ELECTRONIC BLACKBOARD

专利名称：ELECTRONIC BLACKBOARD发明人：IKUTA AKIRA申请号：JP23728785申请日：19851025公开号：JPS6298850A公开日：19870508

摘要：PURPOSE:To improve the efficiency of a normal meeting or a review talk byproviding a means displaying picture information, simultaneously scanning pictureinformation displayed on a board and that newly drawn on the board by means of ascanner and copying or transferring picture information as the same screen.

CONSTITUTION:Coordinates and a picture 10 on the board 1 are obtained by projectingthe previously prepared picture of the screen on the board 1. A picture 11 is a oneadditionally drawn on the board 1 from the outside with the picture 10 as an originalwhen a meeting is held. Accordingly, in this state, the pictures 10 and 11 can berecognized as the picture on the board 1 and as the same screen. For copying, first thescanner 2 scans the board 1. It optically senses the picture on the board 1, and convertsthe coordinates and the pictures 10 and 11 on the board 1 into an electrical signal. Atransfer processor 17 sends the transmitted picture information to a transfer head 19,whereby the pictures on the board 1 are all transferred on a transfer paper 20.

申请人：HITACHI LTD

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