Data display systems

Details Data display systems Data display systems

1975-06-30

1976-06-29

Trafton, David L.

Communications: electrical

Systems

Portable self-contained

340336, G06F 314

Patent

active

039672689

ABSTRACT:
In a data display system, data codes are converted by character generators to dot matrix video waveforms for the display of alphanumeric characters and graphical characters (such as segments of graphs or maps), control codes being used to switch between alphanumeric and graphical display modes. In the latter mode, however, certain alphanumeric characters, such as the upper-case alphabet, can still be displayed under the control of a particular bit of the data codes. For one bit value the codes are interpreted as graphical characters. For the other bit value the codes are interpreted as alphanumeric characters.

REFERENCES:
patent: 3750135 (1973-07-01), Carey et al.
patent: 3778811 (1973-12-01), Gicca et al.
patent: 3781850 (1973-12-01), Gicca et al.
patent: 3849773 (1974-11-01), Katahira et al.

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