US 11,809,251 B2
Power control device, display device, and power control method
Hideaki Hosono, Tokyo (JP)
Assigned to Sharp NEC Display Solutions, Ltd., Tokyo (JP)
Filed by Sharp NEC Display Solutions, Ltd., Tokyo (JP)
Filed on Jun. 14, 2022, as Appl. No. 17/840,043.
Application 17/840,043 is a continuation of application No. PCT/JP2019/050825, filed on Dec. 25, 2019.
Prior Publication US 2022/0308649 A1, Sep. 29, 2022
Int. Cl. G06F 1/28 (2006.01); G06F 1/30 (2006.01); G06F 1/26 (2006.01)
CPC G06F 1/28 (2013.01) [G06F 1/266 (2013.01); G06F 1/30 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A power control device comprising:
a first overcurrent detecting unit configured to detect whether or not a current supplied from a power source unit to an external device exceeds a first criterion value;
a second overcurrent detecting unit configured to detect whether or not the current supplied from the power source unit to the external device exceeds a second criterion value that is a criterion value higher than the first criterion value;
a timer unit that is set with a time period from a first point of time at which switching from electric power supplied from the power source unit to the external device in a period, in which a negotiation is performed, to electric power corresponding to a result of the negotiation with the external device is performed into to a second point of time before the supply of the electric power becomes stable; and
a control unit configured to perform overcurrent detection using the second overcurrent detecting unit before the negotiation ends and, the control unit configured to invalidate the overcurrent detection using the second overcurrent detecting unit and to validate the overcurrent detection using the first overcurrent detecting unit when the negotiation ends, and the time that is set in the timer unit elapses.