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Digital television with subscriber conference overlay

Television – Two-way video and voice communication – Conferencing
Reexamination Certificate

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Digital video converter box for subscriber/home with multiple te

Television – Two-way video and voice communication – User positioning
Patent

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Digital video network with continuous audio presence at network

Television – Two-way video and voice communication – User positioning
Patent

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Digital video signal processing apparatus of mobile...

Television – Two-way video and voice communication – Conferencing
Reexamination Certificate

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Digital video switch for video teleconferencing

Television – Two-way video and voice communication – User positioning
Patent

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Display accessory for a mobile device

Television – Two-way video and voice communication
Reexamination Certificate

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Display and camera device for videophone and videophone...

Television – Two-way video and voice communication
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Display apparatus

Television – Two-way video and voice communication – Display arrangement
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Display apparatus

Television – Two-way video and voice communication – Display arrangement
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Display apparatus and method of using same

Television – Two-way video and voice communication
Reexamination Certificate

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Display device having image pickup function and two-way...

Television – Two-way video and voice communication – User positioning
Reexamination Certificate

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Display management during a multi-party conversation

Television – Two-way video and voice communication – Display arrangement
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Display system and method

Television – Two-way video and voice communication – User positioning
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Distance learning system providing individual television partici

Television – Two-way video and voice communication – User positioning
Patent

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Distributed MCU

Television – Two-way video and voice communication – Conferencing
Reexamination Certificate

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Distributed video communications system

Television – Two-way video and voice communication – Display arrangement
Reexamination Certificate

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Door phone system

Television – Two-way video and voice communication
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Dual conversion settop terminal including a system for avoiding

Television – Two-way video and voice communication – User positioning
Patent

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Dual forward and reverse test points for amplifiers

Television – Two-way video and voice communication – User positioning
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Dynamic idle aggregation in digital signal transmission

Television – Two-way video and voice communication – User positioning
Patent

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