| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that when a plurality of communication terminals share screens, and when resolution of the communication terminals is different from each other, it is impossible to display the screens to be adapted for the communication terminals.SOLUTION: An electronic information board includes: a function which, in an entire screen range within a communication terminal group sharing a share ID, separates the entire screen range to a share range shared with a communication terminal group of a different share ID, and an unshared local range on the basis of vertical and horizontal resolutions among communication terminal groups sharing the share ID; and a function that uses the function to assign drawing data to each communication terminal group according to the communication terminal group and coordinate data of each communication terminal consisting the communication terminal group. Share image data and local drawing data are synthesized for each communication terminal group sharing the share ID, and while a drawing screen is shared, an image in the local range is displayed as one image data together with an image in the share range. |
