Title:
PRESENTATION DEVICE
Document Type and Number:
Japanese Patent JP3953949
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a presentation device capable of automatically discriminating the display surface of a display board without performing operation by an operator.
SOLUTION: The presentation device in a presentation system to perform presentation by projecting an image by a projection device to a white board 2 where writing can be performed is equipped with a photographing part 12 for photographing the white board 2, and a display effective range detection means for detecting a display effective range A3 by scanning the white board 2 with a laser beam and receiving reflected light by the white board 2. The photographing means takes a photograph in a photographic range including the display board, and further the device is equipped with an image processing means which segments a photographic image within the display effective range from the photographic image taken by the photographing means so as to store the segmented photographic image in a storage means.
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Inventors:
Osamu Tanaka
Application Number:
JP2002368507A
Publication Date:
August 08, 2007
Filing Date:
December 19, 2002
Export Citation:
Assignee:
Ricoh Elemex Co., Ltd.
International Classes:
G03B21/56; G09G5/00; G03B21/00; G06T1/00; H04N1/04; H04N5/225; (IPC1-7): G09G5/00; G03B21/00; G03B21/56; G06T1/00; H04N1/04; H04N5/225
Domestic Patent References:
| JP2001312001A | ||||
| JP2001249399A | ||||
| JP2000200149A | ||||
| JP9270978A | ||||
| JP5191756A |
Attorney, Agent or Firm:
Hiroaki Sakai
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