Three-dimensional image special effect apparatus

Details Three-dimensional image special effect apparatus Three-dimensional image special effect apparatus

1995-05-31

1998-04-14

Brier, Jeffery

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

G09G 508

Patent

active

057398135

ABSTRACT:
A three-dimensional image special effect apparatus in which a track ball controls movement of a special image on a display screen. First and second rotation detection means detect the rotation of the track ball in first and second orthogonal directions. The apparatus further includes a device for comparing the outputs of the first and second rotation detectors and allowing only the one of the two outputs having higher value to be output.

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