The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Feb. 17, 2026

Filed:

Nov. 13, 2023
Applicant:

Google Llc, Mountain View, CA (US);

Inventors:

Joshua Anthony Hernandez, Redwood City, CA (US);

Zhiheng Jia, Sunnyvale, CA (US);

Chao Guo, Los Altos, CA (US);

Qiyue Zhang, Santa Clara, CA (US);

Assignee:

GOOGLE LLC, Mountain View, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 13/327 (2018.01); G02B 27/01 (2006.01); H04N 13/344 (2018.01); H04N 13/383 (2018.01); H04N 13/398 (2018.01);
U.S. Cl.
CPC ...
H04N 13/327 (2018.05); G02B 27/0172 (2013.01); G02B 27/0179 (2013.01); H04N 13/344 (2018.05); H04N 13/383 (2018.05); H04N 13/398 (2018.05); G02B 2027/0134 (2013.01); G02B 2027/0178 (2013.01); G02B 2027/0187 (2013.01);
Abstract

A method for determining a transformation between frames of reference for two inertial measurement units (IMUs) is disclosed. The transformation includes biases associated with the measurements of each of the IMUs and the extrinsic details can include relative differences in the position and orientation of the IMUs. The IMUs may be mechanically coupled to a frame so that their movements are related. The IMUs can be coupled to a pair of displays in a head-mounted device (e.g., smart glasses) so that a display spacing between for a pair of stereoscopic displays can be accurately determined and adjusted to match the eyes of the user.


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