Patent ID: 11870493
Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. The communication method of claim 1, wherein the receiving method further comprises the following steps:
before the step of capturing the first frames at the camera frame rate,
capturing a plurality of second frames at the camera frame rate, wherein each second frame comprises a corresponding second area caused by a corresponding signal pulse of a second portion of the first signal pulses; and
detecting the corresponding second area in each second frame, to obtain a position of the corresponding second area; and

during the step of capturing the first frames at the camera frame rate,
autofocusing on the first invisible light signal emitter when the first invisible light signal emitter emits the first portion of the first signal pulses by identifying the first invisible light signal emitter as a subject for subject tracking using the position of each of at least one second area of the second areas.