Solid state attitude director indicator
First Claim
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1. A solid state indicator for displaying relative movement in at least one axis of motion comprising:
- a. a liquid crystal display having a first plurality of selectively activated segments formed in a first segmented circle; and
b. a second plurality of segments formed in a concentric configuration relative to said first segmented circle to form a second circle circumjacent the first, wherein a contiguous portion of said first plurality of segments, selectively activated, defines an arc on said first segmented circle, the inactive segments in said first plurality corresponding substantially to activated segments of said second plurality, such that a complete circle is cooperatively defined.
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Abstract
A solid state attitude and director indicator (ADI) is disclosed utilizing liquid crystal display technology to represent attitude of a vehicle in two axes. A visual representation of attitude changes is provided on the liquid crystal display as well as numeric data, in a preferred embodiment. Additionally, glideslope, localizer, and approach speed may be displayed as well as heading and command bar information.
60 Citations
19 Claims
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1. A solid state indicator for displaying relative movement in at least one axis of motion comprising:
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a. a liquid crystal display having a first plurality of selectively activated segments formed in a first segmented circle; and b. a second plurality of segments formed in a concentric configuration relative to said first segmented circle to form a second circle circumjacent the first, wherein a contiguous portion of said first plurality of segments, selectively activated, defines an arc on said first segmented circle, the inactive segments in said first plurality corresponding substantially to activated segments of said second plurality, such that a complete circle is cooperatively defined. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. For a vehicle having a specified normal attitude directly related to a specified normal movement axis of said vehicle, an attitude indicator comprising:
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a. a liquid crystal display having two concentric multisegmented circles, a first circumjacent the second, and a horizontal reference segment; b. means for operating said liquid crystal display such that when a defined arc on said second circle of segments is activated, the inactive segments of said second circle correspond substantially to the activated segments of said first circle, such that a complete circle is cooperatively defined; c. a plurality of segmented vertical bars for selective activation as a function of attitude of said vehicle around a lateral axis horizontal to the earth and perpendicular to said normal movement axis; and d. the relationship of said defined arc to said horizontal reference segment is a function of attitude of said vehicle around said normal movement axis. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification