Communications: directive radio wave systems and devices (e.g. – With particular circuit – Display
Patent
1996-06-28
1997-12-16
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
Display
342181, G01S 704
Patent
active
056990677
ABSTRACT:
A high capacity radar plot display with low CPU loading. The display includes a display process (42) which controls a graphics window server (46) to render symbols on a display console by a "walking worm" animation. The current symbol plot as well as several symbol plot histories are sequentially displayed to render the animation. A plurality of color maps defining the colors of the current and plot histories are defined, with a clear color map to clear the display. The clear color map includes black (nonvisible) color for all the current and plot histories. The color map for the oldest plot history has a visible color assigned to the oldest history plot, with all other plot histories and the current plot still in black. Successive color maps for the remaining plot histories and the current plot, from the next oldest to the current plot, have progressively more plot histories in a visible color. To render the walking worm animation, the window graphics engine loads successive ones of the color maps into the off screen memory to use in successive draw operations. By toggling the color map selection from the oldest history plot to the current plot color map, which defines all plot histories and current plot in a visible color, the walking worm animation is achieved.
REFERENCES:
patent: 3882502 (1975-05-01), Peabody et al.
patent: 4833475 (1989-05-01), Pease et al.
patent: 5374932 (1994-12-01), Wyschogrod et al.
patent: 5519618 (1996-05-01), Kastner et al.
Brown William Guy
Doan Christine N.
Denson-Low W. K.
Grunebach G. S.
Hughes Aircraft Company
Sales M. W.
Sotomayor John B.
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