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

Claim 7:
8. The communication method of claim 7, wherein
each second frame further comprises at least one corresponding third area corresponding to at least one other sending device, wherein each of at least one corresponding third area is caused by a corresponding signal pulse of second signal pulses emitted by a second invisible light signal emitter of a corresponding other sending device of the at least one other sending device, and the second signal pulses correspond to the second frames;
the step of detecting the corresponding second area in each second frame, to obtain a position of the corresponding second area comprises:
detecting the corresponding second area and the at least one corresponding third area in each second frame, to obtain a position of the corresponding second area and a position of each of the at least one corresponding third area; and
selecting to use the position of each of at least one second area of the second areas for autofocusing based on an area size of the second area in one of the second frames being the biggest among the second area and the at least one third area in the one of the second frames.