US 9,811,168 B2
Apparatus for performing gesture recognition and control based on ultrasonic positioning
Xiaoyu Zhang, Shenzhen (CN)
Assigned to AAC TECHNOLOGIES PTE. LTD., Singapore (SG)
Filed by Xiaoyu Zhang, Shenzhen (CN)
Filed on Jan. 24, 2016, as Appl. No. 15/4,975.
Claims priority of application No. 2015 1 0315444 (CN), filed on Jun. 10, 2015.
Prior Publication US 2016/0364006 A1, Dec. 15, 2016
Int. Cl. G06F 3/01 (2006.01); G06F 3/043 (2006.01)
CPC G06F 3/017 (2013.01) [G06F 3/043 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An apparatus for performing gesture recognition and control based on ultrasonic positioning, comprising:
an ultrasonic transmitter module for providing an original ultrasonic signal;
an ultrasonic receiver for receiving an reflected ultrasonic signal corresponding to the original ultrasonic signal;
a computing module for computing a frequency shift within a time period from the original ultrasonic signal being transmitted to the reflected ultrasonic signal being received, and converting the frequency shift into a gesture characteristic signal;
a gesture database for providing reference gesture characteristic signals, and control signals corresponding to the reference gesture characteristic signals respectively; and
a gesture recognition and control module for comparing the gesture characteristic signal with the reference gesture characteristic signals in the gesture database, and selecting a corresponding control signal from the data base according to a comparison result;
a division module for dividing the original ultrasonic signal transmitted by the ultrasonic transmitter module into several ultrasonic frames based on a time division manner.