Abstract: Embodiments of the invention relate to spectrally and spatially dissecting accelerometer data from a signal of a motion sensor. Data received from the dissected signal is reduced to statistical averages for selected frequency bands and spatial dimensions. A time segment subject over which the signal was acquired is segmented so that the dissected signal may be evaluated per the segmentation of the time. Change of orientation towards gravity of the sensor is analyzed with respect to a change of orientation from a before impact segment to an after impact segment. The analyzed change in orientation value with respect to a threshold is a factor in determination of a fall of a body to which the sensor is attached.

Abstract: A method, system, and article to support a motion based input system. Movement data is acquired from a motion sensor. An orientation detector detects orientation towards gravity from a rest position, and a motion detector detects motion, including movement and rest. In addition, an inference state machine in communication with the orientation and motion detectors maintains a sequence of the detected motion conditions, and produces a profile description for the sequence of the detected motion conditions. An output event corresponding to the profile description is generated based upon the profile.

Abstract: Embodiments of the invention relate to a distributed signal processing system and a method for processing a sensor signal for a mobile device. Raw signal data is received and pre-processed by a processor to filter and split the data signal into multiple data outputs. The split signal data represent both spatial and spectral components, and/or statistical properties pertaining to the sensor. Low rate processing data is communicated to a second processor for limited data processing by select logic components.

Abstract: Embodiments of the invention relate to spectrally and spatially dissecting high frequency noise from a signal of a motion sensor. Data received from the dissected signal is reduced to statistical averages for selected frequency bands and spatial dimensions. A logic engine translates the statistical average to real-world application.

Abstract: An apparatus having an arrangement of two or more identical accelerometers with aligned sensitivity axes. Each of the accelerometers senses motion over at least one axis. The accelerometer readings include a component corresponding to gravitational force that is the same for each accelerometer in the arrangement. Logic circuitry in communication with the accelerometer arrangement couples accelerometer signals to a processor to compute motion variables.

Abstract: A method, apparatus, and article of manufacture are provided to support communication from two or more input devices to an image on a visual display of a handheld computing apparatus. At least two input devices are provided, together with a mapping of positions of the input devices. Each mapping of the combined input devices is configured to manipulate an image on the visual display.

Abstract: A method, system, and article to support a motion based input system. Movement data is acquired from a motion sensor. An orientation detector detects orientation towards gravity from a rest position, and a motion detector detects motion, including movement and rest. In addition, an inference state machine in communication with the orientation and motion detectors maintains a sequence of the detected motion conditions, and produces a profile description for the sequence of the detected motion conditions. An output event corresponding to the profile description is generated based upon the profile.

Abstract: A reduced size and split keyboard arrangement is provided for a portable computing apparatus. The arrangement of the keys, together with mapping of multiple characters to the keys allows reduction of the keyboard to a smaller footprint of a handheld device. Keys may have a single character or multiple characters mapped thereto. For the keys with multiple character mapping, the selection of the character may be by done by simultaneous or near-simultaneous pressing of adjacent physical keys. In one embodiment, disambiguation software may be employed to determine selection of a character from a physical or virtual key with multiple characters assigned thereto.

Abstract: An apparatus having an arrangement of two or more identical accelerometers with aligned sensitivity axes. Each of the accelerometers senses motion over at least one axis. The accelerometer readings include a component corresponding to gravitational force that is the same for each accelerometer in the arrangement. Logic circuitry in communication with the accelerometer arrangement couples accelerometer signals to a processor to compute motion variables.