METHOD FOR SIMULCRYPTING SCRAMBLED DATA TO A PLURALITY OF CONDITIONAL ACCESS DEVICES
First Claim
6-1. The apparatus of claim 1, wherein the descrambler unit descrambles the scrambled content by producing a first key to descramble a first control word, and thereafter, using the first control word to descramble the scrambled content and recover the unscrambled content.
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Abstract
One embodiment of the invention relates to an apparatus comprising an input, a descrambler unit and a re-scrambler unit. The input is adapted to receive scrambled content. The descrambler unit is coupled to the input. The descrambler unit descrambles the scrambled content in order to recover unscrambled content and concurrently routes both the unscrambled content over a first communication link for display on a display device and the unscrambled content over a second communication link. The re-scrambler unit is coupled to the second communication link. The re-scrambler unit is adapted to scramble the unscrambled content to produce re-scrambled content for transmission.
110 Citations
20 Claims
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6-1. The apparatus of claim 1, wherein the descrambler unit descrambles the scrambled content by producing a first key to descramble a first control word, and thereafter, using the first control word to descramble the scrambled content and recover the unscrambled content.
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10. A digital device comprising:
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a decoding unit; and a digital receiver coupled to the decoding unit, the digital receiver comprises a tuner adapted to receive an incoming digital bitstream, a demodulator unit coupled to the tuner, the demodulator unit is to demodulate the digital bitstream to recover program data from the incoming digital bitstream, the program data including scrambled content, and a conditional access unit coupled to the demodulator unit, the conditional access unit is to receive the program data from the demodulator unit and descramble the scrambled content to produce unscrambled content, the unscrambled content being routed via a first communication path for display on a display device and also being routed over a second communication path for re-scrambling prior to transmission from the conditional access unit. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A system adapted to receive an incoming digital bit stream from one or more service providers with the digital bitstream including program data, the system comprising:
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a transmission medium; a hard disk recording unit coupled to the transmission medium; and a digital device coupled to the transmission medium, the digital device comprises a decoding unit; and a digital receiver coupled to the decoding unit, the digital receiver comprises a tuner adapted to receive the digital bitstream, a demodulator unit coupled to the tuner, the demodulator unit is to demodulate the digital bitstream to recover the program data, the program data including scrambled content, and a conditional access unit coupled to the demodulator unit, the conditional access unit is to receive and descramble the scrambled content to produce unscrambled content, the descrambled content being routed over both a first communication path and a second communication path, the descrambled content over the first communication path being routed to the decoding unit for decoding of the descrambled content and subsequently displayed while the descrambled content over the second communication path being re-scrambled and transmitted to the hard disk recording unit over the transmission medium. - View Dependent Claims (20)
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Specification