Patent ID: 11871133
Assignee: VARJO TECHNOLOGIES OY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 11:
12. A display apparatus comprising:
gaze-tracking means;
a light source per eye;
an image sensor per eye comprising a plurality of pixels arranged on a photo-sensitive surface thereof; and
at least one processor configured to:
process gaze-tracking data, collected by the gaze-tracking means, to determine a gaze direction of a user's eye;
identify a gaze position on the photo-sensitive surface of the image sensor, based on the gaze direction of the user's eye;
determine a first region and a second region on the photo-sensitive surface of the image sensor based on the gaze position, wherein the first region includes and surrounds the gaze position, while the second region surrounds the first region;
read out first pixel data from each pixel of the first region;
select a set of pixels that are to be read out from the second region based on a predetermined spatially irregular sub-sampling pattern, wherein the predetermined sub-sampling pattern indicates locations of the pixels of the set;
read out second pixel data from the pixels of the selected set;
generate, from the second pixel data, pixel data of remaining pixels of the second region;
process the first pixel data, the second pixel data and the generated pixel data to generate at least one image frame; and
display the at least one image frame via the light source.