Patent ID: 9219339
Filing Date: 2015-12-22
Classification: G06F,H01R

Abstract:
1. A computer host power management system having extension cord sockets, comprising: a socket body, in which the socket body includes at least an AC power output plughole and an AC power input plug, and each of such AC power output plugholes enables a connection to a computer host thereby providing AC power to the computer host; a control device, installed inside the socket body and comprising a first microprocessor and more than one USB port; wherein the first microprocessor is used to manage and run the operations of the control device; the more than one USB port is electrically connected to the first microprocessor in order to electrically connect the computer host to the USB port through a USB transmission line such that the computer host can transfer signals to the first microprocessor and the first microprocessor can return signals to the computer host via the USB transmission line; a power supply device, installed inside the socket body and comprising an alternative current (AC)/direct current (DC) converter, a second microprocessor, inclusively at least a drive circuit and inclusively at least a power automatic switch; wherein the AC/DC converter receives AC power, converts the received AC power into DC power, and then provides it to circuits of the control device and the power supply device; the second microprocessor is electrically connected to the first microprocessor in the control device and receives signals from the first microprocessor, thus controlling the drive circuit to drive the operations of the power automatic switch in accordance with the received signals; the power automatic switch is connected to the drive circuit as well as the AC power input plug and AC power output plugholes of the socket body thereby controlling whether AC power should be outputted to the computer host through the AC power output plugholes; in which it is through the first microprocessor in the control device to determine whether the signal transferred from the computer host by way of the USB port is normal; in case of abnormal conditions, the first microprocessor determines the computer host as crashed or inoperable and drives the second microprocessor in the power supply device to cause the power automatic switch to turn off the AC power outputted by all of the AC power output plugholes, such that the computer host enters into the shutdown status; after a lapse of preset time, the second microprocessor drives once again the power automatic switch to turn on AC power thereby rebooting the computer host by the computer host power management system itself; wherein the second microprocessor includes a counter and a boot time setting value; when the AC power of all of the AC power output plugholes is stopped, the counter starts to count, and later, upon reaching the time setting value, the second microprocessor automatically causes the power automatic switch to turn on and thus resume the AC power of all of the AC power output plugholes.