Digital video recorder for encrypting/decrypting video programs in segments to facilitate trick play features
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Feb 1, 2005
Grant Date -
N/A
app pub date -
Sep 30, 2000
filing date -
Sep 30, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
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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