Synchronizing multiple user devices in an immersive media environment using time-of-flight light patterns

A non-transitory computer-readable medium storing instructions which, when executed by a processing system of a first device including at least one processor, cause the processing system to perform operations, the operations comprising:

• detecting a fiducial that is present in a light pattern projected by a second device, wherein the second device is present in a same surrounding environment as the first device;
• determining an identity of the second device based on an appearance of the fiducial;
• identifying an expected orientation of the fiducial within the light pattern, based on the identity of the second device;
• and
• determining a location of the second device relative to the first device, based on an observed orientation of the fiducial relative to the expected orientation of the fiducial.

A first device comprising:

• a processing system including at least one processor;
• and
• a non-transitory computer-readable medium storing instructions which, when executed by the processing system, cause the processing system to perform operations, the operations comprising:
• detecting a fiducial that is present in a light pattern projected by a second device, wherein the second device is present in a same surrounding environment as the first device;
• determining an identity of the second device based on an appearance of the fiducial;
• identifying an expected orientation of the fiducial within the light pattern, based on the identity of the second device;
• and
• determining a location of the second device relative to the first device, based on an observed orientation of the fiducial relative to the expected orientation of the fiducial.