Apparatus for generating graphical configurations

Details Apparatus for generating graphical configurations Apparatus for generating graphical configurations

1972-09-29

1976-09-07

Trafton, David L.

Communications: electrical

Systems

Portable self-contained

315378, G06K 1520

Patent

active

039797422

ABSTRACT:
Apparatus for forming graphical configurations, such as alphanumeric characters, on a radiant energy surface, such as the face of a cathode ray tube, with an energy beam. The apparatus includes a path segment length command means which serves to provide a series of sets of coded command signals. Each set of coded command signals defines the length of an associated path segment of a path to be traced on the surface. A beam controller serves to deflect the beam to trace a predetermined scan path on the surface starting from a preselected starting location. The path includes a plurality of successive path segments which are of lengths dependent upon associated successive sets of coded command signals. These path segments alternate between being inside and outside of the area of a configuration to be formed on the surface. The beam is controlled such that it is continuously blanked while tracing the segments which are outside of the configuration area.

REFERENCES:
patent: 3579224 (1971-05-01), Griffin et al.
patent: 3579234 (1971-05-01), Tsumura et al.
patent: 3728711 (1973-04-01), Adkins

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