US 12,088,421 B2
Control method and control apparatus for communication device, and communication system and storage medium
Lijun Mei, Foshan (CN); Liangwei Sun, Foshan (CN); Tian Wu, Foshan (CN); and Guofeng Liu, Foshan (CN)
Assigned to GD MIDEA HEATING & VENTILATING EQUIPMENT CO., LTD., Foshan (CN); and MIDEA GROUP CO., LTD., Foshan (CN)
Appl. No. 17/922,974
Filed by GD MIDEA HEATING & VENTILATING EQUIPMENT CO., LTD., Foshan (CN); and MIDEA GROUP CO., LTD., Foshan (CN)
PCT Filed Sep. 10, 2021, PCT No. PCT/CN2021/117575
§ 371(c)(1), (2) Date Nov. 3, 2022,
PCT Pub. No. WO2022/121410, PCT Pub. Date Jun. 16, 2022.
Claims priority of application No. 202011430827.8 (CN), filed on Dec. 9, 2020.
Prior Publication US 2023/0239167 A1, Jul. 27, 2023
Int. Cl. H04L 12/12 (2006.01); F24F 11/54 (2018.01); F24F 11/88 (2018.01)
CPC H04L 12/12 (2013.01) [F24F 11/54 (2018.01); F24F 11/88 (2018.01)] 6 Claims
OG exemplary drawing
 
1. A control method for a first communication device, wherein the first communication device and a second communication device are connected through a communication bus, and the control method comprises:
periodically outputting, a first level signal and a second level signal to the communication bus,
wherein the second communication device establishes a data connection with the first communication device based on that a level signal on the communication bus is the first level signal, and the second communication device establishes a power supply connection with the first communication device based on that the level signal on the communication bus is the second level signal; and
detecting, a level signal of the communication bus based on outputting the first level signal to the communication bus, to obtain the data sent by the second communication device;
sending, data to the second communication device based on that a level signal on the communication bus is switched from the second level signal to the first level signal;
sending, data to the second communication device in a form of a first signal and/or a second signal;
wherein the first signal comprises the second level signal and a third level signal and the sum of duration of the second level signal and duration of the third level signal is target duration,
the second signal comprises the second level signal, and duration of the second level signal is target duration;
wherein the periodically outputting the first level signal and the second level signal to the communication bus specifically comprises:
outputting, the first level signal to the communication bus, at each cycle; and
determining, duration of the communication bus outputting the first level signal is greater than or equal to a first duration, and outputting the second level signal to the communication bus,
wherein duration of the first communication device outputting the second level signal to the communication bus is greater than or equal to a second duration.