Patent ID: 7724155
Filing Date: 2010-05-25
Classification: G01C

Abstract:
1. An avionics display, comprising: a synthetic rendering of terrain created using stored terrain data; a horizon line overlaid upon the synthetic rendering of terrain, the horizon line representing zero degrees pitch attitude, as ascertained by an aircraft attitude sensor, in a direction of travel of an aircraft in which the avionics display is installed, the horizon line having a first side and a second side, and wherein the horizon line is configured to move in response to attitude-changing movement of the aircraft; an attitude cue overlaid upon the synthetic rendering of terrain and depicted on the first and second sides of the horizon line such that the synthetic rendering of terrain remains substantially visible, the attitude cue having a first appearance on the first side of the horizon line and a second appearance on the second side of the horizon line, and wherein the first appearance is visually contrasted from the second appearance, wherein the attitude cue is a border surrounding the rendering of synthetic terrain, the border being divided by the horizon line into first and second portions, wherein the first portion is characterized by the first appearance and the second portion is characterized by the second appearance, and wherein the attitude cue moves according to the movement of the horizon line.