Conformal display system and a method thereof

A transfer-alignment system for a Head-Mounted Display (HMD), and a display coupled to the HMD, wherein the display is (a) adjustable by a user along the at least one degree of freedom, and (b) adapted to display images rendered by a display-processor, and wherein the HMD is monitored by a tracking system configured to provide information indicating position and/or orientation of the HMD with respect to a frame of reference, the system comprising:

• at least one first inertial sensor attached to the HMD and configured to acquire HMD's inertial readings information indicative of movements of the HMD over time;
• at least one second inertial sensor attached to the display and configured to acquire display's inertial readings information indicative of movements of the display over time;
• and
• a processor configured to:
• obtain the HMD's inertial readings information, the display's inertial readings information and the information indicating the HMD's position and/or orientation with respect to the frame of reference;
• continuously analyze movement information of the HMD and movement information of the display to determine relative orientation between the HMD and the display, wherein the analysis includes canceling a first bias of the at least one first inertial sensor and canceling a second bias of the at least one second inertial sensor by subtracting an average of the HMD's inertial readings and the display's inertial readings from angular velocities acquired from the at least one first inertial sensor and from the at least one second inertial sensor;
• and
• cause the display-processor to adjust the images to conform with respect to the frame of reference based on the information indicating the position and/or orientation and the relative movements of the HMD, wherein the frame of reference is selected from the group consisting of a platform coordinates, a fixed coordinate system established in space, an earth coordinate system, and any combination thereof.