Abstract:
The methods for fine-grained power management of physical system memory allow portions of the system volatile memory to be independently power managed. The system volatile memory may be partitioned into a plurality of power management units (PMUs). Each PMU may have a pre-determined size or a variable size, which may be less than the size of a memory chip. Each PMU may be placed in a different memory state and independently power managed according to the memory state. At opportune times during the system active state, a fractional potion of the system volatile memory is shadowed into the system nonvolatile memory. Active data in the system volatile memory is rearranged prior to entering a power-saving mode and the PMUs containing the shadowed data may be powered off. Thus, power efficiency of the system volatile memory is improved.
Abstract:
A method, apparatus, and system are described in which a memory controller may have two or more registers to create and track zones of memory in a volatile memory device. The memory controller controls a power consumption state of a first zone of memory in the volatile memory device and a second zone of memory within the first volatile memory device on an individual basis; and one or more memory arrays contained within the first volatile memory device.
Abstract:
A wireless device is disclosed. The wireless device includes a wireless communication module, a data storage module, and a controller for controlling the storage and/or retrieval of data from the data storage module. The wireless communication module communicates with each of a plurality of remote devices and the data storage module defines a first storage area and a second storage area. The controller controls the communication of data between the first storage area and the remote device, and the second storage area and the remote device dependent upon access rights associated with the remote device. The first storage area typically defines a public storage area with which data is exchanged in a relatively free manner, and the second storage area typically defines a private storage area with which data is exchanged in a relatively restricted manner.
Abstract:
An embedded subsystem is coupled to a shared database is synchronized with the notebook and has access to the hard drive. The subsystem is in operation when the notebook is in low power mode.
Abstract:
Systems and methods of power management provide for controlling the idleness of a processor based on an operating system schedule. The idleness of at least one device is synchronized with the idleness of the processor. Idleness synchronization may involve deferring bus transactions, suspending memory refresh, turning off power to clock sources and turning off power to combinatorial logic during an idle window in the OS schedule.
Abstract:
A method is described that involves operating a computing system within a normal on state and transitioning from the normal on state to a main CPU/OS based state. In the main CPU/OS based state one or more components of the computing system are inactivated so as to cause the computing system to consume less power in the main CPU/OS based state than in the normal on state. The computing system is able to execute software application routines on a main CPU and a main OS of the computing system while in the main CPU/OS based state.
Abstract:
A computer includes a wireless personal area network (WPAN) interface, a wireless local area network (WLAN) interface and a wireless wide area network (WWAN) interface. A device communicating with the wireless personal area network can command the computer to perform actions using the wireless local area network interface or wireless wide area network interface.
Abstract:
In one embodiment, a data processing system includes, but is not limited to, a processor, a memory coupled to the processor, and a universal serial bus (USB) controller coupled to the processor and the memory. The USB controller includes a local memory to cache at least one activity descriptor of at least a portion of a periodic schedule having multiple frames stored in the main memory. The USB controller defers to service an active USB device described by one of the activity descriptors until a corresponding frame is scheduled to be serviced subsequently. Other methods and apparatuses are also described.
Abstract:
A method and apparatus for a user to interface with a mobile computing device is disclosed. In one embodiment, a method comprises sharing a Bluetooth communications module between a primary processor system and a secondary processor system.
Abstract:
Techniques that may be utilized in reduction of snoop accesses are described. In one embodiment, a method includes receiving a page snoop command that identifies a page address corresponding to a memory access request by an input/output (I/O) device. One or more cache lines that match the page address may be evicted. Furthermore, memory access by a processor core may be monitored to determine whether the processor core memory access is within the page address.