Abstract: A battery emulator can include an active voltage controlled device (VCD), one or more selectable RC filter banks, and a controller coupled to the active VCD and the one or more selectable RC filter banks. The controller may be configured to sense a load on the battery emulator and control the active VCD so as to implement a low frequency battery transfer function derived from a battery model. The controller may be further configured to control the one or more selectable RC filter banks so as to implement a high frequency battery transfer function derived from the battery model. The controller may further include a gas gauge emulation module configured to interface with a gas gauge interface of a device under test. The controller may further include a communications module configured to interface with a test host.

Abstract: A computing device includes a low power auxiliary processor, such as a processor on a wireless card or sub-system, which is able to takeover processing in place of the computing device's central processing unit (CPU). Operating the computing device on the auxiliary processor draws less power from the computing device battery, enabling extended operation in an auxiliary processor mode. When in this mode, the auxiliary processor controls peripherals and provides the system functionality while the CPU is deactivated, such as in “off,” “standby” or “sleep” modes. In the auxiliary processor mode, the computing device can accomplish useful tasks, such as sending/receiving electronic mail, displaying electronic documents and accessing a network while drawing minimal power from the battery. Transitions between the normal operating mode and auxiliary processor mode may be transparent to users. Such a computer may display instant on, always on and always connected operating features.

Abstract: A computing device includes a low power auxiliary processor, such as a processor on a wireless card or sub-system, which is able to takeover processing in place of the computing device's central processing unit (CPU). Operating the computing device on the auxiliary processor draws less power from the computing device battery, enabling extended operation in an auxiliary processor mode. When in this mode, the auxiliary processor controls peripherals and provides the system functionality while the CPU is deactivated, such as in “off,” “standby” or “sleep” modes. In the auxiliary processor mode, the computing device can accomplish useful tasks, such as sending/receiving electronic mail, displaying electronic documents and accessing a network while drawing minimal power from the battery. Transitions between the normal operating mode and auxiliary processor mode may be transparent to users. Such a computer may display instant on, always on and always connected operating features.