Patent ID: 9229512
Filing Date: 2016-01-05
CPC Classification: G06F

Claim Text:
1. A host device that supplies electric power to a terminal device, comprising: a host-side connector, including a first end and a second end, the first end being connectable to a cable; a power supply unit configured to output a first voltage; a host-side power supply line connecting the power supply unit to the second end of the host-side connector; a first current measurement unit configured to measure a first current flowing through the host-side power supply line; and a host-side control unit configured to: wherein, when the second voltage is larger than a maximum voltage of a predetermined first reference range associated with the reference point on the terminal-device-side power supply line, the power supply unit is further configured to adjust the first voltage according to the first resistance value supplied from the host-side control unit and the first current value measured by the first current measurement unit at that moment so that the second voltage falls within a minimum voltage and the maximum voltage of the predetermined first reference range, and wherein, when the second voltage is smaller than the minimum voltage of the predetermined first reference range, the power supply unit is further configured to adjust the first voltage according to the first resistance value supplied from the host-side control unit and the first current value measured by the first current measurement unit at that moment so that the second voltage falls within the minimum voltage and the maximum voltage of the predetermined first reference range.