Non-linear raster generator
AssigneeWestinghouse Electric Corp.
InventorDaniel J. Provine
Life of this patent
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Abstract
A display system utilizing a non-linear raster generator is disclosed. As is conventional in raster scan displays, the scanning is controlled by two electrical signals arbitrarily designated the X and Y deflection signals. In the preferred embodiment, two memories are used to store signals which provide constants to control the amount of the non-linearity of the raster. These constants are processed to generate X and Y deflection signals which are generally hyperbolic in nature. This type of display is particularly useful for displaying mapping signals produced from airborne doppler radar.
Claims4
A system for displaying data using a non-linear raster comprising
- (1) memory means for storing video data to be displayed;
- (2) first means for reading said stored video data to generate a video data signal;
- (3) timer means for initiating said raster;
- (4) first storage means for storing first non-linear scan parameters;
- (5) second storage means for storing second non-linear scan parameters;
- (6) second means for reading said first and second non-linear scan parameters from said first and said second storage means and for processing said first and second non-linear scan parameters, to generate non-linear x and y deflection signals;
- and
- (7) display means responsive to said x and y deflection signals and said video data signal to display said video data signal using a non-linear raster.
A non-linear raster generator comprising:
- (a) first memory means for storing data specifying a first set of parameters to be used to generate deflection signals to produce scan lines of said raster;
- (b) second memory means for storing data specifying a second set of parameters to be used to generate deflection signals to produce scan lines of said raster;
- (c) means for selectively reading data from said first and second memory means in a predetermined sequence to produce a first signal related to a first scan parameter and second signal related to a second scan parameter, including
- (d) arithmatic circuitry responsive to said first and second signals to produce first and second non-linear deflection signals.
Dependencies are inferred from the claim text.