US 11,841,996 B2
Display apparatus including an input device and a plurality of antenna modules, display system, and control method thereof
Hui Jun Shim, Suwon-si (KR); Gwan-Hyung Kim, Suwon-si (KR); Gyeong Gu Kim, Suwon-si (KR); and Sang Ho Kim, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Appl. No. 16/962,667
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
PCT Filed Jan. 16, 2019, PCT No. PCT/KR2019/000638
§ 371(c)(1), (2) Date Jul. 16, 2020,
PCT Pub. No. WO2019/143122, PCT Pub. Date Jul. 25, 2019.
Claims priority of application No. 10-2018-0005436 (KR), filed on Jan. 16, 2018.
Prior Publication US 2020/0371606 A1, Nov. 26, 2020
Int. Cl. G06F 3/0346 (2013.01); G01S 13/48 (2006.01); G01S 13/46 (2006.01)
CPC G06F 3/0346 (2013.01) [G01S 13/48 (2013.01); G01S 2013/468 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of controlling a display system, the method comprising:
transmitting, by an input device, an initial position signal in response to the input device being an on-state according to a user input, wherein the initial position signal is a radar signal having a predetermined magnitude;
receiving, by a plurality of antenna modules, the initial position signal from the input device, and transmitting a position detection signal and receiving a reflection signal of the position detection signal that is reflected from the input device and a surrounding object;
determining distances from the input device to each of the plurality of antenna modules based on a ratio of the predetermined magnitude of the initial position signal and a magnitude of the initial position signal received by each of the plurality of antenna modules;
determining an initial position of the input device based on the determined distances;
determining a current position of the input device by calculating distances to the input device from positions of the plurality of antenna modules based on the reflection signal reflected within a predetermined range of the initial position; and
displaying a pointer on a display based on the current position of the input device,
wherein the input device comprises a timer circuit to switch the input device to an off-mode to stop transmitting the initial position signal when a predetermined time has passed after the input device is switched to the on-state according to the user input.