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Dive into the research topics where David Jay Duffield is active.

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Featured researches published by David Jay Duffield.


Archive | 1989

Tuner control apparatus having tune-by-label capability

David Jay Duffield; Billy Wesley Beyers


Archive | 1990

Data transfer from an external computer to a television receiver having picture-in-picture capability

Eric D. Romesburg; Kenneth W. Maze; David Jay Duffield; Michael Scott Deiss; Billy Wesley Beyers; Kevin Elliott Bridgewater


Archive | 1990

Data transfer from a television receiver having picture-in-picture capability to an external computer

David Jay Duffield; Michael Scott Deiss; Billy Wesley Beyers; Kevin Elliott Bridgewater


Archive | 2001

Ca system for broadcast dtv using multiple keys for different service providers and service areas

Ahmet Mursit Eskicioglu; David Jay Duffield; Billy Wesley Beyers; Michael Scott Deiss; David Emery Virag


Archive | 2000

Method and system for handling two ca systems in a same receiver

Ahmet Mursit Eskicioglu; Michael Scott Deiss; Jean-louis Diascorn; David Jay Duffield


Archive | 2000

A global copy protection system for digital home networks

Ahmet Mursit Eskicioglu; David Emery Virag; David Jay Duffield; Michael Scott Deiss; Billy Wesley Beyers


Archive | 2000

Global copy protection system for digital home networks

Ahmet Mursit Eskicioglu; David Emery Virag; David Jay Duffield; Michael Scott Deiss; Billy Wesley Beyers


Archive | 2000

System and method of verifying authorization for communicating protected content

David Jay Duffield; Michael Scott Deiss


Archive | 2000

Method and system for adding a conditional access system

David Jay Duffield; Jean-louis Diascorn; Ahmet Mursit Eskicioglu


Archive | 2004

Method of accessing transmitted audio/video data protected according to different conditional access systems by a same apparatus

Ahmet Mursit Eskicioglu; Michael Scott Deiss; Jean-louis Diascorn; David Jay Duffield

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