of output signals OS from said decoder, descrambling means DES for descrambling the data signals DS, which are activated by an enabling signal ES, enabling means EN, which are intended to receive protected information from an operator and supply the enabling signal ES. The invention enables the user to receive programs originating from different operators, in such a manner that neither the cost of and the space taken up by said system nor the risk that the contents of these programs is fraudulently copied become prohibitively high. Application: Digital television program receivers.
A system intended to receive encoded and scrambled data signals and process these signals in order to convert them to output stimuli that can be readily understood by a user of this system, which comprises:
A system as claimed in claim 8, wherein the detachable memory medium is a chip card.
A method of descrambling and decoding data signals within a system intended to convert said signals into output stimuli that can be readily understood by a user of this system, which process includes a step of transferring a conditional access software program, from enabling means intended to receive protected information from a transmitter of data signals, to descrambling means comprising hardware for executing said software program.
Dependencies are inferred from the claim text.