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Conversational video system

  • US 4,388,489 A
  • Filed: 01/30/1981
  • Issued: 06/14/1983
  • Est. Priority Date: 01/30/1981
  • Status: Expired due to Term
First Claim
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1. In a video communication network capable of providing textual data messages to a plurality of subscriber terminals throughout said network, at least a portion of said plurality of subscriber terminals comprising keystations, each of said keystations comprising a keyboard means for inputting textual data messages and associated data control signals to said network and a video display means for providing a textual video display of at least keyboard generated data input to said network;

  • the improvement comprising at least one message switching node interface means for routing video conversational textual data messages throughout said network and a plurality of keystation terminal controller interface means operatively connected between said keystations and said one message switching node interface means with at least one keystation being operatively connected to one keystation terminal controller interface means for each of said plurality of keystation terminal controller interface means, said one message switching node interface means comprising message routing logic means and storage means operatively connected to said message routing logic means for providing message routing logic control signals, each of said keystation controller interface means comprising display control logic means and local video display storage means for locally storing video conversational textual data for providing a video display thereof to at least one of said keystations connected to said keystation controller interface means, said keyboard means comprising means for providing unique calling signals to said keystation controller interface means for initiating calls to a keystation designated portion of said plurality of keystations in said network, said keystation controller interface means comprising means for providing said calling signals to said message switching node interface means and for receiving said calling signals therefrom for completing a call to said one connected keystation, said message routing logic means comprising means for routing said calling signals to said designated keystations to complete said initiated calls, said display control logic means comprising means for providing on said one connected keystation video display means a substantially simultaneous video display of video conversational textural data received from two different designated keystations in said network with which calls are completed via said separate keyboard means associated with said two different designated keystations and transmitted to said two different designated keystations via said keyboard means associated with said one connected keystation, whereby different video conversations may be substantially simultaneously carried out with different keystations on a common video display using a common keyboard.

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