摘要:
A method and apparatus for recovering from a low power state in a computing system is disclosed. In one embodiment of the method, the computing system enters the low power state from a standard power state after an activity detector indicates a user controlled peripheral device connected to the computer system has been inactive for a period of time. To enter the low power state, the method disconnects the user controlled peripheral device from a host controller, while continuing to supply power to the user controlled peripheral device and shutting off power to the host controller. The method returns the computer system to the standard power state when the activity detector indicates the user controlled peripheral device has become active. To return to the standard power state, power is restored to the host controller and the user controlled peripheral device is reconnected to the host controller.
摘要:
A data processing system that uses memory power reduction in a sleep state. The system can include a volatile memory and at least one data input peripheral and a logic circuit that is configured to manage power consumption of the data processing system for a sleep of the system. The logic circuit can be coupled to the volatile memory and can be configured to turn off power to the volatile memory in response to an event, occurring during the sleep state, but to otherwise remain in the sleep state. The sleep state can be an ACPI complaint S3 sleep state in which the volatile memory, such as DRAM, is powered off after a period of user inactivity during the S3 sleep state.
摘要:
Electronic devices may be provided with one or more input components and one or more circuit boards. An input component may include sensor circuitry supported by a first circuit board and controller circuitry supported by a second circuit board. In other embodiments, the sensor circuitry may be coupled to a first portion of a first surface of a circuit board and the controller circuitry may be coupled to a second portion of the first surface of the same circuit board. The input component may be a multi-touch input component, such as a multi-touch trackpad.