US 11,809,658 B2
Driving circuit of display and operation method of a timing controller that determines a current operating status of a touch driver according to a number of sub-falling edges of an instruction signal
Hsiao-Lung Cheng, Hsinchu (TW); Shu-Cheng Liu, Hsinchu (TW); Pei-Lin Tien, Hsinchu (TW); I-Shin Lo, Hsinchu (TW); and Chi-Mao Hung, Hsinchu (TW)
Assigned to E Ink Holdings Inc., Hsinchu (TW)
Filed by E Ink Holdings Inc., Hsinchu (TW)
Filed on Jan. 21, 2022, as Appl. No. 17/581,828.
Claims priority of application No. 110108844 (TW), filed on Mar. 12, 2021.
Prior Publication US 2022/0291801 A1, Sep. 15, 2022
Int. Cl. G06F 3/041 (2006.01); G09G 3/20 (2006.01)
CPC G06F 3/04166 (2019.05) [G06F 3/04184 (2019.05); G09G 3/2092 (2013.01); G09G 2310/08 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An operation method of a timing controller, comprising:
receiving an instruction signal via a general purpose input/output pin of a touch driver;
starting a detection period according to a main falling edge switched from a first voltage level to a second voltage level of the instruction signal;
detecting a number of sub-falling edges of pulse signals of the instruction signal; and
determining a current operating status of the touch driver according to the number of sub-falling edges of the instruction signal during the detection period,
wherein the timing controller determines that the current operating status of the touch driver is a first writing status according to the number of sub-falling edges of the instruction signal during the detection period being 0.