Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1977-09-14
1980-01-08
Hum, Vance Y.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
35 12N, 340725, G09B 904
Patent
active
041820533
ABSTRACT:
A plurality of signals are generated to represent different simulated picture elements, such as markers, road lines, obstacles, etc., which might be encountered along the pathway of a vehicle such as an automobile or an aircraft. These signals are separated into groups representing height, longitudinal and lateral dimensions in three-dimensional space and corresponding intensity levels for each of various picture elements to be displayed, and the signals in each group are multiplexed together to form a composite signal for each of these signal components. The height, longitudinal and lateral groups of multiplexed signals are transformed to perspective form in accordance with a "perspective" transformation. Curvature may be given to the simulated pathway by transforming the composite perspective lateral signal in response to a curve signal generator. The composite horizontal signal modified in accordance with vehicle heading is fed to the horizontal control circuits of the display device. Finally, a composite multiplexed signal in accordance with the desired "intensity" of the displayed picture elements is modified in accordance with the longitudinal axis composite signal so that intensity is decreased as a function of the simulated distance of objects in the vehicle pathway.
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Allen Richard W.
Hogge Jeffrey R.
Hum Vance Y.
Sokolski Edward A.
Systems Technology, Inc.
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