Google Inc.

Google Technology Holdings LLC

Shakil Barkat

Amitkumar N Balar

Sajid Dalvi

Julius S Gyorfi

Hideki Yoshino

Tushar Janefalkar

Sajid I Dalvi

A portable electronic device includes a motion sensor and a controller. The motion sensor detects an alternating signature motion of a limb of the user about a virtual axis corresponding to the limb. The motion sensor may be an accelerometer capable of detecting three dimensional acceleration. The accelerometer detects acceleration along X, Y and/or Z axes, in which acceleration peaks of the X and Z axes alternate with each other and acceleration of the Y axis remains substantially steady relative to the X and Y axes. The portable electronic device controls at least one function based on the detected alternating signature motion of the limb and/or acceleration along the X, Y and/or Z axes.

Portable electronic device and method for controlling operation thereof based on user motion

Implementations relate to systems and methods for generating compensated speed values for a Doppler-enabled device. A portable wireless device can contain a GPS navigation engine () to capture position data () and Doppler speed data () from positioning satellites. The device can also generate position-based speed values from successive position readings and time intervals, to determine the current speed independently of the Doppler-based speed values. During degraded signal conditions, the Doppler-based speed values can drop to invalid levels. The device incorporates a combiner module () which compares the position-based and Doppler-based speed values and performs combination operations on those quantities to produce a compensated speed value (). By selecting the maximum or otherwise combining those values, extreme excursions in speed values are avoided and accuracy promoted.

Systems and methods for generating compensated speed values for doppler-enabled device

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San Jose, CA, United States of America

Shakil Barkat