Please download the dossier by clicking on the dossier button x
×

Electronic conference system

  • US 4,654,483 A
  • Filed: 06/20/1984
  • Issued: 03/31/1987
  • Est. Priority Date: 06/28/1983
  • Status: Expired due to Term
First Claim
Patent Images

1. An electronic conference system for a remote conference among a plurality of stations each displaying the same picture data, each of said stations comprising:

  • a data input unit for inputting the picture data;

    a storage unit for storing picture data for plural pictures;

    a display unit for displaying each of said pictures one at a time; and

    control means connected to said data input unit, said storage unit and said display unit, for controlling the storing of picture data input from said data input unit in a first station or transferred from a second station, for controlling a display on said display unit, for controlling transmitting of picture data stored in said storage unit to said second station, and for controlling receiving of picture data transferred from said second station, each of said control means comprising;

    absolute number providing means for assigning a first absolute number to picture data when said picture data of said picture is input from said data input unit of the first station, said storage unit storing said first absolute number;

    absolute number transmitting means for transmitting said first absolute number to said second station;

    picture data transmitting means for transmitting said picture data provided with said first absolute number to said second station only when said second station stores no number equal to said first absolute number;

    absolute number receiving means for receiving a second absolute number from said second station when picture data is formed in said second station, said storage unit storing said second absolute number;

    discriminating means for discriminating whether said storage unit stores a number equal to said second absolute number from said second station;

    discriminating result transmitting means for transmitting result information concerning the discrimination by said discriminating means to said second station; and

    picture data receiving means for receiving picture data provided, from said second station, with said second absolute number, said second station transmitting said picture data with said second absolute number in response to the result information received from said discriminating result transmitting means, said result information indicating that said storage unit has not stored the number equal to said second absolute number;

    whereby, the same picture data for the same pictures stored in respective storage units in respective stations is supervised by the same absolute number at connected stations.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×