Apparatus, system, and method for interactive wireless charging of head-mounted displays

Patent metadata

Field	Value
Publication number	US-12374940-B1
Application number	US-202318170882-A
Country	US
Kind code	B1
Filing date	Feb 17, 2023
Priority date	Feb 17, 2023
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

A system comprising (1) a wireless charger configured to wirelessly transfer power within a coverage area, (2) a head-mounted display dimensioned to be worn by a user, wherein the head-mounted display is configured to obtain data indicative of a current position of the head-mounted display relative to the coverage area, and (3) at least one processing device configured to provide at least one indicator of an effective charging position for the head-mounted display relative to the coverage area based at least in part on the data. Various other apparatuses, systems, and methods are also disclosed.

First claim

What is claimed is:

1. A system comprising:
a wireless charger configured to wirelessly transfer power within a coverage area;
a head-mounted display dimensioned to be worn by a user, wherein the head-mounted display is configured to obtain data indicative of a current position of the head-mounted display relative to the coverage area; and
at least one processing device configured to provide at least one indicator of an effective charging position for the head-mounted display relative to the coverage area based at least in part on the data, wherein the indicator of the effective charging position comprises a visual representation of a map that illustrates a plurality of charging zones within the coverage area.

2. The system of claim 1 , wherein:
the processing device is incorporated into the head-mounted display; and
the head-mounted display is further configured to provide the indicator of the effective charging position for presentation to the user.

3. The system of claim 2 , wherein the map further illustrates the effective charging position relative to the plurality of charging zones.

4. The system of claim 3 , wherein the indicator further comprises a visual marker that indicates where the user is to place the head-mounted display to achieve the effective charging position.

5. The system of claim 4 , wherein the charging zones comprise at least one of:
a first charging zone; or
a second charging zone that is more effective than the first charging zone.

6. The system of claim 1 , wherein the data comprises at least one of:
simultaneous localization and mapping (SLAM) data that corresponds to the current position of the head-mounted display; or
power-transfer data that represents an amount of power transferred by the wireless charger to the head-mounted display in the current position.

7. The system of claim 6 , wherein:
the wireless charger is configured to provide a fiducial marker to the head-mounted display; and
the SLAM data accounts for the fiducial marker.

8. The system of claim 7 , wherein the fiducial marker comprises at least one of:
a physical feature that indicates a location of the wireless charger; or
a beacon that indicates a location of the wireless charger.

9. The system of claim 1 , wherein the wireless charger comprises a near-field charger that is hidden from view of the head-mounted display.

10. The system of claim 1 , wherein:
the wireless charger comprises a far-field charger configured to wirelessly transmits a charging beam;
the processing device is incorporated into the far-field charger; and
the wireless charger is further configured to modify the charging beam to achieve the effective charging position for the head-mounted display based at least in part on the indicator.

11. The system of claim 10 , wherein the wireless charger is configured to modify the charging beam by at least one of:
steering the charging beam of the far-field charger to the effective charging position for the head-mounted display based at least in part on the indicator; or
changing at least one setting of the far-field charger to alter a charging beam of the far-field charger for the effective charging position for the head-mounted display.

12. The system of claim 1 , wherein the processing device is further configured to direct the wireless charger or the head-mounted display to provide, for presentation to the user, a recommendation on where the user is to place the wireless charger to achieve the effective charging position based at least in part on the indicator.

13. The system of claim 12 , wherein:
the recommendation comprises a visual feature indicating where the user is to place the wireless charger to achieve the effective charging position;
the processing device is incorporated into the head-mounted display; and
the head-mounted display is further configured to provide the visual feature for visual presentation to the user.

14. A head-mounted display comprising:
at least one camera configured to capture imagery of a surrounding environment;
a wireless receiver configured to receive, from a wireless charger located in the surrounding environment, power to charge a battery; and
at least one processing device configured to:
generate at least one indicator of an effective charging position relative to a coverage area based at least in part on the imagery, wherein the indicator of the effective charging position comprises a visual representation of a map that illustrates a plurality of charging zones within the coverage area; and
provide the indicator of the effective charging position for presentation to a user.

15. The head-mounted display of claim 14 , wherein the map further illustrates the effective charging position relative to the plurality of charging zones.

16. The head-mounted display of claim 15 , wherein the indicator further comprises a visual marker that indicates where the user is to place the head-mounted display to achieve the effective charging position.

17. The head-mounted display of claim 16 , wherein the charging zones comprise at least one of:
a first charging zone; or
a second charging zone that is more effective than the first charging zone.

18. The head-mounted display of claim 14 , wherein:
the imagery is represented as simultaneous localization and mapping (SLAM) data; and
the processing device is further configured to generate the indicator of the effective charging position based at least in part on the SLAM data.

19. The head-mounted display of claim 14 , wherein the processing device is further configured to:
identify an amount of power received by the wireless receiver from the wireless charger; and
generate the indicator of the effective charging position based at least in part on the imagery and the amount of power received by the wireless receiver.

20. A method comprising:
obtaining, by a head-mounted display worn by a user, data indicative of a current position of the head-mounted display relative to a coverage area of a wireless charger;
generating, based at least in part on the data, at least one indicator of an effective charging position for the head-mounted display relative to the coverage area, wherein the indicator of the effective charging position comprises a visual representation of a map that illustrates a plurality of charging zones within the coverage area; and
providing, for presentation to the user, the indicator of the effective charging position to enable the user to place the head-mounted display in the effective charging position.

Assignees

• Meta Platforms Tech Llc

Inventors

• Ho John
• Zhu Jiang
• Evans Duane Martin
• Hammer James Andrew

Classifications

• G06F1/163

  Wearable computers, e.g. on a belt · CPC title

• G02B27/0172

  characterised by optical features · CPC title

• G02B2027/0138

  comprising image capture systems, e.g. camera · CPC title

• G02B2027/0141

  characterised by the informative content of the display · CPC title

• H02J50/90 Primary

  involving detection or optimisation of position, e.g. alignment · CPC title