Invention Grant
- Patent Title: Descrambler
- Patent Title (中): 解扰器
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Application No.: US12402060Application Date: 2009-03-11
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Publication No.: US07920703B2Publication Date: 2011-04-05
- Inventor: Brant L. Candelore
- Applicant: Brant L. Candelore
- Applicant Address: JP Tokyo US NJ Park Ridge
- Assignee: Sony Corporation,Sony Electronics Inc.
- Current Assignee: Sony Corporation,Sony Electronics Inc.
- Current Assignee Address: JP Tokyo US NJ Park Ridge
- Agency: Blakely, Sokoloff, Taylor & Zafman LLP
- Main IPC: H04L9/14
- IPC: H04L9/14

Abstract:
According to one embodiment of the invention, the descrambler IC comprises a local memory to store a unique key and a plurality of process blocks. A first process block performs cryptographic operations on a first mating key generator using the unique key in order to produce a first key. A second process block uses the first key to perform cryptographic operations on a second mating key generator in order to produce a second key. Using the first key and the second key, a third process block decrypts a first encrypted descrambling key in order to recover a first descrambling key and a fourth process block decrypts a second encrypted descrambling key to recover a second descrambling key. The descrambler IC includes a descrambler to descramble the scrambled digital content using both the first descrambling key and the second descrambling key in order to produce digital content in a clear format.
Public/Granted literature
- US20090168996A1 DESCRAMBLER Public/Granted day:2009-07-02
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