Device charging system
AssigneeDell Products L.P.
InventorsGreg R. Fiebrich, Douglas Messick, Kyle Cross
Life of this patent
Estimating the term…
Abstract
Optimized bus powered peripheral battery charging includes a circuit to initiate a change in an advanced configuration and power interface (ACPI) state in a controller allowing charging of a peripheral device battery, the circuit including a signal converter coupled between an input port and the controller to sense when a the peripheral device battery is coupled to an input port and to restrict the controller from changing ACPI state multiple times for a given peripheral device battery coupling; and a ground loop detector coupled in parallel to the signal converter between the input port and the controller to allow the controller to know that the peripheral device battery has maintained being coupled to the input port.
Claims13
A device battery charging system, comprising:
- a power rail;
- an input port that is coupled to the power rail;
- and
- a controller that is coupled to the input port and the power rail, wherein the controller is configured to:
- detect a coupling of a device battery to the input port when the power rail is not being supplied power such that the power rail does not supply power to the input port, and the input port is not being supplied power from the device battery;
- and
- cause, in response to detecting the coupling of the device battery to the input port, the power rail to provide power from a charging battery to the input port to charge the device battery.
An information handling system (IHS), comprising:
- a processing system;
- a memory system coupled to the processing system;
- a charging battery coupled to the processing system;
- an input port coupled to the processing system and the charging battery;
- and
- a controller coupled to the charging battery and the input port, wherein the controller is configured to:
- detect a coupling of a device battery to the input port when the power rail is not being supplied power such that the power rail does not supply power to the input port, and the input port is not being supplied power from the device battery;
- and
- cause, in response to detecting the coupling of the device battery to the input port, power from the charging battery to be provided to the input port to charge the device battery.
Dependencies are inferred from the claim text.