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US 7,900,070 B2Granted
Power saving method of bi-directional communication wireless periheral device
AssigneeIntegrated System Solution Corp.
InventorsHsin-Ju Wu, Dar-chern Su, Albert Chen
Life of this patent
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Abstract
A power saving method of a bi-directional communication wireless peripheral device includes providing a wireless communication protocol between a host and the bi-directional communication wireless peripheral device; establishing a bi-directional communication wireless link between the host and the bi-directional communication wireless peripheral device through the wireless communication protocol; and enter a power off mode when the bi-directional communication wireless link does not exist.
Claims6
A power saving method for a bi-directional communication wireless peripheral device in communication with a host, comprising:
- providing a wireless communication protocol between the host and the bi-directional communication wireless peripheral device;
- establishing a bi-directional communication wireless link between the host and the bi-directional communication wireless peripheral device through the wireless communication protocol;
- and
- entering a power off mode when the bi-directional communication wireless link does not exist, wherein in the power off mode, a plurality of functional modules in the bi-directional communication wireless peripheral device is in a non-operating state,
- wherein the bi-directional communication wireless peripheral device further comprises the following operational modes:
- an initial mode, a working mode, a stand-by mode, wherein in the initial mode, the functional modules of the bi-directional communication wireless peripheral device are activated, the bi-directional communication wireless link is attempted to be established, the working mode is entered when the bi-directional communication wireless link is established, and the power off mode is entered when the bi-directional communication wireless link fails to be established;
- in the working mode, the functional modules are in the operating state;
- and in the stand-by mode, a part of the functional modules are in the non-operating state, if the bi-directional communication wireless peripheral device receives a user operation in a first predetermined time, the bi-directional communication wireless peripheral device will enter the working mode from the stand-by mode, if the bi-directional communication wireless peripheral device does not receive a user operation for the first predetermined time or the bi-directional communication wireless link does not exist, the bi-directional communication wireless peripheral device will enter the power off mode from the stand-by mode.
5 more elements
A bi-directional communication wireless peripheral device, comprising:
- a plurality of functional modules;
- a wireless communication module, comprising a wireless communication protocol, for establishing a bi-directional communication wireless link to a host through the wireless communication protocol;
- and
- a power management apparatus, turning off the functional modules when the bi-directional communication wireless link does not exist, wherein the power management apparatus comprises:
- a state machine, comprising:
- an initial mode, for activating a plurality of functional modules of the bi-directional communication wireless peripheral device, establishing the bi-directional communication wireless link, entering a working mode when the bi-directional communication wireless link is established, and entering a power off mode when the bi-directional communication wireless link fails to be established;
- the working mode, in which the functional modules are in the operating state;
- a stand-by mode, in which a part of the functional modules are in the non-operating state, if the bi-directional communication wireless peripheral device in the stand-by mode receives a user operation in a predetermined time, the bi-directional communication wireless peripheral device will enter the working mode from the stand-by mode;
- and
- the power off mode, for making the functional modules being in the non-operating state,
- wherein when the bi-directional communication wireless link is established, enter the working mode;
- after the predetermined time since the bi-directional communication wireless peripheral device does not receive a user operation, enter the stand-by mode;
- and when the bi-directional communication wireless link does not exist, enter the power off mode.
10 more elements
Dependencies are inferred from the claim text.