US 12,340,048 B2
Touch controller architecture
Shahrooz Shahparnia, Monte Sereno, CA (US); and Marduke Yousefpor, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Jun. 15, 2023, as Appl. No. 18/335,934.
Application 18/335,934 is a continuation of application No. 16/953,303, filed on Nov. 19, 2020, granted, now 11,687,192.
Application 16/953,303 is a continuation of application No. 14/333,457, filed on Jul. 16, 2014, granted, now 10,845,901, issued on Nov. 24, 2020.
Claims priority of provisional application 61/860,816, filed on Jul. 31, 2013.
Prior Publication US 2023/0325030 A1, Oct. 12, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/041 (2006.01); G06F 3/0354 (2013.01); G06F 3/044 (2006.01); G09G 3/36 (2006.01)
CPC G06F 3/041661 (2019.05) [G06F 3/03545 (2013.01); G06F 3/041 (2013.01); G06F 3/0416 (2013.01); G06F 3/04162 (2019.05); G06F 3/044 (2013.01); G06F 3/0441 (2019.05); G06F 3/0442 (2019.05); G06F 3/0443 (2019.05); G09G 3/3648 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A touch controller comprising:
drive circuitry configurable to generate stimulation signals to drive a touch sensor panel; and
sense circuitry configurable to sense the touch sensor panel;
wherein:
the drive circuitry and the sense circuitry are configured according to a scan plan defining a sequence of scan events including a first scan event and a second scan event to be performed at least partially concurrently at the touch sensor panel;
for the first scan event, the drive circuitry is configured to generate first stimulation signals at one or more first stimulation frequencies to drive the touch sensor panel and the sense circuitry is configured to sense the touch sensor panel to sense an object touching or in proximity to the touch sensor panel using the first stimulation signals; and
for the second scan event, the sense circuitry is further configured to sense the touch sensor panel for stylus spectral analysis.