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    • 28. 发明授权
    • Electronic blackboard
    • 电子黑板
    • US5181129A
    • 1993-01-19
    • US490467
    • 1990-03-08
    • Kunio SatoSusumu AkimaruNobuyoshi HoshiYasuro Hori
    • Kunio SatoSusumu AkimaruNobuyoshi HoshiYasuro Hori
    • H04N1/04H04N1/12H04N1/193
    • H04N1/0417H04N1/0402H04N1/1215H04N1/1255H04N1/193H04N2201/0438
    • An electronic blackboard having a copy function, and an edit function or communication function. A single reading unit is used in common for both reading an image on a flat board and reading an image or an original document. Reflected light from the flat board and from the original document is converged and projected onto a light receiving surface of a single photoelectric conversion element. An image of the flat board of the original document can be selectively read, or the composite image of both the flat board and original document can be read. Further, the electrical signal corresponding to the image can be modulated and transmitted, and a received electrical signal can be demodulated to reproduce a corresponding image. Furthermore, in accordance with the electrical signal obtained by photoelectrically converting an image, the layout of the image on the flat board can be determined and edited to change the shape of the image.
    • 具有复印功能的电子黑板,以及编辑功能或通信功能。 一个单一读取单元用于读取平板上的图像并读取图像或原始文档。 来自平板和原稿的反射光被会聚并投影到单个光电转换元件的光接收表面上。 可以选择性地读取原始文档的平板的图像,或者可以读取平板和原稿的合成图像。 此外,可以调制和发送对应于图像的电信号,并且可以解调接收的电信号以再现相应的图像。 此外,根据通过光电转换图像获得的电信号,可以确定和编辑平板上的图像的布局以改变图像的形状。