Cryptography – Video cryptography – Copy protection or prevention
Patent
1996-10-09
2000-09-12
Gregory, Bernarr E.
Cryptography
Video cryptography
Copy protection or prevention
380200, 713182, 713189, 713193, 713200, 713201, 345202, 36471502, 382166, 382232, H04L 900, H04L 906
Patent
active
061188700
ABSTRACT:
A subscriber station for decrypting and decompressing data is provided on a single chip. The chip includes a DES decryption unit for performing decryption of incoming data with a DES key, a public key decryption unit for decrypting the DES key, a general purpose microprocessor for performing decompression, and a Secure Buffer for protecting the decrypted data prior to decompression. The chip includes an embedded key for the public key decryption unit and a bus for providing a data communication path between the microprocessor and the decryption units.
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patent: 4991169 (1991-02-01), Davis et al.
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patent: 5396228 (1995-03-01), Garahi
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Boyle Douglas B.
Rostoker Michael D.
Gregory Bernarr E.
LSI Logic Corp.
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