Over head projector apparatus and control method

Details Over head projector apparatus and control method Over head projector apparatus and control method

1996-02-09

1998-08-18

Dowling, William

Optics: image projectors

Miscellaneous

353 25, 345118, G03B 2114

Patent

active

057950482

ABSTRACT:
An over head projector including an image inputting device for inputting an image data of a manuscript; a projecting optical system for projecting the image data onto a screen by a first magnification; and an image data magnifying device for dividing a plurality of character image data from the image data of the manuscript into one or more groups of character image data which each group fits a displaying area having a predetermined size, to magnify the character image data by a second magnification, and for transmitting the magnified character image data by each group of character image data onto the projecting optical system.

REFERENCES:
patent: 4428065 (1984-01-01), Dorall et al.
patent: 5475399 (1995-12-01), Borsuk
patent: 5596346 (1997-01-01), Leone et al.
patent: 5659333 (1997-08-01), Okishima
Optronics Optical Technique Dictionary, p. 27, Optronics Corporation, Jan. 18, 1994.

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