US 11,886,265 B2
Source device and power control method of source device
Zhenliu Li, Tokyo (JP)
Assigned to SHARP NEC DISPLAY SOLUTIONS, LTD., Tokyo (JP)
Filed by Sharp NEC Display Solutions, Ltd., Tokyo (JP)
Filed on Jan. 28, 2022, as Appl. No. 17/587,527.
Application 17/587,527 is a continuation of application No. PCT/JP2019/032959, filed on Aug. 23, 2019.
Prior Publication US 2022/0155843 A1, May 19, 2022
Int. Cl. G06F 1/3206 (2019.01); G06F 1/3287 (2019.01); G06F 1/3296 (2019.01)
CPC G06F 1/3206 (2013.01) [G06F 1/3287 (2013.01); G06F 1/3296 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A source device that is connected to a sink device to supply power to the sink device, the source device comprising:
one or more memories that store processor-executable instructions,
one or more hardware processors configured to execute the processor-executable instructions to cause the one or more hardware processors to:
perform negotiation with the sink device on the basis of a predetermined power standard;
perform control of supplying power to the sink device on the basis of a first power information determined by the negotiation;
detect power required by the sink device;
receive an input of the first power information, wherein the first power information has been determined by the negotiation, and the first power information includes a voltage value and a current value of power;
receive an input of a second power information, wherein the second power information includes a voltage value and a current value of power detected;
generate a third power information, wherein the third power information includes a voltage value and a current value on the basis of both the inputs of the first power information and the second power information and on the basis of the predetermined power standard;
perform negotiation with the sink device again on the basis of the third power information generated; and
when a current value of the second power information gets greater than a set threshold value while a power determined being supplied to the sink device as a result of the negotiation, change the third power information by setting the current value of the first power information determined by the negotiation to be lowered by a predetermined current value in the third power information, and perform negotiation with the sink device again on the basis of the third power information changed.