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Online graphical message service

  • US 7,904,514 B2
  • Filed: 09/17/2008
  • Issued: 03/08/2011
  • Est. Priority Date: 06/30/1999
  • Status: Expired due to Fees
First Claim
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1. A method for providing an electronic information service in a computer system connected to a network, the method comprising:

  • creating, in a whiteboard storage server, a first information object comprising at least part of a virtual whiteboard into which a plurality of users can write information and from which the plurality of users can read information via respective computer terminals;

    transmitting the first information object from the whiteboard storage server via the network to a first computer terminal of a first user included in the plurality of the users, such that the first computer terminal causes the virtual whiteboard to be printed together with a position-coding pattern on a substrate, said printed position-coding pattern having sufficient resolution to define strokes of an optically-imaging pen when the pen is moved over the position-coding pattern;

    receiving, in the whiteboard storage server, a second information object from the first computer terminal of the first user, the second information object including a modification of at least part of the virtual whiteboard, said second information object comprising position information generated by the pen; and

    updating the virtual whiteboard stored in whiteboard storage server utilizing the second information object,wherein the position information generated by the pen is used to provide a graphical image which is created by moving the pen over the position-coding pattern.

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