Patent ID: 11870596
Assignee: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A power sourcing equipment, comprising:
an input terminal configured to receive a power signal;
an output terminal electrically coupled to a powered device via a coaxial cable, the coaxial cable being configured to transmit the power signal from the power sourcing equipment to the powered device or transmit a data signal from the powered device to the power sourcing equipment;
a switch coupled between the input terminal and the output terminal, wherein when the switch is turned on, the power sourcing equipment powers on the powered device with the power signal, and when the switch is turned off, the power sourcing equipment is powered on by an external power source; and
a load detection circuit configured to determinate whether a load of the powered device is disconnected, wherein a first determination criterion is followed when the switch is turned on, and a second determination criterion which is different from the first determination criterion is followed when the switch is turned off.