Digital home network and method for creating and updating...

Details Digital home network and method for creating and updating... Digital home network and method for creating and updating...

2007-12-04

2007-12-04

Barron, Gilberto (Department: 2132)

Cryptography

Video cryptography

Video electric signal masking

C380S229000, C380S201000

Reexamination Certificate

active

09958733

ABSTRACT:
The local digital network comprises: access devices, for receiving data originating from outside the network and transmitting them at a point of the network; and presentation devices for receiving the data flowing in the network and presenting them at a point of the network. The data flow in the network in encrypted form and all the devices of the network use a single key, the local key of the network, for the encryption and decryption of the data. Preferably, the local key of the network is formed by a pair of public and private keys. The purpose of this network is to make it possible to copy data in the local network whilst preventing pirate copies destined for other local networks.

REFERENCES:
patent: 5870474 (1999-02-01), Wasilewski et al.
patent: 6240514 (2001-05-01), Inoue et al.
patent: 6263437 (2001-07-01), Liao et al.
patent: 0382296 (1990-08-01), None
patent: 0679029 (1995-10-01), None

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