US 11,874,706 B2
Pen analog front end and pen communication method using the same
Chul Kim, Hwaseong-si (KR); and Yun-Ho Kim, Hwaseong-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Nov. 29, 2022, as Appl. No. 18/070,976.
Claims priority of application No. 10-2022-0026341 (KR), filed on Feb. 28, 2022.
Prior Publication US 2023/0297140 A1, Sep. 21, 2023
Int. Cl. G06F 3/033 (2013.01); G06F 1/16 (2006.01); G06F 3/0354 (2013.01)
CPC G06F 1/1652 (2013.01) [G06F 3/03545 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pen analog front end comprising:
an analog signal processing unit connected with an input sensor, the analog signal processing unit processing an analog input signal that the input sensor receives from an input device;
an analog-to-digital converter converting the analog input signal into a first digital input signal; and
a digital signal processing unit synchronizing the first digital input signal and reference sync data preset to the input sensor and processing a position signal and a data signal of the input device.