Receiving apparatus

Details Receiving apparatus Receiving apparatus

2008-07-08

2008-07-08

Vu, Kimyen (Department: 2135)

Cryptography

Video cryptography

Video electric signal modification

C380S240000, C713S150000, C713S165000, C713S168000, C713S193000

Reexamination Certificate

active

07397921

ABSTRACT:
A transmission apparatus updates the encryption method in the event the encryption method is broken. The tool ID of a decryption tool for encrypted data is acquired, the presence of the tool is confirmed and the tool is then acquired and updated, and encrypted data is processed and transmitted based on rights information associated with the encrypted data.

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