Hand-worn device for surface gesture input

摘要

Embodiments that relate to energy efficient gesture input on a surface are disclosed. One disclosed embodiment provides a hand-worn device that may include a microphone configured to capture an audio input and generate an audio signal, an accelerometer configured to capture a motion input and generate an accelerometer signal, and a controller comprising a processor and memory. The controller may be configured to detect a wake-up motion input based on the accelerometer signal. The controller may wake from a low-power sleep mode in which the accelerometer is turned on and the microphone is turned off and enter a user interaction interpretation mode in which the microphone is turned on. Then, the controller may contemporaneously receive the audio signal and the accelerometer signal and decode strokes. Finally, the controller may detect a period of inactivity based on the audio signal and return to the low-power sleep mode.

主权项

1. A hand-worn device for gesture input on surfaces, comprising:
a microphone configured to capture an audio input and generate an audio signal; an accelerometer configured to capture a motion input and generate an accelerometer signal; a radio configured to send data to a computing device; and a controller comprising a processor and memory; wherein the controller is configured to:
receive the audio signal and the accelerometer signal;decode strokes based on the audio signal and the accelerometer signal; and send a gesture packet to a computing device via a radio, the gesture packet comprising the decoded strokes and inter-stroke information for the computing device to interpret multi-stroke gestures.