System and method for multimedia content simulcast
First Claim
1. A machine-readable storage medium having program code stored thereon which, when executed by a processor, cause said processor to perform the operations of:
- encrypting a first group of unencrypted multimedia channels using conditional access (“
CA”
) encryption to produce a first group of encrypted multimedia channels;
encrypting said first group of unencrypted multimedia channels using a different type of encryption to produce a second group of encrypted multimedia channels; and
simulcasting said first group of encrypted multimedia channels simultaneously with said second group of encrypted multimedia channels to a plurality of multimedia subscribers having either a new multimedia receiver or a legacy multimedia receiver, said second group of encrypted multimedia channels being decryptable by said new multimedia receivers and said first group of encrypted multimedia channels being decryptable by said legacy multimedia receivers.
12 Assignments
0 Petitions
Accused Products
Abstract
A computer-implemented method is described for processing multimedia channels comprising: encrypting a first group of multimedia channels using a first type of encryption to produce a first group of encrypted multimedia channels; encrypting the first group of multimedia channels using a second type of encryption to produce a second group of encrypted multimedia channels; concurrently transmitting the first group of encrypted multimedia channels with the second group of multimedia channels to a plurality of multimedia subscribers having multimedia receivers capable of decrypting the first group of encrypted multimedia channels and/or the second group of multimedia channels.
Also described is a method comprising: receiving a plurality of channels from content providers at a cable headend; simulcasting premium cable channels to a plurality of subscribers in both a first encrypted format and a second encrypted format; and tran smitting non-premium channels to the plurality of subscribers in a non-encrypted format.
127 Citations
20 Claims
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1. A machine-readable storage medium having program code stored thereon which, when executed by a processor, cause said processor to perform the operations of:
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encrypting a first group of unencrypted multimedia channels using conditional access (“
CA”
) encryption to produce a first group of encrypted multimedia channels;encrypting said first group of unencrypted multimedia channels using a different type of encryption to produce a second group of encrypted multimedia channels; and simulcasting said first group of encrypted multimedia channels simultaneously with said second group of encrypted multimedia channels to a plurality of multimedia subscribers having either a new multimedia receiver or a legacy multimedia receiver, said second group of encrypted multimedia channels being decryptable by said new multimedia receivers and said first group of encrypted multimedia channels being decryptable by said legacy multimedia receivers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A headend system for processing multimedia streams comprising:
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a first encryption module to encrypt a plurality of first multimedia streams using conditional access (“
CA”
) encryption; anda second encryption module to encrypt said same plurality of first multimedia streams using a different type of encryption; and a quadrature amplitude modulation module to modulate said plurality of first multimedia streams encrypted in both CA encryption and said different type of encryption for simulcasting to a plurality of multimedia subscribers at the same time, the plurality of multimedia subscribers having either a new multimedia receiver or a legacy multimedia receiver, each new multimedia receiver being capable of decrypting said plurality of first multimedia streams encrypted in said different type of encryption and each legacy multimedia receiver being capable of decrypting said plurality of first multimedia streams encrypted in said CA encryption. - View Dependent Claims (13, 14, 15)
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16. A computer-implemented method for processing multimedia channels comprising:
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encrypting a number of unencrypted multimedia channels at a headend using condition access (“
CA”
) encryption to produce a first group of encrypted multimedia channels;simultaneously encrypting the same unencrypted multimedia channels at the headend using a different type of encryption to produce a second group of encrypted multimedia channels; simulcasting said first group of encrypted multimedia channels with said second group of multimedia channels at the same time from the headend to a plurality of multimedia subscribers each having either a new multimedia receiver or a legacy multimedia receiver, each new multimedia receiver being capable of decrypting said second group of encrypted multimedia channels and each legacy multimedia receiver being capable of decrypting said first group of encrypted multimedia channels.
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17. A system comprising:
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means for encrypting first channels using both conditional access (“
CA”
) encryption and a different form of encryption; andmeans for simulcasting said first channels encrypted in both CA encryption and said different form of encryption to subscribers simultaneously, the subscribers having either a new multimedia receiver or a legacy multimedia receiver, said first channels encrypted using said different form of encryption being decryptable by said new multimedia receivers and said first channels encrypted using said CA encryption being decryptable by said legacy multimedia receivers.
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18. A method for deploying new multimedia receivers comprising:
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encrypting a first set of channels using a first type of encryption; encrypting said first set of channels using a second type of encryption; and simultaneously broadcasting said encrypted sets of channels that have been respectively encrypted in said first type of encryption and said second type of encryption to subscribers having either a new multimedia receiver or a legacy multimedia receiver; said channels encrypted using said second type of encryption being decryptable by said new multimedia receivers and said channels encrypted using said first type of encryption being decryptable by said legacy multimedia receivers. - View Dependent Claims (19, 20)
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Specification