US 12,354,532 B2
Method and system for operating an active display
Max Von Braun, Hamburg (DE)
Assigned to H2VR HoldCo, Inc., Covina, CA (US)
Appl. No. 18/558,442
Filed by H2VR HoldCo, Inc., Covina, CA (US)
PCT Filed May 2, 2022, PCT No. PCT/EP2022/061734
§ 371(c)(1), (2) Date Nov. 1, 2023,
PCT Pub. No. WO2022/233799, PCT Pub. Date Nov. 10, 2022.
Claims priority of application No. 21171736 (EP), filed on May 2, 2021; and application No. 21189860 (EP), filed on Aug. 5, 2021.
Prior Publication US 2024/0242662 A1, Jul. 18, 2024
Int. Cl. H04N 21/2343 (2011.01); G09G 3/20 (2006.01); G09G 3/32 (2016.01); G09G 3/3208 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 3/2007 (2013.01); G09G 3/3208 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0247 (2013.01); G09G 2320/0257 (2013.01); G09G 2320/0626 (2013.01); G09G 2340/0435 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for operating an active display comprising an array of active light-emitting elements, said method comprising the-steps of:
providing a first feed of a first sequence of image data (F0k) intended to be seen by direct viewers;
providing at least one second feed of a second sequence of image data (F1k, C1k, F2k, C2k; F3k, C3k) not intended to be seen by said direct viewers, said at least second feed comprising a second sequence of image data (F1k; F2k; F3k) and a second complementary sequence of image data (C1k; C2k; C3k) consisting of inverse/complementary image data to said second sequence of image data such that a combination of each image of said second sequence and said second complementary sequence of image data (F1k and C1k; F2k and C2k; F3k and C3k) results in second homogenous gray images;
selecting a standard frame rate (SFR) at which said first and said at least second sequences of image data are presented on said active display;
operating the active display at a high display frame rate (HDFR) comprising nd HDFR image slots/slices during a standard frame rate time interval ΔT=1/SFR of said standard frame rate (SFR), each HDFR image slot having a duration τi with

OG Complex Work Unit Math
presenting said image data of said first feed and said at least second feed in a time-sliced multiplexed manner on said active display in said nd HDFR image slots of each standard frame rate time interval, wherein a time-integrated luminance of said first sequence of image data presented during a standard frame rate time interval is higher than a sum of time-integrated luminances of said second sequences of image data;
wherein at least two feeds of said first feed and said at least one second feed comprise said second homogenous gray images obtained from said combination of said second sequence of image data and second complementary sequence of image data (F1k and C1k; F2k and C2k; F3k and C3k), said second homogenous gray images being presented at equal luminance on said active display and being evenly distributed within said nd HDFR image slots in such a manner that luminance changes of said active display occur at frequencies greater than or equal to twice said standard frame rate (SFR);
wherein:
said first feed of said first sequence of image data (F0k) further comprises a first complementary sequence of image data (C0k) consisting of inverse/complementary image data to said first sequence of image data such that a combination of each image of said first sequence of image data and said first complementary sequence of image data (F0K and C0k) results in first homogenous gray images, and
gray images of said at least two feeds comprise first homogenous gray images from said first feed (F0K and C0k) and second homogenous gray images from said second feed (F1k and C1k), wherein at least one of the nd HDFR image slots shows a regular representation of the first sequence of image data at a first luminance, one of the nd HDFR image slots shows a representation of the second sequence of image data, one of the nd HDFR image slots shows a representation of the second complementary sequence of image data, one of the nd HDFR image slots shows a representation of the first sequence of image data at a luminance lower than the first luminance and one of the nd HDFR image slots shows a representation of the first complementary sequence of image data at a luminance lower than the first luminance.