US 12,292,497 B2
Gesture recognition method and apparatus, mobile terminal, and computer readable storage medium
Wendou Fang, Beijing (CN)
Assigned to Beijing Xiaomi Mobile Software Co., Ltd., Beijing (CN)
Filed by Beijing Xiaomi Mobile Software Co., Ltd., Beijing (CN)
Filed on Jan. 27, 2022, as Appl. No. 17/585,908.
Claims priority of application No. 202110592996.X (CN), filed on May 28, 2021.
Prior Publication US 2022/0381897 A1, Dec. 1, 2022
Int. Cl. G01S 13/56 (2006.01); G01S 13/02 (2006.01); G06F 3/01 (2006.01); H01Q 3/24 (2006.01); H04B 7/04 (2017.01)
CPC G01S 13/56 (2013.01) [G01S 13/0209 (2013.01); G06F 3/011 (2013.01); H01Q 3/24 (2013.01); H04B 7/04 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A mobile terminal, comprising
an ultra wide band (UWB) chip,
an antenna module that includes a plurality of antennas, wherein the plurality of antennas comprise a first antenna, a second antenna, a third antenna, a fourth antenna and a fifth antenna; the first antenna, the second antenna and the fourth antenna are arranged in a first direction in sequence; the second antenna, the fifth antenna and the third antenna are arranged in a second direction in sequence; the first direction is perpendicular to the second direction; and a distance between the first antenna and the second antenna is a wavelength, a distance between the second antenna and the fourth antenna is half of the wavelength, a distance between the second antenna and the fifth antenna is half of the wavelength, a distance between the third antenna and the fifth antenna is half of the wavelength, and a distance between the second antenna and the third antenna is a wavelength,
a plurality of switches, wherein the plurality of switches are configured to control the antenna module to be switched to a target antenna, the target antenna comprises a time division multiplexing antenna, wherein the time division multiplexing antenna serves as a first target antenna at a moment in a signal cycle to radiate a UWB pulse signals into a space and serves as a second target antenna at another moment in the signal cycle to receive echo signals, and the echo signals refer to signals returned after the UWB pulse signals meet a target object in the space, and
a processor, wherein the processor is configured to recognize a gesture of the target object based on a frame of detection data,
wherein the UWB chip is connected with the plurality of switches and the processor respectively, the plurality of switches are connected with the antenna module; and
wherein the UWB chip is configured to:
output a first preset number of UWB pulse signals in the signal cycle;
and
generate the frame of the detection data based on the echo signals in a second preset number of signal cycles.