Title:
DISPLAYING METHOD FOR PROJECTION-TYPE DISPLAY DEVICE
Document Type and Number:
Japanese Patent JPH05281510
Kind Code:
A
Abstract:
PURPOSE:To lighten the burden of an explainer in a conference system by projecting images at the same time on the first screen and on and after the second screens in the vicinity of a projection-type display device. CONSTITUTION:The luminous flux on and after the image where three primary colors are superposed are separated into a plurality of spectral components, and one side is projected on the first screen in front, and the other is projected on and after the second screens 15 in the vicinity of a projection-type display device. Moreover, a touch pane (touch panels) is (are) arranged on the second screen or on and after the third screens, and output is added to an image signal 18, and it is projected at the same time on the first screen and on and after the second screens. Accordingly, the same image as projected on the first screen 13 can be projected on and after the second screens in the vicinity of a projection-type display device, so one can explain it, seeing the second screen 15 at hand being the same image without seeing the first screen 13. Moreover, it is also easy to point to the image projected on the screen merely by inputting it into the touch panel.
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Inventors:
Furuichi
Masayuki Abe
Masayuki Abe
Application Number:
JP8364092A
Publication Date:
October 29, 1993
Filing Date:
April 06, 1992
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G02F1/13; G03B21/56; G03B33/12; H04N5/74; H04N9/31; (IPC1-7): G02F1/13; G03B21/56; G03B33/12; H04N5/74; H04N9/31
Attorney, Agent or Firm:
Ogawa Katsuo