Fast correlation of markers with graphic entities

Details Fast correlation of markers with graphic entities Fast correlation of markers with graphic entities

1986-11-03

1988-03-15

Birmiel, Howard A.

Communications: electrical

Land vehicle alarms or indicators

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

340709, 364521, G06F 1560, G09G 116

Patent

active

047316098

ABSTRACT:
Graphics display system having a moving cursor, such as a cursor, for selecting a displayed entity. The correlation of a cursor with an entity intended to be selected is performed by storing a unique tag assigned to each entity in a cell in a correlation array related to a pel or group of pels corresponding to locations in a bit map of the pels comprising the entity. The x,y coordinates of the cursor are converted into a cell number corresponding to the bit map locations matching such x,y coordinates. The entity tag is then retrieved from the addressed cell.

REFERENCES:
patent: 3997891 (1976-12-01), Iwamura et al.
patent: 4555775 (1985-11-01), Pike
patent: 4559533 (1985-12-01), Bass et al.
patent: 4593372 (1986-06-01), Bondai et al.
patent: 4609917 (1986-09-01), Shen
patent: 4665555 (1987-05-01), Alker
patent: 4683468 (1987-07-01), Himelstein
patent: 4686522 (1987-08-01), Hernandez et al.
patent: 4688181 (1987-08-01), Cottrell et al.

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