Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection
Reexamination Certificate
2005-02-01
2005-02-01
Peeso, Thomas R. (Department: 2132)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
By stored data protection
C713S187000, C713S152000, C713S152000
Reexamination Certificate
active
06851055
ABSTRACT:
A digital video recorder (DVR) is disclosed for storing a plaintext video program as an encrypted video program. The DVR comprises a random access storage (RAS) device for storing the encrypted video program in encrypted segments. The DVR further comprises a cryptography facility comprising an encoder for encrypting plaintext segments of the plaintext video program into the encrypted segments stored on the RAS device, and a decoder for randomly and independently decrypting the encrypted segments of the encrypted video program into plaintext segments during playback.
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Boyle William B.
Rice Alan P.
Keen Personal Media, Inc.
Keen Personal Technologies, Inc.
Peeso Thomas R.
Shara, Esq. Milad G.
Sheerin, Esq. Howard H.
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