Power smart peripheral devices with external power supplies
First Claim
1. A peripheral device comprising:
- a host interface configured to receive and transmit data between the peripheral device and a host;
a power interface configured to receive power from a power source, wherein the power source is separate from the peripheral device and the host;
a switch having a first state and a second state;
a control module configured to monitor the host interface and generate a control signal to transition the switch to the second state when the host interface does not receive an expected signal from the host; and
at least one regulator configured to power the control module and a circuit of the peripheral device based on the power received from the power source, wherein the control module is separate from the circuit,wherein the switch is configured to activate the control module, the at least one regulator and the circuit when in the first state and deactivate the control module, the at least one regulator and the circuit when in the second state.
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Accused Products
Abstract
A peripheral device includes a host interface, a power interface, a switch, a control module, and a regulator. The host interface transfers data between the peripheral device and a host. The power interface receives power from a power source. The power source is separate from the peripheral device and the host. The control module monitors the host interface and generates a control signal to transition the switch from a first state to a second state when the host interface does not receive an expected signal from the host. The regulator powers the control module and a circuit of the peripheral device based on the power received from the power source. The control module is separate from the circuit. The switch activates the control module, the regulator and the circuit when in the first state and deactivates the control module, the regulator and the circuit when in the second state.
32 Citations
21 Claims
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1. A peripheral device comprising:
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a host interface configured to receive and transmit data between the peripheral device and a host; a power interface configured to receive power from a power source, wherein the power source is separate from the peripheral device and the host; a switch having a first state and a second state; a control module configured to monitor the host interface and generate a control signal to transition the switch to the second state when the host interface does not receive an expected signal from the host; and at least one regulator configured to power the control module and a circuit of the peripheral device based on the power received from the power source, wherein the control module is separate from the circuit, wherein the switch is configured to activate the control module, the at least one regulator and the circuit when in the first state and deactivate the control module, the at least one regulator and the circuit when in the second state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method comprising:
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receiving and transmitting data between a peripheral device and a host via a host interface of the host; receiving power at the peripheral device from a power source, wherein the power source is separate from the peripheral device and the host; monitoring the host interface; generating a control signal to transition a switch from a first state to a second state when the host interface does not receive an expected signal from the host; power a control module and a circuit of the peripheral device via at least one regulator based on the power received from the power source, wherein the control module is separate from the circuit; activating the control module, the at least one regulator and the circuit via the switch when the switch is in the first state; and deactivating the control module, the at least one regulator and the circuit via the switch when the switch is in the second state. - View Dependent Claims (20, 21)
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Specification