Method and apparatus for system power control through sensing peripheral power consumption
AssigneeApple Inc.
InventorKwanghoi Koo
Life of this patent
Estimating the term…
Abstract
A method and apparatus senses peripheral power consumption for system power control. In a digital processing system, an increase in current drawn by a peripheral device coupled to the digital processing system while the digital processing system is in a reduced power consumption state is sensed, wherein the increase in current drawn provides a current draw detect signal.
Claims39
A method in a digital processing system, said method comprising sensing an increase in current drawn by a peripheral device coupled to the digital processing system while the digital processing system is in a reduced power consumption state, wherein the increase in current drawn provides a current draw detect signal.
(canceled)
A method comprising:
- sensing an increase in current drawn by a peripheral device coupled to a digital processing system while the digital processing system is in a reduced power consumption state, the increase caused by insertion of a removable machine readable media into the peripheral device;
- and
- executing content on the media in response to the sensing.
13-24. (canceled)
A digital processing system comprising:
- a current sensor coupled to a peripheral device which is coupled to the digital processing system;
- and
- a processor coupled to the peripheral device, the current sensor detecting an increase in current drawn by the peripheral device during a reduced power consumption mode, the processor, in response to a signal from the current sensor, causing the digital processing system to enter into a higher power consumption mode.
(canceled)
33-36. (canceled)
An article comprising a machine-readable medium having stored thereon a plurality of instructions, which if executed by a machine, cause the machine to perform:
- sensing an increase in current drawn by a peripheral device, wherein the increase in current drawn provides a current draw detect signal.
(canceled)
An apparatus comprising:
- a current sensing means for sensing current drawn by a peripheral device coupled to a digital processing system;
- and
- a processing means for increasing a level of power consumption of the digital processing system from a reduced power consumption mode to a higher power consumption mode upon receipt of a signal from the current sensing means indicating that the current drawn by the peripheral device has changed.
(canceled)
A method for waking a computer from a sleep mode comprising:
- determining a current consumption threshold for a drive of a computer, below which threshold the computer is in a sleep mode;
- enabling detection of current flowing to the drive while the computer is in the sleep mode;
- and
- enabling transmission of a wake-up signal to wake the computer from the sleep mode when the current flowing to the drive while the computer is in the sleep mode increases above the current consumption threshold for the drive.
Dependencies are inferred from the claim text.