US 11,704,394 B2
Apparatus and method for authenticating object in electronic device
Hyunkee Min, Gyeonggi-do (KR); Bokun Choi, Gyeonggi-do (KR); Jongmu Choi, Gyeonggi-do (KR); and Sunkee Lee, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on Jul. 8, 2019, as Appl. No. 16/504,410.
Claims priority of application No. 10-2018-0080513 (KR), filed on Jul. 11, 2018.
Prior Publication US 2020/0019686 A1, Jan. 16, 2020
Int. Cl. G01S 13/86 (2006.01); G06F 21/32 (2013.01); H04W 12/06 (2021.01); G01S 7/41 (2006.01); H01Q 21/00 (2006.01)
CPC G06F 21/32 (2013.01) [G01S 7/41 (2013.01); G01S 13/867 (2013.01); H04W 12/06 (2013.01); H01Q 21/00 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An electronic device comprising:
an antenna array including a plurality of antennas;
a wireless communication module electrically connected to the antenna array and configured to form directional beams through the antenna array;
at least one processor operatively coupled to the wireless communication module; and
a memory operatively coupled to the at least one processor,
wherein the memory stores instructions that, when executed, cause the at least one processor to:
identify a type of an object based on information received from a user interface or a camera;
control a first beam width based on a predicted distance of the identified type of the object;
transmit a sequence of first directional beams having the first beam width to scan first regions having a first size through the antenna array, the first beam width being determined based on activating a first number of antenna among the plurality of antennas included in the antenna array,
receive a sequence of first reflected waves generated by reflection of the sequence of the first directional beams from the object through the antenna array within a predetermined time threshold, wherein the first reflected waves are reflected from some of the first regions, wherein the some of the first regions are divided into second regions;
transmit a sequence of second directional beams having a second beam width narrower than the first beam width to selectively scan second regions of the some of the first regions that reflected the sequence of first reflected waves, and having a second size smaller than the first size, through the antenna array based on at least a portion of the received sequence of the first reflected waves, the second beam width being determined based on activating a second number of antenna among the plurality of antennas included in the antenna array,
receive a sequence of second reflected waves generated by reflection of the sequence of the second directional beams from the object through the antenna array, and
authenticate the object based on at least a portion of the sequence of the second reflected waves.