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Method of communication link acquisition using search pattern

專利號
US10868615B1
公開日期
2020-12-15
申請人
X DEVELOPMENT LLC（US CA Mountain View）
發(fā)明人
Paul Csonka; Edward Allen Keyes
IPC分類
H04B10/27; H04B10/11
技術領域
beacon,device,200b,200a,search,secondary,beam,primary,optical,pattern
地域： CA CA Mountain View

摘要

Aspects of the disclosure provide for a method of forming a communication link between two communication devices using a primary search pattern and a secondary search pattern. A misalignment between a first optical system of a first communication device and a second optical system of a second communication device is detected. The first optical system is rotated according to the primary search pattern, and the second optical system according to the secondary search pattern. At the second communication device, a set of frames is captured. Then, it is determined whether a beacon beam transmitted from the first communication device is detected in the one or more of the captured frames. When it is determined that the beacon beam is detected, the communication link is formed between the first communication device and the second communication device.

說明書

If the secondary device establishes a communication link 22 with the primary device during the second set amount of time, the primary device may stay in the starting beacon position. According to the primary search pattern 800, the first optical system 250a and beacon beam 24a is configured to stay in the beacon position pointing towards the best estimated location of second optical system 250b for approximately 0.048 seconds. Second communication device 200b detects beacon beam 24a transmitted from the first communication device 200a within the 0.048 seconds and establishes a communication link 22a, as shown in FIG. 2. In this case, first communication device 200a does not move first optical system 250a according to a search pattern. First communication device 200a may track second communication device 200b and establish another communication link 22b with second communication device 200b. In some examples, the primary device may establish a second communication link 22a with the secondary device.

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