Abstract: Systems and methods for location, motion, and contact detection and tracking in a portable networked device are disclosed. A portable device may include a motion detection unit including an accelerometer for detecting accelerations in one or more axes. Signals associated with the detected motion are processed to generate estimates of device acceleration, velocity, and relative and absolute locations. Additional processing may be performed to detect user gestures or other user input relevant to portable device control. Particular motion or vibrational characteristics may be also be detected and used by other processes in the portable device.

Abstract: A device with a touchscreen with a light modulator is disclosed herein. The device transitions from a netbook mode to a touchscreen mode. The device comprises a main unit and a touchscreen unit with a transparent display. The touchscreen unit is preferably separated from the main unit when in a netbook mode, and the touchscreen unit communicates wirelessly with the main unit. The touchscreen unit preferably has an outer screen display surface and an inner screen display surface on each side of a light modulating unit. The main unit preferably has a main unit display.

Abstract: Systems and methods for location, motion, and contact detection and tracking in a portable networked device are disclosed. A portable device may include a motion detection unit including an accelerometer for detecting accelerations in one or more axes. Signals associated with the detected motion are processed to generate estimates of device acceleration, velocity, and relative and absolute locations. Additional processing may be performed to detect user gestures or other user input relevant to portable device control. Particular motion or vibrational characteristics may be also be detected and used by other processes in the portable device.