US 12,141,371 B2
Coordinating alignment of coordinate systems used for a computer generated reality device and a haptic device
José Araújo, Stockholm (SE); and Zeid Al-Husseiny, Järfälla (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Aug. 10, 2023, as Appl. No. 18/447,376.
Application 18/447,376 is a continuation of application No. 17/977,149, filed on Oct. 31, 2022, granted, now 11,868,545.
Application 17/977,149 is a continuation of application No. 16/963,788, granted, now 11,526,216, previously published as PCT/EP2018/054481, filed on Feb. 23, 2018.
Prior Publication US 2023/0384872 A1, Nov. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/0346 (2013.01); G06F 3/01 (2006.01); G06T 19/00 (2011.01); G06V 10/75 (2022.01)
CPC G06F 3/0346 (2013.01) [G06F 3/012 (2013.01); G06F 3/014 (2013.01); G06T 19/006 (2013.01); G06V 10/76 (2022.01)] 11 Claims
OG exemplary drawing
 
1. A second electronic device for measuring a position of a first electronic device relative to the second electronic device, the second electronic device comprising:
a display device which allows a user to see real-world objects through the display device;
a user-facing camera;
a processor; and
a memory storing program code that is executed by the processor to perform operations comprising:
capturing a digital picture of a reflection from a user's eye using the user-facing camera, wherein the reflection from the user's eye includes a first component that is a reflection of a virtual computer-generated object displayed on the display device and a second component that is a reflection of light from a real world object;
processing the digital picture to extract a measure of misalignment between the virtual computer-generated object and the real-world object; and
responsive to the measure of misalignment not satisfying a defined alignment rule, generating an updated transformation matrix.