The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 20, 1999

Filed:

Nov. 13, 1995
Applicant:
Inventors:

Itaru Hirono, Yokohama, JP;

Michihiro Miyasaka, Kawasaki, JP;

Tsuyoshi Matsumoto, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345-5 ; 345126 ;
Abstract

Each of right- and left-deflection holograms is provided for a picture element in a vertical scanning line on the screen of a display unit. For example, the right- and left-deflection hologram are alternately arranged in a single vertical scanning line. A normal image is displayed through the picture elements corresponding to the right-deflection holograms while an inverted image is obtained by rotating the normal image by 180 degrees and is displayed through the picture elements corresponding to the left-deflection holograms. Thus, the two users sitting face to face with the screen of the display device between them can see the image displayed on the screen as a normal image. In addition to the images, a pair of markers are displayed on the screen. These markers are operated by a marker operating unit which moves one marker. The other marker is moved correspondingly by the same amount of movement in the 180-degree opposite direction.


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