Gestendetektor im Ultraschallbereich

Details

Veröffentlichungs-Nr.

EP3133474

Aktenzeichen

EP15181574

Anmeldetag

19. August 2015

Veröffentlichung

27. März 2019

Erteilung

27. März 2019

Rechtsraum

EP

IPC

G01S7/527G01S7/539G01S15/88G06F3/16G06F3/043G06F3/01G06F3/046G01S15/58G06F1/32G06K9/00G06F3/0346

Abstract

A user input detector for a mobile device is described having an ultrasound demodulator having an input for receiving an ultrasound signal reflected from a user and an output for outputting a demodulated ultrasound signal; a gesture processor comprising: a time-frequency processing module configured to generate a time-varying ultrasound-image spectrum from the demodulated ultrasound signal; an image-feature extraction module configured to extract micro-doppler features from the time-varying ultrasound image spectrum; a feature selection module configured to select and compress the extracted micro-doppler features; and a gesture detection module configured to compare the selected micro-doppler features with a known feature set and to output a detected gesture based on the comparison. The user input detector may be incorporated into a mobile phone for example to provide an always on low power control mechanism for the mobile phone by recognizing user gestures and executing control commands in response to those user gestures.

Anmelder

Firma

NXP B.V.

Land

🇳🇱 Niederlande

Fachgebiete