US 12,260,030 B1
Stylus and touch device for encoding and transmitting signal having multiple frequencies
Tsung-Yu Wang, Hsinchu County (TW); Yun-Hsiang Yeh, Hsinchu (TW); and Yuan-Fu Hsueh, Hsinchu (TW)
Assigned to Novatek Microelectronics Corp., Hsinchu (TW)
Filed by Novatek Microelectronics Corp., Hsinchu (TW)
Filed on Dec. 27, 2023, as Appl. No. 18/396,751.
Int. Cl. G06F 3/03 (2006.01); G06F 3/0354 (2013.01); G06F 3/044 (2006.01)
CPC G06F 3/03545 (2013.01) [G06F 3/0442 (2019.05)] 12 Claims
OG exemplary drawing
 
1. A stylus, comprising:
a tip portion; and
a transmission electrode, disposed on the tip portion, wherein the transmission electrode transmits at least one downlink signal to a touch device, wherein the at least one downlink signal comprises a plurality of different frequencies,
wherein the at least one downlink signal comprises a first downlink signal and a second downlink signal, the first downlink signal has a first frequency and a second frequency, the second downlink signal has a third frequency and a fourth frequency, and the first frequency, the second frequency, the third frequency, and the fourth frequency are different and transmitted in time sequence.