US 11,747,922 B2
Input device driving method and interface device using the same
Jina Kang, Hwaseong-si (KR); Soongyu Lee, Seoul (KR); Byeongkyu Jeon, Busan (KR); Kyowon Ku, Seoul (KR); Jinwoo Kim, Hwaseong-si (KR); and Dongchun Lee, Seoul (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Sep. 15, 2021, as Appl. No. 17/447,774.
Claims priority of application No. 10-2020-0137687 (KR), filed on Oct. 22, 2020.
Prior Publication US 2022/0129089 A1, Apr. 28, 2022
Int. Cl. G06F 3/038 (2013.01); G06F 3/0354 (2013.01); G06F 3/044 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/0383 (2013.01) [G06F 3/03545 (2013.01); G06F 3/03547 (2013.01); G06F 3/0416 (2013.01); G06F 3/0442 (2019.05); G06F 3/04162 (2019.05); G06F 3/0412 (2013.01); G06F 3/0446 (2019.05); G06F 2203/0384 (2013.01); G06F 2203/04106 (2013.01); G09G 2330/06 (2013.01); G09G 2354/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An interface device comprising:
an electronic device; and
an input device configured to communicate with the electronic device,
wherein the electronic device includes:
a display layer;
a sensor layer on the display layer and configured to detect a first input by the input device; and
a controller configured to output a first uplink and a second uplink signal having a phase different from a phase of the first uplink signal to the sensor layer, and
wherein the input device includes:
a communication unit configured to receive an uplink signal from the sensor layer;
a memory configured to store first information of the first uplink signal and second information of the second uplink signal;
a signal determination unit configured to determine whether the uplink signal is the first uplink signal or the second uplink signal, based on the first information and the second information; and
a signal conversion unit configured to output conversion data by converting the second uplink signal in response to the uplink signal being the second uplink signal, wherein the conversion data has a same frequency and a same phase as the first uplink signal, and the conversion data has an opposite phase to the phase of the second uplink signal.