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Title:
SECURE STORAGE AND REPLAY OF MEDIA PROGRAM USING HARD- PAIRED RECEIVER AND STORAGE DEVICE
Document Type and Number:
Japanese Patent JP2002141899
Kind Code:
A
Abstract:

To provide a method and a system for securely recording a broadcast media program for playback of afterward restricted usage.

The method and a device are for storing and obtaining a program material for a later replay and comprises a step where a data stream comprising the program material which is enciphered in accordance with a first (CW) enciphering key is received, the program material is decoded, a decipherment program material is enciphered again in accordance with a second enciphering key 516 and the re-enciphered program material is stored in a media storage device 528. A re-enciphering material 518 is obtained from the media storage device 528 and a re-enciphering program material is decoded so that the program material is played-back. The second enciphering key 516 is obtained from meta data which explains a replay right in one embodiment.


Inventors:
KAHN RAYNOLD M
GAGNON GREGORY J
HA DAVID D
KLAUSS PETER M
CURREN CHRISTOPHER P
JAMES THOMAS H
Application Number:
JP2001222191A
Publication Date:
May 17, 2002
Filing Date:
July 23, 2001
Export Citation:
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Assignee:
HUGHES ELECTRONICS CORP
International Classes:
H04N5/91; G11B20/10; H04L9/08; H04L9/14; H04N5/913; H04N7/167; (IPC1-7): H04L9/14; G11B20/10; H04L9/08; H04N5/91; H04N7/167
Attorney, Agent or Firm:
Takehiko Suzue (4 outside)