Raster display position detection

Details Raster display position detection Raster display position detection

1976-12-30

1978-06-06

Curtis, Marshall M.

Communications: electrical

Systems

Portable self-contained

178 18, G06F 314

Patent

active

040939472

ABSTRACT:
In order to accurately detect and commmunicate the position of a data location in a raster type luminescent display utilizing light-sensitive detection means, the permitted response time for the light detection means is extended by allowing detection of only a portion of the data locations during each scan of raster display means. Maintenance of a predetermined relationship between the number of raster scans in a detection cycle and the particular data locations for which detection is possible on each scan permits exact definition of a target data location. Detection is aided by the superimpositon of a luminescent cursor associated with each data location for which detection is permitted as the raster display is scanned.

REFERENCES:
patent: 3342935 (1967-09-01), Leifer et al.
patent: 3399401 (1968-08-01), Ellis et al.
patent: 3912860 (1975-10-01), Sasabe et al.

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