Systems and methods for retrofitting electronic appliances...

Details Systems and methods for retrofitting electronic appliances... Systems and methods for retrofitting electronic appliances...

2007-03-13

2007-03-13

Arani, Taghi T. (Department: 2131)

Cryptography

Video cryptography

Video electric signal modification

C380S200000, C380S252000, C725S025000, C725S037000

Reexamination Certificate

active

11398325

ABSTRACT:
Systems and methods are disclosed for using an arbitrary fixed channel to carry third-party information. In one embodiment, the present invention provides systems and methods for enabling existing content rendering devices to accept content encoded in a proprietary format, such as an encoding format used by a digital rights management system. The encoded content is rendered by the device in the normal manner, and decoded by a retrofitting appliance connected to the device's output. The retrofitting appliance may apply decoded rules and controls to the decoded content, thereby managing use of the content.

REFERENCES:
patent: 5825879 (1998-10-01), Davis
patent: 6035037 (2000-03-01), Chaney
patent: 6081290 (2000-06-01), Schmidt et al.
patent: 6751321 (2004-06-01), Kato et al.
patent: 6771657 (2004-08-01), Elstermann
patent: 7050586 (2006-05-01), Shamoon

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