Power control method for storage device and electronic system using the same
AssigneeWistron Corporation
InventorsSyu-Siang Lee, Zh-Wei Zhang
Life of this patent
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Abstract
A framework for system power control of a dual-port non-volatile memory storage device is provided. The electronic system includes a storage device, two hosts and a control circuit within each of the two hosts. Each host filters signals for shortly turning off a power supply of the storage device during a process of boot and reboot of the host. When one of the hosts enters a turn-off state, it is detected whether another one of the hosts is running, and the one of the hosts does not control the power supply if the another one of the hosts is running. Two control signals of the two hosts control the power supply of the storage device through an AND gate.
Claims10
An electronic system, comprising:
- a storage device;
- a first host, coupled to the storage device and configured to access the storage device;
- and
- a second host, coupled to the storage device and configured to access the storage device,
- wherein the first host comprises a first controller, the first controller is coupled to the second host and the storage device, and determines to allow or prohibit the first host to control a power supply of the storage device according to a first computer state of the first host and a second computer state of the second host.
A power control method, adapted to an electronic system, wherein the electronic system comprises a storage device and a first host and a second host used for accessing the storage device, the power control method comprising:
- providing a first controller to the first host, wherein the first controller is coupled to the second host and the storage device;
- obtaining a first computer state of the first host and a second computer state of the second host by the first controller;
- and
- determining to allow or prohibit the first host to control a power supply of the storage device according to the first computer state and the second computer state by the first controller.
Dependencies are inferred from the claim text.