Information handling system power control sensor
AssigneeDell Products L.P.
InventorsDaniel L. Hamlin, Jace W. Files, Preeth Kartikeyan Srinivasan, John Trevor Morrison
Life of this patent
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Abstract
An information handling system adapts a capacitive sensor from a primary function of an operational state to a secondary function of managing a power on command from a power off state to transition the information handling system to an operational state. For example, a touchscreen display or specific absorption rate sensor transitions to a low power state, such as with a reduced scan rate, when the information handling system is in a power off state and commands transition to a power on state in response to a touch that lasts a predetermined amount of time.
Claims20
An information handling system comprising:
- a housing;
- a processor disposed in the housing and operable to execute instructions that process information;
- a memory disposed in the housing and interfaced with the processor, the memory operable to store the instructions and information;
- a controller interfaced with the processor and operable to manage a power state of the processor;
- and
- a component disposed in the housing and having a function, the component including a capacitive sensor to perform the function, the component having an operational state to perform the function and a quiescent state with the function disabled, the capacitive sensor in the quiescent state operable to detect a predetermined touch and in response to command the controller to transition the processor from a power down state to a power up state.
A method for managing power state transitions at an information handling system, the method comprising:
- detecting touches at the information handling system in an operational state with a capacitive touch detection device in a primary mode having a primary scan rate;
- powering down the information handling system to a power off state;
- in response to the powering down, configuring the capacitive detection device to detect touches in a secondary mode having a secondary scan rate;
- and
- transitioning the information handling system from the power off state to the operational state in response to a predetermined touch at the capacitive touch detection device for a predetermined amount of time.
A system for power management of an information handling system comprising:
- an antenna configured to transmit wireless radio signals;
- a specific absorption rate sensor disposed proximate the antenna to detect human body proximity to the antenna for managing wireless signal transmission strength;
- and
- a controller interfaced with the specific absorption rate sensor, the controller scanning the specific absorption rate sensor at a first rate to manage wireless signal strength and at a second rate to detect a power on command, the controller applying the second rate in response to a power off state at the information handling system.
Dependencies are inferred from the claim text.