Device charging system
First Claim
1. A device battery charging system, comprising:
- an input port that is operable to couple to a device battery;
a controller that is operable to enable power from a charging battery in a charging system to be supplied to the input port;
a converter that is coupled between the input port and the controller, wherein the converter is operable to sense the coupling of the device battery to the input port when the input port is not being supplied power from the charging battery and, in response, send a signal to the controller, and wherein in response to the signal, the controller is operable to change a power management state of the charging system such that power from the charging battery is supplied to the input port to charge the device battery, and wherein the converter is also operable to restrict the controller from changing the power management state of the charging system multiple times for a given coupling of the device battery to the input port; and
a detector that is coupled between the input port and the controller and that is operable to allow the controller to determine that the device battery has maintained being coupled to the input port upon the charging system changing power management states and entering a run time state.
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Accused Products
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.
50 Citations
20 Claims
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1. A device battery charging system, comprising:
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an input port that is operable to couple to a device battery; a controller that is operable to enable power from a charging battery in a charging system to be supplied to the input port; a converter that is coupled between the input port and the controller, wherein the converter is operable to sense the coupling of the device battery to the input port when the input port is not being supplied power from the charging battery and, in response, send a signal to the controller, and wherein in response to the signal, the controller is operable to change a power management state of the charging system such that power from the charging battery is supplied to the input port to charge the device battery, and wherein the converter is also operable to restrict the controller from changing the power management state of the charging system multiple times for a given coupling of the device battery to the input port; and a detector that is coupled between the input port and the controller and that is operable to allow the controller to determine that the device battery has maintained being coupled to the input port upon the charging system changing power management states and entering a run time state. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An information handling system (IHS), comprising:
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a processor; a charging battery coupled to the processor; a controller coupled to the processor; an input port coupled to the processor; a converter that is coupled between the input port and the controller and that is operable to sense that a device battery is coupled to the input port when the input port is not being supplied power from the charging battery and, in response, send a signal to the controller, wherein in response to the signal, the controller is operable to change a power management state of the IHS such that power from the charging battery is supplied to the input port to charge the device battery, and wherein the converter is also operable to restrict the controller from changing the power management state of the IHS multiple times for a given coupling of the device battery to the input port; and a detector that is coupled between the input port and the controller and that is operable to allow the controller to determine that the device battery has maintained being coupled to the input port upon the IHS changing power management states and entering a run time state. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A device battery charging method, comprising:
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providing a charging system including a charging battery and an input port coupled to the charging battery; detecting the coupling of a device battery to the input port when the input port is not being supplied power and, in response, changing a power management state of the charging system such that power from the charging battery is supplied to the input port to charge the device battery; restricting the changing of the power management state of the charging system multiple times for a given coupling of the device battery to the input port; and determining that the device battery has maintained being coupled to the input port upon the charging system changing power management states to a run time state. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification