Set top box for receiving and decryption and descrambling a plurality of satellite television signals
First Claim
1. A home satellite television receiving system for receiving and decrypting signals transmitted from a plurality of different satellites, the system comprising:
- an antenna system for simultaneously receiving first and second encrypted television signals from first and second satellites respectively, said first and second signals having different types of encryption whereby said first signal has a first encryption and said second signal has a second encryption;
a switch for allowing a user or viewer to select one of said first and second signals for viewing;
a decrypting device simultaneously housing first and second removable smart cards, said first smart card including a memory for storing a first decrypting algorithm for decrypting said received first signal having said first encryption, and said second smart card including a second decrypting algorithm for decrypting said received second signal having said second encryption whereby the signal selected for viewing by the user or viewer, whether said first signal or said second signal, is decrypted using the appropriate smart card and thereafter forwarded for viewing.
2 Assignments
0 Petitions
Accused Products
Abstract
A system and corresponding method are provided for selecting one of a plurality of simultaneously received encrypted direct broadcast satellite (DBS) signals for decryption and viewing. A converter box or decrypting device is provided with a plurality of different decrypting smart cards, all of which are simultaneously inserted in the converter box. The user or viewer scans the received signals and selects one for viewing. The different decrypting algorithms of the different smart cards respectively correspond to the different encryptions of the received DBS signals so that the selected encrypted signal is decrypted by the appropriate and corresponding decrypting smart card and subsequently decompressed and viewed.
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Citations
14 Claims
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1. A home satellite television receiving system for receiving and decrypting signals transmitted from a plurality of different satellites, the system comprising:
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an antenna system for simultaneously receiving first and second encrypted television signals from first and second satellites respectively, said first and second signals having different types of encryption whereby said first signal has a first encryption and said second signal has a second encryption; a switch for allowing a user or viewer to select one of said first and second signals for viewing; a decrypting device simultaneously housing first and second removable smart cards, said first smart card including a memory for storing a first decrypting algorithm for decrypting said received first signal having said first encryption, and said second smart card including a second decrypting algorithm for decrypting said received second signal having said second encryption whereby the signal selected for viewing by the user or viewer, whether said first signal or said second signal, is decrypted using the appropriate smart card and thereafter forwarded for viewing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of receiving a plurality of satellite signals and selecting one of the plurality, the method comprising the steps of:
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simultaneously receiving first and second differently encrypted signals from first and second satellites respectively; selecting one of the first and second signals; selecting one of first and second removable simultaneously accessible decryption cards for decrypting the selected satellite signal, the first and second decryption cards having first and second different decrypting algorithms corresponding to the first and second received signals respectively; decrypting and descrambling the selected signal using the selected decryption card; and using the decrypted and descrambled signal. - View Dependent Claims (11, 12, 13, 14)
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Specification