Abstract: A display apparatus communicably coupled with server arrangement. Display apparatus includes means for tracking user's gaze; means for tracking pose of display apparatus; light source; optical element; and processor. Processor is configured to: process gaze-tracking data; process pose-tracking data; send, to server arrangement, gaze information and apparatus information, server arrangement predicts gaze information and apparatus information, and processes input image to generate image based on predictions; receive, image, predicted gaze information, and predicted apparatus information; determine adjustment required in configuration of light source and optical element prior to displaying image; determine if portion of previous image is to be displayed during adjustment; if yes, display said portion during adjustment; if no, switch off or dim light source during adjustment; display image via light source after adjustment.

Abstract: A display apparatus communicably coupled with server arrangement. Display apparatus includes means for tracking user's gaze; means for tracking pose of display apparatus; light source; optical element; and processor. Processor is configured to: process gaze-tracking data; process pose-tracking data; send, to server arrangement, gaze information and apparatus information, server arrangement predicts gaze information and apparatus information, and processes input image to generate image based on predictions; receive, image, predicted gaze information, and predicted apparatus information; determine adjustment required in configuration of light source and optical element prior to displaying image; determine if portion of previous image is to be displayed during adjustment; if yes, display said portion during adjustment; if no, switch off or dim light source during adjustment; display image via light source after adjustment.

Abstract: A display apparatus including configuration of gaze sensors; gaze predictor module configured to process sensor data collected by aforesaid configuration to determine current gaze location and gaze velocity and/or acceleration, and to predict gaze location and gaze velocity and/or acceleration of user; image processing module configured to process input image for generating first image having first resolution and second image having second resolution, second resolution being higher than first resolution; first and second image renderers that render first and second image, respectively; optical combiner for optically combining projections of first and second images; and image steering unit configured to determine region of optical combiner onto which projection of second image is to be focused, and to make adjustment to focus projection of second image on said region; wherein second image renderer is switched off or dimmed during adjusting phase of image steering unit when said unit is making adjustment.