Display system for displaying information in the form of a horiz

Details Display system for displaying information in the form of a horiz Display system for displaying information in the form of a horiz

1979-06-26

1981-06-09

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

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

340747, 340792, G08B 536

Patent

active

042727677

ABSTRACT:
A horizontally oriented curve is produced on a raster-type cathode-ray tube display by storing curve data words in a memory. The curve data word is representative of the height at which a dot is to be placed on the cathode-ray tube screen. The horizontal position of the dot is dictated by the position of the data word in the memory. The data words are read out of the memory in response to a horizontal address and the data words are compared to a vertical address. Where the data word is equal to the vertical address a dot is illuminated at a particular horizontal and vertical position. The curve is updated by writing a new data word into the memory and moving all of the existing data words one position in the memory. The data in the reconfigured memory is then displayed. Provision is also provided for filling in vertical gaps in the horizontal curve to provide a smooth curve.

REFERENCES:
patent: 3678498 (1972-07-01), Nagamatsu et al.
patent: 3686662 (1972-08-01), Blixt et al.
patent: 3725901 (1973-04-01), Lehari et al.
patent: 3778811 (1973-12-01), Gicca et al.
patent: 3781850 (1973-12-01), Gicca et al.
patent: 3786476 (1974-01-01), Graves et al.
patent: 3792464 (1974-02-01), Hamada et al.
patent: 3969716 (1976-07-01), Roberts
patent: 4068310 (1978-01-01), Friauf
patent: 4117473 (1978-09-01), Habeger et al.
patent: 4193122 (1980-03-01), Bowers
patent: 4208723 (1980-06-01), Lecklider
Serck Controls Chromimic 168 Visual Display Terminal Product Data Sheet PDS 10/4, issue 2; Feb. 12, 1976.
Serck Controls Chromimic 168 Visual Display Terminal Graph Package Option Product Data Sheet PDS 10/4-GP issue 1; Jan. 5, 1977.

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