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US 6,188,493 B1Granted
Electronic blackboard device
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsTakahiro Esaki, Kazuhiro Eguchi, Takeshi Nakayama
Life of this patent
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Abstract
An electronic blackboard device capable of performing color printing. Data read by an image sensor is converted to digital data by an A/D converter and provided via a shading correcting circuit and a converter to a printer control circuit, which causes a color printer to print the appropriate data in a color corresponding to a marker.
Claims9
An electronic blackboard device comprising:
- a writing surface on which information is to be written erasably with writing materials;
- a reader for reading the information written on the writing surface for each of color components of the information to provide read color data;
- discriminating means for discriminating said read color data to provide a discrimination output indicating to which one of a plurality of color categories said read color data belongs;
- converting means for converting said read color data into converted color data of one color of a plurality of color agents in accordance with said discrimination output;
- and
- printing means for outputting the information read by said reader in accordance with said converted color data onto a recording paper.
3 more elements
An electronic blackboard device comprising:
- a writing surface on which information is to be written erasably with writing materials;
- a reader for reading the information written on the writing surface for each of color components of the information to provide read color data;
- discriminating means for discriminating said read color data to provide a discrimination output indicating to which one of a plurality of color categories said read color data belongs;
- converting means for converting said read color data into converted color data of one color of a plurality of color agents in accordance with said discrimination output wherein each pixel of said color data has associated therewith one color of said plurality of color agents;
- and
- printing means for outputting the information read by said reader in accordance with said converted color data onto a recording paper.
3 more elements
An electronic blackboard device comprising:
- a writing surface on which information is to be written erasably with writing materials;
- a reader for reading the information written on the writing surface for each of color components of the information to provide read color data;
- discriminating means for discriminating said read color data to provide a discrimination output indicating to which one of a plurality of color categories said read color data belongs;
- converting means for converting said read color data into converted color data of two colors of a plurality of color agents in accordance with said discrimination output, wherein each pixel of said color data has associated therewith two colors of said plurality of color agents;
- and
- printing means for outputting the information read by said reader in accordance with said converted color data onto a recording paper.
3 more elements
Dependencies are inferred from the claim text.