Cursor for use in 3-D imaging systems

Details Cursor for use in 3-D imaging systems Cursor for use in 3-D imaging systems

1987-04-02

1989-02-28

Caldwell, Sr., John W.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

358 88, H04N 1300

Patent

active

048089796

ABSTRACT:
The present invention constitutes a cursor image (36) for use in graphics imaging systems for providing images with three-dimensional qualities. The cursor indicates position within a three-dimensional space. The cursor comprises a reference symbol (38) located at a reference point (58) on a reference plane (60), a pointer symbol (40) located pointing to the position (42), and a tether symbol (44) connecting the reference symbol and the pointer symbol. The cursor image includes depth cue features which assist the observer in gauging the depth of the position being indicated. The cursor is preferably displayed with a stereoscopic imaging system (10) employing a liquid crystal stereo switch unit (16). In such a system the cursor image is displayed on a cathode-ray tube (12) in left and right perspective projections (46) and (48) of differing binocular disparity which are used by the observer to form a single three-dimensioinal image of the cursor.

REFERENCES:
patent: 4214267 (1980-07-01), Roese et al.
patent: 4259725 (1981-03-01), Andrews et al.
patent: 4562463 (1985-12-01), Lipton
patent: 4663616 (1987-05-01), Himelstein
patent: 4719507 (1988-01-01), Bos

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