초록 ▼

In accordance with a first aspect, a remote server receives video programming in a first encrypted form and stores the video programming. After the remote server receives a request from a subscriber station for transmission of the video programming, the remote server decrypts the video programming,

In accordance with a first aspect, a remote server receives video programming in a first encrypted form and stores the video programming. After the remote server receives a request from a subscriber station for transmission of the video programming, the remote server decrypts the video programming, re-encrypts the video programming into a second encrypted form, and then transmits the video programming to the subscriber station. In accordance with a second aspect, a remote server receives video programming in a first encrypted form, decrypts the video programming, re-encrypts the video programming into a second encrypted form, and then stores the video programming. After the remote server receives a request from a subscriber station, the remote server simply transmits the video programming. In accordance with a third aspect, a remote server receives video programming in a first encrypted form and stores the video programming. After the remote server receives a request from a subscriber station, the remote server passes through the video content by transmitting the video programming. In accordance with a fourth aspect, a remote server receives pre-encrypted video programming and stores it. After the remote server receives a request from a subscriber station, the remote server completes encryption of the video programming and then transmits the video programming.

대표청구항 ▼

1. A method, comprising: storing at least one partially encrypted video program received from a programming source; processing a partially encrypted video program corresponding to a subscriber requested video program to produce a fully encrypted video program; and causing transmission of the fu

1. A method, comprising: storing at least one partially encrypted video program received from a programming source; processing a partially encrypted video program corresponding to a subscriber requested video program to produce a fully encrypted video program; and causing transmission of the fully encrypted video program to the requesting subscriber. 2. The method of claim 1, further comprising: causing the transmission of a decryption key to said requesting subscriber, said decryption key being necessary to decrypt said fully encrypted video program. 3. The method of claim 1, wherein said fully encrypted video program is encrypted according to a public key associated with said requesting subscriber, said public key having associated with it a private key necessary to decrypt said fully encrypted video program. 4. The method of claim 1, wherein said fully encrypted video program is encrypted according to a private key associated with said requesting subscriber, said private key having associated with it a public key necessary to decrypt said fully encrypted video program. 5. The method of claim 1, wherein said fully encrypted video program is encrypted according to a public key, said public key having associated with it a private key necessary to decrypt said fully encrypted video program, said method further comprising: causing the transmission of said private key to said requesting subscriber. 6. The method of claim 5, wherein said public key is encrypted prior to transmission to said requesting subscriber. 7. The method of claim 2, wherein said fully encrypted video program is transmitted to said requesting subscriber via a first communications channel and said decryption key is transmitted to said requesting subscriber via a second communications channel. 8. The method of claim 1, wherein said fully encrypted video program is encrypted according to a Data Encryption Standard. 9. The method of claim 1, further comprising: multiplexing said fully encrypted video program and other signals to create a multiplexed signal for transmission to said requesting subscriber. 10. A method comprising: storing a video program encrypted in a first form; decrypting said program from said stored first form encrypting said program into a second form; and transmitting said second form to a subscriber. 11. The method of claim 10, wherein a first key is used to decrypt said first form of said program. 12. The method of claim 11, wherein said first key is transmitted on a communication channel different than a channel used to transmit said first form to said storing means. 13. The method of claim 10, wherein a second key is used to encrypt said program into said second form. 14. The method of claim 13, wherein said second key is a public key of a public key encryption system. 15. The method of claim 13, wherein said second key is a private key encryption system that encrypts and decrypts said second form. 16. The method of claim 15, wherein said private key encryption system utilizes a data encryption standard. 17. The method of claim 16, wherein said second key is transmitted from a remote server to said subscriber while encrypted in a third form. 18. The method of claim 17, wherein said subscriber isolates and de-encrypts said program. 19. A computer readable medium including software instructions that, when executed by a processor, perform a method, comprising: means for storing a video program encrypted in a first form; means for decrypting said program from said stored first form; means for encrypting said program into a second form; and means for transmitting said second form to a subscriber.