Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Patent
1993-10-21
1996-05-14
Hjerpe, Richard
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
359668, G09G 508
Patent
active
055172113
ABSTRACT:
An optical signal detector for an electro-optical mouse comprising elliptical lenses for X-axis and Y-axis to longitudinally latitudinally magnify X-axis and Y-axis images taken on a grating work pad, permitting longitudinal magnification to be greater than latitudinal magnification. Receivers respectively receive magnified X-axis and Y-axis images so as to provide signals indicative of the direction and amount of movement of the optical signal detector for moving the visible cursor from position to position on a display screen.
REFERENCES:
patent: 5075541 (1991-12-01), Chien
patent: 5086197 (1992-02-01), Liou
patent: 5115334 (1992-05-01), Tomita
Farnandez Stoll Kara
Hjerpe Richard
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