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US 2006/0132109 A1Published application
Audio noise mitigation for power state transitions
AssigneeIntel Corporation
InventorsJorge Rodriguez, Leslie Cline, Barnes Cooper
Life of this patent
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Abstract
An audio noise mitigation approach. For one aspect, a first voltage associated with a first power management state is provided. A signal responsive to an indication associated with at least a first type of periodic exit event is received and responsive to the signal, a transition to a second voltage associated with a second state is initiated, a rate of the transition to the second voltage being slower than a similar voltage transition initiated in response to a non-periodic exit event.
Claims26
A method comprising:
- providing a first voltage associated with a first power management state;
- receiving a first signal responsive to an indication associated with a periodic exit event;
- and
- responsive to the first signal, initiating a transition to a second voltage associated with a second state, a first rate of the transition to the second voltage being slower than second rate associated with a similar voltage transition in response to a non-periodic exit event.
1 more element
A method comprising:
- receiving a signal responsive to an indication associated with an exit event while providing a first voltage;
- if the indication is associated with at least a first type of periodic exit event, initiating a transition to a second, higher voltage at a first rate;
- and
- if the indication is associated with a second type of exit event, initiating a transition to the second, higher voltage at a second faster rate.
1 more element
An apparatus comprising:
- a voltage source to provide at least a first voltage and a second higher voltage;
- an exit policy control module responsive to at least a first signal to indicate one of a slow exit policy and a fast exit policy depending on a type of the exit event;
- and
- a slew rate controller responsive to the exit policy control module to control a rate of transition between the first voltage and the second voltage.
1 more element
A system comprising:
- a bus to communicate information;
- a processor coupled to the bus to process instructions;
- a battery adapter to receive a battery capable of providing power to the system;
- and
- a voltage regulator to provide an operating voltage to the processor, the voltage regulator being responsive to a first signal responsive to an indication associated with an exit event to control a rate of transition from a first lower voltage to a second higher voltage depending on a type of the exit event.
2 more elements
Dependencies are inferred from the claim text.