Patent ID: 7904514

Claim:
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.